# PDT5301-T73

**UMW** · ESD And Surge Protection (TVS/ESD) · SOT-23

PDT5301-T73 from UMW, 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 | 1 | passive | Protected line terminal of the first bidirectional TVS diode, whose other side connects to common pin 3; rated stand-off voltage 12 V. |
| 2 | 2 | passive | Protected line terminal of the second bidirectional TVS diode, whose other side connects to common pin 3; rated stand-off voltage 12 V. |
| 3 | 3 | passive | Common terminal joining the two TVS diodes from pins 1 and 2 in the pinning diagram. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOT-23 |
| Category | Circuit Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Minimum breakdown voltage | V(BR) | 13.3 |  |  | V | @ 1mA | 2 |
| Maximum clamping voltage | VC |  |  | 19 | V | @IP=1A | 2 |
| Maximum clamping voltage (8/20µs) | VC |  |  | 28 | V | 8/20µs @IPP=11A | 2 |
| Maximum leakage current | ID |  |  | 1 | µA | @VWM | 2 |
| Peak pulse power | PPP |  |  | 300 | W | tp=8/20µs | 2 |
| Junction temperature | TL | -55 |  | 150 | °C |  | 2 |
| Storage temperature | TSTG | -55 |  | 150 | °C |  | 2 |
| Rated stand-off voltage | VWM |  |  | 12 | V |  | 2 |
| Typical capacitance | C |  | 90 |  | pF | @0V, 1MHz | 2 |

## CAD (KiCad official)

- Symbol: `PDT5301-T73`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `pdt5301-t73-etched.step` / `pdt5301-t73-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pdt5301-t73.step` / `pdt5301-t73.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UMW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755880426688782336) (6 pp, sha256 `54238a3656cbfaa2`, 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/pdt5301-t73-datasheet.pdf)