OPIA802DTU

Overview

The OPIA802DTU is a single-channel optoisolator manufactured by TT Electronics/Optek Technology. It features a transistor output with an integrated base for enhanced switching performance. The device provides 2500Vrms isolation voltage between input and output circuits. Key electrical specifications include a maximum output voltage of 15V, a typical forward voltage of 1.7V, and an operating temperature range from -55°C to 115°C. It is housed in an 8-DIP supplier device package.

Feature Summary

• Integrates a phototransistor with a dedicated base terminal to facilitate faster turn-off times and improved switching characteristics compared to standard transistor outputs.
• Provides robust electrical isolation rated at 2500Vrms, ensuring safety and noise immunity in signal transmission applications.
• Designed for wide industrial temperature operation, supporting functionality in extreme environments ranging from -55°C to 115°C.

Applications

• Industrial control systems requiring isolated signal interfacing
• Power supply feedback loops for voltage regulation
• Microcontroller interface circuits for noise reduction

Procurement Notes

Verify the specific suffix 'DTU' corresponds to the 8-DIP package and base-output configuration. Confirm that the required operating temperature range aligns with the -55°C to 115°C specification. Check current availability status as high-reliability components may have limited stock or longer lead times. Ensure compatibility with existing PCB footprints for 8-pin DIP packages.

Selection Notes

Select this component when fast switching speed is critical, as the base output reduces storage time. Choose over standard transistor outputs if higher isolation reliability is needed for industrial or aerospace environments. Consider the 15V output voltage limit when designing collector load circuits. Verify that the 8-DIP form factor fits the mechanical constraints of the target assembly.

Part Context

This part belongs to the OPIA series of high-reliability optoelectronics from TT Electronics/Optek Technology. The series is designed for demanding applications in industrial, aerospace, and defense sectors. These components undergo rigorous screening processes, including MIL-STD-750 testing, to ensure quality and longevity in extreme conditions.

Replacement Considerations

Direct substitutes must match the 8-DIP package, 2500Vrms isolation, and transistor-with-base output topology. Verify equivalent switching speeds and voltage ratings. Generic transistor-output optocouplers may not provide the same turn-off performance due to the lack of a base drive terminal.