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Contents

README

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S-LMBT3904LT1G

LRC · Bipolar (BJT) · SOT-23

S-LMBT3904LT1G 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 terminal of the NPN general-purpose transistor; the datasheet gives no separate base-pin limit, so it is governed by the device ratings (VCEO 40 V, VCBO 60 V, VEBO 6 V, continuous IC 200 mA max).
2 EMITTER passive Emitter terminal of the NPN transistor; the emitter-base voltage VEBO is rated at 6 V maximum, and continuous collector current IC is limited to 200 mA.
3 COLLECTOR passive Collector terminal of the NPN transistor; the collector-emitter voltage VCEO is rated at 40 V and collector-base voltage VCBO at 60 V maximum, with continuous collector current limited to 200 mA.

Key specifications

Parameter Value
Manufacturer LRC
Package SOT-23
Category Transistors/Thyristors
Pins 3

CAD (KiCad official)

  • Symbol: S-LMBT3904LT1G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: s-lmbt3904lt1g-etched.step / s-lmbt3904lt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); s-lmbt3904lt1g.step / s-lmbt3904lt1g.glb are the bare package body.

Provenance

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

  • Datasheet: LRC datasheet (5 pp, sha256 129d127186ce1bbd, retrieved 2026-10-09, 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