component
SMBJ400A
Public Made by Adomby adom
YFW ESD And Surge Protection (TVS/ESD), DO-214AA(SMB). Pinout cross-checked by two models against the datasheet, 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
markdownSMBJ400A
YFW · ESD And Surge Protection (TVS/ESD) · DO-214AA(SMB)
SMBJ400A from YFW, in a DO-214AA(SMB). 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 | Cathode | passive | Cathode terminal of the unipolar SMBJ400A (no CA suffix); for this part the datasheet gives reverse stand-off voltage VR = 400 V, breakdown VBR 447.00 V min to 494.00 V max at IT = 1 mA, and maximum clamping voltage VC 648 V at IPP 0.9 A. |
| 2 | Anode | passive | Anode terminal of the unipolar SMBJ400A (no CA suffix), which carries the surge current with the cathode; the datasheet rates the part for peak pulse power of 600 W (10/1000 µs waveform) and operating junction and storage temperature of -65 to +150 °C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | YFW |
| Package | DO-214AA(SMB) |
| Category | Circuit Protection |
| Pins | 2 |
CAD (KiCad official)
- Symbol:
SMBJ400A - Footprint:
Diode_SMD:D_SMB - 3D model: DO-214AA(SMB) (KiCad packages3D, STEP)
- 3D model files:
smbj400a-etched.step/smbj400a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj400a.step/smbj400a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: YFW datasheet (4 pp, sha256
15c4cd6b3a64c6dc, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(vision), consensusclaude-opus-5-5(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).