component
KTC3875S-GR-RTK
Public Made by Adomby adom
KEC Semicon Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownKTC3875S-GR-RTK
KEC Semicon · Bipolar (BJT) · SOT-23
KTC3875S-GR-RTK from KEC Semicon, 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 | EMITTER | passive | Emitter terminal of the NPN transistor; the absolute maximum emitter-base voltage VEBO is 5 V and the collector current IC is limited to 150 mA. |
| 2 | BASE | passive | Base terminal of the NPN transistor; the maximum base current IB is 30 mA, and the emitter-base voltage VEBO is limited to 5 V. |
| 3 | COLLECTOR | passive | Collector terminal of the NPN transistor; the maximum collector-base voltage VCBO is 60 V, the collector-emitter voltage VCEO is 50 V, and the collector current IC is 150 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | KEC Semicon |
| 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 Cut-off Current | ICBO | 0.1 | μA | VCB=60V, IE=0 | 1 | ||
| Emitter Cut-off Current | IEBO | 0.1 | μA | VEB=5V, IC=0 | 1 | ||
| DC Current Gain (GR rank) | hFE | 200 | 400 | VCE=6V, IC=2mA; GR(G) rank per hFE classification note | 1 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | 0.1 | 0.25 | V | IC=100mA, IB=10mA | 1 | |
| Base-Emitter Saturation Voltage | VBE(sat) | 0.86 | 1 | V | IC=100mA, IB=10mA | 1 | |
| Transition Frequency | fT | 80 | MHz | VCE=10V, IC=1mA | 1 | ||
| Collector Output Capacitance | Cob | 2 | 3.5 | pF | VCB=10V, IE=0, f=1MHz | 1 | |
| Noise Figure | NF | 1 | 10 | dB | VCE=6V, IC=0.1mA, f=1kHz, Rg=10k | 1 | |
| Collector-Base Voltage | VCBO | 60 | V | Ta=25 | 1 | ||
| Collector-Emitter Voltage | VCEO | 50 | V | Ta=25 | 1 | ||
| Emitter-Base Voltage | VEBO | 5 | V | Ta=25 | 1 | ||
| Collector Current | IC | 150 | mA | Ta=25 | 1 | ||
| Base Current | IB | 30 | mA | Ta=25 | 1 | ||
| Collector Power Dissipation | PC | 150 | mW | Ta=25 | 1 | ||
| Junction Temperature | Tj | 150 | 1 | ||||
| Storage Temperature Range | Tstg | -55 | 150 | 1 |
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 | 1 |
CAD (KiCad official)
- Symbol:
KTC3875S-GR-RTK - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
ktc3875s-gr-rtk-etched.step/ktc3875s-gr-rtk-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ktc3875s-gr-rtk.step/ktc3875s-gr-rtk.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KEC Semicon datasheet (4 pp, sha256
e5ec91ea520bee04, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).