LP34-340B12

Power Transformers Overview

The LP34-340B12 is a semi-toroidal laminated power transformer from Pulse Electronics, designed for low-frequency applications. It features a 12VA rating with a primary voltage of 120VAC at 50/60Hz. The secondary configuration provides parallel output of 17V at 0.7A or series output of 34V at 0.35A. This through-hole mounted component utilizes an open-style construction to reduce electromagnetic interference.

Power Transformers Feature Summary

• Semi-toroidal construction reduces electromagnetic interference
• Low profile plug-in design facilitates chassis mounting
• Dual secondary winding options for flexible voltage configurations

Power Transformers Applications

• General purpose AC power supply circuits
• Chassis-mounted electronic equipment
• Industrial control systems requiring isolated power

Power Transformers Procurement Notes

Verify the specific secondary voltage requirement (17V parallel or 34V series) against the target circuit design before procurement. Confirm that the through-hole mounting style and physical dimensions are compatible with the intended PCB layout or chassis assembly. Ensure the operating frequency matches the 50/60Hz specification.

Power Transformers Selection Notes

Select this component when a compact, low-profile power transformer is required for standard line frequencies. The semi-toroidal design offers EMI reduction benefits compared to standard laminated types. Consider the 12VA power limit and current ratings to ensure adequate capacity for the load without exceeding thermal limits.

Power Transformers Part Context

This part belongs to the LP34 series of low-frequency, open-style laminated transformers. The series includes various ratings and pin configurations, all sharing a similar low-profile, plug-in form factor suitable for international PC plug-in and chassis applications.

Power Transformers Replacement Considerations

Cross-reference with other Pulse Electronics LP series transformers such as LP34-170B11 or LP34-75B28 if different power ratings are needed. Verify that any substitute maintains the same semi-toroidal construction and through-hole mounting requirements.