The EL817M is a four-pin optocoupler consisting of an infrared emitting diode coupled to a phototransistor. This device is designed for electrical isolation between input and output circuits. It is widely used in various applications to protect sensitive circuits from high voltages or noise.

Applications:

• Industrial Control Equipment
• Programmable Controllers
• Measuring Instruments
• Signal Transmission between Circuits of Different Potentials and Impedances

Features:

• High Isolation Voltage: Provides a high degree of electrical isolation between the input and output.
• Compact Package: Space-saving design for high-density applications.
• CTR (Current Transfer Ratio): Available in multiple grades to meet different application requirements.
• RoHS Compliant: Environmentally friendly and complies with regulations.

Benefits:

• Electrical Isolation: Protects sensitive circuits from voltage spikes and noise.
• Signal Transmission: Transfers signals between circuits with different voltage levels or ground potentials.
• Improved Safety: Enhances safety in high-voltage applications.
• Design Flexibility: Offers various CTR options to tailor performance.

Detailed Specifications:

• Input Forward Voltage (Vf): 1.2V (typical)
• Input Forward Current (If): 50mA (maximum)
• Collector-Emitter Voltage (Vceo): 80V
• Collector Current (Ic): 50mA (maximum)
• Isolation Voltage (Viso): 5000Vrms
• Current Transfer Ratio (CTR): 50% to 600% (depending on grade)
• Operating Temperature Range: -30°C to +110°C
• Package: DIP-4