component
SI8661BB-B-IUR
Public Made by Adomby adom
Skyworks Solutions Digital Isolators, QSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "si8661bb-b-iur",
"version": "0.1.0",
"type": "component",
"description": "Skyworks Solutions Digital Isolators, QSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"signal isolation devices",
"si8661bb-b-iur",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"si8661bb-b-iur.kicad_sym",
"si8661bb-b-iur.kicad_mod",
"si8661bb-b-iur.glb",
"si8661bb-b-iur.step",
"si8661bb-b-iur.lbr",
"docs/hero.png",
"docs/si8661bb-b-iur-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"si8661bb-b-iur-hero.glb",
"si8661bb-b-iur-hero.overlay.json",
"si8661bb-b-iur-etched.glb"
],
"component": {
"mpn": "SI8661BB-B-IUR",
"manufacturer": "Skyworks Solutions",
"package": "QSOP-16",
"pin_count": 16,
"category": "Signal Isolation Devices",
"subcategory": "Digital Isolators",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/9db2ac442f3a4d17e06cd38bc4cfe149.pdf",
"parts": {
"symbol": "si8661bb-b-iur.kicad_sym",
"footprint": "si8661bb-b-iur.kicad_mod",
"model_3d": "si8661bb-b-iur-hero.glb",
"model_3d_plain": "si8661bb-b-iur-etched.glb",
"model_3d_step": "si8661bb-b-iur-etched.step",
"model_3d_step_plain": "si8661bb-b-iur.step",
"lbr": "si8661bb-b-iur.lbr"
},
"distributor_links": {
"lcsc": "C7010920",
"digikey": "SI8661BB-B-IUR-ND",
"mouser": "634-SI8661BB-B-IUR"
},
"distributor_check": {
"checked_at": "2026-10-31T01:59:48Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "SI8661BB-B-IUR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "634-SI8661BB-B-IUR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "VDD1",
"type": "power_in",
"description": "Side 1 power supply, operating range 2.375 to 5.5 V, with a 0.1 µF bypass capacitor to GND1 placed close to the package."
},
{
"number": "2",
"name": "A1",
"type": "input",
"description": "Side 1 digital input."
},
{
"number": "3",
"name": "A2",
"type": "input",
"description": "Side 1 digital input."
},
{
"number": "4",
"name": "A3",
"type": "input",
"description": "Side 1 digital input."
},
{
"number": "5",
"name": "A4",
"type": "input",
"description": "Side 1 digital input (A4 is an input on the Si8661)."
},
{
"number": "6",
"name": "A5",
"type": "input",
"description": "Side 1 digital input (A5 is an input on the Si8661)."
},
{
"number": "7",
"name": "A6",
"type": "output",
"description": "Side 1 digital output in the Si8661, driven from the side 2 input B6 (the pin is listed as digital input or output)."
},
{
"number": "8",
"name": "GND1",
"type": "power_in",
"description": "Side 1 ground."
},
{
"number": "9",
"name": "GND2",
"type": "power_in",
"description": "Side 2 ground."
},
{
"number": "10",
"name": "B6",
"type": "input",
"description": "Side 2 digital input in the Si8661, driving output A6 (the pin is listed as digital input or output)."
},
{
"number": "11",
"name": "B5",
"type": "output",
"description": "Side 2 digital output (B5 is an output on the Si8661)."
},
{
"number": "12",
"name": "B4",
"type": "output",
"description": "Side 2 digital output (B4 is an output on the Si8661)."
},
{
"number": "13",
"name": "B3",
"type": "output",
"description": "Side 2 digital output."
},
{
"number": "14",
"name": "B2",
"type": "output",
"description": "Side 2 digital output."
},
{
"number": "15",
"name": "B1",
"type": "output",
"description": "Side 2 digital output."
},
{
"number": "16",
"name": "VDD2",
"type": "power_in",
"description": "Side 2 power supply, operating range 2.375 to 5.5 V, with a 0.1 µF bypass capacitor to GND2 placed close to the package."
}
],
"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 pin table (Table 5.1) has a column headed 'SOIC-16 Pin#' and no separate QSOP-16 column. The dat; Table 5.1 lists A4–A6 and B4–B6 as generic digital I/O across the whole Si866x family. I set the Si8; The ordering guide lists SI8661BB-B-IU as the QSOP-16 part, and the 'R' suffix denotes tape and reel",
"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 42,
"cost_usd": 0.3638,
"at": "2026-10-31T01:59:33"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/9db2ac442f3a4d17e06cd38bc4cfe149.pdf",
"pages": 42,
"sha256": "aea8c0805c804419",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 16,
"described": 16,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "si8661bb-b-iur.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.0,
4.9,
1.42
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "14e9adcd9b6d1d5b282a866123ac59b68abf20b62a41cc9cecabd5c819d8f17d",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "si8661bb-b-iur-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
6.0,
4.9,
1.42
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "8da568c3d1597729b58e82353c82374ea046dee66a33492d1fcc258652da4b9a",
"checked": "2026-10-31",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "QSOP-16",
"source_page": 35,
"D": {
"nom_mm": 4.89,
"range_mm": [
null,
null
]
},
"E1": {
"nom_mm": 3.9,
"range_mm": [
null,
null
]
},
"E": {
"nom_mm": 6.0,
"range_mm": [
null,
null
]
},
"e": {
"nom_mm": 0.635,
"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 1.75,
"range_mm": [
null,
1.75
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "si8661bb-b-iur.step",
"verdict": "PASS",
"reasons": [
"height and body within the datasheet's package drawing"
],
"by": "factory/package_fit.py"
}
}
}
}