# BC856SH6327XTSA1

**Infineon Technologies** · Bipolar (BJT) · SOT-363-6

BC856SH6327XTSA1 from Infineon Technologies, in a SOT-363-6. 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 | E1 | passive | Emitter of internal transistor TR1, with emitter-base voltage VEBO limited to 5 V. |
| 2 | B1 | passive | Base of internal transistor TR1, with peak collector current ICM limited to 200 mA (tp ≤ 10 ms). |
| 3 | C2 | passive | Collector of internal transistor TR2, with collector-emitter voltage VCEO rated at 65 V for BC856S. |
| 4 | E2 | passive | Emitter of internal transistor TR2, with emitter-base voltage VEBO limited to 5 V. |
| 5 | B2 | passive | Base of internal transistor TR2, with continuous collector current IC limited to 100 mA. |
| 6 | C1 | passive | Collector of internal transistor TR1, with collector-base voltage VCBO rated at 80 V for BC856S. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Infineon Technologies |
| Package | SOT-363-6 |
| Category | Transistors/Thyristors |
| Pins | 6 |

## 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 voltage | VCEO |  |  | 65 | V | BC856S/U | 2 |
| Collector-base voltage | VCBO |  |  | 80 | V | BC856S, BC856U | 2 |
| Emitter-base voltage | VEBO |  |  | 5 | V |  | 2 |
| Collector current | IC |  |  | 100 | mA |  | 2 |
| Peak collector current | ICM |  |  | 200 | mA | tp ≤ 10 ms | 2 |
| Total power dissipation | Ptot |  |  | 250 | mW | TS ≤ 115 °C, BC856S | 2 |
| Junction temperature | Tj |  |  | 150 | °C |  | 2 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 2 |
| Junction - soldering point thermal resistance | RthJS |  |  | 140 | K/W | BC856S, BC857S | 2 |
| Collector-emitter breakdown voltage | V(BR)CEO | 65 |  |  | V | IC = 10 mA, IB = 0, BC856S/U | 3 |
| Collector-base breakdown voltage | V(BR)CBO | 80 |  |  | V | IC = 10 µA, IE = 0, BC856S/U | 3 |
| Emitter-base breakdown voltage | V(BR)EBO | 5 |  |  | V | IE = 10 µA, IC = 0 | 3 |
| Collector-base cutoff current | ICBO |  |  | 0.015 | µA | VCB = 45 V, IE = 0 | 3 |
| Collector-base cutoff current at TA = 150 °C | ICBO |  |  | 5 | µA | VCB = 45 V, IE = 0, TA = 150 °C | 3 |
| Noise figure | F |  |  | 10 | dB | IC = 200 µA, VCE = 5 V, f = 1 kHz, Δf = 200 Hz, RS = 2 kΩ | 4 |

## CAD (KiCad official)

- Symbol: `BC856SH6327XTSA1`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363-6 (KiCad packages3D, STEP)
- 3D model files: `bc856sh6327xtsa1-etched.step` / `bc856sh6327xtsa1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bc856sh6327xtsa1.step` / `bc856sh6327xtsa1.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Infineon Technologies datasheet](docs/bc856sh6327xtsa1-datasheet.pdf) (10 pp, sha256 `d46c104708df1a58`, retrieved 2026-10-28, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/bc856sh6327xtsa1-datasheet.pdf)