229D56

Power Transformers Overview

The Hammond Manufacturing 229D56 is a semi-toroidal power transformer designed for PCB mounting. It features dual primary windings rated for 115 VAC and 230 VAC operation at 50 Hz or 60 Hz. The secondary output provides 56 VAC center-tapped configuration, delivering 850 mA at full voltage or 1.7 A at half voltage (28 V). With a total power rating of 48 VA, the unit utilizes through-hole solder pin termination. Physical dimensions are 63.5 mm in length, 79.25 mm in width, and 27.18 mm in height, with an operating temperature range from 0°C to +130°C.

Power Transformers Feature Summary

• Semi-toroidal core construction for efficient magnetic coupling
• Dual primary winding capability supporting both 115 VAC and 230 VAC input standards
• Low profile design optimized for direct printed circuit board integration
• Center-tapped secondary output providing flexible voltage options

Power Transformers Applications

• Industrial control panel power supplies
• Audio equipment internal power stages
• Test and measurement instrument power systems
• General purpose low voltage AC distribution

Power Transformers Procurement Notes

Verify the specific datasheet revision and physical footprint compatibility before integration. Confirm that the target PCB layout accommodates the through-hole pin spacing and overall envelope dimensions. Ensure the application environment remains within the specified 0°C to +130°C operational temperature limits to maintain performance and safety compliance.

Power Transformers Selection Notes

Select this component when a 48 VA capacity is required for space-constrained PCB applications. The dual primary winding allows global voltage compatibility without rewiring. Consider the semi-toroidal form factor for reduced electromagnetic interference compared to standard laminated cores. Verify that the 56 VAC CT secondary matches the downstream rectification and filtering requirements.

Power Transformers Part Context

This unit belongs to the Hammond 229 series of low-profile power transformers. The series offers various power ratings and voltage configurations tailored for board-mount installations. The 229D56 represents the higher power segment within this family, utilizing a semi-toroidal architecture to balance efficiency with compact physical dimensions for dense electronic assemblies.

Power Transformers Replacement Considerations

Cross-reference with other Hammond 229 series variants such as 229B56 or 229A20 if lower power ratings suffice. Verify that substitute models match the exact 63.5 mm x 79.25 mm footprint and pinout configuration to ensure mechanical compatibility.