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UMA5N

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Changjing Digital Transistors, SOT-353. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

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UMA5N

Changjing · Digital Transistors · SOT-353

UMA5N 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 the first PNP digital transistor (DTA123J), connected through built-in R1 (1.54 to 2.86 kΩ) to the base, with Vi rated -12 to +5 V.
2 E passive Common emitter of both PNP digital transistors, with the built-in R2 (R2/R1 = 17 to 26) connected between base and emitter, and supply voltage rated -50 V.
3 IN2 input Input of the second PNP digital transistor (DTA123J), connected through built-in R1 (1.54 to 2.86 kΩ) to the base, with Vi rated -12 to +5 V.
4 OUT2 passive Collector output of the second transistor, rated for output current of -100 mA maximum and VCC of -50 V.
5 OUT1 passive Collector output of the first transistor, rated for output current of -100 mA maximum and VCC of -50 V.

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) -1.1 V VO=-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=-0.25 mA 1
Input cut-off current Ii -3.6 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 1.54 2.86 KΩ 1
Resistance ratio R2/R1 17 26 1
Transition frequency fT 250 MHz VO=-10V, IO=-5mA, f=100MHz 1
Supply voltage VCC -50 V 1
Output current IC(MAX) -100 mA 1
Input voltage Vi -12 5 V 1
Power dissipation PD 150 mW 1
Operating junction and storage temperature range TJ,Tstg -55 150 ℃ 1

CAD (KiCad official)

  • Symbol: UMA5N
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SOT-353 (KiCad packages3D, STEP)
  • 3D model files: uma5n-etched.step / uma5n-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); uma5n.step / uma5n.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (4 pp, sha256 8cb50ac0ce68caa6, retrieved 2026-10-22, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF