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Lincoln Electric M9661-32R is a reverse-polarity silicon power rectifier diode assembly designed for industrial welding equipment. It functions within the rectifier bridge to convert alternating current (AC) from the main alternator or transformer into direct current (DC) for welding processes. The component is engineered to handle thermal stresses and high current loads while maintaining electrical balance across the diode bank.
Features
Genuine OEM replacement component
Silicon power rectifier diode
Stud-mount design for thermal management and heat sink interface
Matches original forward voltage drop specifications
Matches original reverse breakdown voltage specifications
Designed for high current load handling
Includes installation instruction sheet
Includes mounting hardware (batch dependent)
Specifications
Manufacturer: Lincoln Electric
Part Number: M9661-32R
SKU: 9SM9661-32R
Current Rating: 150 A
Voltage Rating: 300 V
Polarity: Reverse Polarity
Material: Silicon
Mounting Style: Threaded Stud-Mount
Component Class: Power Electronics
Packaging: 1 per each
Applications
Lincoln Electric Ranger 8 engine-driven welders
Lincoln Electric SAE series engine-driven welders
Lincoln Electric Classic series engine-driven welders
Lincoln Electric Vantage series engine-driven welders
Industrial welding power source rectifier assemblies
DC output system maintenance and repair
Multi-process welding machine restoration
Generator-style welding equipment maintenance
Replacement of failed diodes causing weak or unstable arcs
