EL814 Phototransistor Optocoupler IC – AC/DC Input SMD-4

Description

The EL814 is a versatile optocoupler IC that features two infrared-emitting diodes connected in inverse-parallel. This unique design allows the device to respond to both AC and DC input signals, making it an ideal choice for applications where the polarity of the input signal may reverse or where alternating current signals need to be isolated.

The input diodes are optically coupled to a high-performance phototransistor detector, providing robust electrical isolation of up to 5,000 Vrms. Its compact 4-pin surface-mount (SMD-4) package and wide operating temperature range (-55°C to 110°C) make the EL814 a reliable solution for high-density PCB designs in industrial, consumer, and communication hardware.

Note: Product images are for reference only. The actual product may vary in appearance or manufacturer marking depending on stock availability.

Features

• Input Flexibility: Inverse-parallel LED configuration supports both AC and DC input signals.
• High Isolation: 5,000 Vrms minimum input-to-output isolation.
• High Voltage Handling: Output transistor rated for up to 80V.
• Thermal Robustness: Guaranteed operation across a wide range of -55°C to 110°C.
• Packaging: Compact 4-pin Surface Mount (SMD-4) package optimized for high-density assembly.

Benefits

• Simplifies circuit design for systems handling bidirectional signals.
• Protects sensitive low-voltage control logic from high-voltage AC lines.
• Excellent reliability for industrial control environments and long-term service.
• Standardized SMD footprint ensures compatibility with modern automated manufacturing.

Applications

• AC/DC Signal Isolation
• Programmable Logic Controllers (PLCs)
• Telephone Line Interface Circuits
• Bidirectional Data Transmission
• System-to-System Logic Interfacing

Package Includes

• 1 x EL814 Phototransistor Optocoupler IC (SMD-4)

Specifications