# BAW56WTQ

**Yangzhou Yangjie Elec Tech** · Switching Diodes · SOT-323

BAW56WTQ from Yangzhou Yangjie Elec Tech, in a SOT-323. 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 | K1 | passive | Cathode of diode 1 in the dual common-anode BAW56WTQ, with 100V reverse breakdown and 150mA average forward current (single diode loaded). |
| 2 | K2 | passive | Cathode of diode 2 in the dual common-anode BAW56WTQ, with 100V reverse breakdown and 150mA average forward current (single diode loaded). |
| 3 | A | passive | Common anode of both diodes in the BAW56WTQ, shared by pins 1 and 2. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SOT-323 |
| 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 |
|---|---|---|---|---|---|---|---|
| Forward Voltage | VF |  |  | 0.715 | V | IF=1mA | 2 |
| Forward Voltage | VF |  |  | 0.855 | V | IF=10mA | 2 |
| Forward Voltage | VF |  |  | 1 | V | IF=50mA | 2 |
| Forward Voltage | VF |  |  | 1.25 | V | IF=150mA | 2 |
| Reverse Current | IR |  |  | 1 | μA | VR=75V | 2 |
| Reverse Breakdown Voltage | VBR | 100 |  |  | V | IR=100μA | 2 |
| Diode Capacitance | Cj |  |  | 2 | pF | VR=VF=0V, f =1MHZ | 2 |
| Reverse Recovery Time | trr |  |  | 4 | ns | IF=10mA, Irr=0.1IR, RL=100Ω | 2 |
| Reverse Breakdown Voltage | VBR |  |  | 100 | V |  | 1 |
| Average Forward Current | IFAV |  |  | 150 | mA | Single diode loaded | 1 |
| Non-Repetitive Peak Forward Surge Current | IFSM |  |  | 1 | A | tp=1 ms | 1 |
| Power Dissipation | Ptot |  |  | 200 | mW | Footnotes (1) single diode loaded; (2) device mounted on FR4 PCB (1.0 x 1.0 x 0.06 inch), single-sided copper, tin-plated, standard footprint | 1 |
| Maximum Junction Temperature | Tj | -55 |  | 150 | ℃ |  | 1 |
| Storage Temperature Range | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction to Ambient | RthJA |  |  | 625 | ℃/W | Device mounted on FR4 PCB (1.0 x 1.0 x 0.06 inch), single-sided copper, tin-plated, standard footprint | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing |  | black | 4. Body color: Black | 4 |
| contacts |  | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |

## CAD (KiCad official)

- Symbol: `BAW56WTQ`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `baw56wtq-etched.step` / `baw56wtq-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `baw56wtq.step` / `baw56wtq.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603581496905117696) (5 pp, sha256 `c44198d231b66e8c`, 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/baw56wtq-datasheet.pdf)