component

SM6T22AY

Public Made by Adom

by adom

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

componentcircuit protectionsm6t22ayfactory-2.0.0extractor-text

Changed since verified SM6T22AY

by Ray · last 2 Nov 2026 · 1 record · files changed since
SymbolFootprint3D modelPins

Verification log 1 record

2 Nov 2026RayPublished by the parts factory: tier mfr, 2 pinschanged since
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: SM6T22AY · SMB(DO-214AA) · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: all 2 pin names found in the 15-page datasheet
  • ✓distributor: lcsc C1974287, digikey 497-10933-2-ND, mouser 511-SM6T22AY
  • ✓family: D_SMB
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-ak2f0__6/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.7)
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files! sm6t22ay.kicad_sym✓ sm6t22ay.kicad_mod✓ sm6t22ay.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 5d ago
viewers sm6t22ay: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
package.json Publish 0.1.0 · Ray 5d ago
page.json Set visibility: public · Ray 5d ago
README.md Publish 0.1.0 · Ray 5d ago
sm6t22ay-etched.glb Publish 0.1.0 · Ray 5d ago
sm6t22ay-etched.step sm6t22ay: factory component page (tier=mfr) · Ray 5d ago
sm6t22ay-hero.glb sm6t22ay: hero GLB from the etched model (keeps the MPN mark) · Ray 5d ago
sm6t22ay-hero.overlay.json Publish 0.1.0 · Ray 5d ago
sm6t22ay.glb Publish 0.1.0 · Ray 5d ago
sm6t22ay.kicad_mod Publish 0.1.0 · Ray 5d ago
sm6t22ay.kicad_sym sm6t22ay: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
sm6t22ay.lbr sm6t22ay: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
sm6t22ay.step Publish 0.1.0 · Ray 5d ago
verification.json Verified: Published by the parts factory: tier mfr, 2 pins · Ray 5d ago

SM6T22AY

STMicroelectronics · TVS · SMB(DO-214AA)

SM6T22AY from STMicroelectronics, in a SMB(DO-214AA). 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 of the unidirectional TVS (SM6T22AY); for bidirectional types the two terminals are interchangeable, with 22 V stand-off and 30.6 V max clamping at 20 A (10/1000 µs).
2 A passive Anode of the unidirectional TVS (SM6T22AY), with 600 W peak pulse power (10/1000 µs) and 20.9-23.1 V breakdown at 1 mA.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SMB(DO-214AA)
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 leakage current at VRM IRM 0.2 µA at VRM, 25 °C 3
Reverse leakage current at VRM IRM 1 µA at VRM, 85 °C 3
Breakdown voltage VBR 20.9 22 23.1 V at IBR = 1 mA 3
Clamping voltage 10/1000 µs VCL 30.6 V 10/1000 µs, IPP = 20 A 3
Peak pulse current 10/1000 µs IPP 20 A 10/1000 µs 3
Dynamic resistance 10/1000 µs RD 0.375 Ω 10/1000 µs 3
Clamping voltage 8/20 µs VCL 39.3 V 8/20 µs, IPP = 102 A 3
Peak pulse current 8/20 µs IPP 102 A 8/20 µs 3
Dynamic resistance 8/20 µs RD 0.159 Ω 8/20 µs 3
Voltage temperature coefficient αT 9.2 10-4/°C 3
Peak pulse power dissipation PPP 600 W 10/1000 µs, Tj initial = Tamb 2
Peak pulse voltage ISO10605 contact discharge VPP 30 kV C = 330 pF, R = 330 Ω 2
Peak pulse voltage ISO10605 air discharge VPP 30 kV 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
Stand-off voltage VRM 18.8 V Table 2 first voltage column, Tamb = 25 °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 tin • Lead finishing: matte tin plating Complies with the following standards 1

CAD (KiCad official)

  • Symbol: SM6T22AY
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
  • 3D model files: sm6t22ay-etched.step / sm6t22ay-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sm6t22ay.step / sm6t22ay.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (15 pp, sha256 a139eecdd64ba8b1, retrieved 2026-11-02, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-opus-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