162H28

Overview

The Hammond Manufacturing 162H28 is a low voltage PCB mount power transformer featuring a low profile design. It operates at 50/60 Hz with dual primary windings rated for 115 VAC and 230 VAC inputs. The unit provides a 20 VA power rating with a secondary output of 28 VAC center-tapped at 0.7 A, or 14 VAC at 1.4 A in parallel configuration. It utilizes through-hole mounting and includes dual non-concentrically wound secondary windings.

Feature Summary

• Low profile construction with split bobbin design
• Dual primary winding capability for 115V and 230V operation
• Non-concentrically wound dual secondary windings

Applications

• Low voltage PCB mounting applications
• Industrial control circuits requiring isolation
• Equipment utilizing 50/60 Hz AC power sources

Procurement Notes

Verify the specific datasheet version to confirm dimensional tolerances and insulation class requirements for your enclosure. Ensure the PCB layout accommodates the through-hole pin spacing and height constraints defined in the official mechanical drawings. Confirm that the thermal dissipation characteristics align with the operating environment specifications provided by the manufacturer.

Selection Notes

Select this component when a compact, low-voltage isolation transformer is required for board-level integration. The dual primary winding allows flexibility for different regional input voltages without changing hardware. The split bobbin design supports efficient heat dissipation in confined spaces compared to standard enclosures.

Part Context

This model belongs to the Hammond 162 series of low voltage transformers designed specifically for printed circuit board mounting. The series emphasizes space efficiency through low-profile geometries while maintaining standard electrical isolation capabilities for industrial and commercial electronic assemblies.

Replacement Considerations

Direct substitutes within the same series include models with identical form factors but different voltage ratings, such as the 162F20 or 162H48. Verify that any replacement maintains the required 20 VA power rating and compatible physical dimensions for the existing PCB footprint.