BV302D12028

Overview

The BV302D12028 is a 2.8VA encapsulated power transformer from the Zettler Magnetics BV series, designed for through-hole mounting. It features a single primary winding rated for 230VAC input at 50/60Hz. The secondary configuration provides dual 12VAC outputs, delivering a maximum current of 117mA per winding. Constructed with EI30 laminations and an EI30-18 core size, the unit measures 32.8x27.8mm with a height of 29.8mm. It supports operating temperatures up to 120°C and complies with UL safety standards.

Feature Summary

• Encapsulated construction for environmental protection and mechanical stability
• Dual isolated secondary windings providing independent 12VAC outputs
• Through-hole mounting design compatible with standard PCB assembly processes
• EI30 lamination core structure ensuring efficient magnetic flux transfer

Applications

• Low-power AC to DC conversion circuits requiring dual voltage rails
• Industrial control systems utilizing 230VAC mains input
• Consumer electronics enclosures requiring UL-certified isolation
• Signal processing equipment needing stable 12VAC auxiliary power

Procurement Notes

Verify that the specific order matches the BV302D12028 designation to ensure correct dual 12VAC secondary output. Confirm that the application environment remains within the specified 120°C thermal limit. Check that the PCB footprint accommodates the 32.8x27.8mm case dimensions and 29.8mm height. Ensure the supply voltage aligns with the 230VAC primary rating before installation.

Selection Notes

Select this component when dual isolated 12VAC outputs are required from a 230VAC source. The 2.8VA rating suits low-current applications where space constraints favor the EI30 form factor. Consider the encapsulated design if environmental sealing is necessary. Verify that the through-hole package fits the target PCB layout without interference from adjacent components or enclosure walls.

Part Context

This transformer belongs to the Zettler Magnetics BV series of encapsulated power transformers. The series utilizes EI30 laminations and offers various voltage configurations. The BV302D12028 specifically denotes the 2.8VA variant with dual 12VAC secondaries. Similar models in the series include BV302S12028, which shares the same VA rating but may differ in packaging or certification details.

Replacement Considerations

Direct substitutes must match the 2.8VA rating, 230VAC primary, and dual 12VAC secondary configuration. Models like BV302S12028 share the electrical specifications but require verification of physical compatibility and certification equivalence. Ensure any replacement maintains the EI30 core size and through-hole mounting requirements.