component
MMUN5211DW
Public Made by Adomby adom
CBI Digital Transistors, SOT-363. Pinout cross-checked by two models against the datasheet, 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
markdownMMUN5211DW
CBI · Digital Transistors · SOT-363
MMUN5211DW from CBI, in a SOT-363. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | E2 | passive | Emitter of Q2 (NPN BRT with R1 series base and R2 base-emitter resistors, R1=R2=10 kΩ for MMUN5211DW), ground side of the circuit. |
| 2 | B2 | input | Base of Q2 via the series base resistor R1 (10 kΩ nominal, 7 to 13 kΩ), with 10 kΩ R2 base-emitter resistor. |
| 3 | C1 | passive | Collector of Q1, rated for VCEO 50 Vdc, VCBO 50 Vdc and IC 100 mAdc maximum. |
| 4 | E1 | passive | Emitter of Q1 (NPN BRT with integrated R1 and R2 bias network), ground side of the circuit. |
| 5 | B1 | input | Base of Q1 via the series base resistor R1 (10 kΩ nominal, 7 to 13 kΩ), with 10 kΩ R2 base-emitter resistor. |
| 6 | C2 | passive | Collector of Q2, rated for VCEO 50 Vdc, VCBO 50 Vdc and IC 100 mAdc maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | CBI |
| Package | SOT-363 |
| Category | Transistors/Thyristors |
| Pins | 6 |
CAD (KiCad official)
- Symbol:
MMUN5211DW - Footprint:
Package_TO_SOT_SMD:SOT-363_SC-70-6 - 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files:
mmun5211dw-etched.step/mmun5211dw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmun5211dw.step/mmun5211dw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: CBI datasheet (6 pp, sha256
e1251fafaae545a6, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-5-5(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).