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MMUN2133

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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MMUN2133

CBI · Digital Transistors · SOT-23

MMUN2133 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 terminal, driven through the internal input resistor R1, which is 4.7 kΩ for the MMUN2133 variant.
2 Emitter passive Common emitter terminal; the datasheet specifies the emitter-base cutoff current for the MMUN2133 at -VEB = 6 V (max 0.18 mA).
3 Collector output Collector output terminal, rated at -VCEO 50 V and -IC 100 mA maximum, with the internal bias resistor R2 at 47 kΩ for the MMUN2133.

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 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 0.18 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 = 1 mA 2
Output Voltage (on) -VOL 0.2 V at -VCC = 5 V, -VB = 2.5 V, RL = 1 KΩ 3
Input Resistor R1 3.3 6.1 KΩ 3
Resistor Ratio R1/R2 0.055 0.185 MMUN2133 3
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
Resistor R1 (nominal) R1 4.7 KΩ nominal, Resistor Values table 1
Resistor R2 (nominal) R2 47 KΩ nominal, Resistor Values table 1

CAD (KiCad official)

  • Symbol: MMUN2133
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmun2133-etched.step / mmun2133-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmun2133.step / mmun2133.glb are the bare package body.

Provenance

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

  • Datasheet: CBI datasheet (4 pp, sha256 f93693c975628bee, 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