The EL817 Optocoupler Phototransistor IC Dip-4 is a widely-used 4-pin optocoupler featuring a gallium arsenide infrared LED that optically controls a phototransistor. It provides reliable electrical isolation between low-voltage logic and high-voltage circuits, making it ideal for signal switching, microcontroller interfacing, and isolation in power electronics.
Applications:
- SMPS (Switch Mode Power Supplies)
- Voltage level shifting
- Relay and triac drivers
- Signal isolation for microcontrollers
- Hazardous interface isolation
- Measurement and control systems
Specifications:
| Parameter | Value |
|---|---|
| Package/Case | DIP-4 |
| Mounting Type | Through Hole (TH) |
| Forward Voltage (Vf) | 1.2V (typ), 2V (max) |
| Forward Current (If) | 20 mA (typ) |
| Reverse Voltage (Vr) | 6 V |
| Collector-Emitter Voltage (Vce max) | 35 V |
| Collector Current (Ic max) | 50 mA |
| Collector Saturation Voltage (Vce sat) | 2 V (max) |
| Current Transfer Ratio (CTR) | 200–400% @ 5mA, Vce = 5V |
| Rise/Fall Time | 18 μs / 18 μs |
| Isolation Voltage | 5000 Vrms |
| Power Dissipation | 200 mW |
| Operating Temperature | -55°C to +110°C |
| Number of Channels | 1 Channel |
Features:
- High isolation voltage up to 5000 Vrms
- Reliable signal transmission and noise immunity
- Compact DIP-4 through-hole package
- Compatible with standard TTL and CMOS logic
- Suitable for both analog and digital circuits
Package Includes:
- 1 x EL817 Optocoupler Phototransistor IC DIP-4
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