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MMUN2211

Public Made by Adom

by adom

CBI Digital Transistors, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMUN2211

CBI · Digital Transistors · SOT-23

MMUN2211 from CBI, in a SOT-23. 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 Base input Base (input) of the NPN transistor, which has a built-in input resistor R1 of 7 kΩ min to 13 kΩ max and a base-to-R2 resistor of 10 kΩ for MMUN2211, with VCBO limited to 50 V.
2 Emitter passive Emitter (common) terminal of the NPN transistor; the datasheet gives no separate emitter pin rating beyond the absolute maximum ratings of VCBO 50 V, VCEO 50 V and IC 100 mA.
3 Collector output Collector (output) of the NPN transistor, rated for VCEO 50 V, IC 100 mA maximum, and total power dissipation Ptot 200 mW.

Key specifications

Parameter Value
Manufacturer CBI
Package SOT-23
Category Transistors/Thyristors
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
DC Current Gain hFE 35 at VCE = 10 V, IC = 5 mA 2
Collector Base Cutoff Current ICBO 100 nA at VCB = 50 V 2
Collector Emitter Cutoff Current ICEO 500 nA at VCE = 50 V 2
Emitter Base Cutoff Current IEBO 0.5 mA at VEB = 6 V 2
Collector Base Breakdown Voltage V(BR)CBO 50 V at IC = 10 µA 2
Collector Emitter Breakdown Voltage V(BR)CEO 50 V at IC = 2 mA 2
Collector Emitter Saturation Voltage VCEsat 0.25 V at IC = 10 mA, IB = 0.3 mA 2
Output Voltage (on) VOL 0.2 V at VCC = 5 V, VB = 2.5 V, RL = 1 KΩ 3
Output Voltage (off) VOH 4.9 V at VCC = 5 V, VB = 0.5 V, RL = 1 KΩ 3
Input Resistor R1 7 13 KΩ MMUN2211 3
Resistor Ratio R1/R2 0.8 1.2 MMUN2211/MMUN2212/MMUN2213 3
Input Resistor nominal (Resistor Values table) R1 10 KΩ MMUN2211 nominal R1 as printed in the Resistor Values table 1
Resistor nominal (Resistor Values table) R2 10 KΩ MMUN2211 nominal R2 as printed in the Resistor Values table 1
Collector Base Voltage VCBO 50 V Ta = 25 °C 1
Collector Emitter Voltage VCEO 50 V Ta = 25 °C 1
Collector Current IC 100 mA Ta = 25 °C 1
Total Power Dissipation Ptot 200 mW Ta = 25 °C 1
Junction Temperature Tj 150 °C 1
Storage Temperature Range TS -55 150 °C 1

CAD (KiCad official)

  • Symbol: MMUN2211
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmun2211-etched.step / mmun2211-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmun2211.step / mmun2211.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: CBI datasheet (4 pp, sha256 bd452c901e7dd07f, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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