component
bcw61b
Public Made by Adomby adom
Nexperia Bipolar Transistors - BJT, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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README
markdownBCW61B
Nexperia · Bipolar Transistors - BJT · SOT-23
BCW61B from Nexperia, 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 | base | passive | Base terminal of the PNP transistor; the datasheet limits peak base current IBM to −100 mA. |
| 2 | emitter | passive | Emitter terminal of the PNP transistor; the datasheet limits emitter-base voltage VEBO to −5 V. |
| 3 | collector | passive | Collector terminal of the PNP transistor; the datasheet limits collector-emitter voltage VCEO to −32 V and DC collector current IC to −100 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-23 |
| 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 voltage | VCBO | -32 | V | open emitter | 3 | ||
| collector-emitter voltage | VCEO | -32 | V | open base | 3 | ||
| emitter-base voltage | VEBO | -5 | V | open collector | 3 | ||
| collector current (DC) | IC | -100 | mA | 3 | |||
| peak collector current | ICM | -200 | mA | 3 | |||
| peak base current | IBM | -100 | mA | 3 | |||
| total power dissipation | Ptot | 250 | mW | Tamb ≤ 25 °C; note 1 | 3 | ||
| storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| junction temperature | Tj | 150 | °C | 3 | |||
| operating ambient temperature | Tamb | -65 | 150 | °C | 3 | ||
| collector cut-off current | ICBO | -20 | nA | IE = 0; VCB = −32 V | 4 | ||
| collector cut-off current | ICBO | -20 | μA | IE = 0; VCB = −32 V; Tamb = 150 °C | 4 | ||
| emitter cut-off current | IEBO | -20 | nA | IC = 0; VEB = −4 V | 4 | ||
| DC current gain | hFE | 30 | IC = −10 μA; VCE = −5 V | 4 | |||
| DC current gain | hFE | 180 | 310 | IC = −2 mA; VCE = −5 V | 4 | ||
| DC current gain | hFE | 80 | IC = −50 mA; VCE = −1 V | 4 | |||
| collector-emitter saturation voltage | VCEsat | -60 | -250 | mV | IC = −10 mA; IB = −0.25 mA | 4 | |
| collector-emitter saturation voltage | VCEsat | -120 | -550 | mV | IC = −50 mA; IB = −1.25 mA | 4 | |
| base-emitter saturation voltage | VBEsat | -600 | -850 | mV | IC = −10 mA; IB = −0.25 mA | 4 | |
| base-emitter saturation voltage | VBEsat | -0.68 | -1.05 | V | IC = −50 mA; IB = −1.25 mA | 4 | |
| base-emitter voltage | VBE | -600 | -650 | -750 | mV | IC = −2 mA; VCE = −5 V | 4 |
| transition frequency | fT | 100 | MHz | IC = −10 mA; VCE = −5 V; f = 100 MHz; note 1 | 4 | ||
| noise figure | F | 2 | 6 | dB | IC = −200 μA; VCE = −5 V; RS = 2 kΩ; f = 1 kHz; B = 200 Hz | 4 | |
| thermal resistance junction to ambient | Rth j-a | 500 | K/W | note 1 | 4 | ||
| base-emitter voltage | VBE | -550 | mV | IC = −10 μA; VCE = −5 V | 4 | ||
| base-emitter voltage | VBE | -720 | mV | IC = −50 mA; VCE = −1 V | 4 | ||
| collector capacitance | Cc | 4.5 | pF | IE = ie = 0; VCB = −10 V; f = 1 MHz | 4 | ||
| emitter capacitance | Ce | 11 | pF | IC = ic = 0; VEB = −0.5 V; f = 1 MHz | 4 |
CAD (KiCad official)
- Symbol:
BCW61B - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
bcw61b-etched.step/bcw61b-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bcw61b.step/bcw61b.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (7 pp, sha256
44f18ad0cd5d031d, retrieved 2026-10-27, tier: manufacturer) - 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).
Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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