component
BAV21WQ
Public Made by Adomby adom
Yangzhou Yangjie Elec Tech Switching Diodes, SOD-123. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownBAV21WQ
Yangzhou Yangjie Elec Tech · Switching Diodes · SOD-123
BAV21WQ from Yangzhou Yangjie Elec Tech, in a SOD-123. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SOD-123 |
| Category | Diodes |
| Pins | 2 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reverse Voltage (electrical, BAV21WQ) | VR | 200 | V | IR=100uA | 2 | ||
| Forward Voltage | VF | 1 | V | IF=100mA | 2 | ||
| Forward Voltage | VF | 1.25 | V | IF=200mA | 2 | ||
| Reverse Current (BAV21WQ) | IR | 0.1 | μA | VR=200V | 2 | ||
| Diode Capacitance | CD | 5 | pF | VR=VF=0V, f=1MHZ | 2 | ||
| Reverse Recovery Time | trr | 50 | ns | IF=30mA,Irr=0.1IR,RL=100Ω | 2 | ||
| Reverse Voltage (absolute maximum, BAV21WQ) | VR | 200 | V | 1 | |||
| Repetitive Peak Reverse Voltage (BAV21WQ) | VRRM | 250 | V | 1 | |||
| Average Forward Current | IFAV | 200 | mA | 1 | |||
| Non-Repetitive Peak Forward Surge Current | IFSM | 1.7 | A | tp<10ms | 1 | ||
| Power Dissipation | Ptot | 410 | mW | 1 | |||
| Thermal Resistance Junction to Ambient | RthJA | 305 | K/W | 1 | |||
| Maximum Junction Temperature | Tj | 150 | ℃ | 1 | |||
| Storage Temperature Range | Tstg | -55 | 150 | ℃ | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |
CAD (KiCad official)
- Symbol:
BAV21WQ - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
bav21wq-etched.step/bav21wq-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bav21wq.step/bav21wq.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Yangzhou Yangjie Elec Tech datasheet (4 pp, sha256
92ba3ae1ddf99e5f, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band convention(convention), consensusoff(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).