component

TPAZ3028-04P.RDG

Public Made by Adom

by adom

TECH PUBLIC ESD And Surge Protection (TVS/ESD), SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TPAZ3028-04P.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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tpaz3028-04p-rdg.step / tpaz3028-04p-rdg.glb are 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, 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