PC817 - EL817 - High Density Photocoupler transistor Optocoupler - DIP-4

PC817 / EL817 High-Density Photocoupler Optocoupler - DIP-4

The PC817/EL817 is an optocoupler designed for optical isolation. It integrates an infrared LED and a silicon phototransistor. The device is housed in a compact DIP-4 package. This configuration supports through-hole PCB assemblies. It facilitates signal transfer between isolated circuits. The component offers a 5,000 Vrms isolation voltage. This ensures signal integrity across different voltage domains. It provides stable operation in electronic designs.

Specifications:

• Brand: Everlight
• Model: EL817
• Package Type: DIP-4
• Input Type: Infrared LED
• Output Type: NPN Phototransistor
• Isolation Voltage: 5,000 Vrms (typical)
• CTR (Current Transfer Ratio): 50% to 600% (depending on part bin)
• Operating Temperature: -55°C to +110°C
• RoHS Compliant: Yes

Key features and benefits:

• Optical isolation for signal transfer
• DIP-4 package for through-hole PCB assembly
• NPN phototransistor output
• Low input current operation
• 5,000 Vrms isolation voltage
• Operating temperature range: -55°C to +110°C
• RoHS compliant

Applications:

• Microcontroller signal isolation and interfacing
• Switching power supplies and AC adapters
• Signal coupling in industrial control systems and automation
• Input/output interface protection in sensitive circuits
• Integration into consumer electronics and appliances

Frequently Asked Questions:

Q: What is the pinout configuration for the PC817/EL817 DIP-4 package?
A: The PC817/EL817 DIP-4 package typically has Pin 1 (Anode) and Pin 2 (Cathode) for the LED input, and Pin 3 (Emitter) and Pin 4 (Collector) for the phototransistor output.

Q: Can the PC817/EL817 be used for AC signal isolation?
A: The PC817/EL817 is designed for DC signal isolation. For AC signals, a bridge rectifier or a specific AC input optocoupler is generally required.

Q: What is the typical forward current required for the input LED?
A: The typical forward current for the input LED is around 5mA to 20mA, depending on the desired Current Transfer Ratio (CTR) and application requirements.

Q: Is the PC817/EL817 suitable for high-speed data transmission?
A: The PC817/EL817 is generally suitable for low to medium-speed data transmission. For high-speed applications, optocouplers with faster response times are recommended.

Package Includes:

*Image shown is a representation only.

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