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HSR312L from FAI,Fairchild Semiconductor

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HSR312L

Manufacturer: FAI, FAIRCHILD, FSC

PHOTOVOLTAIC SOLID-STATE RELAY OPTOCOUPLERS

Partnumber Manufacturer Quantity Availability
HSR312L FAI, FAIRCHILD, FSC 255 In Stock

Description and Introduction

PHOTOVOLTAIC SOLID-STATE RELAY OPTOCOUPLERS **Introduction to the HSR312L by Fairchild Semiconductor**  

The HSR312L is a high-speed, optically isolated MOSFET driver designed by Fairchild Semiconductor to deliver efficient switching performance in power electronics applications. This component integrates a gallium arsenide (GaAs) infrared LED paired with a high-speed photodetector and output driver, ensuring reliable signal transmission while maintaining electrical isolation between input and output stages.  

With a peak output current capability of 2.5A, the HSR312L is well-suited for driving power MOSFETs and IGBTs in motor control, inverters, and switch-mode power supplies. Its high common-mode transient immunity (CMTI) minimizes noise interference, making it ideal for high-voltage environments. The device also features a wide operating voltage range (15V to 30V) and fast propagation delays, enhancing system responsiveness.  

The HSR312L’s compact DIP-8 package ensures ease of integration into various circuit designs while maintaining robust performance. Its built-in under-voltage lockout (UVLO) protection safeguards against unstable supply conditions, improving system reliability.  

Engineers seeking a dependable, high-speed optocoupler driver for demanding power applications will find the HSR312L a practical solution, combining isolation, efficiency, and protection in a single component.

Application Scenarios & Design Considerations

PHOTOVOLTAIC SOLID-STATE RELAY OPTOCOUPLERS

Alternative Part Number

  • TLP3120 --: Photorelay in a similar small outline package with comparable on-resistance and load voltage ratings, widely used as a direct functional substitute.
  • AQY212S --: PhotoMOS relay offering similar load voltage and current capability in a comparable surface-mount package, suitable for signal switching applications.
  • PVT312 --: Photovoltaic MOSFET relay with similar switching characteristics and isolation ratings, usable as an alternative solid-state relay option.
  • LCA110 --: Optically coupled solid-state relay offering comparable switching characteristics and isolation, usable as an alternative with minor design review.

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