component
BAV21W-MS
Public Made by Adomby adom
MSKSEMI 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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README
markdownBAV21W-MS
MSKSEMI · Switching Diodes · SOD-123
BAV21W-MS from MSKSEMI, 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 | MSKSEMI |
| 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 current | IR | 0.1 | uA | VR=200V (BAV21W-MS) | 2 | ||
| Forward voltage | VF | 1 | V | IF=100mA | 2 | ||
| Forward voltage | VF | 1.25 | V | IF=200mA | 2 | ||
| Total capacitance | Ctot | 5 | pF | VR=0V, f=1MHz | 2 | ||
| Reverse recovery time | trr | 50 | ns | IF= IR =30mA, Irr=0.1*IR, RL=100Ω | 2 | ||
| Non-Repetitive Peak Reverse Voltage | VRM | 250 | V | 2 | |||
| Peak Repetitive Reverse Voltage | VRRM | 200 | V | 2 | |||
| Working Peak Reverse Voltage | VRWM | 200 | V | 2 | |||
| RMS Reverse Voltage | VR(RMS) | 141 | V | 2 | |||
| Average Rectified Output Current | IO | 200 | mA | 2 | |||
| Non-repetitive Peak Forward Surge Current | IFSM | 2 | A | t=8.3ms | 2 | ||
| Power Dissipation | PD | 500 | mW | 2 | |||
| Thermal Resistance from Junction to Ambient | RθJA | 250 | ℃/W | 2 | |||
| Operation Junction and Storage Temperature Range | TJ,Tstg | -55 | 150 | ℃ | 2 |
CAD (KiCad official)
- Symbol:
BAV21W-MS - Footprint:
Diode_SMD:D_SOD-123F - 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files:
bav21w-ms-etched.step/bav21w-ms-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bav21w-ms.step/bav21w-ms.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MSKSEMI datasheet (5 pp, sha256
f1582896427e289f, retrieved 2026-10-18, 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).