component
BC856BW-7-F
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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Contents
README
markdownBC856BW-7-F
Diodes Incorporated · Bipolar (BJT) · SOT-323
BC856BW-7-F 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 PNP transistor; bottom-left pin in the top-view pin-out, with VEBO limited to -5.0 V. |
| 2 | E | passive | Emitter of the PNP transistor; bottom-right pin in the top-view pin-out, with peak pulse emitter current IEM of -200 mA. |
| 3 | C | passive | Collector of the PNP transistor; single top pin in the top-view pin-out, rated -100 mA continuous (-200 mA peak) and VCEO of -65 V for BC856. |
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-Base Voltage (BC856) | VCBO | -80 | V | 2 | |||
| Collector-Emitter Voltage (BC856) | VCEO | -65 | V | 2 | |||
| Emitter-Base Voltage | VEBO | -5 | V | 2 | |||
| Continuous Collector Current | IC | -100 | mA | 2 | |||
| Peak Pulse Collector Current (single pulse) | ICM | -200 | mA | single pulse | 2 | ||
| Peak Pulse Emitter Current (single pulse) | IEM | -200 | mA | single pulse | 2 | ||
| Operating and Storage Temperature Range | TJ, TSTG | -55 | 150 | °C | 2 | ||
| Power Dissipation | PD | 200 | mW | Note 5 (minimum recommended pad layout, 1oz copper, single-sided FR4, still air) | 2 | ||
| Thermal Resistance, Junction to Ambient | RϴJA | 625 | °C/W | Note 5 (minimum recommended pad layout, 1oz copper, single-sided FR4, still air) | 2 | ||
| Collector-Base Breakdown Voltage (BC856) | BVCBO | -80 | V | IC = -100µA | 3 | ||
| Collector-Emitter Breakdown Voltage (BC856) | BVCEO | -65 | V | IC = -10mA | 3 | ||
| Emitter-Base Breakdown Voltage | BVEBO | -5 | V | IE = -100µA | 3 | ||
| DC Current Gain (Group B) | hFE | 220 | 290 | 475 | VCE = -5.0V, IC = -2.0mA | 3 | |
| Collector Cutoff Current | ICBO | -15 | nA | VCB = -30V | 3 | ||
| Collector Cutoff Current | ICBO | -4 | µA | VCB = -30V, TA = +150°C | 3 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | -75 | -300 | mV | IC = -10mA, IB = -0.5mA | 3 | |
| Collector-Emitter Saturation Voltage | VCE(sat) | -250 | -650 | mV | IC = -100mA, IB = -5.0mA | 3 | |
| Base-Emitter Turn-On Voltage | VBE(on) | -600 | -650 | -750 | mV | IC = -2mA, VCE = -5V | 3 |
| Base-Emitter Turn-On Voltage | VBE(on) | -820 | mV | IC = -10mA, VCE = -5V | 3 | ||
| Base-Emitter Saturation Voltage | VBE(sat) | -700 | mV | IC = -10mA, IB = -0.5mA | 3 | ||
| Base-Emitter Saturation Voltage | VBE(sat) | -850 | -950 | mV | IC = -100mA, IB = -5mA | 3 | |
| Output Capacitance | Cobo | 3 | 4.5 | pF | VCB = -10V, f = 1.0MHz | 3 | |
| Transition Frequency | fT | 100 | 200 | MHz | VCE = -5V, IC = -10mA, f = 100MHz | 3 | |
| Noise Figure | NF | 10 | dB | VCE = -5V, IC = -200µA, RS = 2kΩ, f = 1kHz, Δf = 200Hz | 3 |
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 | tin | • Terminals: Finish, Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 | 1 |
CAD (KiCad official)
- Symbol:
BC856BW-7-F - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files:
bc856bw-7-f-etched.step/bc856bw-7-f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bc856bw-7-f.step/bc856bw-7-f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (6 pp, sha256
8524b3f1e7fd66f2, retrieved 2026-10-19, 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).