161F120

Overview

The Hammond Manufacturing 161F120 is a low voltage power transformer designed for PCB mounting. It features a single primary winding rated at 115 VAC and dual secondary windings providing 120 VAC center-tapped output. The unit has a power rating of 4.4 VA with a secondary current capacity of 35 mA. Constructed with a vertical mount, split bobbin design, it measures 1.2 inches in length, 1.2 inches in width, and 1.2 inches in height.

Feature Summary

• Vertical mount configuration with a split bobbin design for stable PCB integration
• Dual secondary winding architecture enabling center-tapped output configurations
• Low profile form factor optimized for direct printed circuit board installation

Applications

• Low voltage power supply circuits requiring isolated AC conversion
• Electronic equipment utilizing center-tapped rectification topologies
• Control panels and industrial automation modules needing compact transformers

Procurement Notes

Verify the specific datasheet version to confirm mechanical dimensions and electrical tolerances before finalizing the design. Ensure the PCB footprint matches the component's lead spacing and mounting hole requirements. Confirm that the 115 VAC primary rating aligns with the available line voltage in the target application environment to prevent operational failure.

Selection Notes

Select this model when a compact, board-mount solution is required for 115 VAC input applications. The 4.4 VA rating suits low-power control circuits rather than high-load drives. Consider the split bobbin construction for improved isolation characteristics compared to standard wound designs. Evaluate the physical space constraints against the 1.2-inch cubic footprint to ensure adequate clearance on the assembly.

Part Context

This component belongs to the Hammond 161 series of low voltage PCB mount transformers. The series offers various VA ratings and output voltages to accommodate different power requirements. The 161F120 specifically addresses applications needing a 120 VAC center-tapped output from a standard 115 VAC source in a minimal volume.

Replacement Considerations

The 164F120 serves as a higher-capacity alternative within the same product family, offering 6 VA power and 50 mA current capability while maintaining similar mounting characteristics. Verify if the increased power rating fits the thermal and spatial constraints of the existing design.