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AD-UMD2N

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Changjing Digital Transistors, SOT-363. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AD-UMD2N

Changjing · Digital Transistors · SOT-363

AD-UMD2N from Changjing, in a SOT-363. 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 E1 power_in Emitter (ground side) of the built-in-resistor NPN transistor (AD-DTC124E element), with R2 (resistance ratio R2/R1 of 0.8 to 1.2) connected between base and emitter.
2 IN1 input Input of the NPN digital transistor (AD-DTC124E) through built-in R1 of 22 kΩ typ (15.4 to 28.6 kΩ), with input voltage rated -10 to 40 V.
3 OUT2 output Collector output of the PNP digital transistor (AD-DTA124E), with output current rated -30 mA and VCC rated -50 V.
4 E2 power_in Emitter (supply side) of the built-in-resistor PNP transistor (AD-DTA124E element), with supply voltage rated -50 V.
5 IN2 input Input of the PNP digital transistor (AD-DTA124E) through built-in R1 of 22 kΩ typ (15.4 to 28.6 kΩ), with input voltage rated -40 to 10 V.
6 OUT1 output Collector output of the NPN digital transistor (AD-DTC124E), with output current rated 30 mA and VCC rated 50 V.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-363
Category Transistors/Thyristors
Pins 6

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
NPN Supply voltage VCC 50 V 2
NPN Input voltage VIN -10 40 V 2
NPN Output current IO 30 mA 2
NPN Peak collector current IC(MAX) 100 mA 2
Maximum power dissipation (NPN table) PD 150 mW 2
Operating junction and storage temperature range (NPN table) Tj, Tstg -55 150 °C 2
NPN Input voltage VI(off) VI(off) 0.5 V VCC = 5V, IO = 100µA 2
NPN Input voltage VI(on) VI(on) 3 V VO = 0.2V, IO = 5mA 2
NPN Output voltage VO(on) 0.1 0.3 V IO/II = 10mA/0.5mA 2
NPN Input current II 0.36 mA VI = 5V 2
NPN Output current (off) IO(off) 0.5 µA VCC = 50V, VI = 0V 2
NPN DC current gain GI 56 - VO = 5V, IO = 5mA 2
NPN Input resistance R1 15.4 22 28.6 kΩ 2
NPN Resistance ratio R2 /R1 0.8 1 1.2 - 2
Supply voltage (PNP table) VCC -50 V 2
Input voltage (PNP table) VIN -40 10 V 2
Output current (PNP table) IO -30 mA 2
Peak collector current (PNP table) IC(MAX) -100 mA 2
Maximum power dissipation (PNP table) PD 150 mW 2
Operating junction and storage temperature range (PNP table) Tj, Tstg -55 150 °C 2
PNP Input voltage VI(off) VI(off) -0.5 V VCC = -5V, IO = -100µA 2
PNP Input voltage VI(on) VI(on) -3 V VO = -0.3V, IO = -5mA 2
PNP Output voltage VO(on) -0.3 V IO/II = -10mA/-0.5mA 2
PNP Input current II -0.36 mA VI = -5V 2
PNP Output current (off) IO(off) -0.5 µA VCC = -50V, VI = 0V 2
PNP DC current gain GI 56 - VO = -5V, IO = -5mA 2
PNP Input resistance R1 15.4 22 28.6 kΩ 2
PNP Resistance ratio R2 /R1 0.8 1 1.2 - 2

CAD (KiCad official)

  • Symbol: AD-UMD2N
  • Footprint: Package_TO_SOT_SMD:SOT-363_SC-70-6
  • 3D model: SOT-363 (KiCad packages3D, STEP)
  • 3D model files: ad-umd2n-etched.step / ad-umd2n-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ad-umd2n.step / ad-umd2n.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (7 pp, sha256 63d2a9c97ab27d68, retrieved 2026-10-17, 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