component

SMCJ12A-TR

Public Made by Adom

by adom

STMicroelectronics TVS, SMC. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

componentcircuit protectionsmcj12a-trfactory-2.0.0extractor-text

Changed since verified SMCJ12A-TR

by Ray · last 30 Oct 2026 · 1 record · files changed since
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 2 pinschanged since
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: SMCJ12A-TR · SMC · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 12-page datasheet
  • ✓distributor: lcsc C1981751, digikey 497-SMCJ12A-TR-ND, mouser 511-SMCJ12A-TR
  • ✓family: D_SMC
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-0fl94rz2/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.6)
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files! smcj12a-tr.kicad_sym✓ smcj12a-tr.kicad_mod✓ smcj12a-tr.step
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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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Contents

README

markdown

SMCJ12A-TR

STMicroelectronics · TVS · SMC

SMCJ12A-TR from STMicroelectronics, 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 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 STMicroelectronics
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 (min to max) VBR 13.3 14 V at IR = 1 mA 3
Reverse leakage current IRM at 25 °C IRM 0.2 µA at VRM, 25 °C 3
Reverse leakage current IRM at 85 °C IRM 1 µA at VRM, 85 °C 3
Clamping voltage VCL, 10/1000 µs VCL 19.9 V 10/1000 µs, IPP = 79 A (same row) 3
Peak pulse current IPP, 10/1000 µs IPP 79 A 10/1000 µs 3
Dynamic resistance RD, 10/1000 µs RD 0.066 Ω 10/1000 µs 3
Clamping voltage VCL, 8/20 µs VCL 25.3 V 8/20 µs, IPP = 394 A (same row) 3
Peak pulse current IPP, 8/20 µs IPP 394 A 8/20 µs 3
Dynamic resistance RD, 8/20 µs RD 27 mΩ 8/20 µs 3
VBR temperature coefficient αT αT 8.3 10-4/°C VBR at Tj = VBR at 25 °C × (1 + αT × (Tj − 25)), per footnote 1 3
Peak pulse voltage, contact discharge VPP 30 kV IEC 61000-4-2 (C = 150 pF, R = 330 Ω), contact discharge 2
Peak pulse voltage, air discharge VPP 30 kV IEC 61000-4-2 (C = 150 pF, R = 330 Ω), air discharge 2
Peak pulse power dissipation PPP 1500 W Tj initial = Tamb 2
Storage temperature range Tstg -65 150 °C 2
Operating junction temperature range Tj -55 150 °C 2
Maximum lead temperature for soldering TL 260 °C during 10 s 2

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 • Lead finishing: matte tin plating Complies with the following standards 1

CAD (KiCad official)

  • Symbol: SMCJ12A-TR
  • Footprint: Diode_SMD:D_SMC
  • 3D model: SMC (KiCad packages3D, STEP)
  • 3D model files: smcj12a-tr-etched.step / smcj12a-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smcj12a-tr.step / smcj12a-tr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (12 pp, sha256 c130bf5265b0e135, retrieved 2026-10-30, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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).

Datasheet PDF