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ACST1035-7T

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STMicroelectronics Thyristors (SCR)/Modules, TO-220. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs acst1035-7t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers acst1035-7t: viewers · Ray 1mo ago
acst1035-7t-etched.fit.json acst1035-7t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
acst1035-7t-etched.glb acst1035-7t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
acst1035-7t-etched.step acst1035-7t: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
acst1035-7t.glb Publish 0.1.0 · Ray 1mo ago
acst1035-7t.kicad_mod Publish 0.1.0 · Ray 1mo ago
acst1035-7t.kicad_sym Publish 0.1.0 · Ray 1mo ago
acst1035-7t.lbr Publish 0.1.0 · Ray 1mo ago
acst1035-7t.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.1.0 · Ray 1mo ago
page.json acst1035-7t: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
README.md acst1035-7t: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 1mo ago

ACST1035-7T

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

ACST1035-7T 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 COM passive Common (main terminal 1, MT1) of the Triac. Reference terminal for OUT and for the gate drive. Typically tied to the low-side of the AC load or to the mains return in appliance/compressor drives.
2 OUT passive Output (main terminal 2, MT2) of the Triac; also electrically bonded to the TO-220AB heat-sink tab. Carries the switched AC load current (up to 10 A RMS, VDRM/VRRM = 700 V) and the clamped surge current during IEC 61000-4-5 events.
3 G input Gate trigger input. For the ACST1035-7, IGT ≤ 35 mA (quadrants I-II-III, VOUT = 12 V, RL = 33 Ω), VGT ≤ 1.0 V, IGM ≤ 1.6 A (tp = 20 µs). Drive via a series gate resistor from an MCU or gate driver referenced to COM.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • ACST1035-7TT
  • ACST1035-7TFP

CAD (KiCad official)

  • Symbol: ACST1035-7T
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: acst1035-7t-etched.step / acst1035-7t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); acst1035-7t.step / acst1035-7t.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (None pp, sha256 38d92a3c09844f5e, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF