12-450-LPI

Overview

The Signal Transformer 12-450-LPI is a semi-toroidal power transformer designed for board mount applications. It operates at 50/60 Hz with a primary voltage rating of 115V or 230V and provides secondary outputs of 6.3V at 900 mA or 12.6V at 450 mA. The unit features a 6VA power rating and offers high potential isolation of 4000Vrms. Dimensions are approximately 60.20mm length, 42.10mm width, and 22.70mm maximum height. It utilizes through-hole termination and is encapsulated.

Feature Summary

• Semi-toroidal laminated core construction for efficient magnetic coupling
• Encapsulated design providing environmental protection and mechanical stability
• High potential isolation capability ensuring safety between primary and secondary circuits

Applications

• General purpose AC power conversion in electronic equipment
• Low voltage power supply stages requiring isolated DC output after rectification
• Industrial control systems utilizing standard 50/60 Hz line frequencies

Procurement Notes

Verify the specific ordering suffix and manufacturer part number against official Signal Transformer documentation to ensure correct voltage and current ratings. Confirm that the through-hole package dimensions match the target PCB layout. Check for RoHS compliance status if required by project specifications. Ensure the 4000Vrms isolation rating meets system safety standards. Validate availability through authorized distributors as lead times may vary.

Selection Notes

Select this component when a semi-toroidal form factor is preferred for space efficiency over traditional E-I laminations. Consider the 6VA power limit and dual secondary voltage options (6.3V/12.6V) relative to load requirements. The 4000Vrms isolation is suitable for basic insulation requirements. Ensure the operating temperature range supports the application environment. Verify that the physical footprint fits within the designated enclosure constraints.

Part Context

This model belongs to the LPI series of power transformers from Signal Transformer. It is categorized as a board-mount device intended for direct integration into printed circuit boards. The semi-toroidal design distinguishes it from planar or stacked core alternatives. It serves as a fundamental component for stepping down mains voltage to lower levels for downstream electronics.

Replacement Considerations

Cross-reference with other Signal Transformer LPI series models for alternative voltage configurations. Verify pinout compatibility and mounting hole patterns when substituting with similar semi-toroidal transformers from other manufacturers. Ensure equivalent isolation ratings and power handling capabilities are maintained.