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SMCJ78CA-L

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Shandong Jingdao Microelectronics ESD And Surge Protection (TVS/ESD), SMC. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentcircuit protectionsmcj78ca-lfactory-2.0.0extractor-text

Verified SMCJ78CA-L

by Ray · last 6 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

6 Nov 2026RayPublished by the parts factory: tier lcsc, 2 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: SMCJ78CA-L · SMC · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 4-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-ygq4zrju/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ smcj78ca-l.kicad_sym✓ smcj78ca-l.kicad_mod✓ smcj78ca-l.step
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3D Model

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Symbol & Footprint

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PCB Footprint

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Datasheet

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Contents

README

markdown

SMCJ78CA-L

Shandong Jingdao Microelectronics · ESD And Surge Protection (TVS/ESD) · SMC

SMCJ78CA-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 Terminal 1 of the 2-lead SMC package, listed as Cathode in the pinning table; for the bipolar (CA) symbol the part is bidirectional, so this terminal is interchangeable with pin 2.
2 Anode passive Terminal 2 of the 2-lead SMC package, listed as Anode in the pinning table; for the bipolar (CA) symbol the part is bidirectional, so this terminal is interchangeable with pin 1.

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
Reverse stand-off voltage VRWM 78 V 2
Breakdown voltage (min) VBR 86.7 V @ IT=1 mA 2
Breakdown voltage (max) VBR 95.8 V @ IT=1 mA 2
Maximum clamping voltage VC 126 V @ IPP=4.8 A 2
Peak pulse current IPP 4.8 A 2
Maximum reverse leakage IR 1 μA at V (stand-off voltage) 2
Peak pulse power dissipation 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
Typical thermal resistance junction to ambient RθJA 75 °C/W Note 1 1
Typical thermal resistance junction to lead RθJL 15 °C/W 1
Operating junction and storage temperature range Tj, Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: SMCJ78CA-L
  • Footprint: Diode_SMD:D_SMC
  • 3D model: SMC (KiCad packages3D, STEP)
  • 3D model files: smcj78ca-l-etched.step / smcj78ca-l-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smcj78ca-l.step / smcj78ca-l.glb are 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 2026-11-06, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-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).

Datasheet PDF