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UMG8N

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Changjing Digital Transistors, SOT-353. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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UMG8N

Changjing · Digital Transistors · SOT-353

UMG8N from Changjing, in a SOT-353. 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 IN1 input Input of Tr1 through built-in R1 (typ 4.7kΩ) to the base, with input voltage rated -5 to +30 V.
2 GND power_in Common emitter (GND) of Tr1 and Tr2.
3 IN2 input Input of Tr2 through built-in R1 (typ 4.7kΩ) to the base, with input voltage rated -5 to +30 V.
4 OUT2 output Output (collector) of Tr2, rated 100 mA output current and 50 V supply voltage maximum.
5 OUT1 output Output (collector) of Tr1, rated 100 mA output current and 50 V supply voltage maximum.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-353
Category Transistors/Thyristors
Pins 5

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Input turn-on voltage Vi(on) 1.3 V VCC=0.3V, IO=5mA 1
Input cut-off voltage Vi(off) 0.5 V VCC=5V, IO=100µA 1
Output voltage VO(on) 0.3 V IO=5mA, Ii=0.25mA 1
Input cut-off current Ii 1.8 mA Vi =5V 1
Output cut-off current IO(off) 0.5 µA VCC=50V, Vi=0 1
DC current gain Gi 80 VO=5V, IO=10mA 1
Input resistance R1 3.29 4.7 6.11 kΩ 1
Resistance ratio R2/R1 8 10 12 1
Transition frequency fT 250 MHz VO=10V, IO=5mA, f=100MHz 1
Supply voltage VCC 50 V 1
Input voltage Vi -5 30 V 1
Output current IO 100 mA 1
Power dissipation PD 150 mW Total; 120mW per element must not be exceeded 1
Junction temperature TJ 150 ℃ 1
Storage temperature Tstg -55 150 ℃ 1

CAD (KiCad official)

  • Symbol: UMG8N
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SOT-353 (KiCad packages3D, STEP)
  • 3D model files: umg8n-etched.step / umg8n-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); umg8n.step / umg8n.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (4 pp, sha256 55ca65d38f6987f8, retrieved 2026-10-18, 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