component
CT817C
Public Made by Adomby adom
CT Micro International Transistor, Photovoltaic Output Optoisolators, SOP-4-2.54mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownCT817C
CT Micro International · Transistor, Photovoltaic Output Optoisolators · SOP-4-2.54mm
CT817C 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 emitting diode; the input forward current IF is rated at 60 mA maximum, with typical VF of 1.24 V at IF=10 mA. |
| 2 | Cathode | passive | Cathode of the infrared emitting diode; the reverse voltage VR is rated at 6 V maximum. |
| 3 | Emitter | passive | Phototransistor emitter; the emitter-collector breakdown voltage BVECO is 6 V minimum. |
| 4 | Collector | passive | Phototransistor collector; BVCEO is 35 V minimum and the collector current IC is rated at 50 mA maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | CT Micro International |
| Package | SOP-4-2.54mm |
| Category | Optoisolators |
| Pins | 4 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | Copper | H = Lead frame option (H: Iron, None: Copper) | 11 |
CAD (KiCad official)
- Symbol:
CT817C - Footprint:
Package_SO:SOP-4_3.8x4.1mm_P2.54mm - 3D model: SOP-4-2.54mm (KiCad packages3D, STEP)
- 3D model files:
ct817c-etched.step/ct817c-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ct817c.step/ct817c.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: CT Micro International datasheet (17 pp, sha256
57e8e519edb066d3, retrieved 2026-10-26, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).