component
BC817-40W-7
Public Made by Adomby adom
Diodes Incorporated Bipolar (BJT), SOT-323. 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
markdownBC817-40W-7
Diodes Incorporated · Bipolar (BJT) · SOT-323
BC817-40W-7 from Diodes Incorporated, in a SOT-323. 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 | input | Base of the NPN transistor; drives the device, with peak base current IBM limited to 200 mA and VEBO of 5 V. |
| 2 | E | passive | Emitter of the NPN transistor; Emitter-Base voltage VEBO is limited to 5 V. |
| 3 | C | passive | Collector of the NPN transistor; VCEO 45 V, VCBO 50 V, continuous IC 500 mA, peak ICM 1.0 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-323 |
| 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-Emitter Breakdown Voltage | BVCEO | 45 | V | IC = 10mA | 2 | ||
| Emitter-Base Breakdown Voltage | BVEBO | 5 | V | IC = 100µA | 2 | ||
| Collector-Emitter Cutoff Current | ICES | 100 | nA | VCE = 45V | 2 | ||
| Collector-Emitter Cutoff Current (TJ = +150°C) | ICES | 5 | µA | VCE = 25V, TJ = +150°C | 2 | ||
| Collector-Base Cutoff Current | ICBO | 100 | nA | VCE = 20V | 2 | ||
| Collector-Base Cutoff Current (TJ = +150°C) | ICBO | 5 | µA | VCE = 20V, TJ = +150°C | 2 | ||
| Emitter-Base Cutoff Current | IEBO | 100 | nA | VEB = 5V | 2 | ||
| DC Current Gain (BC817-40W) | hFE | 250 | 600 | IC = 100mA, VCE = 1.0V | 2 | ||
| DC Current Gain (BC817-40W) | hFE | 170 | IC = 300mA, VCE = 1.0V | 2 | |||
| Collector-Emitter Saturation Voltage | VCE(SAT) | 700 | mV | IC = 500mA, IB = 50mA | 2 | ||
| Base-Emitter Voltage | VBE | 1200 | mV | IC = 300mA, VCE = 1.0V | 2 | ||
| Gain Bandwidth Product | fT | 100 | MHz | VCE = 5.0V, IC = 10mA, f = 50MHz | 2 | ||
| Collector-Base Capacitance | CCBO | 12 | pF | VCB = 10V, f = 1.0MHz | 2 | ||
| Collector-Base Voltage | VCBO | 50 | V | 2 | |||
| Collector-Emitter Voltage | VCEO | 45 | V | 2 | |||
| Emitter-Base Voltage | VEBO | 5 | V | 2 | |||
| Continuous Collector Current | IC | 500 | mA | 2 | |||
| Peak Collector Current | ICM | 1 | A | 2 | |||
| Peak Base Current | IBM | 200 | mA | 2 | |||
| Electrostatic Discharge - Human Body Model | ESD HBM | 4000 | V | JEDEC Class 3A (Note 6) | 2 | ||
| Electrostatic Discharge - Machine Model | ESD MM | 400 | V | JEDEC Class C (Note 6) | 2 | ||
| Power Dissipation | PD | 200 | mW | Note 5: minimum recommended pad layout, 1oz Cu, single-sided FR4, still air | 2 | ||
| Thermal Resistance, Junction to Ambient | RθJA | 625 | °C/W | Note 5: minimum recommended pad layout, 1oz Cu, single-sided FR4, still air | 2 | ||
| Operating and Storage Temperature Range | TJ,TSTG | -65 | 150 | °C | 2 |
CAD (KiCad official)
- Symbol:
BC817-40W-7 - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files:
bc817-40w-7-etched.step/bc817-40w-7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bc817-40w-7.step/bc817-40w-7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (5 pp, sha256
07d7e626d373c03f, retrieved 2026-10-15, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).