component
KTC4375
Public Made by Adomby adom
Changjing Bipolar (BJT), SOT-89-3L. 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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README
markdownKTC4375
Changjing · Bipolar (BJT) · SOT-89-3L
KTC4375 from Changjing, in a SOT-89-3L. 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 transistor, with emitter-base breakdown V(BR)EBO of 5 V minimum at IE=1mA and an absolute maximum emitter-base voltage VEBO of 5 V. |
| 2 | COLLECTOR | passive | Collector terminal of the NPN transistor, rated for 1.5 A continuous collector current (IC), with collector-base voltage VCBO and collector-emitter voltage VCEO both 30 V. |
| 3 | EMITTER | passive | Emitter terminal of the NPN transistor, the reference for the base-emitter and collector-emitter ratings, with collector-emitter breakdown V(BR)CEO of 30 V minimum at IC=10mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-89-3L |
| 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-emitter voltage | VCEO | 30 | V | 1 | |||
| Collector-base voltage | VCBO | 30 | V | 1 | |||
| Emitter-base voltage | VEBO | 5 | V | 1 | |||
| Collector current, continuous | IC | 1.5 | A | 1 | |||
| Collector power dissipation | PC | 0.5 | W | 1 | |||
| Junction temperature | TJ | 150 | ℃ | 1 | |||
| Storage temperature | Tstg | -55 | 150 | ℃ | 1 | ||
| Collector-base breakdown voltage | V(BR)CBO | 30 | V | IC=1mA,IE=0 | 1 | ||
| Collector-emitter breakdown voltage | V(BR)CEO | 30 | V | IC=10mA,IB=0 | 1 | ||
| Emitter-base breakdown voltage | V(BR)EBO | 5 | V | IE=1mA,IC=0 | 1 | ||
| Collector cut-off current | ICBO | 0.1 | μA | VCB=30V,IE=0 | 1 | ||
| Emitter cut-off current | IEBO | 0.1 | μA | VEB=5V,IC=0 | 1 | ||
| DC current gain | hFE | 100 | 320 | VCE=2V,IC=0.5A | 1 | ||
| Collector-emitter saturation voltage | VCE(sat) | 2 | V | IC=1.5A,IB=30mA | 1 | ||
| Base-emitter voltage | VBE | 1 | V | VCE=2V,IC=0.5A | 1 | ||
| Transition frequency | fT | 120 | MHz | VCE=2V,IC=500mA | 1 | ||
| Collector output capacitance | Cob | 40 | pF | VCB=10V,IE=0,f=1MHz | 1 |
CAD (KiCad official)
- Symbol:
KTC4375 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3L (KiCad packages3D, STEP)
- 3D model files:
ktc4375-etched.step/ktc4375-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ktc4375.step/ktc4375.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (2 pp, sha256
c8ed6f86468602a5, 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).