3.0SMCJ20CA
Public Made by Adomby adom
Littelfuse ESD And Surge Protection (TVS/ESD), DO-214AB(SMCJ). 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
markdown3.0SMCJ20CA
Littelfuse · ESD And Surge Protection (TVS/ESD) · DO-214AB(SMCJ)
3.0SMCJ20CA from Littelfuse, in a DO-214AB(SMCJ). 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 | Littelfuse |
| Package | DO-214AB(SMCJ) |
| Category | Circuit 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 (bi-directional, 3.0SMCJ20CA) | VBR | 22.2 | 24.5 | V | @ IT = 1 mA | 2 | |
| Maximum reverse leakage current | IR | 2 | µA | @ VR | 2 | ||
| Maximum clamping voltage (10/1000µs) | VC | 32.4 | V | @ Ipp (10/1000µs) | 2 | ||
| Maximum peak pulse current (10/1000µs) | Ipp | 92.6 | A | 10/1000µs | 2 | ||
| Maximum clamping voltage (8/20µs) | VC | 41.86 | V | @ Ipp (8/20µs) | 2 | ||
| Maximum peak pulse current (8/20µs) | Ipp | 463 | A | 8/20µs | 2 | ||
| Maximum temperature coefficient of VBR | 0.091 | %/C | 2 | ||||
| Peak pulse power dissipation | PPPM | 3000 | W | 10/1000µs waveform (Fig. 4), Notes 1, 2 | 1 | ||
| Power dissipation on infinite heatsink | PD | 6.5 | W | TC = 25 °C, infinite heatsink | 1 | ||
| Operating temperature range | TJ | -65 | 150 | °C | 1 | ||
| Storage temperature range | TSTG | -65 | 175 | °C | 1 | ||
| Typical thermal resistance junction to lead | RθJL | 15 | °C/W | 1 | |||
| Typical thermal resistance junction to ambient | RθJA | 75 | °C/W | 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 | copper | 2. Mounted on copper pad area of 0.31x0.31” (8.0 x 8.0mm) to each terminal. | 1 |
CAD (KiCad official)
- Symbol:
3.0SMCJ20CA - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB(SMCJ) (KiCad packages3D, STEP)
- 3D model files:
3-0smcj20ca-etched.step/3-0smcj20ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);3-0smcj20ca.step/3-0smcj20ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (6 pp, sha256
53531fb5f0ed34c5, retrieved 2026-10-16, 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).