# BAT64-05

**Changjing** · Schottky Diodes · SOT-23

BAT64-05 from Changjing, in a SOT-23. 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 the first Schottky diode (BAT64-05 dual common-cathode configuration), VR 40 V, IF 0.25 A. |
| 2 | A2 | passive | Anode of the second Schottky diode (BAT64-05 dual common-cathode configuration), VR 40 V, IF 0.25 A. |
| 3 | K | passive | Common cathode of both Schottky diodes in the BAT64-05 (top pin of the SOT-23), VR 40 V, IF 0.25 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23 |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse breakdown voltage | VR | 40 |  |  | V | IR=10μA | 1 |
| Forward voltage | VF |  |  | 350 | mV | IF=1mA | 1 |
| Forward voltage | VF |  |  | 430 | mV | IF=10mA | 1 |
| Forward voltage | VF |  |  | 520 | mV | IF=30mA | 1 |
| Forward voltage | VF |  |  | 750 | mV | IF=100mA | 1 |
| Reverse current | IR |  |  | 2 | μA | VR=25V | 1 |
| Capacitance between terminals | CT |  |  | 6 | pF | VR=1V,f=1MHz | 1 |
| Peak reverse voltage | VRM |  |  | 40 | V |  | 1 |
| DC reverse voltage | VR |  |  | 40 | V |  | 1 |
| Non-repetitive peak forward surge current | IFSM |  |  | 0.8 | A | t=8.3ms | 1 |
| Forward current | IF |  |  | 0.25 | A |  | 1 |
| Power dissipation | PD |  |  | 250 | mW |  | 1 |
| Junction temperature | Tj |  |  | 125 | ℃ |  | 1 |
| Storage temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Thermal resistance junction-to-ambient | RΘJA |  |  | 400 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `BAT64-05`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bat64-05-etched.step` / `bat64-05-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bat64-05.step` / `bat64-05.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589834385496715264) (4 pp, sha256 `bdf7e2d64b31b6cc`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).

[Datasheet PDF](docs/bat64-05-datasheet.pdf)