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ASH05E2U

SCME · ESD And Surge Protection (TVS/ESD) · SOT-23

ASH05E2U from SCME, in a SOT-23. 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 IO bidirectional I/O line connection (connect to IO); for ASH05E2U the working voltage VRWM is 5 V max and peak pulse power is 350 W at tp=8/20µs, and pins 1 and 2 can be used together as a bidirectional suppressor.
2 IO bidirectional I/O line connection (connect to IO); for ASH05E2U the working voltage VRWM is 5 V max, and this pin is used with pin 1 when the device is operated as a bidirectional suppressor.
3 GND power_in Ground connection (connect to GND) that serves as the common return for the TVS array.

Key specifications

Parameter Value
Manufacturer SCME
Package SOT-23
Category Circuit Protection
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Reverse stand-off voltage VRWM 5 V 3
Breakdown voltage VBR 6 V 3
Clamping voltage at 1A VCL 9 V I=1A 3
Peak pulse current IPP 15 A 3
Clamping voltage at IPP VCL 18 V I=IPP 3
Reverse leakage current IR 1 uA 3
Peak pulse power (tp=8/20us) Ppk 350 W @25°C, tp=8/20us 2
ESD (IEC61000-4-2 air discharge) VESD -30 30 kV @25°C 2
ESD (IEC61000-4-2 contact discharge) VESD -30 30 kV @25°C 2
Junction temperature TJ 125 °C 2
Operating temperature TOP -40 125 °C 2
Storage temperature TSTG -55 150 °C 2
Lead temperature TL 260 °C 2
Typical capacitance CJ 180 pF 3

CAD (KiCad official)

  • Symbol: ASH05E2U
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: ash05e2u-etched.step / ash05e2u-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ash05e2u.step / ash05e2u.glb are the bare package body.

Provenance

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

  • Datasheet: SCME datasheet (7 pp, sha256 8d9fdda5376b863f, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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