component

BCW66GLT3G

Public Made by Adom

by adom

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

componenttransistorsbcw66glt3gfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

PCB Footprint

Open full view ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

Datasheet

Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Download PDF
Contents

README

markdown

BCW66GLT3G

onsemi · Bipolar Transistors - BJT · SOT-23

BCW66GLT3G 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 of the NPN transistor; VEBO max is 5.0 Vdc and VCEO is 45 Vdc.
2 EMITTER passive Emitter of the NPN transistor; emitter-base voltage rating is 5.0 Vdc maximum.
3 COLLECTOR passive Collector of the NPN transistor; VCEO 45 Vdc, VCBO 75 Vdc, continuous IC 800 mAdc and pulsed IC 1200 mAdc.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOT-23
Category Transistors
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
Collector-Emitter Voltage VCEO 45 Vdc 1
Collector-Base Voltage VCBO 75 Vdc 1
Emitter-Base Voltage VEBO 5 Vdc 1
Collector Current - Continuous IC 800 mAdc 1
Collector Current - Pulsed IC 1200 mAdc 1
Total Device Dissipation FR-5 Board PD 225 mW FR-5 board (Note 1), TA = 25°C 1
Thermal Resistance Junction-to-Ambient (FR-5) RθJA 556 °C/W FR-5 board 1
Total Device Dissipation Alumina Substrate PD 300 mW Alumina substrate (Note 2), TA = 25°C 1
Thermal Resistance Junction-to-Ambient (Alumina) RθJA 417 °C/W Alumina substrate 1
Junction and Storage Temperature TJ, Tstg -55 150 °C 1
Collector-Emitter Breakdown Voltage V(BR)CEO 45 Vdc IC = 10 mAdc, IB = 0 2
Collector-Emitter Breakdown Voltage V(BR)CES 75 Vdc IC = 10 Adc, VEB = 0 2
Emitter-Base Breakdown Voltage V(BR)EBO 5 Vdc IE = 10 Adc, IC = 0 2
Collector Cutoff Current ICES 20 nAdc VCE = 45 Vdc, IE = 0 2
Collector Cutoff Current ICES 20 Adc VCE = 45 Vdc, IE = 0, TA = 150°C 2
Emitter Cutoff Current IEBO 20 nAdc VEB = 4.0 Vdc, IC = 0 2
DC Current Gain hFE 50 IC = 100 Adc, VCE = 10 Vdc 2
DC Current Gain hFE 110 IC = 10 mAdc, VCE = 1.0 Vdc 2
DC Current Gain hFE 160 400 IC = 100 mAdc, VCE = 1.0 Vdc 2
DC Current Gain hFE 60 IC = 500 mAdc, VCE = 2.0 Vdc 2
Collector-Emitter Saturation Voltage VCE(sat) 0.7 Vdc IC = 500 mAdc, IB = 50 mAdc 2
Collector-Emitter Saturation Voltage VCE(sat) 0.3 Vdc IC = 100 mAdc, IB = 10 mAdc 2
Base-Emitter Saturation Voltage VBE(sat) 2 Vdc IC = 500 mAdc, IB = 50 mAdc 2
Current-Gain Bandwidth Product fT 100 MHz IC = 20 mAdc, VCE = 10 Vdc, f = 100 MHz 2
Output Capacitance Cobo 12 pF VCB = 10 Vdc, IE = 0, f = 1.0 MHz 2
Input Capacitance Cibo 80 pF VEB = 0.5 Vdc, IC = 0, f = 1.0 MHz 2
Noise Figure NF 10 dB VCE = 5.0 Vdc, IC = 0.2 mAdc, RS = 1.0 k, f = 1.0 kHz, BW = 200 Hz 2
Turn-On Time ton 100 ns IB1 = IB2 = 15 mAdc, IC = 150 mAdc, RL = 150 2
Turn-Off Time toff 400 ns IB1 = IB2 = 15 mAdc, IC = 150 mAdc, RL = 150 2

CAD (KiCad official)

  • Symbol: BCW66GLT3G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bcw66glt3g-etched.step / bcw66glt3g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bcw66glt3g.step / bcw66glt3g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (5 pp, sha256 4631663e1feed952, retrieved 2026-10-26, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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