component
BAS21A_R1_00001
Public Made by Adomby adom
PANJIT International Switching Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"type": "component",
"slug": "bas21a-r1-00001",
"title": "BAS21A_R1_00001",
"brief": "PANJIT International Switching 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",
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"component": {
"mpn": "BAS21A_R1_00001",
"manufacturer": "PANJIT International",
"package": "SOT-23",
"pin_count": 3,
"category": "Diodes",
"subcategory": "Switching Diodes",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884453816590336",
"parts": {
"symbol": "bas21a-r1-00001.kicad_sym",
"footprint": "bas21a-r1-00001.kicad_mod",
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"model_3d_step": "bas21a-r1-00001-etched.step",
"model_3d_step_plain": "bas21a-r1-00001.step",
"lbr": "bas21a-r1-00001.lbr"
},
"distributor_links": {
"lcsc": "C268444"
},
"distributor_check": {
"checked_at": "2026-10-17T15:06:59Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "K1",
"type": "passive",
"description": "Cathode of the first diode in the BAS21A common-anode dual (250 V max reverse voltage, 0.2 A average rectified current)."
},
{
"number": "2",
"name": "K2",
"type": "passive",
"description": "Cathode of the second diode in the BAS21A common-anode dual (250 V max reverse voltage, 0.2 A average rectified current)."
},
{
"number": "3",
"name": "A",
"type": "passive",
"description": "Common anode of both diodes, shown as the single terminal on the opposite side of the package from the two cathodes."
}
],
"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+vision",
"consensus_model": "claude-opus-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The BAS21A common-anode drawing on page 1 shows one terminal on one side (common anode) and two cath; The datasheet gives no pin names, so K1, K2 and A are labels I chose from the schematic symbol.; The part is sold as BAS21A_R1_00001, which the ordering code on page 4 reads as BAS21A in a 7 inch t",
"vision extraction: provenance cannot be text-verified; needs consensus"
],
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"cost_usd": 0.2248,
"at": "2026-10-17T15:05:51"
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"datasheet": {
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"pages": 5,
"sha256": "f02cd511da461f80",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 3,
"described": 3,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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"footprint": "viewers/footprint.html"
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"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
"checked": "2026-10-17",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
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]
},
"metadata": {
"specs": {
"Manufacturer": "PANJIT International",
"Package": "SOT-23",
"Category": "Diodes",
"Pins": "3"
},
"characteristics": {
"version": 1,
"source": "datasheet",
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"rows": [
{
"name": "Maximum reverse voltage",
"symbol": "VR",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 250,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Peak reverse voltage",
"symbol": "VRRM",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 250,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Average rectified current",
"symbol": "IO",
"kind": "absolute_maximum",
"unit": "A",
"min": null,
"typ": null,
"max": 0.2,
"conditions": "at temp=25 oC",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Non-repetitive peak forward surge current",
"symbol": "IFSM",
"kind": "absolute_maximum",
"unit": "A",
"min": null,
"typ": null,
"max": 4,
"conditions": "t=1s",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Power dissipation",
"symbol": "PTOT",
"kind": "absolute_maximum",
"unit": "mW",
"min": null,
"typ": null,
"max": 250,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Typical thermal resistance, junction to ambient",
"symbol": "RθJA",
"kind": "thermal",
"unit": "oC/W",
"min": null,
"typ": 357,
"max": null,
"conditions": "Note 1: Mounted on a FR-4 PCB, single-sided copper, mini pad",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Typical thermal resistance, junction to case",
"symbol": "RθJC",
"kind": "thermal",
"unit": "oC/W",
"min": null,
"typ": 250,
"max": null,
"conditions": "Note 2: Mounted on a FR-4 PCB, single-sided copper, with 100cm2 copper pad area",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Typical thermal resistance, junction to lead",
"symbol": "RθJL",
"kind": "thermal",
"unit": "oC/W",
"min": null,
"typ": 285,
"max": null,
"conditions": "Note 2: Mounted on a FR-4 PCB, single-sided copper, with 100cm2 copper pad area",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Junction temperature range",
"symbol": "TJ",
"kind": "thermal",
"unit": "oC",
"min": null,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Storage temperature range",
"symbol": "TSTG",
"kind": "thermal",
"unit": "oC",
"min": -55,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Reverse breakdown voltage",
"symbol": "V(BR)",
"kind": "electrical",
"unit": "V",
"min": 250,
"typ": null,
"max": null,
"conditions": "IR=100A",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Reverse current",
"symbol": "IR",
"kind": "electrical",
"unit": "A",
"min": null,
"typ": null,
"max": 0.1,
"conditions": "VR =200V",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Reverse current",
"symbol": "IR",
"kind": "electrical",
"unit": "A",
"min": null,
"typ": null,
"max": 100,
"conditions": "VR =200V TJ=150oC",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Forward voltage",
"symbol": "VF",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.7,
"conditions": "IF=1mA",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Forward voltage",
"symbol": "VF",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 1,
"conditions": "IF=100mA",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Maximum junction capacitance",
"symbol": "CJ",
"kind": "electrical",
"unit": "pF",
"min": null,
"typ": null,
"max": 5,
"conditions": "VR=0V,f=1MHz",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Reverse recovery time",
"symbol": "TRR",
"kind": "electrical",
"unit": "ns",
"min": null,
"typ": null,
"max": 50,
"conditions": "IF = IR=30mA RL=100",
"source_page": 2,
"source": "datasheet"
}
]
}
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"discovery_pitch": "BAS21A_R1_00001 (PANJIT International) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
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