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LDTB123YLT1G

Public Made by Adom

by adom

LRC Digital Transistors, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LDTB123YLT1G

LRC · Digital Transistors · SOT-23

LDTB123YLT1G from LRC, 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 is the input of the built-in bias resistor network (R1 = 2.2 kΩ, R2 = 10 kΩ), with input voltage limited to −12 V to +5 V.
2 EMITTER passive Emitter of the PNP transistor, referenced to the supply rated at VCC −50 V maximum; the datasheet gives no further function for this pin.
3 COLLECTOR output Collector is the output of the stage, rated for output current IC −500 mA and package power dissipation PD 200 mW.

Key specifications

Parameter Value
Manufacturer LRC
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
Input voltage (off) VI(off) -0.3 V VCC=−5V, IO=−100µA 1
Input voltage (on) VI(on) -2 V VO=−0.3V, IO= −20mA 1
Output voltage (on) VO(on) -0.1 -0.3 V IO/II=−50mA/−2.5mA 1
Input current II -3 mA VI=−5V 1
Output current (off) IO(off) -0.5 µA VCC=−50V, VI=0V 1
Input resistance R1 R1 1.54 2.2 2.86 kΩ 1
DC current gain GI 56 VO=−5V, IO=−50mA 1
Resistance ratio R2/R1 3.6 4.5 5.5 1
Supply voltage VCC -50 V 1
Input voltage VIN -12 5 V 1
Output current IC -500 mA 1
Power dissipation PD 200 mW 1
Junction temperature Tj 150 °C 1
Storage temperature Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: LDTB123YLT1G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: ldtb123ylt1g-etched.step / ldtb123ylt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ldtb123ylt1g.step / ldtb123ylt1g.glb are the bare package body.

Provenance

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

  • Datasheet: LRC datasheet (3 pp, sha256 195b0f09f104e295, retrieved 2026-10-18, 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