component

SM6T18CA

Public Made by Adom

by adom

STMicroelectronics ESD And Surge Protection (TVS/ESD), SMB(DO-214AA). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

componentcircuit protectionsm6t18cafactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
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 23d ago
viewers sm6t18ca: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
package.json Publish 0.1.0 · Ray 23d ago
page.json Set visibility: public · Ray 23d ago
README.md Publish 0.1.0 · Ray 23d ago
sm6t18ca-etched.glb Publish 0.1.0 · Ray 23d ago
sm6t18ca-etched.step sm6t18ca: factory component page (tier=lcsc) · Ray 23d ago
sm6t18ca-hero.glb sm6t18ca: hero GLB from the etched model (keeps the MPN mark) · Ray 23d ago
sm6t18ca-hero.overlay.json Publish 0.1.0 · Ray 23d ago
sm6t18ca.glb Publish 0.1.0 · Ray 23d ago
sm6t18ca.kicad_mod Publish 0.1.0 · Ray 23d ago
sm6t18ca.kicad_sym sm6t18ca: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
sm6t18ca.lbr sm6t18ca: symbol repaired (D_Zener, cathode pad 1) · Ray 3d ago
sm6t18ca.step Publish 0.1.0 · Ray 23d ago

SM6T18CA

STMicroelectronics · ESD And Surge Protection (TVS/ESD) · SMB(DO-214AA)

SM6T18CA 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

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 25 °C IRM 0.2 µA @VRM, 25 °C 3
Reverse leakage current at 85 °C IRM 1 µA @VRM, 85 °C 3
Breakdown voltage VBR 17.1 18 18.9 V @IR = 1 mA; pulse test tp < 50 ms 3
Clamping voltage 10/1000 µs VCL 25.2 V @IPP = 24 A, 10/1000 µs 3
Dynamic resistance 10/1000 µs RD 0.263 Ω 10/1000 µs 3
Clamping voltage 8/20 µs VCL 32.5 V @IPP = 123 A, 8/20 µs 3
Dynamic resistance 8/20 µs RD 0.111 Ω 8/20 µs 3
Peak pulse power dissipation PPP 600 W Tj initial = Tamb; 10/1000 µs 2
Storage temperature range Tstg -65 150 2
Operating junction temperature range Tj -55 150 °C 2
Maximum lead temperature for soldering TL 260 during 10 s 2
Voltage temperature coefficient αT 8.8 10-4/ °C 3
Thermal resistance junction to leads Rth(j-l) 20 °C/W Junction to leads 2
Thermal resistance junction to ambient Rth(j-a) 100 °C/W on printed circuit on recommended pad layout 2

CAD (KiCad official)

  • Symbol: SM6T18CA
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
  • 3D model files: sm6t18ca-etched.step / sm6t18ca-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sm6t18ca.step / sm6t18ca.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (10 pp, sha256 9340708960a8d7f6, retrieved 2026-10-16, 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