EL817(C)-F 5kV Transistor Output Optocoupler 4-DIP Guide
Product Technical Guide EL817(C)-F Optocoupler GuideA structured overview of EL817(C)-F, including optical isolation characteristics, package information, pin configuration, specifications, application…
- Part No.:
- EL817(C)-F
- Manufacturer:
- Everlight Electronics Co Ltd
- Package:
- 4-DIP (0.300", 7.62mm)
- Datasheet:
- EL817(C)-F.pdf
- Description:
- LINEAR IC
- Quantity:
-
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EL817(C)-F 5kV Transistor Output Optocoupler 4-DIP Guide
A structured overview of EL817(C)-F, including optical isolation characteristics, package information, pin configuration, specifications, applications, and replacement considerations.
Product Introduction
EL817(C)-F is a single-channel transistor-output optocoupler manufactured by Everlight Electronics. It uses an optical transmission path to electrically isolate the input and output sides of a circuit.
The device is specified for 5000Vrms isolation and uses a conventional 4-DIP package, making it suitable for isolated feedback, digital interface isolation, and power-control applications.
Key Benefits
Electrical Isolation
The optical isolation barrier separates the input and output circuits to help protect low-voltage control electronics.
Transistor Output
The transistor output can interface with digital control, feedback, and switching circuits.
5kVrms Isolation
The specified isolation rating supports applications requiring strong galvanic separation between circuit domains.
Features
- Single-channel optocoupler
- Transistor output
- 5000Vrms isolation rating
- 4-pin DIP package
- Optical signal transmission
- Suitable for feedback and control isolation
- Commonly used in power supply and interface isolation circuits
Package
Package: 4-DIP
Mounting: Through Hole
Channels: 1
Output: Phototransistor
Pinout
Always verify the package orientation and exact pin assignment against the applicable Everlight datasheet.
Specifications
| Parameter | Value |
|---|---|
| Device Type | Optocoupler / Optoisolator |
| Output Type | Transistor |
| Number of Channels | 1 |
| Isolation Voltage | 5000 Vrms |
| Package | 4-DIP |
| Mounting | Through Hole |
| Isolation Method | Optical |
Equivalent
Potential EL817-family replacements should be compared for CTR grade, isolation voltage, collector-emitter voltage, LED forward current, switching speed, temperature range, package dimensions, and pin assignment. A visually similar optocoupler is not necessarily a drop-in replacement.
Manufacturer
Everlight Electronics manufactures the EL817 family of phototransistor optocouplers for electrical isolation and signal-transfer applications.
Applications
Power Supply Feedback
Commonly used in isolated power supply feedback loops to transfer regulation information across an isolation barrier.
Control Isolation
Provides isolation between controller circuitry and higher-voltage or noisy circuit domains.
Digital Interface Isolation
Can isolate logic signals between electrically separated circuit sections.
Industrial Electronics
Suitable for control, monitoring, and interface isolation in industrial electronic equipment.
Disclaimer
The information provided on this page is for reference and product identification purposes only. Verify CTR grade, isolation voltage, package, pinout, operating temperature, and electrical limits against the latest manufacturer documentation before design or replacement.

