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STTH112U

Public Made by Adom

by adom

STMicroelectronics Diodes - Fast Recovery Rectifiers, SMB. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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STTH112U

STMicroelectronics · Diodes - Fast Recovery Rectifiers · SMB

STTH112U from STMicroelectronics, in a SMB. 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 K passive Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SMB
Category Diodes
Pins 2

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 1200 V 2
Voltage rms V(RMS) 850 V 2
Average forward current IF(AV) 1 A Tl = 125°C, δ = 0.5 (SMB) 2
Forward surge current IFSM 18 A t = 8.3 ms (SMB) 2
Storage temperature range Tstg -50 175 °C 2
Maximum operating junction temperature Tj 175 °C 2
Thermal resistance junction to lead Rth (j-l) 25 °C/W L = 10 mm (SMB) 2
Reverse leakage current IR 5 µA VR = 1200 V, Tj = 25 °C 2
Reverse leakage current IR 50 µA VR = 1200 V, Tj = 125 °C 2
Forward voltage drop VF 1.9 V IF = 1 A, Tj = 25 °C 2
Forward voltage drop VF 1.17 1.65 V IF = 1 A, Tj = 125 °C 2
Forward voltage drop VF 1.1 1.55 V IF = 1 A, Tj = 150 °C 2
Reverse recovery time trr 75 ns IF = 0.5 A, Irr = 0.25 A, IR = 1 A, Tj = 25 °C 2
Forward recovery time tfr 500 ns IF = 1 A, dIF/dt = 50 A/µs, VFR = 1.1 x VFmax, Tj = 25 °C 2
Forward recovery voltage VFP 30 V 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 L =10mm leads epoxy printed circuit board FR4, copper thickness: 35µm 3

CAD (KiCad official)

  • Symbol: STTH112U
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB (KiCad packages3D, STEP)
  • 3D model files: stth112u-etched.step / stth112u-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stth112u.step / stth112u.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (8 pp, sha256 a0f63569ec40e53e, retrieved 2026-10-21, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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