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STPS1045BY-TR

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STMicroelectronics Schottky Diodes, TO-252. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

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STPS1045BY-TR

STMicroelectronics · Schottky Diodes · TO-252

STPS1045BY-TR from STMicroelectronics, in a TO-252. 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 A passive Anode lead of the Schottky rectifier; the datasheet gives IF(AV) 10 A and VRRM 45 V for the device.
2 K passive Cathode, brought out on the central position and the exposed tab (labelled K on the package drawing); the tab is the cathode connection, with Rth(j-c) of 3 °C/W.
3 A passive Second anode lead, in parallel with the other anode; IF(RMS) is 7 A per pin.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package TO-252
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
Repetitive peak reverse voltage VRRM 45 V 2
Forward rms current IF(RMS)/pin 7 A 2
Average forward current IF(AV) 10 A Tc = 150 °C, δ = 0.5 2
Surge non repetitive forward current IFSM 75 A tp = 10 ms sinusoidal 2
Repetitive peak reverse current IRRM 1 A tp = 2 µs, F = 1 kHz 2
Repetitive peak avalanche power PARM 4000 W tp = 1 µs, Tj = 25 °C 2
Storage temperature range Tstg -65 175 °C 2
Operating junction temperature range Tj -40 175 °C Footnote 1: condition to avoid thermal runaway for a diode on its own heatsink 2
Critical rate of rise of reverse voltage dV/dt 10000 V/µs 2
Junction to case thermal resistance Rth(j-c) 3 °C/W 2
Reverse leakage current IR 100 µA Tj = 25 °C, VR = VRRM; pulse tp = 5 ms, δ < 2% 2
Reverse leakage current IR 7 15 mA Tj = 125 °C, VR = VRRM; pulse tp = 5 ms, δ < 2% 2
Forward voltage drop VF 0.63 V Tj = 25 °C, IF = 10 A; pulse tp = 380 µs, δ < 2% 2
Forward voltage drop VF 0.5 0.57 V Tj = 125 °C, IF = 10 A; pulse tp = 380 µs, δ < 2% 2
Forward voltage drop VF 0.84 V Tj = 25 °C, IF = 20 A; pulse tp = 380 µs, δ < 2% 2
Forward voltage drop VF 0.65 0.72 V Tj = 125 °C, IF = 20 A; pulse tp = 380 µs, δ < 2% 2

CAD (KiCad official)

  • Symbol: STPS1045BY-TR
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252 (KiCad packages3D, STEP)
  • 3D model files: stps1045by-tr-etched.step / stps1045by-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stps1045by-tr.step / stps1045by-tr.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (7 pp, sha256 0a94ad6b61c96b42, retrieved 2026-10-21, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF