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STTH108A

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STMicroelectronics Fast Recovery/High Efficiency Diode, DO-214AC. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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STTH108A

STMicroelectronics · Fast Recovery/High Efficiency Diode · DO-214AC

STTH108A from STMicroelectronics, in a DO-214AC. 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, marked by the band on the package; the device blocks up to VRRM = 800 V repetitive peak reverse voltage.
2 A passive Anode; the device carries IF(AV) = 1 A average forward current (SMA, TL = 110 °C, δ = 0.5) with VF max 1.25 V at 125 °C.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package DO-214AC
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 800 V 2
Voltage rms V(RMS) 560 V 2
Average forward current (SMA) IF(AV) 1 A SMA TL = 110 °C δ = 0.5 2
Forward surge current (SMA) IFSM 20 A t = 8.3 ms, SMA 2
Storage temperature range Tstg -50 175 °C 2
Maximum operating junction temperature Tj 175 °C 2
Thermal resistance junction to lead (SMA) Rth(j-l) 30 °C/W SMA 2
Reverse leakage current IR 5 µA Tj = 25 °C, VR = 800 V 2
Reverse leakage current IR 1 50 µA Tj = 125 °C, VR = 800 V 2
Forward voltage drop VF 1.65 V Tj = 25 °C, IF = 1 A 2
Forward voltage drop VF 0.89 1.25 V Tj = 125 °C, IF = 1 A 2
Reverse recovery time trr 75 ns Tj = 25 °C, IF = 0.5 A, Irr = 0.25 A, IR = 1 A 2
Forward recovery time tfr 200 ns Tj = 25 °C, IF = 1 A, dIF/dt = 50 A/ms, VFR = 1.1 x VFmax 2
Forward recovery voltage VFP 12 V Tj = 25 °C, IF = 1 A, dIF/dt = 50 A/ms 2

CAD (KiCad official)

  • Symbol: STTH108A
  • Footprint: Diode_SMD:D_SMA
  • 3D model: DO-214AC (KiCad packages3D, STEP)
  • 3D model files: stth108a-etched.step / stth108a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stth108a.step / stth108a.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (6 pp, sha256 15e8c0aa2d47e643, retrieved 2026-10-22, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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