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Product Detailed Parameters
- Description：AUDIO XFMR 10K / 125 TH
- Series：MET
- Mfr：Triad Magnetics
- Package：Bulk
- Mounting Type：Through Hole
- Size / Dimension：0.409" L x 0.310" W (10.40mm x 7.87mm)
- Height - Seated (Max)：0.465" (11.80mm)
- Termination Style：PC Pin
- Turns Ratio - Primary:Secondary：8.62:1
- Impedance - Primary (Ohms)：10k
- Impedance - Secondary (Ohms)：125
- DC Resistance (DCR) - Primary：1.1kOhm
- DC Resistance (DCR) - Secondary：28Ohm
- Transformer Type：Data/Voice Coupling
- Frequency Range：300Hz ~ 100kHz
- Frequency Response：±2dB
- Voltage - Isolation：1000VRMS @ 1 Second
- Insertion Loss：-
- Return Loss：-
- Power Level：10mW
- Operating Temperature：-20°C ~ 85°C
- Approval Agency：-
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Overview
The MET-50-T is a miniature encapsulated audio coupling transformer manufactured by Triad Magnetics. It features a primary impedance of 10,000 ohms and a secondary impedance of 125 ohms, providing an 8.62:1 turns ratio. The component operates within a frequency range of 300 Hz to 100 kHz and supports a maximum DC current of 3 mA with a power rating of 10 mW. Designed for through-hole mounting, it functions reliably across an operating temperature range of -20°C to +85°C.
Feature Summary
- Miniature encapsulated construction for compact integration
- Impedance matching between high and low resistance circuits
- Through-hole pin terminal configuration
Applications
- Audio signal coupling in communication equipment
- Impedance matching in line-level audio circuits
- Signal isolation in industrial control systems
Procurement Notes
Verify the specific datasheet version to confirm package dimensions and pinout compatibility with your PCB layout. Ensure that the thermal environment does not exceed the specified maximum operating temperature of +85°C during continuous operation. Confirm that the primary DC resistance and maximum current limits align with your circuit design requirements before finalizing procurement.
Selection Notes
Select this component when a step-down impedance transformation from 10k ohms to 125 ohms is required for audio applications. Consider the 10 mW power rating and 3 mA maximum DC current limits to ensure safe operation within your signal chain. The through-hole format dictates mechanical assembly methods compared to surface-mount alternatives.
Part Context
This part belongs to the MET series of miniature encapsulated transformers from Triad Magnetics. These components are designed for general-purpose audio and signal coupling tasks where size constraints are critical. The series offers various impedance ratios to suit different circuit requirements while maintaining consistent physical form factors.
Replacement Considerations
Direct substitutes must match the 10k:125 ohm impedance ratio and 8.62:1 turns ratio. Verify that alternative components support the same 300 Hz to 100 kHz frequency range and through-hole mounting style. Ensure equivalent power handling and temperature ratings are maintained.
