TPE0552R3

TECH PUBLIC · ESD And Surge Protection (TVS/ESD) · SOT-523

TPE0552R3 from TECH PUBLIC, in a SOT-523. 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	I/O1	passive	Protected line 1 of the 2-line bi-directional TVS, with reverse working voltage 5V max and breakdown 6.5V min to 8.5V max at 1mA, connected through the diode to pin 3.
2	I/O2	passive	Protected line 2 of the 2-line bi-directional TVS, with reverse working voltage 5V max and breakdown 6.5V min to 8.5V max at 1mA, connected through the diode to pin 3.
3	COMMON	passive	Common node of the two TVS diode branches (top pin in the diagram), with junction capacitance to pins 1 and 2 of 15pF typ and 20pF max at 0V, 1MHz.

Key specifications

Parameter	Value
Manufacturer	TECH PUBLIC
Package	SOT-523
Category	Circuit Protection
Pins	3

CAD (KiCad official)

Symbol: TPE0552R3
Footprint: Package_TO_SOT_SMD:SOT-523
3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
3D model files: tpe0552r3-etched.step / tpe0552r3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tpe0552r3.step / tpe0552r3.glb are the bare package body.

Provenance

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

Datasheet: TECH PUBLIC datasheet (4 pp, sha256 fdecb09e0985bf87, retrieved 2026-10-21, 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

# TPE0552R3

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · SOT-523

TPE0552R3 from TECH PUBLIC, in a SOT-523. 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 | I/O1 | passive | Protected line 1 of the 2-line bi-directional TVS, with reverse working voltage 5V max and breakdown 6.5V min to 8.5V max at 1mA, connected through the diode to pin 3. |
| 2 | I/O2 | passive | Protected line 2 of the 2-line bi-directional TVS, with reverse working voltage 5V max and breakdown 6.5V min to 8.5V max at 1mA, connected through the diode to pin 3. |
| 3 | COMMON | passive | Common node of the two TVS diode branches (top pin in the diagram), with junction capacitance to pins 1 and 2 of 15pF typ and 20pF max at 0V, 1MHz. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-523 |
| Category | Circuit Protection |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `TPE0552R3`
- Footprint: `Package_TO_SOT_SMD:SOT-523`
- 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `tpe0552r3-etched.step` / `tpe0552r3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpe0552r3.step` / `tpe0552r3.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590184490762481664) (4 pp, sha256 `fdecb09e0985bf87`, retrieved 2026-10-21, 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/tpe0552r3-datasheet.pdf)