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Contents

README

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SP724AHTG

Littelfuse · ESD And Surge Protection (TVS/ESD) · SOT-23-6

SP724AHTG from Littelfuse, in a SOT-23-6. 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 I/O bidirectional Signal line clamp input to the SCR/diode protection array, clamping transients of either polarity to the V+ and V- rails; the datasheet rates forward peak current at ±2.2A for a 100µs single pulse and ±3A for IEC 61000-4-5 (8/20µs).
2 V- power_in Negative supply rail of the protection array; the operating voltage range is 1V to 20V between V+ and V-, and a bypass capacitor of 0.01µF or larger should be connected closely between V+ and V-.
3 I/O bidirectional Signal line clamp input to the SCR/diode protection array, clamping transients of either polarity to the V+ and V- rails; the datasheet rates forward peak current at ±2.2A for a 100µs single pulse and ±3A for IEC 61000-4-5 (8/20µs).
4 I/O bidirectional Signal line clamp input to the SCR/diode protection array, clamping transients of either polarity to the V+ and V- rails; the datasheet rates forward peak current at ±2.2A for a 100µs single pulse and ±3A for IEC 61000-4-5 (8/20µs).
5 V+ power_in Positive supply rail of the protection array; the continuous supply voltage (V+ minus V-) is absolutely limited to +20V, and a bypass capacitor of 0.01µF or larger should be connected closely between V+ and V-.
6 I/O bidirectional Signal line clamp input to the SCR/diode protection array, clamping transients of either polarity to the V+ and V- rails; the datasheet rates forward peak current at ±2.2A for a 100µs single pulse and ±3A for IEC 61000-4-5 (8/20µs).

Key specifications

Parameter Value
Manufacturer Littelfuse
Package SOT-23-6
Category Circuit Protection
Pins 6

CAD (KiCad official)

  • Symbol: SP724AHTG
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: sp724ahtg-etched.step / sp724ahtg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sp724ahtg.step / sp724ahtg.glb are the bare package body.

Provenance

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

  • Datasheet: Littelfuse datasheet (6 pp, sha256 12b1e44e05e7783b, retrieved 2026-10-09, 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