BV202S12003A

Overview

The BV202S12003A is a sealed power transformer from Zettler Magnetics, designed for through-hole mounting. It features a single primary winding rated for 230V AC input and a single secondary winding providing 12V output at 29mA. The unit delivers a maximum power of 0.35VA. Key electrical specifications include an isolation voltage of 4200Vrms between windings. The component utilizes PC pin termination for PCB integration. Physical dimensions are 24.00mm in length, 23.00mm in width, with a maximum seated height of 16.00mm.

Feature Summary

• Encapsulated construction for environmental protection
• Single-ended 230V primary to 12V secondary conversion
• High isolation rating of 4200Vrms
• Through-hole PC pin termination style

Applications

• Low-power AC-DC power supply circuits
• Control transformers for small appliances
• Signal isolation in electronic equipment
• Industrial control panel power distribution

Procurement Notes

Verify the specific suffix '3A' against the manufacturer's latest datasheet to confirm the exact secondary voltage and current ratings, as series variations may exist. Ensure the required thermal class T50B aligns with the operational temperature range of the target application. Confirm that the encapsulated form factor fits within the mechanical constraints of the final assembly.

Selection Notes

Select this model when a compact, encapsulated transformer is needed for 230V mains applications requiring low current output. The EE20 core size offers a balance of footprint and performance for sub-1VA loads. Consider the 16mm height limit for vertical mounting scenarios. Verify compatibility with standard PCB hole patterns for PC pins before finalizing the design.

Part Context

This component belongs to the BV Series of encapsulated power transformers by Zettler Magnetics. The series utilizes EE20 laminated cores, offering a standardized footprint for various VA ratings. The BV202S12003A represents a specific configuration within this family, optimized for 230V input systems where space efficiency and basic insulation are prioritized over higher power delivery.

Replacement Considerations

Direct substitutes must match the 0.35VA rating, 230V primary, 12V secondary, and 29mA current. Compatible alternatives should maintain the 4200Vrms isolation and similar physical dimensions (24x23x16mm). Verify that any replacement part supports the same thermal class and termination style.