TN4035HA-8GY

Scrs Overview

The TN4035HA-8GY is an automotive-grade silicon controlled rectifier (SCR) manufactured by STMicroelectronics. It features a maximum repetitive peak off-state voltage of 800 V and an on-state current rating of 40 A RMS. The device utilizes standard recovery technology and is housed in a TO-263-3 surface mount package, commonly referred to as D2PAK. Designed for high-reliability environments, it supports operating junction temperatures up to 175°C and meets specific automotive qualification standards.

Scrs Feature Summary

• Automotive-grade reliability designed for harsh electrical environments
• High current handling capability with 40 A RMS on-state rating
• Surface mount construction for automated assembly integration

Scrs Applications

• Automotive capacitor discharge ignition systems
• Battery management circuit protection
• Power distribution unit control logic

Scrs Procurement Notes

Verify the component authenticity through authorized STMicroelectronics distributors or certified agents. Confirm that the received units match the exact part number TN4035HA-8GY without unauthorized suffixes. Ensure storage conditions comply with moisture sensitivity levels specified in the datasheet to maintain performance integrity prior to soldering.

Scrs Selection Notes

Select this component when designing circuits requiring robust SCR protection in automotive applications. The 800 V blocking voltage provides sufficient margin for typical vehicle electrical systems. Consider the thermal characteristics of the D2PAK package for heat dissipation requirements in high-current scenarios compared to lower-rated alternatives.

Scrs Part Context

This SCR belongs to STMicroelectronics' automotive discrete semiconductor portfolio. It complements other thyristor products by offering higher current capacity than smaller signal devices while maintaining compact surface mount form factors suitable for modern electronic control units and power management modules in vehicles.

Scrs Replacement Considerations

Direct substitutes must match the 800 V/40 A specification and TO-263-3 package. Verify equivalent automotive grade certification and standard recovery characteristics before substitution to ensure circuit compatibility.