# BAP64-05

**Changjing** · Diodes - General Purpose · SOT-23

BAP64-05 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 PIN diode; the BAP64-05 is a common-cathode dual, rated 175 V continuous reverse voltage and 100 mA continuous forward current. |
| 2 | A2 | passive | Anode of the second PIN diode; the BAP64-05 is a common-cathode dual, rated 175 V continuous reverse voltage and 100 mA continuous forward current. |
| 3 | K | passive | Common cathode of both PIN diodes, tied together inside the package per the BAP64-05 schematic. |

## 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 |
|---|---|---|---|---|---|---|---|
| Continuous reverse voltage | VR |  |  | 175 | V |  | 1 |
| Continuous forward current | IF |  |  | 100 | mA |  | 1 |
| Power dissipation | PD |  |  | 250 | mW | Ta=25℃ | 1 |
| Thermal resistance from junction to ambient | RθJA |  |  | 500 | ℃/W |  | 1 |
| Operation junction and storage temperature range | TJ,Tstg | -55 |  | 150 | ℃ |  | 1 |
| Forward voltage | VF |  |  | 1.1 | V | IF=50mA | 2 |
| Reverse current | IR1 |  |  | 10 | μA | VR1=175V | 2 |
| Reverse current | IR2 |  |  | 1 | μA | VR2=20V | 2 |
| Diode capacitance | Cd1 |  |  | 0.52 | pF | VR=0V, f=1MHz | 2 |
| Diode capacitance | Cd2 |  |  | 0.5 | pF | VR=1V, f=1MHz | 2 |
| Diode capacitance | Cd3 |  |  | 0.35 | pF | VR=20V, f=1MHz | 2 |
| Diode forward resistance (note 1) | Rd1 |  |  | 40 | Ω | IF=0.5mA, f=100MHz | 2 |
| Diode forward resistance (note 1) | Rd2 |  |  | 20 | Ω | IF=1mA, f=100MHz | 2 |
| Diode forward resistance (note 1) | Rd3 |  |  | 3.8 | Ω | IF=10mA, f=100MHz | 2 |
| Diode forward resistance (note 1) | Rd4 |  |  | 1.35 | Ω | IF=100mA, f=100MHz | 2 |
| Charge carrier life time | τL |  | 1.55 |  | μs | When switched from IF=10mA to IR=6mA; RL=100Ω; measured at IR=3mA | 2 |
| Series inductance | LS |  | 1.4 |  | nH | IF=10mA, f=100MHz | 2 |

## CAD (KiCad official)

- Symbol: `BAP64-05`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bap64-05-etched.step` / `bap64-05-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bap64-05.step` / `bap64-05.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/8589834528454832128) (5 pp, sha256 `0c3aba4355499037`, 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/bap64-05-datasheet.pdf)