89CNQ135SM

Overview

The 89CNQ135SM is a Schottky diode array manufactured by SMC Diode Solutions, featuring a single pair of common cathodes. It supports an average rectified current of 40A per diode with a maximum DC reverse voltage of 135V. The component utilizes the PRM2-SM through-hole package and operates within a junction temperature range of -55°C to 175°C. Forward voltage is specified at 990mV when conducting 40A, while reverse leakage current remains at 1.5mA under rated reverse voltage conditions.

Feature Summary

• Schottky barrier technology ensures low forward voltage drop for improved efficiency
• Common cathode configuration simplifies circuit design for dual-diode applications
• High-temperature operation capability up to 175°C junction temperature

Applications

• DC-DC converter circuits requiring high-efficiency rectification
• Power supply freewheeling diodes in switching regulators
• Reverse polarity protection in automotive or industrial power systems

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm pinout compatibility and thermal characteristics. Ensure that the selected variant matches the required voltage and current ratings for the target application. Cross-reference datasheet revisions to validate performance parameters before integration into production designs.

Selection Notes

Select this component for applications demanding high current handling with minimal conduction losses. The PRM2-SM package provides robust mechanical stability for through-hole mounting. Consider thermal management requirements given the 40A rating and operating temperature limits. Verify compliance with environmental standards such as RoHS if applicable to the end product.

Part Context

This part belongs to the 89CNQ series of Schottky diode arrays from SMC Diode Solutions. The series offers various voltage ratings tailored for different power conversion needs. The 89CNQ135SM specifically addresses mid-range voltage applications where low forward voltage is critical. It serves as a successor or alternative to older Vishay-manufactured variants in the same family.

Replacement Considerations

The 89CNQ135SM is listed as a direct replacement for the discontinued 89CNQ135ASM. Designers transitioning from the ASM variant should verify package compatibility and ensure that the new SM suffix component meets all original electrical specifications.