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SA20A

Public Made by Adom

by adom

EIC Semicon TVS, DO-41. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SA20A

EIC Semicon · TVS · DO-41

SA20A from EIC Semicon, in a DO-41. 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 end of the unidirectional TVS, marked by the color band; connected to the positive side, with VRWM 20.0 V, VBR 22.2-24.5 V at 1.0 mA, and max clamping voltage 32.4 V at 15.4 A for SA20A.
2 A passive Anode end of the unidirectional TVS (no band); for SA20A it conducts in reverse breakdown above VBR min 22.2 V, with 500 W peak pulse power (1 ms) capability.

Key specifications

Parameter Value
Manufacturer EIC Semicon
Package DO-41
Category TVS/Fuse/Board Level 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 22.2 24.5 V @ It = 1.0 mA 2
Test Current It 1 mA VBR measured after It applied for 300 µs 2
Working Peak Reverse Voltage VRWM 20 V 2
Maximum Reverse Leakage Current IR 1 µA @ VRWM 2
Maximum Reverse Surge Current IRSM 15.4 A 2
Maximum Clamping Voltage VRSM 32.4 V @ IRSM 2
Temperature Variation of VBR 23 mV/°C 2
Peak Power Dissipation PPK 500 W Ta = 25 °C, Tp=1ms (Note 1) 1
Steady State Power Dissipation PD 3 W TL = 75 °C, lead lengths 0.375" (9.5mm) (Note 2) 1
Operating and Storage Temperature Range TJ, TSTG -65 175 °C 1

CAD (KiCad official)

  • Symbol: SA20A
  • Footprint: Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal
  • 3D model: DO-41 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: EIC Semicon datasheet (4 pp, sha256 9697f9ad0c78b23a, 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