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SP721APP

Public Made by Adom

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Littelfuse Electrostatic And Surge Protection (TVS/ESD), PDIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 11d ago
viewers sp721app: viewers · Ray 11d ago
package.json Publish 0.1.0 · Ray 11d ago
page.json Set visibility: public · Ray 11d ago
README.md Publish 0.1.0 · Ray 11d ago
sp721app-etched.glb Publish 0.1.0 · Ray 11d ago
sp721app-etched.step sp721app: factory component page (tier=lcsc) · Ray 11d ago
sp721app-hero.glb sp721app: hero GLB from the etched model (keeps the MPN mark) · Ray 11d ago
sp721app-hero.overlay.json Publish 0.1.0 · Ray 11d ago
sp721app.glb Publish 0.1.0 · Ray 11d ago
sp721app.kicad_mod Publish 0.1.0 · Ray 11d ago
sp721app.kicad_sym Publish 0.1.0 · Ray 11d ago
sp721app.lbr Publish 0.1.0 · Ray 11d ago
sp721app.step Publish 0.1.0 · Ray 11d ago

SP721APP

Littelfuse · Electrostatic And Surge Protection (TVS/ESD) · PDIP-8

SP721APP from Littelfuse, in a PDIP-8. 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 IN input Signal input protected by SCR/diode structures that clamp to V+ when the input exceeds one VBE above V+ and to V- when it falls one VBE below V-.
2 IN input Signal input protected by SCR/diode structures that clamp to V+ when the input exceeds one VBE above V+ and to V- when it falls one VBE below V-.
3 IN input Signal input protected by SCR/diode structures that clamp to V+ when the input exceeds one VBE above V+ and to V- when it falls one VBE below V-.
4 V- power_in Negative supply pin that sets the lower SCR trigger threshold, one VBE diode drop below V-; operating supply range (V+)-(V-) is 2 to 30 V.
5 IN input Signal input protected by SCR/diode structures that clamp to V+ when the input exceeds one VBE above V+ and to V- when it falls one VBE below V-.
6 IN input Signal input protected by SCR/diode structures that clamp to V+ when the input exceeds one VBE above V+ and to V- when it falls one VBE below V-.
7 IN input Signal input protected by SCR/diode structures that clamp to V+ when the input exceeds one VBE above V+ and to V- when it falls one VBE below V-.
8 V+ power_in Positive supply pin that sets the upper SCR trigger threshold, one VBE diode drop above V+; absolute maximum continuous supply (V+)-(V-) is +35 V.

Key specifications

Parameter Value
Manufacturer Littelfuse
Package PDIP-8
Category Circuit Protection
Pins 8

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Operating Voltage Range VSUPPLY 2 30 V VSUPPLY = [(V+) - (V-)] 2
Input Leakage Current IIN -20 5 20 nA 2
Quiescent Supply Current IQUIESCENT 50 200 nA 2
Continuous Supply Voltage, (V+) - (V-) 35 V 2
Forward Peak Current, IIN to VCC, IIN to GND -2 2 A 100µs; IIN to VCC, IIN to GND (Refer to Figure 5) 2
Maximum Storage Temperature Range -65 150 °C 2
Maximum Junction Temperature (Plastic Package) 150 °C 2
Operating Temperature Range -40 105 °C Temp. Range column, ordering table for SP721APP 6
Thermal Resistance, junction to ambient (PDIP package) θJA 160 °C/W PDIP package; typical, Note 1 (measured on evaluation PC board in free air) 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts Copper Alloy tin Lead Plating Matte Tin Lead Material Copper Alloy 6

CAD (KiCad official)

  • Symbol: SP721APP
  • Footprint: Package_DIP:DIP-8_W7.62mm
  • 3D model: PDIP-8 (KiCad packages3D, STEP)
  • 3D model files: sp721app-etched.step / sp721app-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sp721app.step / sp721app.glb are the bare package body.

Provenance

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

  • Datasheet: Littelfuse datasheet (6 pp, sha256 eb5e983ff1c51866, retrieved 2026-10-29, 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