component
KTC3198-TA
Public Made by Adomby adom
Changjing Bipolar (BJT), TO-92. 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
markdownKTC3198-TA
Changjing · Bipolar (BJT) · TO-92
KTC3198-TA from Changjing, in a TO-92. 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 | NPN emitter terminal; the datasheet gives emitter-base breakdown V(BR)EBO of 5 V minimum and an emitter-base voltage rating of 5 V. |
| 2 | COLLECTOR | passive | NPN collector terminal; rated for 50 V collector-emitter voltage, 60 V collector-base voltage, 0.15 A continuous collector current, and 625 mW collector power dissipation. |
| 3 | BASE | passive | NPN base terminal; the datasheet's saturation test uses IB = 10 mA at IC = 100 mA, with VBE(sat) of 1 V maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | TO-92 |
| 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-base breakdown voltage | V(BR)CBO | 60 | V | IC= 0.1mA, IE=0 | 2 | ||
| Collector-emitter breakdown voltage | V(BR)CEO | 50 | V | IC=5mA, IB=0 | 2 | ||
| Emitter-base breakdown voltage | V(BR)EBO | 5 | V | IE=0.1mA, IC=0 | 2 | ||
| Collector cut-off current | ICBO | 0.1 | A | VCB=60V, IE=0 | 2 | ||
| Emitter cut-off current | IEBO | 0.1 | A | VEB=5V, IC=0 | 2 | ||
| DC current gain hFE(1) | hFE(1) | 70 | 700 | VCE=6V, IC=2mA | 2 | ||
| DC current gain hFE(2) | hFE(2) | 25 | VCE=6V, IC=150mA | 2 | |||
| Collector-emitter saturation voltage | VCE(sat) | 0.25 | V | IC=100mA, IB=10mA | 2 | ||
| Base-emitter saturation voltage | VBE(sat) | 1 | V | IC=100mA, IB=10mA | 2 | ||
| Transition frequency | fT | 80 | MHz | VCE=10V, IC=1mA | 2 | ||
| Collector output capacitance | Cob | 3.5 | pF | VCB=10V, IE=0, f=1MHz | 2 | ||
| Collector-base voltage | 60 | V | 1 | ||||
| Collector-emitter voltage | 50 | V | 1 | ||||
| Emitter-base voltage | 5 | V | 1 | ||||
| Collector current, continuous | 0.15 | A | 1 | ||||
| Collector power dissipation | 625 | mW | 1 | ||||
| Operation junction and storage temperature range | TJ, Tstg | -55 | 1 | ||||
| Thermal resistance from junction to ambient | 200 | /W | 1 |
CAD (KiCad official)
- Symbol:
KTC3198-TA - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files:
ktc3198-ta-etched.step/ktc3198-ta-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ktc3198-ta.step/ktc3198-ta.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (5 pp, sha256
1ee2521aa48af614, retrieved 2026-10-18, 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).