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ASMAJ20CA

Public Made by Adom

by adom

PTTC Polytronics Tech ESD And Surge Protection (TVS/ESD), SMA(DO-214AC). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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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ASMAJ20CA

PTTC Polytronics Tech · ESD And Surge Protection (TVS/ESD) · SMA(DO-214AC)

ASMAJ20CA from PTTC Polytronics Tech, in a SMA(DO-214AC). 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 PTTC Polytronics Tech
Package SMA(DO-214AC)
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
VBR breakdown voltage (ASMAJ20CA, bidirectional) VBR 22.2 24.5 V @ IT = 1 mA 2
Maximum clamping voltage (ASMAJ20CA) VC 32.4 V @ IPP = 12.3 A 2
Maximum peak pulse current (ASMAJ20CA) IPP 12.3 A 2
Maximum reverse leakage current (ASMAJ20CA) IR 1 A @ VR = 20.0 V 2
Peak pulse power dissipation PPPM 400 Watt 10/1000s waveform (Note 1, Fig.1) 1
Steady state power dissipation PM(AV) 3.3 Watt TL = 75°C, lead lengths 0.375 in (9.5mm) (Fig.5) 1
Peak forward surge current IFSM 40 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
VBR voltage tolerance (blank suffix = 10%) -10 10 % Part number suffix blank (no A): 10% 1
Reverse stand-off voltage VR 20 V 2

CAD (KiCad official)

  • Symbol: ASMAJ20CA
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: asmaj20ca-etched.step / asmaj20ca-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); asmaj20ca.step / asmaj20ca.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 6d43c588bb484c12, retrieved 2026-10-15, 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