component
CYTLP181
Public Made by Adomby adom
OCIC Transistor, Photovoltaic Output Optoisolators, SOP-4-2.54mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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CYTLP181
OCIC · Transistor, Photovoltaic Output Optoisolators · SOP-4-2.54mm
CYTLP181 from OCIC, 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 | LED anode input; forward current IF is rated 50 mA max (pulsed IFP 1 A) and reverse voltage VR is rated 5 V max. |
| 2 | Cathode | passive | LED cathode input, return for the forward current IF (50 mA max) and reverse voltage VR of 5 V max. |
| 3 | Emitter | passive | Phototransistor emitter output; emitter-collector voltage VECO is rated 7 V max. |
| 4 | Collector | passive | Phototransistor collector output; collector-emitter voltage VCEO is rated 80 V and collector current IC 50 mA max. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | OCIC |
| Package | SOP-4-2.54mm |
| Category | Optoisolators |
| Pins | 4 |
CAD (KiCad official)
- Symbol:
CYTLP181 - Footprint:
Package_SO:SOP-4_3.8x4.1mm_P2.54mm - 3D model: SOP-4-2.54mm (KiCad packages3D, STEP)
- 3D model files:
cytlp181-etched.step/cytlp181-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cytlp181.step/cytlp181.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: OCIC datasheet (8 pp, sha256
7c44245f96cc5029, retrieved 2026-10-26, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).
# CYTLP181
**OCIC** · Transistor, Photovoltaic Output Optoisolators · SOP-4-2.54mm
CYTLP181 from OCIC, 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 | LED anode input; forward current IF is rated 50 mA max (pulsed IFP 1 A) and reverse voltage VR is rated 5 V max. |
| 2 | Cathode | passive | LED cathode input, return for the forward current IF (50 mA max) and reverse voltage VR of 5 V max. |
| 3 | Emitter | passive | Phototransistor emitter output; emitter-collector voltage VECO is rated 7 V max. |
| 4 | Collector | passive | Phototransistor collector output; collector-emitter voltage VCEO is rated 80 V and collector current IC 50 mA max. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | OCIC |
| Package | SOP-4-2.54mm |
| Category | Optoisolators |
| Pins | 4 |
## CAD (KiCad official)
- Symbol: `CYTLP181`
- Footprint: `Package_SO:SOP-4_3.8x4.1mm_P2.54mm`
- 3D model: SOP-4-2.54mm (KiCad packages3D, STEP)
- 3D model files: `cytlp181-etched.step` / `cytlp181-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cytlp181.step` / `cytlp181.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [OCIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884096328077312) (8 pp, sha256 `7c44245f96cc5029`, retrieved 2026-10-26, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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](docs/cytlp181-datasheet.pdf)