component
SMCJ30A
Public Made by Adomby adom
TWGMC TVS, DO-214AB(SMC). 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
markdownSMCJ30A
TWGMC · TVS · DO-214AB(SMC)
SMCJ30A from TWGMC, in a DO-214AB(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 of the unidirectional SMCJ30A transient voltage suppressor, per the series PINNING table (pin 1 = Cathode); the datasheet gives no further electrical limit for this pin. |
| 2 | Anode | passive | Anode of the unidirectional SMCJ30A transient voltage suppressor, per the series PINNING table (pin 2 = Anode); the datasheet gives no further electrical limit for this pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TWGMC |
| Package | DO-214AB(SMC) |
| 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 | VBR | 33.3 | 36.8 | V | @IT = 1 mA (test current); SMCJ30A unidirectional | 2 | |
| Maximum clamping voltage | VC | 48.4 | V | @IPP = 31.0 A peak pulse current | 2 | ||
| Reverse leakage current | IR | 1 | μA | @VRWM = 30.0 V | 2 | ||
| Reverse stand-off voltage | VRWM | 30 | V | Unidirectional SMCJ30A | 2 | ||
| Peak pulse power dissipation | PPPM | 1500 | W | 10/1000 us waveform | 1 | ||
| Peak forward surge current | IFSM | 200 | A | 8.3 ms single half sine-wave, superimposed on rated load (JEDEC method) | 1 | ||
| Maximum instantaneous forward voltage | VF | 3.5 | V | at 100 A, unidirectional only | 1 | ||
| Power dissipation on infinite heat sink | PD | 6.5 | W | TA = 50°C, infinite heat sink | 1 | ||
| Operating junction and storage temperature range | Tj, Tstg | -55 | 150 | °C | 1 | ||
| Typical thermal resistance junction to ambient | RθJA | 75 | °C/W | Note 1 (mounted on 8 mm land areas) | 1 | ||
| Typical thermal resistance junction to lead | RθJL | 15 | °C/W | 1 |
CAD (KiCad official)
- Symbol:
SMCJ30A - Footprint:
Diode_SMD:D_SMC - 3D model: DO-214AB(SMC) (KiCad packages3D, STEP)
- 3D model files:
smcj30a-etched.step/smcj30a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smcj30a.step/smcj30a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TWGMC datasheet (5 pp, sha256
2bb7845336b777a3, retrieved 2026-10-21, 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).