# BC847BS

**FUXINSEMI** · Dual NPN transistor · SOT-363 (SC-70-6)

FUXINSEMI BC847BS: two independent BC847B NPN transistors in one SOT-363 (marking 1F). Matched thermal environment for differential pairs and current mirrors.

## Verification

A person checks each page against its datasheet and signs it off here; the badge turns amber if a checked file changes.

::adom-verified{src="/adom/bc847bs/render/verification.json"}

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | E1 | passive | Emitter, transistor 1 (datasheet p.1 diagram). |
| 2 | B1 | input | Base, transistor 1. |
| 6 | C1 | passive | Collector, transistor 1. |
| 3 | C2 | passive | Collector, transistor 2. |
| 4 | E2 | passive | Emitter, transistor 2. |
| 5 | B2 | input | Base, transistor 2. |

## Key specifications

| Parameter | Value | Source |
|---|---|---|
| Collector-emitter voltage | 45 V | Datasheet p.1 |
| Collector-base voltage | 50 V | Datasheet p.1 |
| Emitter-base voltage | 6 V | Datasheet p.1 |
| Collector current | 100 mA | Datasheet p.1 |
| Power dissipation | 200 mW | Datasheet p.1 |
| DC current gain | 200 to 450 at VCE = 5 V, IC = 2 mA | Datasheet p.1 |
| Transition frequency | 200 MHz typ | Datasheet p.1 |
| Marking | 1F | Datasheet p.1 |

## Ordering

| Distributor | Part number | Note |
|---|---|---|
| LCSC / JLCPCB | [C5380687](https://www.lcsc.com/product-detail/C5380687.html) | JLC Extended part, 49,240 in stock on 2026-10-08 |
| Mouser | not listed | no listing for this manufacturer's part (searched 2026-10-08; the same number from onsemi was not counted) |
| DigiKey | not listed | no listing for this manufacturer's part (searched 2026-10-08; the same number from Shenzhen Slkormicro Semicon Co., Ltd. was not counted) |

## CAD

| File | What it is |
|---|---|
| `bc847bs.kicad_sym` | KiCad symbol, with MPN, manufacturer and distributor numbers as properties |
| `bc847bs.kicad_mod` | KiCad footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`, KiCad official, CC-BY-SA 4.0 |
| `bc847bs.step` / `bc847bs.glb` | 3D model, Z-up, seated on z = 0: KiCad packages3D (tag 10.0.6), SOT-363_SC-70-6.step |
| `bc847bs-etched.step` / `bc847bs-etched.glb` | The same model with the part number laser-etched on top as a separate, toggleable `Adom.LaserEtch` group (a virtual identification aid, not the maker's real marking) |
| `bc847bs.lbr` | Fusion 360 / EAGLE library: one deviceset, each with its own MPN, manufacturer and LCSC / Mouser / DigiKey attributes |
| `altium/Adom_bc847bs.SchLib` / `.PcbLib` | Altium library pair (adom-lbr, no Altium needed): symbol and footprint with the 3D body, parameters carry the part numbers; `altium/*.adom-lbr.json` is the canonical hub each was built from |

## Provenance

- **Datasheet:** [docs/bc847bs-datasheet.pdf](docs/bc847bs-datasheet.pdf), sha256 `eb975eadeb413ebb`, retrieved 2026-10-08 from LCSC
- **Specs:** each row names its source: the manufacturer datasheet (with page) or the LCSC parametric listing (retrieved 2026-10-08).
- **Distributor numbers:** looked up 2026-10-08 with adom-parts-search (Mouser, DigiKey, JLCPCB), exact part number and manufacturer only.
- **CAD:** footprint `Package_TO_SOT_SMD:SOT-363_SC-70-6`; 3D: KiCad packages3D (tag 10.0.6), SOT-363_SC-70-6.step.

## Related

- Used on the [AM/FM Receiver Molecule](https://wiki.adom.inc/adom/amfm-receiver-molecule).