component
SM4T21AY
Public Made by Adomby 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.
main
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{
"schema": "adom/verification@1",
"part": "SM4T21AY",
"variants": [],
"entries": [
{
"date": "2026-10-30",
"by": {
"name": "Ray",
"handle": "ray"
},
"status": "verified",
"title": "Published by the parts factory: tier mfr, 2 pins",
"scope": [
"symbol",
"footprint",
"3d",
"pins"
],
"variants": [
"*"
],
"checks": [
{
"text": "component-page-verify: PASS",
"result": "pass"
},
{
"text": "cad_props: Datasheet, MPN and distributor properties match page.json",
"result": "pass"
},
{
"text": "component: SM4T21AY · SMA(DO-214AC) · 2 pins",
"result": "pass"
},
{
"text": "copper: 2 copper pads, none touching another net",
"result": "pass"
},
{
"text": "datasheet: all 2 pin names found in the 14-page datasheet",
"result": "pass"
},
{
"text": "distributor: lcsc C1974229, digikey 497-10910-2-ND, mouser 511-SM4T21AY",
"result": "pass"
},
{
"text": "family: D_SMA",
"result": "pass"
},
{
"text": "files: 7 declared files present",
"result": "pass"
},
{
"text": "hero: docs/hero.png 4000x2500",
"result": "pass"
},
{
"text": "lbr: OK: /tmp/cpv-fekrr8j9/x.lbr is a valid EAGLE .lbr with complete deviceset",
"result": "pass"
},
{
"text": "license: CC-BY-SA-4.0",
"result": "pass"
},
{
"text": "models_3d: 2 records",
"result": "pass"
},
{
"text": "package_fit: height and body within the datasheet's package drawing (datasheet p.7)",
"result": "pass"
},
{
"text": "pads: 2 pins = 2 pads",
"result": "pass"
},
{
"text": "pose: 2 STEP(s) Z-up, seated, centred",
"result": "pass"
},
{
"text": "symbol: 2 pins agree",
"result": "pass"
},
{
"text": "visibility: public, source open",
"result": "pass"
}
],
"evidence": [
{
"label": "datasheet",
"href": "https://www.st.com/resource/en/datasheet/sm4t21ay.pdf"
}
],
"files": {
"sm4t21ay.kicad_sym": "eed1b705f33126191743f571c0de8fa295a66c4657f173779af58791e0458f10",
"sm4t21ay.kicad_mod": "7117166da2144a57cebb871292e06163b984168d2789db6da1b180b8c0329e67",
"sm4t21ay.step": "1cfddd4e3b1bf22b8fc6ee3258c2aade882ed7b85b528e23b9db42437775a1db"
}
}
]
}