component
SMCJ18CA-L
Public Made by Adomby adom
Shandong Jingdao Microelectronics ESD And Surge Protection (TVS/ESD), SMC. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 23d ago |
| viewers | 2d ago |
| package.json | 23d ago |
| page.json | 23d ago |
| README.md | 23d ago |
| smcj18ca-l-etched.glb | 23d ago |
| smcj18ca-l-etched.step | 23d ago |
| smcj18ca-l-hero.glb | 23d ago |
| smcj18ca-l-hero.overlay.json | 23d ago |
| smcj18ca-l.glb | 23d ago |
| smcj18ca-l.kicad_mod | 23d ago |
| smcj18ca-l.kicad_sym | 2d ago |
| smcj18ca-l.lbr | 2d ago |
| smcj18ca-l.step | 23d ago |
SMCJ18CA-L
Shandong Jingdao Microelectronics · ESD And Surge Protection (TVS/ESD) · SMC
SMCJ18CA-L from Shandong Jingdao Microelectronics, in a SMC. 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 per the PINNING table (unipolar symbol); the datasheet gives no polarity assignment for the bidirectional CA variant, and the part is rated for 600 W peak pulse power at 10/1000 µs with a reverse stand-off voltage of 18 V. |
| 2 | Anode | passive | Anode terminal per the PINNING table (unipolar symbol); the datasheet gives no polarity assignment for the bidirectional CA variant, and the part's operating junction and storage range is -55 to +150 °C. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| Package | SMC |
| 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 (VBR) @ IT | VBR | 20 | 22.1 | V | @ IT 1 mA (row for SMCJ18CA-L, bidirectional) | 2 | |
| Maximum clamping voltage (VC) @ IPP | VC | 29.2 | V | @ IPP 20.6 A (row for SMCJ18CA-L) | 2 | ||
| Maximum reverse leakage current (IR) | IR | 1 | μA | at VRWM 18 V (reverse stand-off voltage) | 2 | ||
| Reverse stand-off voltage | VRMW | 18 | V | Bidirectional (CA) type, as printed in the characteristics table | 2 | ||
| Peak pulse current on 10/1000 us waveform | IPP | 20.6 | A | 10/1000 us waveform (table value for SMCJ18CA-L) | 2 | ||
| Peak pulse power dissipation on 10/1000 us waveform | PPPM | 600 | W | 10/1000 us waveform | 1 | ||
| Peak forward surge current | IFSM | 100 | A | 8.3 ms single half sine-wave, superimposed on rated load (JEDEC method) | 1 | ||
| Operating junction and storage temperature range | Tj, Tstg | -55 | 150 | °C | Operating junction and storage temperature | 1 | |
| Typical thermal resistance junction to ambient | RθJA | 75 | °C/W | Note 1 | 1 | ||
| Thermal resistance junction to lead | RθJL | 15 | °C/W | 1 |
CAD (KiCad official)
- Symbol:
SMCJ18CA-L - Footprint:
Diode_SMD:D_SMC - 3D model: SMC (KiCad packages3D, STEP)
- 3D model files:
smcj18ca-l-etched.step/smcj18ca-l-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smcj18ca-l.step/smcj18ca-l.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shandong Jingdao Microelectronics datasheet (4 pp, sha256
fe884aa643fb34c4, retrieved 2026-10-14, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).