# TPD1E04U04DPYR

**TECH PUBLIC** · Electrostatic And Surge Protection (TVS/ESD) · DFN1006-2

TPD1E04U04DPYR from TECH PUBLIC, in a DFN1006-2. 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 | Terminal 1 of the uni-directional 1-line TVS diode, measured against Pin 2 with 3.3 V maximum reverse working voltage (VRWM), 0.45 pF typical and 0.5 pF maximum junction capacitance, and ±20 kV air / ±18 kV contact ESD rating per IEC 61000-4-2. |
| 2 | 2 | passive | Terminal 2 of the uni-directional 1-line TVS diode, the return side of the protected line against Pin 1, with the same 3.3 V maximum reverse working voltage and 0.5 pF maximum capacitance (Pin 1 to Pin 2, VR = 0 V, f = 1 MHz). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | DFN1006-2 |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `TPD1E04U04DPYR`
- Footprint: `Diode_SMD:D_SOD-882`
- 3D model: DFN1006-2 (KiCad packages3D, STEP)
- 3D model files: `tpd1e04u04dpyr-etched.step` / `tpd1e04u04dpyr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpd1e04u04dpyr.step` / `tpd1e04u04dpyr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](docs/tpd1e04u04dpyr-datasheet.pdf) (4 pp, sha256 `525ce72ff2015fa1`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/tpd1e04u04dpyr-datasheet.pdf)