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STTH8S12D

Public Made by Adom

by adom

STMicroelectronics Fast Recovery / High Efficiency Diodes, TO-220AC. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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STTH8S12D

STMicroelectronics · Fast Recovery / High Efficiency Diodes · TO-220AC

STTH8S12D from STMicroelectronics, in a TO-220AC. 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 lead, which is also connected to the metal tab; the device is rated for VRRM of 1200 V and IF(AV) of 8 A.
2 A passive Anode lead; forward current is rated at IF(AV) 8 A (Tc = 110 °C, δ = 0.5) and 25 A RMS.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package TO-220AC
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 Tj = 25 °C, unless otherwise specified 2
Forward rms current IF(RMS) 25 A Tj = 25 °C, unless otherwise specified 2
Average forward current IF(AV) 8 A δ = 0.5, Tc = 110 °C 2
Surge non repetitive forward current IFSM 70 A tp = 10 ms sinusoidal 2
Storage temperature range Tstg -65 175 °C 2
Maximum operating junction temperature Tj 175 °C 2
Junction to case thermal resistance Rth(j-c) 2.3 °C/W 2
Reverse leakage current IR 5 µA Tj = 25 °C, VR = VRRM 2
Reverse leakage current IR 20 200 µA Tj = 150 °C, VR = VRRM 2
Forward voltage drop VF 2.7 V Tj = 25 °C, IF = 8 A, pulse tp = 380 µs, δ < 2% 2
Forward voltage drop VF 1.75 2.5 V Tj = 150 °C, IF = 8 A, pulse tp = 380 µs, δ < 2% 2
Reverse recovery time trr 32 45 ns Tj = 25 °C, IF = 1 A, VR = 30 V, dIF/dt = 200 A/µs 2
Reverse recovery current IRM 11 15 A Tj = 125 °C, IF = 8 A, VR = 600 V, dIF/dt = 200 A/µs 2
Recommended torque value (mounting) 0.4 0.6 N·m Recommended torque value 5

CAD (KiCad official)

  • Symbol: STTH8S12D
  • Footprint: Package_TO_SOT_THT:TO-220-2_Vertical
  • 3D model: TO-220AC (KiCad packages3D, STEP)
  • 3D model files: stth8s12d-etched.step / stth8s12d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stth8s12d.step / stth8s12d.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (8 pp, sha256 4549f9e84d319b5f, retrieved 2026-10-15, 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