MET-45

Audio Transformers Overview

The MET-45 is a general-purpose audio transformer manufactured by Tamura, designed for through-hole mounting. It features a primary impedance of 10 kOhms and a secondary configuration offering dual outputs of 10 kOhm and 2.5 kOhm split windings. The device supports an impedance ratio of 1:0.5:0.5 and operates within a frequency range of 300 Hz to 20 kHz. Key electrical specifications include a maximum power handling of 75 mW at 300 Hz and an isolation voltage rating of 500 Vrms. Primary DC resistance is approximately 1.3 kOhm, with secondary DC resistances around 735 Ohm and 850 Ohm.

Audio Transformers Feature Summary

• Provides signal coupling with encapsulated construction for environmental protection
• Offers versatile secondary winding options including center-tapped configurations
• Ensures electrical safety with high isolation voltage capability

Audio Transformers Applications

• Audio signal coupling in professional sound equipment
• Impedance matching in microphone preamplifier circuits
• Balanced-to-unbalanced signal conversion in audio interfaces

Audio Transformers Procurement Notes

Verify the specific datasheet version to confirm exact pinout and mechanical dimensions before integration. Ensure the selected variant matches the required secondary impedance configuration (10k/2.5k split). Confirm that the through-hole package style aligns with the target PCB footprint design constraints.

Audio Transformers Selection Notes

Select this component when a robust audio transformer with defined impedance ratios is required. Consider the 300 Hz lower frequency limit for bass response requirements. Evaluate the physical height constraint of 11.8 mm against available board space. Verify compatibility with operating frequencies up to 20 kHz for full audio bandwidth coverage.

Audio Transformers Part Context

This component belongs to Tamura's line of audio and signal transformers, which are widely used in electronic circuit design for isolation and impedance transformation. The MET series specifically targets applications requiring reliable performance in audio signal paths, providing a balance between electrical performance and mechanical durability for standard manufacturing processes.

Audio Transformers Replacement Considerations

Consult official substitution guides or manufacturer cross-reference lists for verified equivalent part numbers. Do not assume functional interchangeability based solely on similar impedance values without verifying pinout and mechanical compatibility.