At the same time, both festivals celebrate together. Wishing the great motherland.
he mountains and rivers are vast, and the world is filled with fireworks. Wishing our motherland a happy 77th birthday and prosperity.

WEET holidays: Sept.25th for Mid-Autumn Festival, Oct.1st-7th for National Day.

During this holiday period, our company has arranged for relevant business colleagues to be on duty to handle urgent matters. 

If you have any inquiries or orders, please send an email to our company as usual. We will reply to you as soon as we resume work.

The emergency contact information is as follows, thank you for your attention and support.

Email: Tess@weetcap.com

Whatsapp/Wechat:0086 131 1327 6103

DB157 is a direct insertion (DIP/DB), while DB157S is a surface mount (SMT/DB-S). ‌‌

Comparison of core differences

Package type: DB157 adopts a direct insertion package (usually labeled as DB), with pins soldered through PCB holes; DB157S adopts surface mount packaging (marked as DB-S or DBS-4), with gull shaped pins directly attached to the PCB surface.

Installation process: DB157 requires wave soldering or manual insertion, with a relatively large volume, which is conducive to manual maintenance; DB157S is compatible with reflow soldering automation production lines, with a compact size and space saving features.

Dimensional features: DB157 body is relatively thick (about 4-5mm+pin length); DB157S is designed with a thin profile (approximately 2.15-2.8mm in height) and measures approximately 8.5x6.5mm in length and width.

Application scenarios: DB157 is commonly found in traditional power supplies and situations that require high heat dissipation or mechanical strength; DB157S is widely used for miniaturized SMT circuit boards such as mobile phone chargers and LED drivers. ‌‌

Electrical parameters (both applicable)

The electrical specifications of the two are completely identical and can be considered as different packaging versions of the same series:

Average rectified current: 1.5A

Reverse peak voltage: 1000V (1kV)

Surge current: 50A

Positive voltage drop: approximately 1.1V @ 1.5A

Working temperature: -55 ℃~+150 ℃

Selection suggestions

If the circuit board is designed for through hole insertion (THT) and there is ample space, choose DB157; 

If it is surface mount technology (SMT) or pursuing miniaturization, DB157S must be selected. The electrical performance exchange between the two has no impact, but the physical packaging cannot be mixed. ‌‌

Dear Customers,

Please be informed that our company will be closed for the Dragon Boat Festival holiday from June 19, 2026, to June 21, 2026. We will resume normal operations on June 22, 2026.

During this period, responses to emails and inquiries may be delayed. We appreciate your understanding and continued support.

Wishing you peace, health, and happiness.

Thank you for your trust in WEET.

It actually originates from a physicist named Walter H. Schottky, who invented it. Unlike conventional diodes using a P-N junction, the SS14 Schottky barrier diode is uniquely crafted based on the direct contact between a metal and a semiconductor.

The SS14 diode is crucial for rectification and circuit protection. It allows current to flow in only one direction, effectively preventing short circuits and protecting the system. Thanks to its compact structure and small footprint, the SS14 fits perfectly into various modern devices, making it a go-to choice for global buyers.

Now, here comes the most critical question: Do you know how to judge if an SS14 diode is good or bad?

First, identify the polarity - the end marked with a white line is the cathode (negative). Set your multimeter to the diode test position and connect the probes:

• The Good Sign: In the forward direction (red probe to positive, black to negative), a good diode will show a regular voltage reading. When reversed, it must block current and display "1" or "OL".

• The Bad Sign: If it displays "1" or "OL" in both directions, or shows a reading/beeping when reversed, the diode is damaged.

As a leading China SS14 diode manufacturer, WEET specializes in high-quality diode manufacturing. Feel free to contact us anytime for your sourcing needs!

More details: WEE Technology SMA(DO-214AC) Surface Mount Schottky Barrier Rectifier SS12 THRU SS120 (SS12, SS14, SS15, SS16, SS18, SS110, SS115, SS120)

Package Cross Reference: Package Cross Reference_WEE Technology - Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers

Here is the introduction to it:

S1M fast recovery rectifiers Features:

• Suitable for surface-mount mounting applications.

• Features glass passivated junction design.

• Adopts low-profile package structure.

• Comes with built-in strain relief, perfectly suited for automated assembly placement.

SMA Package Diode Characteristics:

• SMA: Small Outline Package, surface mount, low profile, two terminals.

• Material: Plastic encapsulated, UL 94V-0 flammability rated, RoHS compliant.

• Suitable for automated placement, compatible with wave soldering and reflow soldering (High temperature soldering resistance: 250℃/10s).

If you need S1M fast recovery rectifiers, please feel free to contact WEET. We will customize the optimal solution for you.

More details: WEE Technology SMA(DO-214AC) General Purpose Plastic Rectifier S1A THRU S1Y (S1A, S1B, S1D, S1G, S1J, S1K, S1M, S1T, S1W, S1X, S1Y)

Welcome to our official website: WEE Technology - Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers

We would like to inform you that our office will be closed for the Chinese Labor Day holiday.

• Holiday Period: May 1st to May 5th, 2026 (5 days in total).

• Resume Work on: May 6th, 2026 (Wednesday).

Orders: We accept orders during the holiday, but processing, production and shipping will start from May 6th.

For urgent matters, please contact us.

• WhatsApp/Phone: +86 131 1327 6103

• Email: info@weetcap.com

We apologize for any inconvenience caused and appreciate your understanding

Introduction

Features

• Low forward voltage for high efficiency.

• Superior forward surge current capacity.

• Excellent high-temperature solderability.

• Minimal leakage current for reliable operation.

• 260℃/10s solder heat resistance, 5 lbs tensile strength on 9.5mm leads.

1A 1000V fast recovery rectifier diode Applications

• Inverters, LED drivers, control boards for small household appliances

• High-frequency rectification and feedback circuits in switching power supplies, chargers and adapters

• Can replace ordinary rectifier diodes in the same package, but attention should be paid to matching reverse recovery time and voltage rating

• If you’re looking for a reliable, cost-effective 1A 1000V fast recovery rectifier diode for your power supply and lighting designs, FR107 is your ideal choice.

We offer stable quality, competitive pricing and fast delivery.

Welcome to contact us for samples, datasheet or bulk inquiries.

More details:WEE Technology DO-41 Fast Recovery Rectifier FR101 THRU FR107 (FR101, FR102, FR103, FR104, FR105, FR106, FR107)

Welcome to our official website:WEE Technology - Manufacturer of Surface Mount (SMD) and Through Hole (DIP) Diodes & Rectifiers

Dear Partners & Valued Customers,

We would like to inform you of our holiday arrangement for Tomb Sweeping Day:

• Holiday Period: April 4th – 6th, 2026 (3 days)

• Back to Work: April 7th, 2026 (Tuesday)

During the holiday, order handling, shipping and inquiries will be suspended. We will process all matters promptly after we return.

Please kindly arrange your orders and logistics in advance. We apologize for any inconvenience caused and appreciate your understanding.

It is composed of two series-connected diodes, with one end connected to the power supply and the other grounded. 

It mainly provides two functions: amplitude limiting and circuit protection.

• It limits the signal amplitude in the circuit to ensure that the signal is transmitted within a reasonable range.

• As the later stage is the signal output terminal, the ROHS BAV99 diode can protect the circuit from damage in case of external power abnormalities.

The circuit adopts an emitter-follower structure. The voltage remains basically stable during operation, and the current is mainly amplified to improve the overall driving capability. That is because the standard amplitude of the CVBS signal is fixed at 0.7Vpp, and the sync signal is 1Vpp, which requires sufficient driving capability to ensure stable output.

In terms of interface protection, BAV99 works with ordinary diodes. Two 1N4148 diodes can be used together to replace BAV99, but BAV99 has smaller capacitance and lower signal loss, making it more suitable for the protection and amplitude limiting of high-frequency interfaces.

The above is the function of WEET ROHS BAV99 diode in computer motherboards. Please feel free to contact WEET if you have any needs.

WEET BAV99 series datasheet: WEE Technology SOT-23 BAV99 Surface Mount Fast Switching Diode

Click the image to visit the official WEET official website.

Warm greetings as the Chinese Spring Festival (Year of the Horse 2026) approaches

We would like to inform you of our upcoming Spring Festival holiday schedule:

• Holiday period: February 7 – February 25, 2026

• Resume work: February 26, 2026

During the holiday, order processing, shipment and customer service will be temporarily suspended. All inquiries and orders will be handled promptly upon our return.

We wish you a happy Spring Festival, prosperous business, and all the best in the Year of the Horse!