component

SESR70

Public Made by Adom

by adom

SEMIWARE ESD Protection Devices, SOT-143. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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SESR70

SEMIWARE · ESD Protection Devices · SOT-143

SESR70 from SEMIWARE, in a SOT-143. 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 VN power_in Negative supply/ground rail of the steering diode array; transient voltage on the I/O lines is steered to this pin (VRWM 70 V max per line, IPP 24 A at 8/20µs).
2 I/O 1 passive Protected line 1 (low capacitance, 5 pF typ.) connected to the steering diodes, rated for IEC 61000-4-2 ±15 kV air and ±8 kV contact.
3 I/O 2 passive Protected line 2 (low capacitance, 5 pF typ.) connected to the steering diodes, rated for IEC 61000-4-4 EFT 40 A (5/50 ns).
4 VP power_in Positive supply rail of the steering diode array; transient voltage on the I/O lines is steered to this pin (VRWM 70 V max, VBR 100 V min).

Key specifications

Parameter Value
Manufacturer SEMIWARE
Package SOT-143
Category Circuit Protection
Pins 4

CAD (KiCad official)

  • Symbol: SESR70
  • Footprint: Package_TO_SOT_SMD:SOT-143
  • 3D model: SOT-143 (KiCad packages3D, STEP)
  • 3D model files: sesr70-etched.step / sesr70-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sesr70.step / sesr70.glb are the bare package body.

Provenance

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

  • Datasheet: SEMIWARE datasheet (3 pp, sha256 e380737500a61db8, retrieved 2026-10-31, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (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