component

SM4T10AY

Public Made by Adom

by adom

STMicroelectronics TVS, SMA(DO-214AC). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentcircuit protectionsm4t10ayfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
sm4t10ay / README.md
History Download
Ray Publish 0.1.0 37407e1 15d ago

SM4T10AY

STMicroelectronics · TVS · SMA(DO-214AC)

SM4T10AY from STMicroelectronics, 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, marked by the cathode bar on the unidirectional SM4T10AY; connects to the protected line, with VRM 8.5 V stand-off, VBR 9.4 to 10.4 V at 1 mA, and VCL max 14.4 V at 27.7 A (10/1000 µs).
2 A passive Anode of the unidirectional SM4T10AY, normally connected to ground/return.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
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
Breakdown voltage VBR 9.4 9.9 10.4 V @ IR = 1 mA, Tamb = 25 °C 3
Stand-off voltage VRM 8.5 V Tamb = 25 °C 3
Leakage current max at VRM IRM 20 µA @ VRM, 25 °C 3
Leakage current max at VRM IRM 50 µA @ VRM, 85 °C 3
Clamping voltage 10/1000 µs VCL 14.4 V @ IPP = 27.7 A, 10/1000 µs 3
Dynamic resistance 10/1000 µs RD 0.145 Ω 10/1000 µs 3
Clamping voltage 8/20 µs VCL 19.5 V @ IPP = 124 A, 8/20 µs 3
Dynamic resistance 8/20 µs RD 0.073 Ω 8/20 µs 3
Voltage temperature coefficient αT 7.3 10-4/°C 3
Peak pulse power dissipation PPP 400 W Tj initial = Tamb, 10/1000 µs 2
Peak pulse voltage ISO 10605 contact discharge VPP 30 kV C = 150 pF, R = 330 Ω and C = 330 pF, R = 330 Ω 2
Peak pulse voltage ISO 10605 air discharge VPP 30 kV C = 150 pF, R = 330 Ω and C = 330 pF, R = 330 Ω 2
Storage temperature range Tstg -65 150 °C 2
Operating junction temperature range Tj -55 150 °C 2
Maximum lead temperature for soldering TL 260 °C during 10 s 2

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 ambient versus copper surface under each lead 5

CAD (KiCad official)

  • Symbol: SM4T10AY
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: sm4t10ay-etched.step / sm4t10ay-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sm4t10ay.step / sm4t10ay.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (12 pp, sha256 b8d3299b0200f7ea, retrieved 2026-10-23, tier: manufacturer)
  • 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