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DF5A5.6LFU

Public Made by Adom

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Leiditech ESD And Surge Protection (TVS/ESD), SOT-353. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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DF5A5.6LFU

Leiditech · ESD And Surge Protection (TVS/ESD) · SOT-353

DF5A5.6LFU from Leiditech, in a SOT-353. 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 IO1 passive Protected line 1 of the quad ESD array, rated for 5V reverse working voltage (VRWM) and 6.1V minimum breakdown at 1mA.
2 GND power_in Common ground node of the diode array that the protection diodes of all four lines connect to.
3 IO2 passive Protected line 2 of the quad ESD array, rated for 5V reverse working voltage (VRWM) and 6.1V minimum breakdown at 1mA.
4 IO3 passive Protected line 3 of the quad ESD array, rated for 5V reverse working voltage (VRWM) and 6.1V minimum breakdown at 1mA.
5 IO4 passive Protected line 4 of the quad ESD array, rated for 5V reverse working voltage (VRWM) and 6.1V minimum breakdown at 1mA.

Key specifications

Parameter Value
Manufacturer Leiditech
Package SOT-353
Category Circuit Protection
Pins 5

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 Working Voltage VRWM 5 V 2
Breakdown Voltage VBR 6.1 6.7 7.2 V IT = 1mA 2
Reverse Leakage Current IR 1 µA VRWM = 5V 2
Clamping Voltage VC 10 15 V IPP = 1A (8 x 20 µs pulse) 2
Clamping Voltage VC 13.5 20 V IPP = 6A (8 x 20 µs pulse) 2
Junction Capacitance CJ 90 pF V = 0V, f = 1MHz 2
Peak Pulse Power (8/20µs) Ppp 150 W 8/20µs 1
ESD per IEC 61000-4-2 (Air) VESD -30 30 Kv IEC 61000-4-2 air discharge 1
ESD per IEC 61000-4-2 (Contact) -25 25 Kv IEC 61000-4-2 contact discharge 1
Operating Temperature Range TJ -40 125 ℃ 1
Storage Temperature Range TSTJ -40 125 ℃ 1

CAD (KiCad official)

  • Symbol: DF5A5.6LFU
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SOT-353 (KiCad packages3D, STEP)
  • 3D model files: df5a5-6lfu-etched.step / df5a5-6lfu-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); df5a5-6lfu.step / df5a5-6lfu.glb are the bare package body.

Provenance

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

  • Datasheet: Leiditech datasheet (4 pp, sha256 a22493077e0736a7, retrieved 2026-10-17, 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