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Product Detailed Parameters
- Description：AUDIO XFMR 150 / 12 TH
- Series：MET
- Mfr：Tamura
- Package：Tube
- 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：3.54:1
- Impedance - Primary (Ohms)：150
- Impedance - Secondary (Ohms)：12
- DC Resistance (DCR) - Primary：20Ohm
- DC Resistance (DCR) - Secondary：2.5Ohm
- Transformer Type：Data/Voice Coupling
- Frequency Range：300Hz ~ 100kHz
- Frequency Response：±2dB
- Voltage - Isolation：500VRMS @ 30 Seconds
- Insertion Loss：-
- Return Loss：-
- Power Level：50mW
- Operating Temperature：-20°C ~ 85°C
- Approval Agency：-
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Overview
The Tamura MET-42 is an audio and signal transformer designed for through-hole mounting. It features a primary impedance of 150 ohms and a secondary impedance of 12 ohms, resulting in a turns ratio of 3.54:1. The device operates within a frequency range of 300Hz to 100kHz with a frequency response of ±2dB. It supports an isolation voltage of 500VRMS at 30 seconds and handles a power level of 50mW. Physical dimensions are 10.40mm in length, 7.87mm in width, and a maximum height of 11.80mm. Operating temperatures range from -20°C to +85°C.
Feature Summary
- Provides impedance matching between 150-ohm primary and 12-ohm secondary circuits for audio applications.
- Ensures electrical isolation with 500VRMS insulation voltage capability.
- Maintains stable performance across a wide temperature range suitable for industrial environments.
Applications
- Audio signal coupling in communication equipment
- Impedance matching in line driver circuits
- Signal transformation in broadcast systems
Procurement Notes
Verify the specific datasheet version to confirm RoHS compliance status and exact isolation ratings. Ensure the procurement matches the through-hole PC pin termination style. Confirm that the 50mW power rating aligns with the application requirements before finalizing orders.
Selection Notes
Select this component when a 150-to-12 ohm impedance transformation is required for audio frequencies. Consider the physical size constraints as it fits standard through-hole layouts. Verify thermal management needs against the -20°C to +85°C operating range.
Part Context
The MET-42 belongs to the Tamura MET series of ultra-wideband audio transformers. This series is characterized by compact through-hole packages designed for reliable signal transmission in professional audio and data coupling scenarios.
Replacement Considerations
No direct public substitute part numbers are confirmed in the provided documentation. Cross-reference with other MET series models only if impedance ratios match specific circuit requirements.
