component
BC817W
Public Made by Adomby adom
Nexperia Bipolar (BJT), SOT-323-3. 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
markdownBC817W
Nexperia · Bipolar (BJT) · SOT-323-3
BC817W from Nexperia, in a SOT-323-3. 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 | B | passive | Base terminal of the NPN transistor; peak base current IBM is limited to 200 mA (single pulse, tp ≤ 1 ms, Tamb = 25 °C). |
| 2 | E | passive | Emitter terminal of the NPN transistor; emitter-base voltage VEBO is limited to 5 V (open collector, Tamb = 25 °C). |
| 3 | C | passive | Collector terminal of the NPN transistor; collector current IC is limited to 500 mA and collector-emitter voltage VCEO to 45 V (open base, Tamb = 25 °C). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-323-3 |
| 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 | VCBO | 50 | V | open emitter; Tamb = 25 °C | 3 | ||
| collector-emitter voltage | VCEO | 45 | V | open base; Tamb = 25 °C | 3 | ||
| emitter-base voltage | VEBO | 5 | V | open collector; Tamb = 25 °C | 3 | ||
| collector current | IC | 500 | mA | Tamb = 25 °C | 3 | ||
| peak collector current | ICM | 1 | A | single pulse; tp ≤ 1 ms; Tamb = 25 °C | 3 | ||
| peak base current | IBM | 200 | mA | single pulse; tp ≤ 1 ms; Tamb = 25 °C | 3 | ||
| total power dissipation | Ptot | 200 | mW | Tamb ≤ 25 °C; FR4 PCB, standard footprint (notes 1, 2) | 3 | ||
| total power dissipation | Ptot | 290 | mW | FR4 PCB, mounting pad for collector 1 cm2 (note 3) | 3 | ||
| junction temperature | Tj | 150 | °C | 3 | |||
| ambient temperature | Tamb | -65 | 150 | °C | 3 | ||
| storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| thermal resistance from junction to ambient | Rth(j-a) | 625 | K/W | in free air; FR4 PCB, single-sided copper, standard footprint (note 1) | 4 | ||
| thermal resistance from junction to ambient | Rth(j-a) | 431 | K/W | FR4 PCB, mounting pad for collector 1 cm2 (note 3) | 4 | ||
| collector-base breakdown voltage | V(BR)CBO | 50 | V | IC = 100 µA; IE = 0 A; Tamb = 25 °C | 5 | ||
| collector-emitter breakdown voltage | V(BR)CEO | 45 | V | IC = 10 mA; IE = 0 A; Tamb = 25 °C | 5 | ||
| emitter-base breakdown voltage | V(BR)EBO | 5 | V | IE = 100 µA; IC = 0 A; Tamb = 25 °C | 5 | ||
| collector-base cut-off current | ICBO | 100 | nA | VCB = 20 V; IE = 0 A; Tamb = 25 °C | 5 | ||
| collector-base cut-off current | ICBO | 5 | μA | VCB = 20 V; IE = 0 A; Tj = 150 °C | 5 | ||
| emitter-base cut-off current | IEBO | 100 | nA | VEB = 5 V; IC = 0 A; Tamb = 25 °C | 5 | ||
| DC current gain (BC817W) | hFE | 100 | 600 | VCE = 1 V; IC = 100 mA; Tamb = 25 °C; pulsed; tp ≤ 300 μs; δ ≤ 0.02 | 5 | ||
| DC current gain | hFE | 40 | VCE = 1 V; IC = 500 mA; Tamb = 25 °C; pulsed; tp ≤ 300 μs; δ ≤ 0.02 | 5 | |||
| collector-emitter saturation voltage | VCEsat | 700 | mV | IC = 500 mA; IB = 50 mA; Tamb = 25 °C; pulsed; tp ≤ 300 μs; δ ≤ 0.02 | 5 | ||
| base-emitter voltage | VBE | 1.2 | V | VCE = 1 V; IC = 500 mA; Tamb = 25 °C; pulsed; tp ≤ 300 μs; δ ≤ 0.02 | 5 | ||
| transition frequency | fT | 100 | MHz | VCE = 5 V; IC = 10 mA; f = 100 MHz; Tamb = 25 °C | 5 |
CAD (KiCad official)
- Symbol:
BC817W - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323-3 (KiCad packages3D, STEP)
- 3D model files:
bc817w-etched.step/bc817w-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bc817w.step/bc817w.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (13 pp, sha256
d9aba599bcbb8819, retrieved 2026-10-16, 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).