component
CYTLP521-1
Public Made by Adomby adom
OCIC Transistor, Photovoltaic Output Optoisolators, DIP-4. 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
markdownCYTLP521-1
OCIC · Transistor, Photovoltaic Output Optoisolators · DIP-4
CYTLP521-1 from OCIC, in a DIP-4. 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 of the input side; forward current IF max 50 mA, forward voltage 1.0-1.3 V at IF=10 mA. |
| 2 | Cathode | passive | LED cathode of the input side; reverse voltage VR max 6 V. |
| 3 | Emitter | passive | Phototransistor emitter of the output side; emitter-collector voltage VECO max 7 V. |
| 4 | Collector | passive | Phototransistor collector of the output side; VCEO max 80 V and collector current IC max 50 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | OCIC |
| Package | DIP-4 |
| Category | Optoisolators |
| Pins | 4 |
CAD (KiCad official)
- Symbol:
CYTLP521-1 - Footprint:
Package_DIP:DIP-4_W7.62mm - 3D model: DIP-4 (KiCad packages3D, STEP)
- 3D model files:
cytlp521-1-etched.step/cytlp521-1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cytlp521-1.step/cytlp521-1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: OCIC datasheet (9 pp, sha256
bf999cacdbf98f51, retrieved 2026-10-09, 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).