MET-42-T

Audio Transformers Overview

The Triad Magnetics MET-42-T is a single-channel audio transformer designed for impedance matching applications. It features a primary impedance of 150 ohms and a secondary impedance of 12 ohms, resulting in a turns ratio of approximately 3.54:1. The component supports a power rating of 50mW and operates within a frequency range of 300 Hz to 100 kHz. It utilizes through-hole radial termination for PCB mounting. Key electrical specifications include a maximum DC current rating of 90 mA, a primary DC resistance of 20 ohms, and a secondary DC resistance of 2.5 ohms. The unit provides an insulation voltage of 1000 Vrms and functions reliably within a temperature range of -20°C to +85°C.

Audio Transformers Feature Summary

• Provides precise impedance transformation between 150-ohm primary and 12-ohm secondary circuits for signal integrity.
• Engineered with high reliability construction to withstand demanding design environments and ensure durability.
• Supports wideband audio frequency operation from 300 Hz to 100 kHz for versatile coupling applications.

Audio Transformers Applications

• Audio signal coupling and impedance matching
• Data transmission line interfacing
• Voice communication system integration

Audio Transformers Procurement Notes

Verify the specific suffix designation when ordering, as variants such as MET-42-T-B may exist with different terminal configurations or ratings. Confirm that the 150-ohm primary and 12-ohm secondary impedance values align with the target circuit requirements. Ensure the through-hole radial footprint matches the PCB layout constraints. Cross-reference the 50mW power rating against peak signal levels to prevent saturation. Validate the operating temperature range against the intended environmental conditions.

Audio Transformers Selection Notes

Select this component when a step-down impedance ratio from 150 ohms to 12 ohms is required for audio or data signals. Consider the 90 mA DC current limit to ensure it does not exceed the core's linear operating region. Evaluate the physical dimensions against available board space, noting the radial lead style. Compare the 300 Hz to 100 kHz bandwidth against the application's frequency spectrum needs. Assess the need for unshielded construction versus potential interference concerns in the final assembly.

Audio Transformers Part Context

The MET-42-T belongs to Triad Magnetics' portfolio of high-reliability audio transformers. These components are engineered to provide the precision and durability necessary for modern electronic designs. The product falls under the category of impedance matching transformers, specifically tailored for audio and signal processing applications where accurate voltage transfer and impedance bridging are critical for system performance.

Audio Transformers FAQ

What is the insulation voltage rating of the MET-42-T?

The MET-42-T has an insulation voltage rating of 1000 Vrms.

Does the MET-42-T feature magnetic shielding?

No, the MET-42-T is specified as an unshielded transformer.