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SMCJ43A
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), DO-214AB. 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
markdownSMCJ43A
Littelfuse · ESD And Surge Protection (TVS/ESD) · DO-214AB
SMCJ43A from Littelfuse, in a DO-214AB. 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 (positive end) of the unidirectional SMCJ43A, marked by the color band; VR 43.0 V stand-off, VBR 47.8 to 52.8 V at 1 mA. |
| 2 | A | passive | Anode terminal of the unidirectional SMCJ43A, opposite the cathode band, with a maximum clamping voltage of 69.4 V at 21.7 A Ipp. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | DO-214AB |
| Category | Circuit Protection |
| Pins | 2 |
CAD (KiCad official)
- Symbol:
SMCJ43A - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB (KiCad packages3D, STEP)
- 3D model files:
smcj43a-etched.step/smcj43a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smcj43a.step/smcj43a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
29531c61c5717811, retrieved 2026-10-13, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+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).