رله‌ رله‌ حالت‌جامد (اس اس آر)

Product Attributes

Introduction

APSEMI photorelay devices are reliable, technologically advanced logic-to-power interface components. Their fundamental function is to receive low-current signals from a microprocessor to control switching of AC and DC loads, while providing an isolation barrier between logic and power. Although this function is common to all relays, photorelays offer significant advantages over their mechanical counterparts, including: unlimited service life (no mechanical or electrical life limitations), bounce-free switching, higher speed and high-frequency switching capability, greater sensitivity (lower power consumption), immunity to EMI or RFI, no arcing, bounce, or noise, superior resistance to vibration and shock, AC or DC load switching, and compact package size. A photorelay operates by receiving a low-level input current (<5mA) that drives an infrared LED, which is optically coupled to a photodiode array die. This IC then generates a photovoltage to power two MOSFETs typically connected in a source-to-source configuration, enabling switching of AC and DC output loads. Since photorelays perform their switching function essentially by moving photons, no mechanical wear occurs, delivering consistent and reliable switching performance.

Features

• Long lifespan (unlimited mechanical and electrical life)
• Bounce-free switching
• Higher speed and high-frequency switching capability
• Higher sensitivity (lower power consumption)
• Immunity to EMI/RFI
• No arcing, bouncing, or noise
• Superior vibration and shock resistance
• AC or DC load switching
• Compact package size

Applications

• Telecom/datacom switching
• Medical equipment
• Process control
• Reed relay replacement