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BAT721S

Public Made by Adom

by adom

Nexperia Schottky Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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bat721s-hero.glb bat721s: hero GLB from the etched model (keeps the MPN mark) · Ray 9d ago
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BAT721S

Nexperia · Schottky Diodes · SOT-23

BAT721S from Nexperia, 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 A1 passive Anode of diode 1; the datasheet limits for each diode are VR 40 V and IF 200 mA.
2 K2 passive Cathode of diode 2; the datasheet limits for each diode are VR 40 V and IF 200 mA.
3 K1, A2 passive Cathode of diode 1 and anode of diode 2 share this terminal; the datasheet limits for each diode are VR 40 V and IF 200 mA.

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOT-23
Category Diodes
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 voltage VR 40 V 2
Forward current IF 200 mA 2
Non-repetitive peak forward current IFSM 1 A half sine-wave pulse; tp ≤ 8.3 ms; JEDEC method; Tj(init) = 25 °C 2
Junction temperature Tj 125 °C 2
Ambient temperature Tamb -65 150 °C 2
Storage temperature Tstg -65 150 °C 2
Thermal resistance from junction to ambient Rth(j-a) 500 K/W in free air 2
Forward voltage VF 300 mV IF = 10 mA; pulsed; tp ≤ 300 µs; δ ≤ 0.02; Tamb = 25 °C 3
Forward voltage VF 420 mV IF = 100 mA; pulsed; tp ≤ 300 µs; δ ≤ 0.02; Tamb = 25 °C 3
Forward voltage VF 550 mV IF = 200 mA; pulsed; tp ≤ 300 µs; δ ≤ 0.02; Tamb = 25 °C 3
Reverse current IR 15 µA VR = 30 V; Tamb = 25 °C 3
Reverse current IR 3 mA VR = 30 V; Tj = 100 °C 3
Diode capacitance Cd 40 50 pF VR = 0 V; f = 1 MHz; Tamb = 25 °C 3

CAD (KiCad official)

  • Symbol: BAT721S
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bat721s-etched.step / bat721s-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bat721s.step / bat721s.glb are the bare package body.

Provenance

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

  • Datasheet: Nexperia datasheet (8 pp, sha256 8d1735cc748c5a8e, retrieved 2026-10-18, tier: manufacturer)
  • 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