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Product Detailed Parameters
- Description：CMC 137UH 2LN TH
- Series：-
- Mfr：Traco Power
- Package：Bag
- Filter Type：-
- Number of Lines：2
- Current Rating (Max)：-
- DC Resistance (DCR) (Max)：24mOhm
- Voltage Rating - DC：500V
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 105°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.335" L x 0.295" W (8.50mm x 7.50mm)
- Height (Max)：0.413" (10.50mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：137 µH @ 10 kHz
- Impedance @ Frequency：-
- Qualification：-
- Grade：-
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Overview
The TCK-127 is a two-line common mode choke manufactured by Traco Power, designed for through-hole mounting. It features an inductance of 137 µH measured at 10 kHz and a maximum DC resistance (DCR) of 24 mΩ. The component operates within a temperature range of -40°C to +105°C and has a voltage rating of 500V. Its physical dimensions are 8.50 mm in length, 7.50 mm in width, with a maximum height of 10.50 mm.
Feature Summary
- Provides common mode noise suppression for differential signal lines
- Constructed for reliable through-hole PCB integration
- Engineered for high-temperature operational environments
Applications
- Electromagnetic compatibility filtering for DC/DC converters
- Signal line protection in industrial electronic equipment
- Noise reduction in power supply input stages
Procurement Notes
Verify the specific part number against official Traco Power documentation to ensure correct specifications. Confirm that the required inductance and current ratings align with your circuit design requirements before procurement. Check for any updated compliance certifications or environmental declarations relevant to your region.
Selection Notes
Select this component when through-hole mounting is preferred over surface mount alternatives. Ensure the 137 µH inductance value meets the specific frequency attenuation requirements of your application. Verify that the 24 mΩ DCR does not introduce excessive voltage drop in the target circuit path.
Part Context
This component belongs to the TCK series of common mode chokes from Traco Power. These components are specifically engineered to address electromagnetic interference issues in power electronics. The series offers various inductance values to suit different filtering needs across multiple industrial applications.
Replacement Considerations
Consult official Traco Power documentation for verified substitute part numbers. Ensure any replacement maintains identical pin configuration, inductance tolerance, and thermal performance characteristics.
