MET-60

Overview

The Tamura MET-60 is a through-hole audio transformer designed for data and voice coupling applications. It features a primary impedance of 135 ohms and a center-tapped secondary impedance of 135CT ohms, maintaining a 1:1 turns ratio. The component operates within a frequency range of 300Hz to 100kHz with a response tolerance of ±2dB. Electrical specifications include a primary DC resistance of 10.5 ohms and a secondary DC resistance of 10.8 ohms. It supports a power level of 50mW and provides isolation voltage of 1500VRMS at 1 minute. The unit functions between -20°C and +85°C, with physical dimensions of 10.40mm length, 7.87mm width, and 11.80mm height.

Feature Summary

• Provides balanced-to-unbalanced or unbalanced-to-balanced signal conversion via center-tapped secondary winding
• Ensures electrical isolation between circuits with specified high-voltage insulation rating
• Maintains flat frequency response suitable for voice and data transmission bands

Applications

• Telecommunication equipment signal coupling
• Audio interface circuitry in communication systems
• Data line balancing and impedance matching

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current catalog to confirm pin configuration and packaging type. Ensure the selected variant matches the required center-tap availability and insulation standards. Cross-reference the datasheet revision date to confirm compliance with current RoHS directives and material declarations before finalizing procurement orders.

Selection Notes

Select this component when a 1:1 impedance transformation is required between 135-ohm lines. Consider the thermal operating range and physical footprint constraints for PCB layout. Evaluate the isolation voltage requirements against system safety standards. Confirm that the center-tapped secondary configuration aligns with the circuit topology needs for balanced signal handling.

Part Context

The MET-60 belongs to the MET series of ultra-wideband audio transformers manufactured by Tamura. This series is engineered for reliable performance in voice and data communication environments. The components are characterized by stable electrical parameters across the specified frequency band, ensuring consistent signal integrity in professional audio and telecommunications infrastructure applications.

Replacement Considerations

Direct substitutes within the same series include MET-32 and MET-59, though impedance values differ. Verify compatibility with MET-60-NDL and MET-60-NDR variants if different packaging or lead configurations are required. Always validate pinout and electrical specs before substitution.