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The 189NQ150R-1 is a Schottky rectifier diode manufactured by SMC Diode Solutions, rated for 150 V reverse voltage and 180 A average forward current. It utilizes the PRM1-1 (Half Pak Module) package designed for chassis mounting. Key electrical characteristics include a maximum reverse leakage current of 4.5 mA at 150 V and a capacitance of 4500 pF measured at 5 V and 1 MHz. The device supports junction temperatures up to 175°C.
Verify the specific suffix 'R-1' against official SMC Diode Solutions documentation to confirm the PRM1-1 package type and pinout configuration. Ensure that the required chassis mounting hardware and thermal interface materials are compatible with the Half Pak module design before procurement.
Select this component when applications demand high current handling capabilities exceeding standard discrete packages. The PRM1-1 package offers a lower profile compared to parallel DO-5 configurations while maintaining high power throughput. Verify that the system design accommodates chassis mounting requirements and adequate heat sinking for the specified thermal performance.
This part belongs to the NQ series of Schottky rectifiers from SMC Diode Solutions. The series includes variants such as the 69CNQ150SL for surface mount applications and other chassis-mounted modules like the 249NQ150/R-1. These components are designed for industrial environments requiring reliable high-power rectification.
The datasheet for the 249NQ150/R-1 indicates it replaces three parallel DO-5 diodes. Engineers should verify if existing designs using parallel discrete diodes can be directly substituted with this single module to reduce footprint and assembly complexity.