component

ASMCJ24CA

Public Made by Adom

by adom

PTTC(Polytronics Tech) ESD And Surge Protection (TVS/ESD), SMCJ. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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ASMCJ24CA

PTTC(Polytronics Tech) · ESD And Surge Protection (TVS/ESD) · SMCJ

ASMCJ24CA from PTTC(Polytronics Tech), in a SMCJ. 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 A1 passive Bi-directional TVS terminal with 24.0 V reverse stand-off, 26.7-29.5 V breakdown at 1 mA, and 38.9 V maximum clamping at 38.6 A; interchangeable with the other terminal.
2 A2 passive Bi-directional TVS terminal with 24.0 V reverse stand-off, 26.7-29.5 V breakdown at 1 mA, and 38.9 V maximum clamping at 38.6 A; interchangeable with the other terminal, no cathode band on bidirectional parts.

Key specifications

Parameter Value
Manufacturer PTTC(Polytronics Tech)
Package SMCJ
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 VR 24 V 2
Breakdown Voltage VBR 26.7 29.5 V @ IT = 1 mA 2
Test Current IT 1 mA 2
Maximum Clamping Voltage VC 38.9 V @ IPP = 38.6 A 2
Maximum Peak Pulse Current IPP 38.6 A 2
Maximum Reverse Leakage IR 1 A @ VR = 24.0 V 2
VBR voltage tolerance (suffix A) -5 5 % A: 5% 1
Peak Pulse Power Dissipation PPPM 1500 Watt 10/1000s waveform (Note 1, Fig.1) 1
Steady State Power Dissipation PM(AV) 6.5 Watt TL = 75°C, Lead lengths 0.375” (9.5mm) (Fig.5) 1
Peak Forward Surge Current IFSM 200 Amp 8.3 ms Single Half Sine Wave Superimposed on Rated Load (Note 2, Fig.6) 1
Operating Junction and Storage Temperature Range TJ, TSTG -55 150 °C 1
Peak Reflow Temperature 260 ºC Peak Temperature 5

CAD (KiCad official)

  • Symbol: ASMCJ24CA
  • Footprint: Diode_SMD:D_SMC
  • 3D model: SMCJ (KiCad packages3D, STEP)
  • 3D model files: asmcj24ca-etched.step / asmcj24ca-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); asmcj24ca.step / asmcj24ca.glb are the bare package body.

Provenance

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

  • Datasheet: PTTC(Polytronics Tech) datasheet (6 pp, sha256 b93ff0dbe361fa93, retrieved 2026-10-22, 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