TLP3475S
Overview
The TLP3475S is a high-speed photorelay housed in a compact S-VSON4 package, designed for high-frequency signal switching in automated test equipment and instrumentation. It functions as a solid-state SPST-NO (1 Form A) relay capable of handling load voltages up to 60 V and continuous load currents up to 400 mA. By utilizing optical coupling, it provides electrical isolation between the input and output stages while maintaining a very small footprint for dense PCB layouts.
Why Choose This Part
The S-VSON4 package offers a significant reduction in mounting area compared to standard VSON4 packages, enabling higher board density. It provides high-speed switching with a low output capacitance (Coff), which is critical for maintaining signal integrity in high-frequency applications. Furthermore, it supports a wide operating temperature range from -40 degC up to 110 degC, ensuring reliability in demanding industrial environments.
Applications
Key Specifications
Getting Started
To integrate this part, design a current-limiting circuit for the input LED, typically targeting a forward voltage around 1.24 VDC. Ensure the PCB layout accounts for the small 2.00 mm length of the S-VSON4 package to maintain isolation creepage requirements. Evaluation can be performed by mounting the device on a breakout board or using Toshiba's recommended land patterns for high-frequency signal routing.
