DMT-7-12

Overview

The DMT-7-12 is a laminated chassis-mount power transformer manufactured by Signal Transformer. It features a split bobbin design with dual primary windings rated for 115V and 230V AC input at 50/60 Hz. The unit provides two secondary outputs: a 5VDC winding capable of 2.8A and a ±12VDC center-tapped winding rated at 350mA. With a total power rating of 7 VA, it offers 2500 Vrms dielectric strength insulation. Physical dimensions are approximately 93.5 mm in length, supporting regulated power supply applications.

Feature Summary

• Dual primary winding configuration for versatile 115V or 230V AC operation
• Split bobbin construction providing enhanced isolation between windings
• Chassis mount style designed for secure mechanical installation
• Center-tapped secondary output enabling bipolar voltage generation

Applications

• Regulated power supplies requiring 5VDC and ±12VDC rails
• Medical and healthcare electronic equipment
• Automotive electronics systems

Procurement Notes

Verify the specific datasheet version to confirm exact physical dimensions and pinout configurations before integration. Ensure that the required insulation class and regulatory certifications meet the target application's safety standards. Confirm compatibility with the intended operating frequency range of 50Hz or 60Hz. Cross-reference the manufacturer's part number to distinguish from similar models within the DMT series.

Selection Notes

Select this component when a compact solution is needed for generating both unipolar and bipolar DC voltages from standard mains inputs. The dual primary winding allows flexibility for different regional voltage standards without changing hardware. Consider the chassis mounting requirement and available space for the specified physical footprint during the design phase.

Part Context

This component belongs to the DMT series of power transformers produced by Signal Transformer. The series typically includes various ratings and output configurations tailored for general-purpose power conversion. These units are characterized by their laminated core construction and robust chassis-mount design, suitable for industrial and commercial power supply architectures.

Replacement Considerations

Direct substitutes may include other Signal Transformer models within the DMT series with matching VA ratings and output voltages. Verify that any replacement maintains the same primary voltage options and secondary current capabilities. Ensure the physical mounting holes and terminal layout are compatible with existing PCBs or chassis cutouts.