component
BCX53
Public Made by Adomby adom
TWGMC Bipolar (BJT), SOT-89. 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
markdownBCX53
TWGMC · Bipolar (BJT) · SOT-89
BCX53 from TWGMC, in a SOT-89. 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 BCX53 PNP transistor; the device is rated for VEBO -5 V and IC -1 A, with collector power dissipation of 500 mW. |
| 2 | COLLECTOR | passive | Collector terminal of the BCX53; the datasheet rates it at VCBO -100 V and VCEO -80 V, with collector current -1 A and collector power dissipation 500 mW. |
| 3 | EMITTER | passive | Emitter terminal of the BCX53; the datasheet rates it at VEBO -5 V, with collector current -1 A and collector power dissipation 500 mW. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TWGMC |
| Package | SOT-89 |
| 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 Voltage (BCX53) | VCBO | -100 | V | 1 | |||
| Collector-Emitter Voltage (BCX53) | VCEO | -80 | V | 1 | |||
| Emitter-Base Voltage | VEBO | -5 | V | 1 | |||
| Collector Current | IC | -1 | A | 1 | |||
| Collector Power Dissipation | PC | 500 | mW | 1 | |||
| Junction Temperature | Tj | 150 | ℃ | 1 | |||
| Storage Temperature | Tstg | -55 | 150 | ℃ | 1 | ||
| Thermal Resistance From Junction To Ambient | RθJA | 250 | ℃/W | 1 | |||
| Collector-base breakdown voltage (BCX53) | V(BR)CBO | -100 | V | IC=-100µA,IE=0 | 2 | ||
| Collector-emitter breakdown voltage (BCX53) | V(BR)CEO | -80 | V | IC=-10mA,IB=0 | 2 | ||
| Emitter-base breakdown voltage | V(BR)EBO | -5 | V | IE=-100µA,IC=0 | 2 | ||
| Collector cut-off current | ICBO | -0.1 | µA | VCB=-30V,IE=0 | 2 | ||
| Emitter cut-off current | IEBO | -0.1 | µA | VEB=-5V,IC=0 | 2 | ||
| DC current gain hFE(1) | hFE(1) | 63 | VCE=-2V, IC=-5mA | 2 | |||
| DC current gain hFE(2) | hFE(2) | 63 | 250 | VCE=-2V, IC=-150mA | 2 | ||
| DC current gain hFE(3) | hFE(3) | 40 | VCE=-2V, IC=-0.5A | 2 | |||
| Collector-emitter saturation voltage | VCE(sat) | -0.5 | V | IC=-0.5A,IB=-50mA | 2 | ||
| Base-emitter voltage | VBE | -1 | V | VCE=-2V, IC=-0.5A | 2 | ||
| Transition frequency | fT | 50 | MHz | VCE=-5V,IC=-10mA, f=100MHz | 2 |
CAD (KiCad official)
- Symbol:
BCX53 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
bcx53-etched.step/bcx53-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bcx53.step/bcx53.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TWGMC datasheet (3 pp, sha256
ca41e67301f82321, retrieved 2026-10-09, 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).