component
BC327-40BK
Public Made by Adomby adom
DIOTEC Bipolar (BJT), TO-92. 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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Contents
README
markdownBC327-40BK
DIOTEC · Bipolar (BJT) · TO-92
BC327-40BK from DIOTEC, in a TO-92. 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 | C | passive | Collector of the PNP transistor, rated VCEO 45 V for BC327 and 25 V for BC328, with DC collector current IC up to 800 mA and peak ICM 1 A. |
| 2 | B | input | Base of the PNP transistor, with base current IB limited to 100 mA. |
| 3 | E | passive | Emitter of the PNP transistor, rated VEBO 5 V maximum with collector open. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | DIOTEC |
| Package | TO-92 |
| 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 |
|---|---|---|---|---|---|---|---|
| DC current gain, Group -40 | hFE | 250 | 400 | 630 | VCE = 1 V, IC = 100 mA | 1 | |
| DC current gain, Group -40 | hFE | 170 | 320 | VCE = 1 V, IC = 300 mA | 1 | ||
| Collector-Emitter saturation voltage | VCEsat | 0.7 | V | IC = 500 mA, IB = 50 mA | 1 | ||
| Base-Emitter voltage | VBE | 1.2 | V | VCE = 1 V, IC = 300 mA | 2 | ||
| Collector-Emitter cutoff current (BC327) | ICES | 2 | 100 | nA | VCE = 45 V, (B-E short) | 2 | |
| Collector-Emitter cutoff current (BC327) at Tj = 125°C | ICES | 10 | µA | VCE = 45 V, Tj = 125°C, (B-E short) | 2 | ||
| Thermal resistance junction to ambient air | RthA | 200 | K/W | Valid if leads kept at ambient temperature at 2 mm from case | 2 | ||
| Collector-Emitter voltage (BC327) | VCES | 50 | V | E-B short | 1 | ||
| Collector-Emitter voltage (BC327) | VCEO | 45 | V | B open | 1 | ||
| Emitter-Base voltage | VEBO | 5 | V | C open | 1 | ||
| Power dissipation | Ptot | 625 | mW | Valid if leads kept at ambient temperature at a distance of 2 mm from case | 1 | ||
| Collector current (dc) | IC | 800 | mA | 1 | |||
| Peak collector current | ICM | 1 | A | 1 | |||
| Base current | IB | 100 | mA | 1 | |||
| Junction temperature | Tj | -55 | 150 | °C | 1 | ||
| Storage temperature | TS | -55 | 150 | °C | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | silver | affect human life or health, user shall contact in advance Diotec Semiconductor AG's Managing Board (Heitersheim, Germany) to | 3 |
CAD (KiCad official)
- Symbol:
BC327-40BK - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files:
bc327-40bk-etched.step/bc327-40bk-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bc327-40bk.step/bc327-40bk.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: DIOTEC datasheet (3 pp, sha256
2db7febdb72ac094, retrieved 2026-10-17, 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).