MET-27

Audio Transformers Overview

The Tamura MET-27 is a through-hole audio transformer designed for data and audio coupling applications. It features a primary impedance of 1kCT and a secondary impedance of 600CT, with a turns ratio of 1.29:1. The device operates within a frequency range of 300Hz to 100kHz, maintaining a response of ±2dB. Electrical specifications include a primary DC resistance of 95 ohms and a secondary DC resistance of 85 ohms. It supports an isolation voltage of 500VRMS at 30 seconds and handles a power level of 50mW. The component is housed in a PC pin through-hole package measuring 10.40mm x 7.87mm x 11.80mm.

Audio Transformers Feature Summary

• Provides balanced audio signal coupling with center-tapped windings for impedance matching between 1kΩ and 600Ω circuits.
• Ensures electrical safety and circuit separation through 500VRMS isolation capability.
• Maintains consistent signal fidelity across the specified audio bandwidth with minimal frequency deviation.

Audio Transformers Applications

• Audio signal transmission in professional communication systems
• Impedance matching in telephone and telecommunication equipment
• Balanced line interfacing in audio processing units

Audio Transformers Procurement Notes

Verify the specific ordering suffix to confirm packaging type, as standard packaging may vary by distributor. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the through-hole footprint dimensions align with your PCB design constraints before finalizing procurement.

Audio Transformers Selection Notes

Select this component when a 1kCT to 600CT impedance transformation is required for balanced audio lines. Consider the 300Hz lower frequency limit if low-frequency response is critical. The through-hole mounting style dictates mechanical integration methods compared to surface-mount alternatives.

Audio Transformers Part Context

The MET-27 belongs to Tamura's MET series of audio transformers, which are engineered for reliable performance in telecommunications and audio infrastructure. These components are widely used in environments requiring robust signal integrity and galvanic isolation between source and load circuits.

Audio Transformers Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model. Cross-reference impedance ratios and physical dimensions when evaluating alternative suppliers or generic equivalents.