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H11A817B.300W from FSC,Fairchild Semiconductor

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15.625ms

H11A817B.300W

Manufacturer: FSC

4-Pin DIP Phototransistor Output Optocoupler

Partnumber Manufacturer Quantity Availability
H11A817B.300W,H11A817B300W FSC 3000 In Stock

Description and Introduction

4-Pin DIP Phototransistor Output Optocoupler The **H11A817B.300W** from Fairchild Semiconductor is a high-performance optocoupler designed for reliable signal isolation in electronic circuits. Combining an infrared LED with a phototransistor detector, this component ensures electrical separation between input and output, making it ideal for noise-sensitive applications such as power supplies, industrial controls, and communication systems.  

With a minimum isolation voltage of **5,000Vrms**, the H11A817B.300W provides robust protection against voltage transients and ground loop interference. Its compact DIP-6 package allows for easy integration into PCB designs while maintaining high-speed switching performance. The device features a **current transfer ratio (CTR)** ranging from 50% to 600%, ensuring efficient signal transmission across the isolation barrier.  

Key specifications include a forward current of **60mA** for the input LED and a collector-emitter voltage of **80V** for the output phototransistor. The H11A817B.300W operates over a wide temperature range (-55°C to +110°C), making it suitable for harsh environments.  

Engineers favor this optocoupler for its reliability, low power consumption, and compliance with industry safety standards. Whether used in motor drives, medical equipment, or automation systems, the H11A817B.300W delivers consistent performance in critical isolation applications.

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