SMCJ40CA
Public Made by Adomby adom
hongjiacheng Electrostatic And Surge Protection (TVS/ESD), SMC(DO-214AB). 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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README
markdownSMCJ40CA
hongjiacheng · Electrostatic And Surge Protection (TVS/ESD) · SMC(DO-214AB)
SMCJ40CA from hongjiacheng, in a SMC(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 | 1 | passive | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | hongjiacheng |
| Package | SMC(DO-214AB) |
| Category | TVS/Fuse/Board Level Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage (min) | VBR | 44.4 | V | @IT 1 mA | 3 | ||
| Breakdown voltage (max) | VBR | 49.1 | V | @IT 1 mA | 3 | ||
| Maximum clamping voltage | VC | 64.5 | V | @IPP 23.3 A | 3 | ||
| Reverse leakage | IR | 1 | μA | @VRWM 40 V | 3 | ||
| Peak pulse power dissipation | PPPM | 1500 | W | 10/1000µs waveform (Fig.1)(Note 1), (Note 2) | 1 | ||
| Power dissipation on infinite heat sink | PM(AV) | 6.5 | W | TL=75°C | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -55 | 150 | ℃ | 1 | ||
| Maximum temperature coefficient of VBR | ΔVBR | 0.1 | % x VBR@25℃ x ΔT | Typical maximum | 1 | ||
| Typical thermal resistance junction to lead | RθJ-L | 15 | ℃/W | 1 | |||
| Typical thermal resistance junction to ambient | RθJ-A | 75 | ℃/W | Mounted on 5.0mm x 5.0mm (0.03mm thick) copper pads to each terminal (Note 2) | 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 | •Matte tin lead-free Plated •Halogen free and RoHS compliant | 1 |
CAD (KiCad official)
- Symbol:
SMCJ40CA - Footprint:
Diode_SMD:D_SMC - 3D model: SMC(DO-214AB) (KiCad packages3D, STEP)
- 3D model files:
smcj40ca-etched.step/smcj40ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smcj40ca.step/smcj40ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: hongjiacheng datasheet (5 pp, sha256
5cbe7c34174b4905, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal 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).