# BAT854SWF

**Nexperia** · Schottky Barrier Diodes (SBD) · SOT-323-3

BAT854SWF from Nexperia, in a SOT-323-3. 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 | a1 | passive | Anode of diode 1; the datasheet gives no electrical limit for this pin itself, the ratings apply per diode (VR max 40 V, IF max 200 mA). |
| 2 | k2 | passive | Cathode of diode 2; the datasheet gives no electrical limit for this pin itself, the ratings apply per diode (VR max 40 V, IF max 200 mA). |
| 3 | k1, a2 | passive | Common node joining cathode k1 of diode 1 to anode a2 of diode 2 (series configuration); the datasheet gives no separate electrical limit for this node. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-323-3 |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Continuous reverse voltage | VR |  |  | 40 | V |  | 4 |
| Continuous forward current | IF |  |  | 200 | mA |  | 4 |
| Repetitive peak forward current | IFRM |  |  | 300 | mA | tp ≤ 1 s; δ ≤ 0.5 | 4 |
| Non-repetitive peak forward current | IFSM |  |  | 1 | A | t = 8.3 ms half sinewave; JEDEC method | 4 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 4 |
| Junction temperature | Tj |  |  | 150 | °C |  | 4 |
| Operating ambient temperature | Tamb | -65 |  | 150 | °C |  | 4 |
| Continuous forward voltage | VF |  | 200 |  | mV | IF = 0.1 mA; see Fig.6 | 4 |
| Continuous forward voltage | VF |  | 260 |  | mV | IF = 1 mA; see Fig.6 | 4 |
| Continuous forward voltage | VF |  | 340 |  | mV | IF = 10 mA; see Fig.6 | 4 |
| Continuous forward voltage | VF |  |  | 420 | mV | IF = 30 mA; see Fig.6 | 4 |
| Continuous forward voltage | VF |  |  | 550 | mV | IF = 100 mA; see Fig.6 | 4 |
| Continuous reverse current | IR |  |  | 0.5 | μA | VR = 25 V; note 1; see Fig.7 | 4 |
| Diode capacitance | Cd |  |  | 20 | pF | VR = 1 V; f = 1 MHz; see Fig.8 | 4 |
| Thermal resistance from junction to ambient | Rth j-a |  | 625 |  | K/W | note 1 (refer to SOT323 standard mounting conditions) | 4 |

## CAD (KiCad official)

- Symbol: `BAT854SWF`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323-3 (KiCad packages3D, STEP)
- 3D model files: `bat854swf-etched.step` / `bat854swf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bat854swf.step` / `bat854swf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Nexperia datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588913175064956928) (8 pp, sha256 `b5feb42e82bd653d`, retrieved 2026-10-14, 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/bat854swf-datasheet.pdf)