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Contents

README

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T1635T-8I

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

T1635T-8I from STMicroelectronics, in a TO-220. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 G input Gate trigger input terminal for controlling triac conduction; gate trigger current IGT = 1.75-35 mA, gate trigger voltage VGT max = 1.3 V (VD = 12 V, RL = 30 Ω, Tj = 25°C)
2 A2 bidirectional Anode 2 main current terminal; on-state rms current IT(RMS) = 16 A at Tc = 108°C (full sine wave), repetitive peak off-state voltage VDRM/VRRM = 800 V at Tj = 125°C
3 A1 bidirectional Anode 1 main current terminal; on-state rms current IT(RMS) = 16 A at Tc = 108°C (full sine wave), repetitive peak off-state voltage VDRM/VRRM = 800 V at Tj = 125°C

Key specifications

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

CAD (KiCad official)

  • Symbol: T1635T-8I
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: t1635t-8i-etched.step / t1635t-8i-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); t1635t-8i.step / t1635t-8i.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (10 pp, sha256 a291c9c4acc6bbeb, retrieved 2026-09-23, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-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