MET-03

Audio Transformers Overview

The Tamura MET-03 is a through-hole audio transformer designed for data and voice coupling applications. It features a primary impedance of 50kCT ohms and a secondary impedance of 1kCT ohms, resulting in a turns ratio of 7.07:1. The component operates within a frequency range of 300Hz to 100kHz with a frequency response tolerance of ±2dB. Electrical isolation is rated at 500VRMS for 30 seconds. DC resistance measures 3.8 kOhm on the primary side and 105 Ohms on the secondary side. The unit supports a power level of 25mW and functions within a temperature range of -20°C to 85°C.

Audio Transformers Feature Summary

• Provides electrical isolation between circuits via audio transformer technology
• Supports signal coupling for data and voice transmission applications
• Utilizes through-hole mounting for standard PCB integration

Audio Transformers Applications

• Audio signal processing circuits
• Voice communication equipment
• Data line coupling interfaces

Audio Transformers Procurement Notes

Verify the specific manufacturer part number against official datasheets to ensure compatibility with circuit requirements. Confirm that the through-hole package dimensions align with the target printed circuit board layout. Check for RoHS compliance status if environmental regulations apply to the final assembly. Ensure the operating temperature range meets the design specifications for the intended environment.

Audio Transformers Selection Notes

Select this component when a 50kCT to 1kCT impedance transformation is required for audio or data signals. Consider the physical size constraints as the unit utilizes a radial through-hole package. Evaluate the frequency response characteristics to ensure they match the signal bandwidth needs. Verify that the isolation voltage rating satisfies safety requirements for the application.

Audio Transformers Part Context

The MET-03 belongs to the MET series of audio transformers manufactured by Tamura. This series includes various models tailored for different impedance ratios and coupling requirements. The MET-03 specifically addresses applications requiring high primary impedance matching with lower secondary impedance loads.

Audio Transformers Replacement Considerations

The SP-5 from Triad Magnetics is documented as a similar substitute part number.