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

# 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](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884990415548416) (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](docs/sp724ahtg-datasheet.pdf)