component
BCX55-10
Public Made by Adomby adom
Nexperia Bipolar Transistors - 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
markdownBCX55-10
Nexperia · Bipolar Transistors - BJT · SOT-89
BCX55-10 from Nexperia, 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 | E | passive | Emitter; the transistor's emitter terminal. |
| 2 | C | passive | Collector; rated for VCEO 60 V and IC 1 A (ICM 2 A single pulse, tp ≤ 1 ms), and connected to the exposed die pad/heatsink for heat transfer. |
| 3 | B | passive | Base; the transistor's base terminal, with IB max 0.3 A and VEBO max 5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-89 |
| Category | Transistors |
| 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 = 100 µA; IE = 0; Tamb = 25 °C | 6 | ||
| collector-emitter breakdown voltage | V(BR)CEO | 60 | V | IC = 2 µA; IB = 0 A; Tamb = 25 °C | 6 | ||
| emitter-base breakdown voltage | V(BR)EBO | 5 | V | IC = 0 A; IE = 100 µA | 6 | ||
| collector-base cut-off current | ICBO | 100 | nA | VCB = 30 V; IE = 0 A; Tamb = 25 °C | 6 | ||
| collector-base cut-off current | ICBO | 10 | µA | VCB = 30 V; IE = 0 A; Tj = 150 °C | 6 | ||
| emitter-base cut-off current | IEBO | 100 | nA | VEB = 5 V; IC = 0 A; Tamb = 25 °C | 6 | ||
| DC current gain (BCX55-10) | hFE | 63 | VCE = 2 V; IC = 5 mA; Tamb = 25 °C; pulsed | 6 | |||
| DC current gain (BCX55-10) | hFE | 63 | 160 | VCE = 2 V; IC = 150 mA; Tamb = 25 °C; pulsed | 6 | ||
| DC current gain (BCX55-10) | hFE | 40 | VCE = 2 V; IC = 500 mA; Tamb = 25 °C; pulsed | 6 | |||
| collector-emitter saturation voltage | VCEsat | 0.5 | V | IC = 500 mA; IB = 50 mA; Tamb = 25 °C; pulsed | 6 | ||
| base-emitter voltage | VBE | 1 | V | VCE = 2 V; IC = 500 mA; Tamb = 25 °C; pulsed | 6 | ||
| transition frequency | fT | 100 | 180 | MHz | VCE = 5 V; IC = 50 mA; f = 100 MHz; Tamb = 25 °C | 6 | |
| collector capacitance | Cc | 6 | pF | VCB = 10 V; IE = ie = 0 A; f = 1 MHz; Tamb = 25 °C | 6 | ||
| collector-base voltage | VCBO | 60 | V | open emitter | 3 | ||
| collector-emitter voltage | VCEO | 60 | V | open base | 3 | ||
| emitter-base voltage | VEBO | 5 | V | open collector | 3 | ||
| collector current | IC | 1 | A | 3 | |||
| peak collector current | ICM | 2 | A | single pulse; tp ≤ 1 ms | 3 | ||
| base current | IB | 0.3 | A | 3 | |||
| peak base current | IBM | 0.3 | A | single pulse; tp ≤ 1 ms | 3 | ||
| total power dissipation | Ptot | 0.5 | W | Tamb ≤ 25 °C; FR4 PCB, standard footprint | 3 | ||
| total power dissipation | Ptot | 0.95 | W | Tamb ≤ 25 °C; FR4 PCB, mounting pad for collector 1 cm2 | 3 | ||
| total power dissipation | Ptot | 1.35 | W | Tamb ≤ 25 °C; FR4 PCB, mounting pad for collector 6 cm2 | 3 | ||
| junction temperature | Tj | 150 | °C | 3 | |||
| ambient temperature | Tamb | -55 | 150 | °C | 3 | ||
| storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| thermal resistance junction to ambient | Rth(j-a) | 250 | K/W | in free air; FR4 PCB, standard footprint | 4 | ||
| thermal resistance junction to ambient | Rth(j-a) | 132 | K/W | in free air; FR4 PCB, mounting pad for collector 1 cm2 | 4 | ||
| thermal resistance junction to ambient | Rth(j-a) | 93 | K/W | in free air; FR4 PCB, mounting pad for collector 6 cm2 | 4 | ||
| thermal resistance junction to solder point | Rth(j-sp) | 16 | K/W | 4 |
CAD (KiCad official)
- Symbol:
BCX55-10 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
bcx55-10-etched.step/bcx55-10-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bcx55-10.step/bcx55-10.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (12 pp, sha256
1eeccafc6587c199, retrieved 2026-10-22, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).