160D20

Overview

The Hammond Manufacturing 160D20 is a low voltage power transformer designed for printed circuit board (PCB) mounting. It features dual primary windings supporting 115 VAC and 230 VAC input voltages, ensuring compatibility with various global power standards. The unit provides a 20 VAC center-tapped secondary output at a rated current of 45 mA, delivering a total power capacity of 1 VA. Constructed for through-hole installation, it utilizes solder pin termination for secure PCB integration. The transformer operates within a temperature range of 0°C to +130°C and supports frequencies of 50 Hz and 60 Hz.

Feature Summary

• Dual primary winding configuration allows flexible connection to either 115 VAC or 230 VAC supply lines.
• Center-tapped secondary design facilitates full-wave rectification circuits in low-power applications.
• Through-hole construction ensures stable mechanical attachment directly onto printed circuit boards.

Applications

• Low-power electronic control systems
• Signal processing circuitry requiring isolated power
• Industrial instrumentation modules

Procurement Notes

Verify the specific secondary current rating against application requirements, as datasheet listings may vary between 45 mA and 1.2 A depending on the exact revision. Confirm that the 1 VA power rating meets the load demands of the target circuit. Ensure the PCB footprint matches the through-hole pin spacing defined in the official dimensional drawings prior to ordering.

Selection Notes

Select this component when a compact, low-power isolation solution is required for PCB-based designs. The dual primary winding capability makes it suitable for products intended for international markets with varying line voltages. Consider the thermal limits and physical dimensions to ensure adequate clearance and heat dissipation within the final enclosure assembly.

Part Context

This model belongs to the Hammond 160 series, which specializes in low-voltage transformers for direct board mounting. The series offers various power ratings and voltage configurations to support diverse electronic design needs. The 160D20 specifically addresses applications requiring minimal power consumption and space-constrained form factors.

Replacement Considerations

Cross-reference part numbers such as 160H20 for higher current variants within the same series. Verify that any substitute maintains the 115/230 VAC dual primary specification and the 20 VAC center-tapped secondary requirement to ensure electrical compatibility.