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CTM3053

CT Micro International · Triac, SCR Output Optoisolators · SOP-4-2.54mm

CTM3053 from CT Micro International, in a SOP-4-2.54mm. 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 Anode passive Anode of the GaAs infrared LED input; forward current max 60 mA, VF max 1.5 V at IF=10mA, reverse voltage max 6 V.
2 Cathode passive Cathode of the GaAs infrared LED input; for the CTM3053 the input trigger current IFT is max 5 mA.
3 MT2 passive Main terminal 2 of the random-phase phototriac output; off-state voltage rated 600 V.
4 MT1 passive Main terminal 1 of the random-phase phototriac output; peak repetitive surge current 1 A.

Key specifications

Parameter Value
Manufacturer CT Micro International
Package SOP-4-2.54mm
Category Optoisolators
Pins 4

CAD (KiCad official)

  • Symbol: CTM3053
  • Footprint: Package_SO:SOP-4_3.8x4.1mm_P2.54mm
  • 3D model: SOP-4-2.54mm (KiCad packages3D, STEP)
  • 3D model files: ctm3053-etched.step / ctm3053-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ctm3053.step / ctm3053.glb are the bare package body.

Provenance

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

  • Datasheet: CT Micro International datasheet (10 pp, sha256 77b5d8a927d73a64, retrieved 2026-10-13, 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