component
SI8621EC-B-ISR
Public Made by Adomby adom
SKYWORKS SILICON LABS Digital Isolators, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSI8621EC-B-ISR
SKYWORKS SILICON LABS · Digital Isolators · SOIC-8
SI8621EC-B-ISR from SKYWORKS SILICON LABS, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VDD1 | power_in | Side 1 power supply, 2.5-5.5 V. |
| 2 | A1 | input | Side 1 isolated digital input with Schmitt trigger. |
| 3 | A2 | input | Side 1 isolated digital input with Schmitt trigger. |
| 4 | GND1 | power_in | Side 1 ground. |
| 5 | GND2 | power_in | Side 2 ground. |
| 6 | B2 | output | Side 2 isolated digital output, default high state. |
| 7 | B1 | output | Side 2 isolated digital output, default high state. |
| 8 | VDD2 | power_in | Side 2 power supply, 2.5-5.5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SKYWORKS SILICON LABS |
| Package | SOIC-8 |
| Category | Signal Isolation Devices |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
SI8621EC-B-ISR - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
si8621ec-b-isr-etched.step/si8621ec-b-isr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);si8621ec-b-isr.step/si8621ec-b-isr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SKYWORKS SILICON LABS datasheet (39 pp, sha256
f3d0f95ee801f87b, retrieved 2026-09-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).