Allen-Bradley 74101-169-78, also cataloged as 1336-BDB-SP28D, is a PCB gate-drive board that serves as the base gate-drive module for Allen-Bradley 1336STG drive systems. Designed for 460V operation, this gate-driver board provides the signal interface that triggers the main inverter stage, enabling controlled switching of the drive’s power semiconductors. Used for service, repair, or retrofit of 1336 gate-drive configurations in industrial automation, the part is identified by both numbers (74101-169-78 and 1336-BDB-SP28D) to reflect its role within the 1336 gate-driver family.
