ASSR-402C-302E Overview
The ASSR-402C-302E is a high-performance solid-state relay designed for industrial applications requiring precise electrical isolation and reliable switching. Featuring a compact 4-pin SOP4 package, this device integrates an LED input with a phototriac output, providing excellent noise immunity and long-term stability. With a load voltage rating up to 240 VAC and a high isolation voltage of 3750 Vrms, it ensures safe operation in demanding environments. Its low input current and fast switching capabilities make it an ideal solution for controlling AC loads in automation, measurement, and control systems. For detailed technical data and ordering information, visit IC Manufacturer.
ASSR-402C-302E Technical Specifications
| Parameter | Specification | Unit |
|---|---|---|
| Input LED Forward Current (IF) | 20 | mA (max) |
| Input LED Forward Voltage (VF) | 1.2 (typical) | V |
| Output Load Voltage (VO) | 240 | VAC (max) |
| Output Load Current (IO) | 0.3 | A (max) |
| Isolation Voltage (VISO) | 3750 | Vrms |
| Turn-On Time (ton) | 1.5 | ms (typical) |
| Turn-Off Time (toff) | 1.0 | ms (typical) |
| Operating Temperature Range (Topr) | -40 to +100 | ??C |
| Package | SOP4 | – |
ASSR-402C-302E Key Features
- High electrical isolation: Provides 3750 Vrms isolation to protect sensitive control circuits from high voltages, enhancing system safety and reliability.
- Compact SOP4 package: Enables space-saving PCB layouts, ideal for compact industrial control modules.
- Low input current: Requires only 20 mA maximum forward current to activate, reducing power consumption in control circuits.
- Fast switching times: Turn-on and turn-off times of approximately 1.5 ms and 1.0 ms respectively, supporting efficient switching of AC loads.
- Wide operating temperature range: Suitable for harsh industrial environments with temperature tolerance from -40??C to +100??C.
- Reliable phototriac output: Ensures noise immunity and long operational lifetime without mechanical wear.
- Load voltage compatibility: Supports up to 240 VAC load voltage, making it versatile for typical industrial AC load applications.
ASSR-402C-302E Advantages vs Typical Alternatives
This solid-state relay offers superior electrical isolation at 3750 Vrms compared to many typical alternatives, ensuring enhanced safety and noise immunity. Its low input current reduces control circuit power consumption, while the compact SOP4 package facilitates easy integration into tight PCB spaces. Additionally, the fast switching times and wide temperature range improve operational reliability and efficiency, making it a robust choice for industrial automation over mechanical relays or lower-spec optical isolators.
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Typical Applications
- Industrial automation systems requiring reliable AC load switching with electrical isolation to protect sensitive microcontrollers and PLCs.
- Measurement and control equipment where precise, noise-immune switching is essential for accurate sensor interfacing.
- Home appliances and HVAC systems needing compact, low-power solid-state relays to switch fan motors or heating elements safely.
- Signal isolation in test and measurement instruments to prevent ground loops and improve signal integrity.
ASSR-402C-302E Brand Info
The ASSR-402C-302E is part of a trusted product line from a leading semiconductor manufacturer specializing in optoelectronic components. Designed for industrial-grade performance, this solid-state relay combines advanced phototriac technology with robust packaging and stringent quality standards. The brand emphasizes reliability, safety, and ease of integration, providing engineers and sourcing professionals with dependable solutions for demanding electrical isolation and switching challenges.
FAQ
What is the maximum load voltage the device can handle?
The device can safely switch AC loads up to 240 VAC, making it suitable for a wide range of industrial and commercial applications where standard mains voltage control is required.
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How does the isolation voltage benefit my application?
The isolation voltage rating of 3750 Vrms ensures that the input control side is electrically separated from the output load side. This protects sensitive control electronics from high voltages and transient surges, enhancing safety and reducing noise interference.
What are the typical switching times for this solid-state relay?
Turn-on time is typically around 1.5 milliseconds, and turn-off time is approximately 1.0 millisecond. These fast switching speeds enable efficient control of AC loads with minimal delay.
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Is the device suitable for harsh environmental conditions?
Yes, it supports an operating temperature range from -40??C to +100??C, allowing it to function reliably in various industrial environments, including those with wide temperature fluctuations.
What package does the device come in, and why is it beneficial?
This model is supplied in a compact SOP4 package, which is ideal for space-constrained PCB layouts. Its small footprint simplifies integration into complex systems without compromising performance or reliability.