component
UM809RS
Public Made by Adomby adom
Union Semiconductor Supervisor And Reset ICs, SOT-23-3. 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": "um809rs",
"title": "UM809RS",
"brief": "Union Semiconductor Supervisor And Reset ICs, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
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"power management (pmic)",
"um809rs",
"factory-2.0.0",
"extractor-text"
],
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"subcategory": "Supervisor And Reset ICs",
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"footprint": "um809rs.kicad_mod",
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"model_3d_step_plain": "um809rs.step",
"lbr": "um809rs.lbr"
},
"distributor_links": {
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},
"distributor_check": {
"checked_at": "2026-10-17T19:16:05Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
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"status": "quota"
},
"mouser": {
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"status": "quota"
}
},
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"name": "GND",
"type": "power_in",
"description": "Ground pin of the supply, 0V reference for the reset supervisor."
},
{
"number": "2",
"name": "RESET",
"type": "output",
"description": "Push-pull active-low reset output (UM809), asserted within 10µs when VCC falls below the reset threshold and held for a 140ms minimum (240ms typ) timeout after VCC rises above it; output sources up to 20mA max and is valid down to VCC=1V."
},
{
"number": "3",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage input monitored against the reset threshold (2.63V typ for UM809RS), operating range 1.0V to 10V (absolute max -0.3 to +10V)."
}
],
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"factory_chain": {
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"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": [
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"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 14,
"cost_usd": 0.376,
"at": "2026-10-17T19:13:37"
},
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"pages": 14,
"sha256": "a8ef262a39510d83",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"described": 3,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
},
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"role": "plain",
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"units": "mm",
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"seat": "z = 0",
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"footprint_binding": "identity",
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"checked": "2026-10-17",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
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"role": "eda",
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"units": "mm",
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"sha256": "7eac87f3e5ec6350e67405a7049bb39fb7c63d4a4879caf755e6b65089680678",
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},
"metadata": {
"specs": {
"Manufacturer": "Union Semiconductor",
"Package": "SOT-23-3",
"Category": "Power Management (PMIC)",
"Pins": "3"
},
"characteristics": {
"version": 1,
"source": "datasheet",
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"symbol": "VCC",
"kind": "recommended_operating",
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"min": 1,
"typ": null,
"max": 10,
"conditions": "TA=0°C to +70°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "VCC Range (TA=-40°C to +85°C)",
"symbol": "VCC",
"kind": "recommended_operating",
"unit": "V",
"min": 1.2,
"typ": null,
"max": 10,
"conditions": "TA=-40°C to +85°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Supply Current (UM8_R/S/T/Z)",
"symbol": "ICC",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 3,
"max": 5,
"conditions": "VCC<3.6V, UM8_R/S/T/Z",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Reset Threshold UM8_R",
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"kind": "electrical",
"unit": "V",
"min": 2.54,
"typ": 2.63,
"max": 2.67,
"conditions": "TA=+25°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Reset Threshold UM8_R",
"symbol": "VTH",
"kind": "electrical",
"unit": "V",
"min": 2.51,
"typ": null,
"max": 2.69,
"conditions": "TA=-40°C to +85°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "Reset Active Timeout Period",
"symbol": "",
"kind": "timing",
"unit": "ms",
"min": 140,
"typ": 240,
"max": 360,
"conditions": "TA=-40°C to +85°C",
"source_page": 3,
"source": "datasheet"
},
{
"name": "RESET Output Voltage Low (Push-Pull Active Low, UM809R/S/T/Z)",
"symbol": "VOL",
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"min": null,
"typ": null,
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"source_page": 3,
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},
{
"name": "RESET Output Voltage Low (Push-Pull Active Low, all UM809 versions)",
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"min": null,
"typ": null,
"max": 0.3,
"conditions": "VCC≤1.0V, ISINK=50μA",
"source_page": 3,
"source": "datasheet"
},
{
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"unit": "V",
"min": -0.3,
"typ": null,
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"conditions": "",
"source_page": 2,
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},
{
"name": "RESET, RESET (Push-Pull) voltage",
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{
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"typ": null,
"max": 20,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Rate of Rise, VCC",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V/μs",
"min": null,
"typ": null,
"max": 100,
"conditions": "",
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},
{
"name": "Continuous Power Dissipation, SOT23-3",
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"unit": "mW",
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"conditions": "SOT23-3 package",
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},
{
"name": "Operating Junction Temperature",
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"conditions": "",
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},
{
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"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 2,
"source": "datasheet"
},
{
"name": "Lead Temperature (Soldering)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
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"typ": null,
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"conditions": "Soldering, 10s",
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}
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},
"variants": [],
"sections": [
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"discovery_triggers": [
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"author": {
"name": "Ray",
"email": "[email protected]"
},
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