component

SM4T15AY

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by adom

STMicroelectronics TVS, 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.

componenttvs-fuse-board level protectionsm4t15ayfactory-2.0.0extractor-text

Verified SM4T15AY

by Ray · last 31 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier mfr, 2 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: SM4T15AY · SMA(DO-214AC) · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: unpolarised two-terminal part: pins 1 and 2 by library convention, no names to check
  • ✓distributor: lcsc C5267612, digikey 497-11794-2-ND, mouser 511-SM4T15AY
  • ✓family: D_SMA
  • ✓files: 6 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-i0a9jnb0/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 1 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.7)
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 1 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ sm4t15ay.kicad_sym✓ sm4t15ay.kicad_mod✓ sm4t15ay.step
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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

markdown

SM4T15AY

STMicroelectronics · TVS · SMA(DO-214AC)

SM4T15AY 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 1 passive Terminal 1 of an unpolarised fuse; either orientation.
2 2 passive Terminal 2 of an unpolarised fuse; either orientation.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SMA(DO-214AC)
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
Peak pulse power dissipation PPP 400 W Tj initial = Tamb 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
Peak pulse voltage contact discharge VPP 30 kV IEC 61000-4-2 (C = 150 pF, R = 330 Ω) 2
Peak pulse voltage air discharge VPP 30 kV IEC 61000-4-2 (C = 150 pF, R = 330 Ω) 2
Reverse leakage current IRM 0.2 µA at VRM, 25 °C 3
Reverse leakage current IRM 1 µA at VRM, 85 °C 3
Stand-off voltage VRM 13 V 3
Breakdown voltage VBR 14.4 15.2 16 V at IBR = 1 mA 3
Clamping voltage 10/1000 µs VCL 21.5 V 10/1000 µs, IPP = 18.6 A 3
Peak pulse current 10/1000 µs IPP 18.6 A 10/1000 µs 3
Dynamic resistance 10/1000 µs RD 0.298 Ω 10/1000 µs 3
Clamping voltage 8/20 µs VCL 27.2 V 8/20 µs, IPP = 85 A 3
Peak pulse current 8/20 µs IPP 85 A 8/20 µs 3
Dynamic resistance 8/20 µs RD 0.132 Ω 8/20 µs 3
Voltage temperature coefficient αT 8.4 10-4/°C 3

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 copper area under each lead 5

CAD (KiCad official)

  • Symbol: SM4T15AY
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: STMicroelectronics datasheet (14 pp, sha256 84e42de0a72418e4, retrieved 2026-10-31, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary two-terminal 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