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T1635H-8T

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STMicroelectronics Thyristors (SCR)/Modules, TO-220AB. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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T1635H-8T

STMicroelectronics · Thyristors (SCR)/Modules · TO-220AB

T1635H-8T from STMicroelectronics, in a TO-220AB. 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 Main terminal A1 of the triac, the reference terminal for gate triggering and for the A2 polarity in the dV/dt and (dl/dt)c specifications (800 V VDRM/VRRM, 16 A IT(RMS)).
2 A2 passive Main terminal A2 of the triac, connected to the metal tab, rated for 800 V repetitive peak off-state voltage and 16 A RMS on-state current at Tc = 131 °C.
3 G input Gate trigger input, with IGT of 5 mA min to 35 mA max and VGT max 1.3 V in quadrants I-II-III (VD = 12 V, RL = 30 Ω), and peak gate current IGM of 4 A for tp = 20 µs.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package TO-220AB
Category Transistors/Thyristors
Pins 3

CAD (KiCad official)

  • Symbol: T1635H-8T
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220AB (KiCad packages3D, STEP)
  • 3D model files: t1635h-8t-etched.step / t1635h-8t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); t1635h-8t.step / t1635h-8t.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (11 pp, sha256 46bfebd5e48acd03, retrieved 2026-10-11, tier: manufacturer)
  • 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