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WEET How and What About TVS (Transient Voltage Suppressors) Diodes Knowledge

    WEE Technology Company Limited 

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers    


    TVS (Transient Voltage Suppressors) diodes, that is, transient voltage suppressors, also known as avalanche breakdown diodes, are single PN junction or multiple PN junction integrated devices made by semiconductor processes. There are unidirectional and bidirectional TVS diodes. Unidirectional TVS diodes are generally used in DC power supply circuits, and bidirectional TVS diodes are used in voltage alternating circuits. When applied to a DC circuit, a unidirectional TVS diode is connected in reverse in parallel to the circuit. When the circuit works normally, the TVS diode is in the off state (high-impedance state), which does not affect the normal operation of the circuit. When the circuit has an abnormal overvoltage and reaches the TVS diode breakdown voltage, the TVS diode quickly changes from a high-resistance state to a low-resistance state, releasing the transient overcurrent caused by the abnormal overvoltage to the ground, and clamping the abnormal overvoltage to Low level, thus protecting the post-stage circuit from abnormal overvoltage. When the abnormal overvoltage disappears, the resistance of the TVS diode returns to a high-impedance state.


    First, TVS diode products supplied by WEET can be classified from the package types:

    • SMA/DO-214AC:P4SMA6.8CA THRU P4SMA250CA, SMAJ5.0CA THRU SMAJ440CA

    • SMB/DO-214AA:P6SMB6.8CA THRU P6SMB250CA, SMBJ5.0CA THRU SMBJ440CA

    • SMC/DO-214AB:SMDJ5.0CA THRU SMDJ170CA, SMCJ5.0CA THRU SMCJ440CA

    • SOD-123FL:SMF5.0CA THRU SMF220CA

    • DO-41:P4KE6.8CA THRU P4KE440CA

    • DO-15:P6KE6.8CA THRU P6KE600CA

    • DO-27:1.5KE6.8CA THRU 1.5KE440CA


    Second Part: What do TVS diode characteristics stand for ?

    • Made of semiconductor technology, with high reliability and no damage limit;

    • Glass passivation process, accurate on-voltage;

    • Large transient power, low capacitance, low leakage current, easy to control clamping voltage;

    • Fast response time: usually less than 1.0PS;

    • Excellent clamping ability and small breakdown voltage deviation;

    • High voltage accuracy, in special applications, higher accuracy can be achieved through process or parameter screening;

    • Small size and easy installation;

    • unidirectional and bidirectional units;

    • Transient power can reach 200W-30000W or even higher under 10 / 1000μs waveform;

    • Working voltage range 3.3V ~ 600V, or even higher;

    • Diversified package formats

    SMD package: SOD-123, SMA / DO-214AC, SMB / DO-214AA, SMC / DO-214AB, DO-218AB, etc.

    In-line package: DO-41, DO-15, DO-201,  etc .;

    • Halogen-free and RoHS compliant;


    Third Part: How to understand TVS diode selection guide?

    1) To determine the maximum DC or continuous operating voltage in the protected circuit, the rated standard voltage of the circuit and the "high-end" tolerance;

    2) The rated transient power of the TVS tube is greater than the maximum transient surge power that may occur in the circuit;

    3) The cut-off voltage of the TVS tube must be greater than the highest working voltage of the circuit being protected;

    4) The maximum clamping voltage of the TVS tube should be less than the damage voltage in the protected circuit of the subsequent stage;

    5) After determining the maximum clamping voltage of the TVS tube, its peak pulse current should be greater than the transient surge current;

    6) For the circuit protection of the data interface, you should also pay attention to the selection of TVS diodes with appropriate capacitance. For example: when the signal frequency or transmission rate is high, a TVS tube with a low capacitance series should be selected;


    Fourth Part:  WEET shares the detailed explanation of TVS diode parameters

    • VRWM: cut-off voltage, the highest working voltage of TVS diode, the maximum DC voltage or AC peak voltage that can be continuously applied without causing degradation or damage of TVS diode Under VRWM, TVS diodes are not working and are not conducting.

    • VC: Clamping voltage. The peak voltage measured across the TVS diode when the peak pulse current IPP of the specified waveform is applied.

    • VBR: Breakdown voltage, which is the minimum avalanche voltage of a TVS tube. It refers to the voltage across the TVS measured on the V-I characteristic curve under the specified pulsed DC current IT or the current near the occurrence of avalanche.

    • IR: Leakage current, also known as standby current. The maximum current flowing through a TVS diode at a specified temperature and maximum operating voltage is measured at the cutoff voltage.

    • IPP: peak pulse current, generally the peak value under 10 / 100μs current waveform.

    • IT: Test current.

    • C: Capacitance value. For TVS tubes of the same power level, the lower the voltage, the larger the capacitance value. In the protection of communication lines, pay special attention to the capacitance value of the TVS tube.

    • Package form: From the package form of the TVS tube, its power can be seen. The chip area of a TVS tube directly determines its power level.


    Fifth Part:  How to choose TVS and TVS diode selection precautions

    1) The specification manual only gives the absorbed power peak at a specific pulse width, and the pulse width in the actual circuit is variable. There must be a number in the heart, and the wide pulse should be derated.

    2) For the protection of small current load circuits, it is necessary to intentionally increase the current limiting resistance;

    3) Pay attention to whether the steady-state average power of the TVS diode is within the safe range;

    4) Consider temperature changes. Normally, transient suppression diodes work between -55 ° C and 150 ° C. Derating should be applied when the temperature in the circuit is relatively high.

    5) The lead length of TVS transient suppression diode should be opposite to the line to be protected.

    6) For the protection in the data interface or communication line, TVS diodes with relatively small capacitance values should be selected as much as possible.

    7) Most of the DC protection circuits are unidirectional TVS tubes, the AC protection circuits are mostly bidirectional TVS tubes, the multi-channel protection circuits are TVS array devices, and the high-power protection circuits are special protection modules.

    8) In the process of using TVS tube, considering the dispersion of TVS, try to reduce the number of serial / parallel.


    Sixth Part:  What is TVS diode typical application 

    TVS diodes have the advantages of extremely fast response speed, low clamping voltage, precise voltage, etc., so they are used in the field where the protection device is required to be relatively high. Automotive electronics, home, industrial control, lighting, communication, medical and other industries, such as DC power line, RS485 interface, communication power, I / O port, etc.


Publish: 2019/12/19 Category: Transient Voltage Suppressors Read: Times Comment: 0Times

WEET SMB 600W SMBJ Series Chinese TVS Factory Compete With Overseas Brands

Publish: 2019/12/12 Category: Transient Voltage Suppressors Read: Times Comment: 0Times

WEET SMC 3000W SMDJ Series SMDJ5.0CA THRU SMDJ170CA Transient Voltage Suppressor TVS

    WEE Technology Company Limited

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    WEET SMC 3000W SMDJ Series SMDJ5.0CA THRU SMDJ170CA Transient Voltage Suppressor TVS.

    As one of the famous TVS Diodes Manufacturer in China, we are proud to indtroduce our SMDJ sereis to you.


    SMDJ5.0A    SMDJ5.0CA SMDJ18A SMDJ18CA SMDJ60A SMDJ60CA 
    SMDJ6.0A SMDJ6.0CA SMDJ20A SMDJ20CA SMDJ64A SMDJ64CA 
    SMDJ6.5A SMDJ6.5CA SMDJ22A SMDJ22CA SMDJ70A SMDJ70CA 
    SMDJ7.0A SMDJ7.0CA SMDJ24A SMDJ24CA SMDJ75A SMDJ75CA
    SMDJ7.5A SMDJ7.5CA SMDJ26A SMDJ26CA SMDJ78A SMDJ78CA 
    SMDJ8.0A SMDJ8.0CASMDJ28A SMDJ28CASMDJ85A SMDJ85CA
    SMDJ8.5A SMDJ8.5CA SMDJ30A SMDJ30CA SMDJ90A SMDJ90CA 
    SMDJ9.0A SMDJ9.0CA SMDJ33A SMDJ33CASMDJ100A SMDJ100CA 
    SMDJ10A SMDJ10CA SMDJ36A SMDJ36CA SMDJ110A SMDJ110CA
    SMDJ11A SMDJ11CA SMDJ40A SMDJ40CA SMDJ120A SMDJ120CA 
    SMDJ12A SMDJ12CA SMDJ43A SMDJ43CA SMDJ130A SMDJ130CA
    SMDJ13A SMDJ13CA SMDJ45A SMDJ45CA SMDJ150A SMDJ150CA 
    SMDJ14A SMDJ14CA SMDJ48A SMDJ48CASMDJ160A SMDJ160CA 
    SMDJ15A SMDJ15CA SMDJ51A SMDJ51CA SMDJ170A SMDJ170CA
    SMDJ16A SMDJ16CA SMDJ54A SMDJ54CA 
    SMDJ17A SMDJ17CASMDJ58A SMDJ58CA


    https://www.weetcl.com/Transient_Voltage_Suppressors_TVS/SMC_SMDJ_Series.html

    https://www.weetcl.com/pdf/WEET_SMC_SMDJ5.0CA_SMDJ170CA-Series.pdf



Publish: 2019/12/5 Category: Transient Voltage Suppressors Read: Times Comment: 0Times

WEET SMC 1500W SMCJ Series TVS Factory in China More Than 20 Years

    WEE Technology Company Limited

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    WEET SMC 1500W SMCJ Series SMCJ5.0CA THRU SMCJ440CA Transient Voltage Suppressor TVS factory in China for more than 20 years.  


    WEET Chinease Made SMCJ series is designed expecially to protect sensitive electronic equipment from high voltage transients induced by lightning and other transient voltage events during the usage.

    TVS devices are ideal for the protection of I/O Interfaces, VCC bus and other vulnerable circuits used in Telecom, Computer, Industrial and Consumer electronic applications.

    Transient Voltage Suppression Diodes Surface Mount – 1500W SMCJ series has Uni-directional and Bi-directional two types for choose.


    https://www.weetcl.com/pdf/WEET_SMC_SMCJ_Series.pdf

    https://www.weetcl.com/Transient_Voltage_Suppressors_TVS/SMC_SMCJ_Series.html



Publish: 2019/11/28 Category: Transient Voltage Suppressors Read: Times Comment: 0Times

WEET N Channel Power MOSFET 2A to 20A 600V TO-251, TO-252, TO-220, TO-220F

    WEE Technology Company Limited

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    WEET N Channel Power MOSFET 2A to 20A 600V to 800V, common package TO-251, TO-252, TO-220, TO-220F, strong list as below.

    Welcome your enquiry. Free samples are ready for you.



    No.Product TypeWEET PNPackageMPQ/Pcs
    1N-Channel Power    MOSFETWEET2N60  TO-251, TO-2522500
    2N-Channel Power    MOSFETWEET2N60  TO-220, TO-220F1000
    3N-Channel Power    MOSFETWEET2N65 TO-251, TO-2522500
    4N-Channel Power    MOSFETWEET2N65 TO-220, TO-220F1000
    5N-Channel Power    MOSFETWEET2N80   TO-220F1000
    6N-Channel Power    MOSFETWEET4N60  TO-251, TO-2522500
    7N-Channel Power    MOSFETWEET4N60  TO-220, TO-220F1000
    8N-Channel Power    MOSFETWEET4N65  TO-2522500
    9N-Channel Power    MOSFETWEET4N65  TO-220, TO-220F1000
    10N-Channel Power    MOSFETWEET5N80   TO-220F1000
    11N-Channel Power    MOSFETWEET7N60  TO-251, TO-2522500
    12N-Channel Power    MOSFETWEET7N60  TO-220, TO-220F1000
    13N-Channel Power    MOSFETWEET7N65  TO-2522500
    14N-Channel Power    MOSFETWEET7N65  TO-220, TO-220F1000
    15N-Channel Power    MOSFETWEET8N80   TO-220F1000
    16N-Channel Power    MOSFETWEET10N60  TO-220F1000
    17N-Channel Power    MOSFETWEET10N65  TO-220F1000
    18N-Channel Power    MOSFETWEET10N80   TO-220F1000
    19N-Channel Power    MOSFETWEET12N60 TO-220F1000
    20N-Channel Power    MOSFETWEET12N65  TO-220, TO-220F1000
    21N-Channel Power    MOSFETWEET12N80   TO-220F1000
    22N-Channel Power    MOSFETWEET20N60  TO-2201000
    23N-Channel Power    MOSFETWEET20N60  TO-220F1000
    24N-Channel Power    MOSFETWEET20N65 TO-2201000
    25N-Channel Power    MOSFETWEET20N65  TO-220F1000


Publish: 2019/11/22 Category: About WEE Technology Read: Times Comment: 0Times

WEET Comprehensive Bridge Rectifier Packages DB,DBS, ABS, MB, MBS, MBF, MBM, WOB

    WEE Technology Company Limited

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    WEET Comprehensive Bridge Rectifier Packages DB,DBS, ABS, MB, MBS, MBF, MBM, WOB, which with 0.5A, 0.8A, 1A current.

    Voltage from 50V to 1000V. The best seller is MB6S, AB210S. All of our bridge rectifiers are with GPP chips. Try WEET, you earn.


    WEET Other Strong Bridge Rectifiers

    2W005-2W10KBU10005-KBU1010KBJ4005-KBJ410BR50005-BR5010
    MB1M-MB10MKBU15005-KBU1510KBJ8005-KBJ810BR15005W-BR1510W
    KBP3005-KBP310KBU25005-KBU2506KBJ10005-KBJ1010BR35005W-BR3510W
    GBP2005-GBP210KBU25008-KBU2510KBJ15005-KBJ1506BR50005W-BR5010W
    GBP3005-GBP310KBU35005-KBU3506KBJ1508-KBJ1510BR15005L-BR1510L
    KBL601-KBL610KBU3508-KBU3510KBPC1005-KBPC110BR25005L-BR2510L
    KBU4005-KBU410GBU20005-GBU2010BR15005-BR1510BR35005L-BR3510L
    KBU8005-KBU810GBU25005-GBU2510   BR35005-BR3510BR50005L-BR5010L
    DB201-DB207KBPC15005-KBPC1510GBJ50005-GBJ5010D2KB05 thru D2KB10
    DB201S-DB207SKBPC15005W-KBPC1510WMT3506-MT3516D3KB05 thru D3KB10
    GBL4005-GBL410KBPC3005-KBPC310   MT5006-MT5016D4KB05 thru D4KB10




Publish: 2019/11/15 Category: Bridge Rectifiers Read: Times Comment: 0Times

WEET Full Range of Axial Lead Diodes and Rectifiers DO-41, DO-15, DO-27, R-1, R-6

    WEE Technology Company Limited

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    WEET has rich expenceince in manufatctuirng axial lead didoes for more than 20 years. All the products are with self-developed GPP chip, which gives us priority in price level. We also have confindence about quality, as we introduced Taiwan and Jepanses automation machines.


    Please kindly refer to below hot and common products list, half- finished products in warehouse. 2 weeks lead time.

    WEET  Type NumberPackagePacking  MPQ Pcs
    1N5400,1N5401,1N5402,1N5404,1N5406,1N5407,1N5408DO-27Ammo/Bulk1.25K/0.25K
    P4KE Series 400W Transient Voltage Suppessor P4KE6.8CA-P4KE200CADO-41Ammo/Bulk4K/1K
    P6KE Series 600W  Transient Voltage Suppessor  P6KE6.8CA-P6KE200CADO-15Ammo/Bulk2K/0.5K
    1.5KE Series 1500W Transient Voltage Suppessor 1.5KE6.8CA-1.5KE200CADO-27Ammo/Bulk1K/0.25K
    1A1,1A2,1A3,1A4, 1A6, 1A8, 1A10R-1Ammo 5K
    6A05, 6A1, 6A2, 6A4, 6A6, 6A8, 6A10DO-27Ammo/Bulk1.25K/0.25K
    6A05, 6A1, 6A2, 6A4, 6A6, 6A8, 6A10R-6Ammo0.5K
    FR301,FR302,FR303,FR304,FR305,FR306,FR307DO-27Ammo/Bulk1.25K/0.25K
    HER301,HER302,HER303,HER304,HER305,HER306 HER307HER308DO-27Ammo/Bulk1.25K/0.25K
    UF5400,UF5401,UF5402,UF5403, UF5404,UF5406,UF5407,UF5408DO-27Ammo/Bulk1.25K/0.25K
    HER501,HER502,HER503,HER504,HER505,HER506,HER507,HER508DO-27Ammo/Bulk1.25K/0.25K
    SF51G,SF52G,SF53G,SF54G,SF55G,SF56G,SF58GDO-27Ammo/Bulk1.25K/0.25K
    UF4001,UF4002,UF4003,UF4004,UF4005,UF4006,UF4007DO-41Bulk1K
    SF11,SF12,SF13,SF14,SF15,SF16,SF18DO-41Ammo5K
    FR201,FR202,FR203,FR204,FR205,FR206, FR207DO-15Ammo3K
    HER201.HER202,HER203,HER204,HER205,HER206,HER207DO-15Bulk0.5K
    MUR140,MUR160DO-41Ammo5K



Publish: 2019/11/7 Category: About WEE Technology Read: Times Comment: 0Times

WEET Special Offer of Diodes and Rectifiers before Thanksgiving Day

    WEE Technology Company Limited

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    WEET is grateful for all of our cusotmers in the past decades supports and care. Right now, we are promotoin our strong diodes and rectifiers.

    Special price will be applied based on large volume before Thanksgiving Day. This is  a way WEET show our sincerity . Don't miss the chance.


    WEET TypePackagePacking  MPQ 
    US1A, US1B, US1D, US1G, US1J, US1K, US1MSMA-J T&R5K
    SS32A, SS33A, SS34A, SS35A, SS36ASMA-J T&R5K
    M1, M2, M3, M4, M5, M6, M7 SMAT&R5K
    M1F, M2F, M3F, M4F, M5F, M6F, M7F SMAFT&R10K
    GS2A, GS2B, GS2D, GS2G, GS2J, GS2K, GS2MSMB T&R3K
    US5A, US5B, US5D, US5G, US5J,     SMCT&R3K
    A1, A2, A3, A4, A5, A6, A7SOD123FLT&R3K
    1N4001, 1N4002, 1N4003, 1N4004, 1N4005, 1N4006, 1N4007DO-41Ammo5K
    P4KE Series 400W       <220VDO-41Ammo4K
    P6KE Series 600W       <220VDO-15Ammo2K
    1.5KE Series 1500W     <220VDO-27Ammo1K
    6A05, 6A1, 6A2, 6A4, 6A6, 6A8, 6A10R-6Ammo 0.5K
    1N4148DO-35Ammo 5K
    LL4148LL-34T&R2.5K



Publish: 2019/11/1 Category: About WEE Technology Read: Times Comment: 0Times

WEET List the Difference Between SMAF, SMA-J, SMA(DO-214AC), SMB(DO-214AA), SMC(DO-214AB), SOD-123FL

    WEE Technology Company Limited 

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    In most electronics circuits, when you choose a diode and consider about the package, bigger size is more stable than smaller size , as the chip size decides the performance of each electronic components. In other words, the bigger size package diodes can replace other smaller one. At the same time, you have to check your PCB design as well if you are going to change your products.Match is the most important thing.


    Secondly you need to calculate your project budget. There is no doubt that bigger size refers to higher cost. The most expensive package in SMD diodes is SMC package. On the contrast, SMA-J, SMAF, SOD-123FL are those thinner and  relatively economical packages.


    So how to choose a most suitable diodes for your products? No worry. Please contact with WEE Diodes, we are ready to provide our assistance and offer the best diodes and rectifiers to you at the competitive price and outstanding performance.


    Well, WEE Technology Company Limited is specialized in manufacturing diodes and bridge rectifiers. A-405, DO-15, DO-27, DO-35, DO-41, LL-34, LL-41, R-1, R-6, SMA, SMAF, SMAJ, SMB, SMC, SOD123, SOD-123FL, SOD-323, SOT-23, TO-220, TO-263, TO-277, MBS, MBF LBS, ABS, MBM, DB, DBS, WOM, MBM, KBP, GBP, KBL, KBU, GBU, KBJ4(3S), KBJ6(5S), BR6, KBPC6, KBPC8, KBPC/KBPC-W, BR/BR-W, BR-L, KBPC3(BR-3), GBPC, GBPCW, S35, S36, D4K


    https://www.weetcl.com/Package_Info/


Publish: 2019/10/26 Category: About WEE Technology Read: Times Comment: 0Times

WEET Switching Diode 1N4148 LL4148 1N4148W 1N4148WS 1N4148WT

    WEE Technology Company Limited 

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    WEE Technology Silicon epitaxial planar diode / fast switching diodes are AEC-Q101 qualified available


    1N4148 is a small high-speed switching diode. The switch is relatively fast. It is widely used in circuit with high signal frequency for one-way conduction isolation, communication, computer board, TV circuit and industrial control circuit.


    1N4148 is a very versatile high-frequency switching diode. Including DO35, LL34, SOD323, SOT23, 0805 packages.


    WEET 1N4148 fast switching diodes

    Pacakge:DO-34, DO-35 


    WEET LL4148 Diode type small signal

    Pacakge:MiniMELF SOD80


    WEET 1N4148W Silicon Epitaxial Planar Switching Diode 

    Pacakge:SOD-123


    WEET 1N4148WS Silicon Epitaxial Planar Switching Diode 

    Pacakge:SOD-323


    WEET 1N4148WT Silicon Epitaxial Planar Switching Diode 

    Pacakge:SOD-523

Publish: 2019/10/8 Category: Switching Diodes  Read: Times Comment: 0Times

WEET 1N4148 LL4148 Series SMD/SMT Diodes - General Purpose, Power, Switching Diodes are Available at

    WEE Technology Company Limited

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    1N indicates that the device has a 1 PN junction. Similarly, American type diodes all start at 2N because they have two PN junctions. 


    Usually this product starts with several PN series and is developed in the United States. 4148 is just something like a serial number, and its number has no practical significance. LL4148 is a SMD version of 1N4148, Don't know exactly what LL means.


    LL4148 usually refers to the glass-sealed cylinder LL-34 package (SMD Type, pinless).

    1N4148 usually refers to DO-35 glass seal, axial pin, plug-in. It can be taped or packed in bulk.


    1N4148 is a small high speed switching diode. The switch is relatively fast. It is widely used in circuit with high signal frequency for one-way conduction isolation, communication, computer board, TV circuit and industrial control circuit.

    All of them are fast switching diodes, but they are packaged differently in order to suit for various PCB soldering patterns.


    1N4148 is DO-35 plug-in through hole package, LL4148 is miniMELF chip SMD package, the two can be completely used alternately under low operating current.




Publish: 2019/10/4 Category: Switching Diodes  Read: Times Comment: 0Times

WEET Tells You What is The Difference Between LL-34 and LL-41 Package

    WEE Technology Company Limited 

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers    


    Zener Diodes BZV55C2V4 - BZV55C75V LL-34(Glass Case MiniMELF), Power Disspation 0.5W, forward voltage at 1F = 100mA 0.9V

    Silicon Epitaxial Planar Zener Diodes ZMM1-ZMM75 LL-34(Glass Case MiniMELF), Power Disspation 0.5W, forward voltage at 1F = 100mA 1.0V

    Silicon Planar Power Zener Diodes ZM4728-ZM4761,LL-41(Glass Case MELF), Power Disspation 1W, forward voltage at 1F = 200mA 1.2V


    What is the difference between LL-34 and LL-41 package, please see below size table for reference, please check WEET datasheet before ordering

    Dimention(mm)LL-34LL-41
    MinMaxMinMax
    A: Length3.33.54.85.2
    B: Diameter1.3971.4992.42.7
    C: Terminal0.350.50.40.6



Publish: 2019/9/30 Category: Zener Diodes Read: Times Comment: 0Times

WEET DO-41 Glass Package Silicon Epitaxial Planar Switching Diode 1N4727A - 1N4761A

    WEE Technology Company Limited 

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    1W 3V to 75V ±5% ( DO-204AL) DO-41 2-Pin Glass through-hole body style Package Silicon Epitaxial Planar Switching Diode 1N4727A - 1N4761A

    For use in stabilizing and clipping circuits with high power rating


    WEE Technology Part Number
    1N4727A1N4734A1N4741A1N4748A1N4755A
    1N4728A1N4735A1N4742A1N4749A1N4756A
    1N4729A1N4736A1N4743A1N4750A1N4757A
    1N4730A1N4737A1N4744A1N4751A1N4758A
    1N4731A1N4738A1N4745A1N4752A1N4759A
    1N4732A1N4739A1N4746A1N4753A1N4760A
    1N4733A1N4740A1N4747A1N4754A1N4761A


Publish: 2019/9/25 Category: Switching Diodes  Read: Times Comment: 0Times

WEET Zener Diodes Packing Information for MELF,MiniMELF,QuadroMELF, MicroMELF

    WEE Technology Company Limited 

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    MELF(LL-41 / DO-213AB),  5,000pcs/Reel , Reel Ø. 330 mm. 

    MiniMELF(LL-34 / DO-213AA),  2,500/Reel / 10,000/Reel ,  Reel Ø. 178 mm / 330 mm. 

    QuadroMELF(LS-34),  2,500/Reel / 10,000/Reel ,  Reel Ø. 178 mm / 330 mm. 

    MicroMELF(LS-31),  2,500/Reel / 10,000/Reel ,  Reel Ø. 178 mm / 330 mm. 


    BTZS4684LS-34 BZT52C10LL-34 ZM1.3C10LL-41 
    BTZS4689LS-34 BZT52C11LL-34 ZM1.3C11LL-41 
    BTZS4690LS-34 BZT52C12LL-34 ZM1.3C12LL-41 
    BTZS4691LS-34 BZT52C13LL-34 ZM1.3C13LL-41 
    BTZS4692LS-34 BZT52C15LL-34 ZM1.3C15LL-41 
    BTZS4693LS-34 BZT52C16LL-34 ZM1.3C16LL-41 
    BTZS4694LS-34 BZT52C18LL-34 ZM1.3C18LL-41 
    BTZS4696LS-34 BZT52C20LL-34 ZM1.3C20LL-41 
    BTZS4697LS-34 BZT52C22LL-34 ZM1.3C22LL-41 
    BTZS4698LS-34 BZT52C24LL-34 ZM1.3C24LL-41 
    BTZS4699LS-34 BZT52C27LL-34 ZM1.3C27LL-41 
    BTZS4700LS-34 BZT52C2V4LL-34 ZM1.3C2V7LL-41 
    BTZS4702LS-34 BZT52C2V7LL-34 ZM1.3C30LL-41 
    BTZS4703LS-34 BZT52C30LL-34 ZM1.3C33LL-41 
    BTZS4704LS-34 BZT52C33LL-34 ZM1.3C36LL-41 


        

Publish: 2019/9/10 Category: Zener Diodes Read: Times Comment: 0Times

WEET High Speed SMD Switching Diode SOD-123 SOD-323 SOD-523 1N4148W 1N4148WS 1N4148WT

    WEE Technology Company Limited 

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    WEET High Speed SMD Switching Diode 1N4148W, 1N4148WS, 1N4148WT


    These diodes are also available in other case style including the DO-35 case with type designation 1N4148, the Mini MELF case with the type designation LL4148 and the Micro MELF case with the type designation MCL4148.


    WEET strong small Diodes Pakcage: DO-35/LL-34/SOD-123/SOD-323/SOD-523/SOT-23


    Marking W2 / T4 for SMD Diode 1N4148WS, Marking W1 for SMD Diode 1N4148W, Marking .A for SMD Diode 1N4148WT

    For 1N4148W our database currently has 3224 SMD marking codes of bipolar transistors (BJT),


Publish: 2019/9/3 Category: Switching Diodes  Read: Times Comment: 0Times

WEET Shares The Difference Between Switching Diode 1N4148, LL4148 and Zener Diodes BZV55C Series

    WEE Technology Company Limited 

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    WEET 1N4148, LL4148 and Zener Diodes BZV55C Packing:

    1N4148 usually refers to DO-35 glass seal, axial pin, through hole type. It can be taped in ammo or packed in bulk.

    LL4148 and BZV55C are surface mount SMD type, only available in tape and reel packing. 7 inch and 13 inch paper or plastic tape for choose.


    WEET 1N4148, LL4148 and Zener Diodes BZV55C Package:

    LL4148 usually refers to the glass-sealed cylinder LL-34 package (patch, pinless). 

    LL4148 is a surface mount SMD type, as well las BZV55C. But BZV55C with blue ink indentification and LL4148 with black ink indentification


    WEET 1N4148, LL4148 and Zener Diodes BZV55C Marking:

    1N4148 usally will mark the part number on the glass surface, but LL4148 and Zener Diodes BZV55C does not.


    WEET 1N4148, LL4148 and Zener Diodes BZV55C Total power dissipation: Max.500mW

    BZV55C Two tolerance series: ± 2% and approx. ± 5% 

    Standard tolerance approx. ±5% (refer to "zener voltage range") ; ±2% tolerance available on request.


    https://www.weetcl.com/High_Speed_Switching_Diodes/DO35_1N4148.html

    https://www.weetcl.com/High_Speed_Switching_Diodes/LL34_LL4148.html

    https://www.weetcl.com/Silicon_Planar_Zener_Diodes/LL34_BZV55C2V4_THRU_BZV55C75.html


Publish: 2019/8/26 Category: Zener Diodes Read: Times Comment: 0Times

WEET Samll Signal Fast Switching Diode 500mW LL4148 MiniMELF SOD-80 LL-34 Glass Case

    WEE Technology Company Limited

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    WEET 500mW LL4148 Diode Description

    A diode is a device which allows current flow through only one direction. That is the current should always flow from the anode to the cathode. LL4148 is a Silicon Epitaxial planar diode with an identification of cathode band(which is easy to indentify by the blacking ring mark from the filler in the glass package), comes in glass package version. It has high conductance and high reliability. The specialty of this diode is its fast recovery time of 8ns to 4ns only at a forward current of 300mA, hence this diode is used in places where extremely fast switching is involved. The main use of this diode is for extreme fast switches. LL4148 is used in various projects like heat monitoring, detecting the state of LED to control another circuit and many other electronic circuits


    WEET Fast Switching Speed Diode LL4148 Features

    Glass package version for high reliability

    Available in both Through-hole and Surface mount versions

    Conductance is also high

    Silicon epitaxial planar diode

    RoHS and REACH compliant

    Electrical data identical with the devices 1N4148 and 1N4448 respectively

    MiniMELF SOD-80 LL-34 Glass Case 

    Anode,Current always Enters through Anode

    Cathode,Current always Exits through Cathode

    The black is the color ring, the main ingredients are  ink

    The red one is Dumex, a kind of alloy material.


    WEET Samll Signal Fast Switching Diode 500mW LL4148 Applications

    Extreme fast switches

    Can be used to prevent reverse polarity problem

    Protect Power electronic switches that are operating with high switching frequency.

    Used as a protection device

    Current flow regulators

Publish: 2019/8/20 Category: Zener Diodes Read: Times Comment: 0Times

WEET Bridge Rectifiers UL Qualified RoSH and Reach Compliant Cross Reference to YangJie and Diodes

    WEE Technology Company Limited
    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    WEE Technology is strong at all kinds of bridge rectifiers. Below are two of our strong types, welcome your enquiry. We are ready to cost down for you. WEE has specialized in producing bridge rectifiers for more than 20 years, usually we will use large chip than most of Chinese factories to make sure the top quality of the products. All of our bridge rectifiers are UL qualified, RoSH and Reach compliant.



    CurrentWEET Bridge Rectifiers Type NumberPackagePackingMPQ
    4AKBJ4005, KBJ401, KBJ402, KBJ404, KBJ406, KBJ408, KBJ410KBJ4(3S)Bulk0.3K
    6AKBJ6005, KBJ601, KBJ602, KBJ604, KBJ606, KBJ608, KBJ610KBJ4(3S)Bulk0.3K
    8AKBJ8005, KBJ801, KBJ802, KBJ804, KBJ806, KBJ808, KBJ810KBJ4(3S)Bulk0.3K
    10AKBJ10005, KBJ1001, KBJ1002, KBJ1004, KBJ1006, KBJ1008, KBJ1010KBJ4(3S)Bulk0.3K
    6AGBJ6005,GBJ601, GBJ602, GBJ604, GBJ606, GBJ608, GBJ610KBJ6(5S)Bulk0.3K
    8AGBJ8005,GBJ801, GBJ802, GBJ804, GBJ806, GBJ808, GBJ810KBJ6(5S)Bulk0.3K
    10AGBJ10005,GBJ1001, GBJ1002, GBJ1004, GBJ1006, GBJ1008, GBJ1010KBJ6(5S)Bulk0.3K
    15AGBJ15005,GBJ1501, GBJ1502, GBJ1504, GBJ1506, GBJ1508, GBJ1510KBJ6(5S)Bulk0.3K
    20AGBJ2005,GBJ2001, GBJ2002, GBJ12004, GBJ12006, GBJ2008, GBJ2010KBJ6(5S)Bulk0.3K




Publish: 2019/8/12 Category: Bridge Rectifiers Read: Times Comment: 0Times

WEET Surface Mount Rectifier SM4007 LL4007G Melf (DO213AB) 1A 1000V GPP Diodes

    WEE Technology Company Limited 

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    What is the difference between MELF and MiniMELF?

    Mini-MELF (SOD-80, DO-213AA,LL-34), smaller size

    MELF (DO-213AB), larger size

    MELF (Metal Electrode Leadless Face) packages held popularity because of their typically higher operating temperatures, reliability, and accuracy

    MELF General Purpose Rectifiers SM4007 Surface Mount Glass Passivated Silicon Rectifier (Voltage Range 50 to 1000 Volts Current 1.0 Ampere)


    https://www.weetcl.com/pdf/WEET_Melf_SM4001_THRU_SM4007.PDF



Publish: 2019/8/8 Category: Schottey Barrier Rectifiers Read: Times Comment: 0Times

WEET TVS Diode SMDJ Series Bidirectional Surface Mount 3000W DO-214AB SMC Package

    WEE Technology Company Limited 

    Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers


    • For surface mounted applications in order to optimize board space

    • Low profile package

    • Built-in strain relief

    • Glass passivated junction

    • Low inductance

    • Excellent clamping capability

    • Repetition rate (duty cycle):0.01%

    • Fast response time: typically less than 1.0 ps from 0 volts to BV for unidirectional types

    • Typical IR less than 1µA above 10V

    • High temperature soldering: 260°C/10 seconds at terminals

    • Plastic package has Underwriters Laboratory Flammability Classification 94 V-O

    • Case: JEDEC DO214AB. Molded plastic over glass passivated junction

    • Terminals: Solder plated, solderable per MIL-STD-750, Method 2026

    • Polarity: Color band denoted positive end (cathode)except Bidirectional


    WEET Part Number Add C For Bi-Directional
    SMDJ5.0(C)ASMDJ22(C)ASMDJ85(C)A
    SMDJ6.0(C)ASMDJ24(C)ASMDJ90(C)A
    SMDJ6.5(C)ASMDJ26(C)ASMDJ100(C)A
    SMDJ7.0(C)ASMDJ28(C)ASMDJ110(C)A
    SMDJ7.5(C)ASMDJ30(C)ASMDJ120(C)A
    SMDJ8.0(C)ASMDJ33(C)ASMDJ130(C)A
    SMDJ8.5(C)ASMDJ36(C)ASMDJ150(C)A
    SMDJ9.0(C)ASMDJ40(C)ASMDJ160(C)A
    SMDJ10(C)ASMDJ43(C)ASMDJ170(C)A
    SMDJ11(C)ASMDJ45(C)ASMDJ180(C)A
    SMDJ12(C)ASMDJ48(C)ASMDJ190(C)A
    SMDJ13(C)ASMDJ54(C)ASMDJ200(C)A
    SMDJ14(C)ASMDJ58(C)ASMDJ220(C)A
    SMDJ15(C)ASMDJ60(C)ASMDJ250(C)A
    SMDJ16(C)ASMDJ64(C)ASMDJ300(C)A
    SMDJ17(C)ASMDJ70(C)ASMDJ350(C)A
    SMDJ18(C)ASMDJ75(C)ASMDJ400(C)A
    SMDJ20(C)ASMDJ78(C)ASMDJ440(C)A


Publish: 2019/8/5 Category: Transient Voltage Suppressors Read: Times Comment: 0Times
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