# BAT54C-G

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

BAT54C-G 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 (BAT54C common-cathode configuration), 30 V max reverse voltage and 200 mA max forward continuous current. |
| 2 | A2 | passive | Anode of the second Schottky diode (BAT54C common-cathode configuration), 30 V max reverse voltage and 200 mA max forward continuous current. |
| 3 | K | passive | Common cathode of both Schottky diodes in the BAT54C (marking KL3), 30 V max DC blocking voltage. |

## 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 voltage | V(BR) | 30 |  |  | V | IR=100μA | 1 |
| Forward voltage | VF |  |  | 0.24 | V | IF1=0.1mA | 1 |
| Forward voltage | VF |  |  | 0.32 | V | IF2=1mA | 1 |
| Forward voltage | VF |  |  | 0.4 | V | IF3=10mA | 1 |
| Forward voltage | VF |  |  | 0.5 | V | IF4=30mA | 1 |
| Forward voltage | VF |  |  | 1 | V | IF5=100mA | 1 |
| Reverse current | IR |  |  | 2 | μA | VR=25V | 1 |
| Diode capacitance | CD |  |  | 10 | pF | VR=1V,f=1MHz | 1 |
| Reverse recovery time | trr |  |  | 5 | ns | IF=IR=10mA, Irr=0.1×IR,RL=100Ω | 1 |
| Peak Repetitive Reverse Voltage | VRRM |  |  | 30 | V |  | 1 |
| Working Peak Reverse Voltage | VRWM |  |  | 30 | V |  | 1 |
| DC Blocking Voltage | VR |  |  | 30 | V |  | 1 |
| Forward Continuous Current | IFM |  |  | 200 | mA |  | 1 |
| Non-repetitive Peak Forward Surge Current | IFSM |  |  | 600 | mA | t=8.3ms | 1 |
| Repetitive Peak Forward Current | IFRM |  |  | 300 | mA | t≤1s,δ≤0.5 | 1 |
| Power Dissipation | PD |  |  | 200 | mW |  | 1 |
| Junction Temperature | Tj |  |  | 125 | ℃ |  | 1 |
| Storage Temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance from Junction to Ambient | RΘJA |  |  | 500 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `BAT54C-G`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bat54c-g-etched.step` / `bat54c-g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bat54c-g.step` / `bat54c-g.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/8586189739397959680) (4 pp, sha256 `a272dba365903a63`, retrieved 2026-10-17, 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/bat54c-g-datasheet.pdf)