EL817C Optocoupler – SOP-4 Phototransistor Output, 5kV Isolation – Everlight

Part No. 3908171477 - EL817S1 (C) (TU) - F

The EL817C Optocoupler is a compact, high-reliability optical isolation device featuring an infrared LED coupled to a phototransistor, all housed in a SOP-4 SMD package. Designed for safe signal transfer across high-voltage domains, the EL817C provides excellent electrical isolation and stable performance in digital and analog interfacing applications.

With an isolation voltage of 5.0 kV, the EL817C ensures strong protection between input and output circuits, making it suitable for switching power supplies, industrial controllers, microcontroller interfaces, and feedback systems. The device supports a high collector-emitter voltage rating of 35V and offers a Current Transfer Ratio (CTR) range of 200% to 400%, enabling efficient signal coupling at low input currents.

Its 200mW power dissipation capability and wide operating characteristics make it a dependable choice for compact, high-density PCB designs.

Key Features:

• High collector-emitter voltage: 35V
• CTR range: 200% to 400%
• High isolation voltage: 5000V between input and output
• Power dissipation: 200mW
• SOP-4 SMD package for compact board placement
• Reliable phototransistor output for digital and analog signal isolation

Package Includes:
5 x EL817C Optocoupler

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