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MMUN5211DW

Public Made by Adom

by adom

CBI Digital Transistors, SOT-363. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMUN5211DW

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmun5211dw.step / mmun5211dw.glb are 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, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF