component

BC818-40LT1G

Public Made by Adom

by adom

onsemi Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttransistors-thyristorsbc818-40lt1gfactory-2.0.0extractor-text
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BC818-40LT1G

onsemi · Bipolar (BJT) · SOT-23

BC818-40LT1G from onsemi, 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 passive Base terminal of the NPN general-purpose transistor; the datasheet gives no separate base-drive limit, so base operation is bounded by the absolute maximum ratings (VEBO 5.0 V, continuous IC 500 mA).
2 EMITTER passive Emitter terminal of the NPN transistor; the emitter-base breakdown voltage V(BR)EBO is specified at a minimum of 5.0 V.
3 COLLECTOR passive Collector terminal of the NPN transistor; rated at VCEO 25 V, VCBO 30 V, and continuous collector current IC 500 mAdc.

Key specifications

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

CAD (KiCad official)

  • Symbol: BC818-40LT1G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bc818-40lt1g-etched.step / bc818-40lt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bc818-40lt1g.step / bc818-40lt1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (4 pp, sha256 505bc60ffe08832d, 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