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KTC3875-GR

Foshan Blue Rocket Elec · Bipolar (BJT) · SOT-23

KTC3875-GR from Foshan Blue Rocket Elec, 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 transistor; the datasheet rates base current IB at 30 mA maximum.
2 Emitter passive Emitter terminal of the NPN transistor; the datasheet rates emitter-to-base voltage VEBO at 5.0 V.
3 Collector passive Collector terminal of the NPN transistor; the datasheet rates collector current IC at 150 mA and collector-to-emitter voltage VCEO at 50 V.

Key specifications

Parameter Value
Manufacturer Foshan Blue Rocket Elec
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
Collector to Base Voltage VCBO 60 V Ta=25℃ 2
Collector to Emitter Voltage VCEO 50 V Ta=25℃ 2
Emitter to Base Voltage VEBO 5 V Ta=25℃ 2
Collector Current IC 150 mA Ta=25℃ 2
Base Current IB 30 mA Ta=25℃ 2
Collector Power Dissipation PC 150 mW Ta=25℃ 2
Junction Temperature Tj 150 ℃ Ta=25℃ 2
Storage Temperature Range Tstg -55 150 ℃ Ta=25℃ 2
Collector to Emitter Breakdown Voltage (printed label) VCBO 60 V IC=100μA IE=0 2
Collector to Base Breakdown Voltage (printed label) VCEO 50 V IC=500μA IB=0 2
Emitter to Base Breakdown Voltage VEBO 5 V IE=100μA IC=0 2
Collector Cut-Off Current ICBO 0.1 μA VCB=60V IE=0 2
Emitter Cut-Off Current IEBO 0.1 μA VEB=5.0V IC=0 2
DC Current Gain hFE 70 700 VCE=6.0V IC=2.0mA 2
DC Current Gain, GR classification range hFE 200 400 1
Collector to Emitter Saturation Voltage VCE(sat) 0.1 0.25 V IC=100mA IB=1.0mA 2
Transition Frequency fT 80 MHz VCE=10V IC=1.0mA 2
Collector output capacitance Cob 2 3.5 pF VCB=10V f=1.0MHz IE=0 2
Noise Figure NF 1 10 dB VCB=6.0V f=1KHz IC=0.1mA Rg=10KΩ 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing PC Base Current IB 30 mA Collector Power Dissipation PC 150 mW 2

CAD (KiCad official)

  • Symbol: KTC3875-GR
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: ktc3875-gr-etched.step / ktc3875-gr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ktc3875-gr.step / ktc3875-gr.glb are the bare package body.

Provenance

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

  • Datasheet: Foshan Blue Rocket Elec datasheet (6 pp, sha256 0fc50cb999333b2b, retrieved 2026-10-20, 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