ASSR-4120-502E Overview
The ASSR-4120-502E is a high-performance solid-state relay designed for efficient and reliable switching in industrial and automation environments. This device offers galvanic isolation between input and output, ensuring noise immunity and enhanced safety for control circuits. With a compact SIP4 package and a zero-cross turn-on feature, it delivers low electromagnetic interference and extended operational lifetime. Ideal for interfacing low power control signals to higher voltage AC loads, it is engineered to meet stringent industrial standards. For detailed manufacturer information and sourcing, visit IC Manufacturer.
ASSR-4120-502E Technical Specifications
| Parameter | Specification |
|---|---|
| Input Control Voltage | 4?C32 VDC |
| Output Load Voltage | 24?C280 VAC |
| Maximum Output Current | 0.5 A (AC) |
| Isolation Voltage (Input to Output) | 4000 VRMS |
| Turn-On Time | 1/2 AC cycle (zero-cross switching) |
| Off-State Leakage Current | Max 5 mA at rated voltage |
| Operating Temperature Range | -40 ??C to +100 ??C |
| Package Type | SIP4 (Single Inline Package, 4 pins) |
ASSR-4120-502E Key Features
- Galvanic Isolation: Ensures safe separation between control and load circuits, protecting sensitive electronics from high voltage spikes and noise.
- Zero-Cross Switching: Activates the relay output at the zero crossing point of the AC waveform, reducing electromagnetic interference and stress on the load.
- Compact SIP4 Package: Facilitates easy PCB mounting and integration into existing designs, optimizing board space without sacrificing performance.
- Wide Input Voltage Range: Supports control voltages from 4 to 32 VDC, providing flexibility for various industrial control systems.
ASSR-4120-502E Advantages vs Typical Alternatives
This device offers superior galvanic isolation up to 4000 VRMS, enhancing safety compared to many typical relays. Its zero-cross turn-on feature minimizes electromagnetic interference, improving system reliability. The solid-state design delivers longer operational life and faster switching times than mechanical relays, with lower off-state leakage current and compact integration, making it an efficient and robust choice for industrial AC load control.
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Typical Applications
- Industrial automation systems requiring reliable isolation and switching of AC loads, such as motor controls, heaters, and solenoids, benefiting from low EMI and compact size.
- Programmable Logic Controller (PLC) output interfaces where low input current and high isolation are critical for protecting control electronics.
- Home and building automation for switching lighting and HVAC equipment with noise immunity and silent operation.
- Test and measurement instruments that need precise, repeatable switching of AC loads without mechanical wear.
ASSR-4120-502E Brand Info
The ASSR-4120-502E is part of a product line designed and manufactured by a leading semiconductor supplier specializing in optocouplers and solid-state relays. This brand is recognized for its commitment to quality, reliability, and innovation in industrial electronic components. The relay combines advanced optoelectronic technology with rigorous testing standards to ensure stable performance under demanding conditions, making it a trusted component in global industrial automation and control solutions.
FAQ
What is the maximum load current supported by this solid-state relay?
The device supports a maximum output load current of 0.5 amperes AC, making it suitable for controlling moderate power AC loads in industrial applications.
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How does the zero-cross switching feature benefit my application?
Zero-cross switching ensures that the relay turns on at the point where the AC voltage waveform crosses zero volts. This reduces electrical noise and inrush current, thereby minimizing electromagnetic interference and extending the life of connected loads.
Can this relay be used for DC load switching?
This relay is designed specifically for AC load switching and is not recommended for DC loads due to the nature of its zero-cross detection and internal TRIAC output, which rely on AC waveform characteristics.
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What level of isolation does the relay provide between input and output?
It provides galvanic isolation rated at 4000 VRMS, which protects the low-voltage control side from high-voltage AC loads, enhancing system safety and noise immunity.
What are the package dimensions and mounting options?
The relay comes in a SIP4 single inline package, which is compact and designed for easy through-hole PCB mounting. This simplifies integration into existing circuit boards with minimal space requirements.
