component

SMCJ40CA-AT

Public Made by Adom

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Brightking Elec (TAIWAN) TVS, 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.

componentcircuit protectionsmcj40ca-atfactory-2.0.0extractor-text

Changed since verified SMCJ40CA-AT

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 lcsc, 2 pinschanged since
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: SMCJ40CA-AT · SMC(DO-214AB) · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 6-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: D_SMC
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-ifh0vn6j/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.2)
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files! smcj40ca-at.kicad_sym✓ smcj40ca-at.kicad_mod✓ smcj40ca-at.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

SMCJ40CA-AT

Brightking Elec (TAIWAN) · TVS · SMC(DO-214AB)

SMCJ40CA-AT from Brightking Elec (TAIWAN), 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 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 Brightking Elec (TAIWAN)
Package SMC(DO-214AB)
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
Peak pulse power dissipation PPPM 1500 Watts 10/1000μs waveform (Note1, Note2, Fig.1) 1
Steady state power dissipation PM(AV) 6.5 Watts TA=50℃ (Fig.5) 1
Peak forward surge current IFSM 200 Amps 8.3ms single half sine-wave, superimposed on rated load (JEDEC Method) (Note3, Fig.6) 1
Operating junction and storage temperature range TJ,TSTG -55 150 ℃ 1
Breakdown voltage (SMCJ40CA-AT, marking BFR) VBR 44.4 49.1 V @IT = 1 mA 3
Maximum clamping voltage (SMCJ40CA-AT) VC 64.5 V @IPP = 23.3 A 3
Reverse leakage (SMCJ40CA-AT) IR 1 μA @VRWM 3
Reverse stand-off voltage (SMCJ40CA-AT) VRWM 40 V 3
Typical thermal resistance junction to lead RθJL 15 ℃/W Typical 1
Typical thermal resistance junction to ambient RθJA 75 ℃/W Typical 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 8.0mm×8.0mm copper pads to each terminal. 1

CAD (KiCad official)

  • Symbol: SMCJ40CA-AT
  • Footprint: Diode_SMD:D_SMC
  • 3D model: SMC(DO-214AB) (KiCad packages3D, STEP)
  • 3D model files: smcj40ca-at-etched.step / smcj40ca-at-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smcj40ca-at.step / smcj40ca-at.glb are the bare package body.

Provenance

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

  • Datasheet: Brightking Elec (TAIWAN) datasheet (6 pp, sha256 7e72475ef0547e76, retrieved 2026-10-30, tier: lcsc)
  • 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