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BAT54STA

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

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BAT54STA

Diodes Incorporated · Schottky Diodes · SOT-23

BAT54STA from Diodes Incorporated, 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 the first Schottky diode (bottom-left terminal in the top view), in series with the second diode; part rated 30 V VRRM, 200 mA IO.
2 K2 passive Cathode of the second Schottky diode (bottom-right terminal in the top view), in series with the first diode; part rated 30 V VRRM, 200 mA IO.
3 K1/A2 passive Common center node joining the cathode of the first diode and the anode of the second diode (top terminal in the top view) in the BAT54STA series configuration.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
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 Breakdown Voltage V(BR)R 30 V IRS = 100µA 2
Forward Voltage VF 240 mV IF = 0.1mA 2
Forward Voltage VF 320 mV IF = 1mA 2
Forward Voltage VF 400 mV IF = 10mA 2
Forward Voltage VF 500 mV IF = 30mA 2
Forward Voltage VF 800 mV IF = 100mA 2
Reverse Leakage Current IR 2 µA VR = 25V 2
Total Capacitance CT 10 pF VR = 1.0V, f = 1.0MHz 2
Reverse Recovery Time tRR 5 ns IF = 10mA through IR = 10mA to IR = 1.0mA, RL = 100Ω 2
Peak Repetitive Reverse Voltage / Working Peak Reverse Voltage / DC Blocking Voltage VRRM, VRWM, VR 30 V @TA = +25°C, unless otherwise specified 2
Average Rectified Output Current IO 200 mA Note 5 2
Repetitive Peak Forward Current IFRM 300 mA @TA = +25°C, unless otherwise specified 2
Non-Repetitive Forward Surge Current IFSM 600 mA t < 1.0s 2
Power Dissipation PD 200 mW Note 5 2
Typical Thermal Resistance Junction to Ambient Air RθJA 500 °C/W Note 5 2
Typical Thermal Resistance Junction to Case RθJC 180 °C/W Note 8 2
Operating and Storage Temperature Range TJ, TSTG -65 150 °C Note 6 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 tin  Terminals: Matte Tin Finish Annealed over Alloy 42 Leadframe (Lead Free Plating). Solderable per MIL-STD-202, Method 208 1

CAD (KiCad official)

  • Symbol: BAT54STA
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bat54sta-etched.step / bat54sta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bat54sta.step / bat54sta.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (5 pp, sha256 28cfafe91b59a7f2, retrieved 2026-10-18, 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