# BAS40BRW

**Changjing** · Schottky Diodes · SOT-363

BAS40BRW from Changjing, in a SOT-363. 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 in the BAS40BRW array (marking K47); each diode is rated 40 V VR and 200 mA IO. |
| 2 | A2 | passive | Anode of diode 2 in the BAS40BRW array; each diode is rated 40 V VR and 200 mA IO. |
| 3 | AC2 | passive | Shared anode/cathode node labelled AC2 in the BAS40BRW diagram; each diode is rated 40 V VR and 200 mA IO. |
| 4 | C2 | passive | Cathode of diode 2 in the BAS40BRW array; each diode has forward voltage of at most 380 mV at IF=1 mA and 1000 mV at 40 mA. |
| 5 | C1 | passive | Cathode of diode 1 in the BAS40BRW array; each diode has forward voltage of at most 380 mV at IF=1 mA and 1000 mV at 40 mA. |
| 6 | AC1 | passive | Shared anode/cathode node labelled AC1 in the BAS40BRW diagram; each diode is rated 40 V VR and 200 mA IO. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-363 |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Reverse breakdown voltage | V(BR) | 40 |  |  | V | IR= 10µA | 1 |
| Reverse voltage leakage current | IR |  |  | 200 | nA | VR=30V | 1 |
| Forward voltage | VF |  |  | 380 | mV | IF=1mA | 1 |
| Forward voltage | VF |  |  | 1000 | mV | IF=40mA | 1 |
| Total capacitance | CT |  |  | 5 | pF | VR=0,f=1MHz | 1 |
| Reverse recovery time | trr |  |  | 5 | nS | IF= IR=10mA, Irr=0.1×IR,RL=100Ω | 1 |
| Non-Repetitive Peak reverse voltage | VRM |  |  | 40 | V |  | 1 |
| DC Blocking Voltage | VR |  |  | 40 | V |  | 1 |
| Average Rectified Output Current | IO |  |  | 200 | mA |  | 1 |
| Power Dissipation | Pd |  |  | 200 | mW |  | 1 |
| Operating Junction Temperature Range | TJ | -40 |  | 125 | ℃ |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance, Junction to Ambient Air | RθJA |  |  | 500 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `BAS40BRW`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `bas40brw-etched.step` / `bas40brw-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bas40brw.step` / `bas40brw.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/8589785463990497280) (4 pp, sha256 `8b18463bfb6f7423`, retrieved 2026-10-19, 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/bas40brw-datasheet.pdf)