component
CMPZ5242B TR PBFREE
Public Made by Adomby adom
Central Semicon Zener Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327
{
"schema_version": 1,
"type": "component",
"slug": "cmpz5242b-tr-pbfree",
"title": "CMPZ5242B TR PBFREE",
"brief": "Central Semicon Zener Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"diodes",
"cmpz5242b tr pbfree",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "CMPZ5242B TR PBFREE",
"manufacturer": "Central Semicon",
"package": "SOT-23",
"pin_count": 3,
"category": "Diodes",
"subcategory": "Zener Diodes",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/4b6b2d5960bc854d37a359c8a9bff35f.pdf",
"parts": {
"symbol": "cmpz5242b-tr-pbfree.kicad_sym",
"footprint": "cmpz5242b-tr-pbfree.kicad_mod",
"model_3d": "cmpz5242b-tr-pbfree-hero.glb",
"model_3d_plain": "cmpz5242b-tr-pbfree-etched.glb",
"model_3d_step": "cmpz5242b-tr-pbfree-etched.step",
"model_3d_step_plain": "cmpz5242b-tr-pbfree.step",
"lbr": "cmpz5242b-tr-pbfree.lbr"
},
"distributor_links": {
"lcsc": "C5240497"
},
"distributor_check": {
"checked_at": "2026-10-22T18:47:27Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "Anode",
"type": "passive",
"description": "Anode of the zener diode; the datasheet lists lead code 1 as Anode (VF=0.9V max at IF=10mA)."
},
{
"number": "2",
"name": "NC",
"type": "unconnected",
"description": "No connection, per the datasheet lead code for the SOT-23 case."
},
{
"number": "3",
"name": "Cathode",
"type": "passive",
"description": "Cathode of the zener diode; the CMPZ5242B has a nominal VZ of 12V (11.40V to 12.60V) at IZT=20mA."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-sonnet-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [],
"pages_sent": 3,
"cost_usd": 0.0432,
"at": "2026-10-22T18:47:11"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/4b6b2d5960bc854d37a359c8a9bff35f.pdf",
"pages": 3,
"sha256": "8539b162a192d6fe",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 3,
"described": 3,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "cmpz5242b-tr-pbfree.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.5,
3,
1.2
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
"checked": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "cmpz5242b-tr-pbfree-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.5,
3,
1.2
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "ecce867ad3592ddb6a67419e7fe697d2a2a5741e9ae99cc19b36ae6786225d3b",
"checked": "2026-10-22",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Central Semicon",
"Package": "SOT-23",
"Category": "Diodes",
"Pins": "3"
},
"appearance": {
"contacts": {
"quote": "1. If requesting Tin/Lead plated devices, add the suffix “ TIN/LEAD” to the part number when ordering (example: 2N2222A TIN/LEAD).",
"page": 3,
"doc": "ds.pdf",
"plating": "tin"
},
"version": 1,
"datasheet_sha256": "8539b162a192d6fe1de5bad53faf245f71b4ff83128f0cc29fd8ab8201ed7df5"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "8539b162a192d6fe1de5bad53faf245f71b4ff83128f0cc29fd8ab8201ed7df5",
"rows": [
{
"name": "Zener Voltage",
"symbol": "VZ",
"kind": "electrical",
"unit": "V",
"min": 11.4,
"typ": 12,
"max": 12.6,
"conditions": "@ IZT=20mA, TA=25°C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Zener Test Current",
"symbol": "IZT",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 20,
"max": null,
"conditions": "TA=25°C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Maximum Zener Impedance",
"symbol": "ZZT",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": null,
"max": 30,
"conditions": "@ IZT=20mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Maximum Zener Impedance (knee)",
"symbol": "ZZK",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": null,
"max": 600,
"conditions": "@ IZK=0.25mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Maximum Reverse Current",
"symbol": "IR",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": null,
"max": 1,
"conditions": "@ VR=9.1V",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Forward Voltage",
"symbol": "VF",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.9,
"conditions": "@ IF=10mA",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Power Dissipation",
"symbol": "PD",
"kind": "absolute_maximum",
"unit": "mW",
"min": null,
"typ": null,
"max": 350,
"conditions": "TA=25°C",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Operating and Storage Junction Temperature",
"symbol": "TJ, Tstg",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "VZ Tolerance",
"symbol": "",
"kind": "tolerance",
"unit": "%",
"min": -5,
"typ": null,
"max": 5,
"conditions": "\"B\" suffix",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Temperature Coefficient of VZ",
"symbol": "ΘVZ",
"kind": "temperature_coefficient",
"unit": "%/°C",
"min": null,
"typ": 0.077,
"max": null,
"conditions": "",
"source_page": 1,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"cmpz5242b tr pbfree"
],
"discovery_pitch": "CMPZ5242B TR PBFREE (Central Semicon) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"cmpz5242b-tr-pbfree.kicad_sym",
"cmpz5242b-tr-pbfree.kicad_mod",
"cmpz5242b-tr-pbfree.glb",
"cmpz5242b-tr-pbfree.step",
"cmpz5242b-tr-pbfree.lbr",
"docs/hero.png",
"docs/cmpz5242b-tr-pbfree-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"cmpz5242b-tr-pbfree-hero.glb",
"cmpz5242b-tr-pbfree-hero.overlay.json",
"cmpz5242b-tr-pbfree-etched.glb"
],
"visibility": {
"public": true
}
}