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MMUN2233

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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MMUN2233

CBI · Digital Transistors · SOT-23

MMUN2233 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 Input terminal of the built-in bias network; for MMUN2233 the input resistor R1 is 4.7 kΩ nominal (3.3 to 6.1 kΩ range), with R2 of 47 kΩ between base and emitter.
2 Emitter passive Common terminal of the transistor, referenced by the 50 V VCEO and 100 mA IC absolute maximum ratings.
3 Collector output Output terminal; absolute maximum ratings are VCBO 50 V, VCEO 50 V, IC 100 mA, with total power dissipation Ptot of 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 80 Ta = 25 °C, VCE = 10 V, IC = 5 mA 2
Collector Base Breakdown Voltage V(BR)CBO 50 V Ta = 25 °C, IC = 10 µA 2
Collector Emitter Breakdown Voltage V(BR)CEO 50 V Ta = 25 °C, IC = 2 mA 2
Collector Base Cutoff Current ICBO 100 nA Ta = 25 °C, VCB = 50 V 2
Collector Emitter Cutoff Current ICEO 500 nA Ta = 25 °C, VCE = 50 V 2
Emitter Base Cutoff Current IEBO 0.18 mA Ta = 25 °C, VEB = 6 V 2
Collector Emitter Saturation Voltage VCEsat 0.25 V Ta = 25 °C, IC = 10 mA, IB = 1 mA 2
Output Voltage (on) VOL 0.2 V Ta = 25 °C, VCC = 5 V, VB = 2.5 V, RL = 1 KΩ 3
Output Voltage (off) VOH 4.9 V Ta = 25 °C, VCC = 5 V, VB = 0.25 V, RL = 1 KΩ 3
Input Resistor R1 3.3 6.1 KΩ 3
Resistor Ratio (MMUN2233) R1/R2 0.055 0.185 3
Absolute Maximum Collector Base Voltage VCBO 50 V Ta = 25 °C 1
Absolute Maximum Collector Emitter Voltage VCEO 50 V Ta = 25 °C 1
Absolute Maximum Collector Current IC 100 mA Ta = 25 °C 1
Absolute Maximum Total Power Dissipation Ptot 200 mW Ta = 25 °C 1
Absolute Maximum Junction Temperature Tj 150 °C Ta = 25 °C 1
Storage Temperature Range TS -55 150 °C Ta = 25 °C 1
Input Resistor R1 (nominal) R1 4.7 KΩ nominal value for MMUN2233 from part table 1
Resistor R2 (nominal) R2 47 KΩ nominal value for MMUN2233 from part table 1

CAD (KiCad official)

  • Symbol: MMUN2233
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmun2233-etched.step / mmun2233-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmun2233.step / mmun2233.glb are the bare package body.

Provenance

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

  • Datasheet: CBI datasheet (4 pp, sha256 c17dc38fa9db6f6f, retrieved 2026-10-17, 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