EL817C Optocoupler/Phototransistor IC - DIP-4 Package

Optocoupler is an important component in electronics and here is EL817C that is a hugely popular optocoupler available in quartz components with such great price.

As like other optocouplers, it has an infrared emitting diode that optically controls a phototransistor. The forward voltage of the diode is typically 1.2V at 20mA of forward current. It is packaged in a 4-pin DIP Package.

Since it is the EL817C, it has the CTR value of 200-400 % at 5mA forward current with 5V of collector-emitter voltage. The phototransistor supports a maximum of 50mA collector current.

EL817C pinout:

Specification :

• Package/Case  : DIP-4
• Mounting Type  : TH
• CTR  : 200-400% at IF=5mA ,VCE=5V
• Rise Time: 18μs
• Fall Time  : 18μs
• Operating Temperature Range (°C)  : -55 to 110
• Dimensions in mm (LxWxH)  : (each) 6.50 x 4.58 x 4.50
• Maximum Collector Emitter Voltage  : 35 V
• Maximum Collector Current  : 50 mA
• Isolation Voltage  : 5000 Vrms
• Maximum Collector Emitter Saturation Voltage  :2 V
• Vf - Forward Voltage  :2 V
• Vr - Reverse Voltage  : 6 V
• Pd - Power Dissipation  : 200 mW
• Number of Channels  : 1 Channel

EL817C Applications:

1. SMPS
2. Isolated Data input
3. Measurements
4. Communication between two different voltage level circuits
5. Hazardous interfaces where manual interventions required
6. High power Relay driving