component
TPAZ3028-04P.RDG
Public Made by Adomby adom
TECH PUBLIC ESD And Surge Protection (TVS/ESD), SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownTPAZ3028-04P.RDG
TECH PUBLIC · ESD And Surge Protection (TVS/ESD) · SO-8
TPAZ3028-04P.RDG from TECH PUBLIC, in a SO-8. 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 of pair 1, paired with pin 8 and with the TVS diode connected to pin 2 (capacitance specified pins 1,8 to 2,7). |
| 2 | 2 | passive | Other side of the TVS diode from pin 1, tied with pin 7 for line pair 1 (VRWM 2.8V max, IPP 10A 8/20µs). |
| 3 | 3 | passive | Protected line of pair 2, paired with pin 6 and with the TVS diode connected to pin 4 (capacitance specified pins 3,6 to 4,5). |
| 4 | 4 | passive | Other side of the TVS diode from pin 3, tied with pin 5 for line pair 2 (VRWM 2.8V max, IPP 10A 8/20µs). |
| 5 | 5 | passive | Other side of the TVS diode from pin 6, tied with pin 4 for line pair 2. |
| 6 | 6 | passive | Protected line of pair 2, paired with pin 3 and with the TVS diode connected to pin 5. |
| 7 | 7 | passive | Other side of the TVS diode from pin 8, tied with pin 2 for line pair 1. |
| 8 | 8 | passive | Protected line of pair 1, paired with pin 1 and with the TVS diode connected to pin 7. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SO-8 |
| Category | Circuit Protection |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power (8/20µs) | Ppk | 100 | W | 2 | |||
| Peak Pulse Current (8/20µs) | IPP | 10 | A | 2 | |||
| ESD per IEC 61000-4-2 (Air) | VESD | -30 | 30 | kV | 2 | ||
| ESD per IEC 61000-4-2 (Contact) | VESD | -30 | 30 | kV | 2 | ||
| Storage Temperature Range | Tstg | -55 | 150 | °C | 2 | ||
| Operating Temperature Range | TJ | -40 | 125 | °C | 2 | ||
| Reverse Working Voltage | VRWM | 2.8 | V | 2 | |||
| Punch-Through Voltage | VPT | 3.5 | 3.8 | 4.3 | V | IPT = 2µA | 2 |
| Snap-Back Voltage | VSB | 2.8 | V | ISB = 50mA | 2 | ||
| Reverse Leakage Current | IR | 1 | µA | VRWM = 2.8V | 2 | ||
| Clamping Voltage | VC | 5.5 | V | IPP = 1A (8 x 20µs pulse) | 2 | ||
| Clamping Voltage | VC | 10 | V | IPP = 10A (8 x 20µs pulse) | 2 | ||
| Variation in capacitance with reverse bias | 1.3 | pF | Pins 1,8 to 2,7 and pins 3,6 to 4,5; VR = 0 to 2.8V, f = 1MHz | 2 | |||
| Junction Capacitance | CJ | 4.7 | 6 | pF | Pins 1,8 to 2,7 and pins 3,6 to 4,5; VR = 2.8V, f = 1MHz | 2 |
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 |
|---|---|---|---|---|
| contacts | tin | Lead Finish: Matte Tin Case Material: “Green” Molding Compound. | 1 |
CAD (KiCad official)
- Symbol:
TPAZ3028-04P.RDG - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files:
tpaz3028-04p-rdg-etched.step/tpaz3028-04p-rdg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tpaz3028-04p-rdg.step/tpaz3028-04p-rdg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TECH PUBLIC datasheet (4 pp, sha256
b48d209fbe56bda6, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).