VTX-121-3832-218

Overview

The Vigortronix VTX-121-3832-218 is a 3.2 VA encapsulated PCB mains transformer designed for direct board mounting. It accepts an input voltage of 230V AC and provides a single secondary output of 18V DC equivalent at the rated load. The unit features a compact encapsulated construction suitable for standard printed circuit board assembly processes, ensuring electrical isolation between primary and secondary windings while maintaining stable voltage transformation for low-power electronic applications.

Feature Summary

• Encapsulated construction for environmental protection and mechanical stability
• Direct PCB mounting design for simplified assembly integration
• Mains frequency operation with fixed voltage transformation ratio

Applications

• Low-power consumer electronics power supplies
• Industrial control panel auxiliary power circuits
• General purpose AC to isolated DC conversion stages

Procurement Notes

Verify that the application requires a fixed 18V secondary output compatible with downstream rectification or regulation. Confirm that the 3.2 VA rating meets the peak current demands of the load circuit. Ensure the PCB footprint matches the component's lead spacing and that the operating environment does not exceed the thermal limits of the encapsulation material. Check for specific regional safety certifications required by the end product.

Selection Notes

Select this component when a simple, cost-effective solution is needed for stepping down mains voltage to a lower AC level for subsequent processing. It is appropriate for designs where high efficiency is not critical but reliability and low cost are priorities. Consider alternative models if higher power ratings, multiple outputs, or digital control interfaces are required. Evaluate space constraints as the encapsulated form factor may limit placement options on dense boards.

Part Context

This part belongs to the Vigortronix VTX series of encapsulated PCB transformers, which are widely used in general-purpose power applications. The series offers various VA ratings and output configurations to suit different power requirements. These components are characterized by their robust construction and suitability for automated assembly processes, making them a common choice for mass-produced electronic devices requiring isolated power sources.

Replacement Considerations

Cross-reference tools indicate parametrically similar parts exist within the market. Verify that any substitute maintains the same 3.2 VA rating, 230V input, and 18V output specifications. Ensure the replacement part has compatible physical dimensions and pinout configuration to fit existing PCB layouts without redesign.