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Product Detailed Parameters
- Description：CMC 300MA 2LN 40 KOHM TH
- Series：TLF9
- Mfr：Taiyo Yuden
- Package：Bulk
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：300mA
- DC Resistance (DCR) (Max)：3Ohm
- Voltage Rating - DC：50V
- Voltage Rating - AC：-
- Operating Temperature：-25°C ~ 105°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Through Hole
- Size / Dimension：0.669" L x 0.433" W (17.00mm x 11.00mm)
- Height (Max)：0.630" (16.00mm)
- Package / Case：Vertical, 4 PC Pin
- Inductance @ Frequency：-
- Impedance @ Frequency：40 kOhms @ 700 kHz
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Overview
The TLF9UB802WK1 is a leaded common mode choke coil designed for DC and signal lines. It features an inductance of 8 mH and an impedance of 40 kOhms at standard test frequencies. The component supports a maximum DC current of 300 mA with a maximum DC resistance of 3 Ohms. It operates within a temperature range of -25°C to +105°C. The physical dimensions are 17 mm in length, 15 mm in width, and 12 mm in height. The device utilizes a radial termination style and is packaged in bulk quantities.
Feature Summary
- Provides common mode noise suppression for DC and signal lines
- Utilizes leaded radial construction for through-hole mounting
- Engineered for high impedance performance in EMI filtering applications
Applications
- DC power line filtering
- Signal line noise suppression
- General electronic equipment EMI mitigation
Procurement Notes
Verify the exact part number suffix, as sources indicate potential variations such as TLF9UBH802WK1 or TLF9UB802WK1. Confirm lifecycle status, as some records list this item as obsolete or end-of-life. Ensure compatibility with existing PCB footprints due to specific radial lead spacing and housing dimensions. Check for RoHS compliance documentation if required for your manufacturing standards.
Selection Notes
Select this component when through-hole mounting is preferred for mechanical stability in high-noise environments. The 8 mH inductance offers significant attenuation for common mode interference. Consider the 300 mA current rating to ensure adequate headroom for the target circuit's operational load. Verify that the 40 kOhm impedance meets the specific frequency requirements of the noise spectrum being filtered.
Part Context
This component belongs to Taiyo Yuden's lineup of leaded common mode filters intended for general electronic equipment. It serves as a passive electromagnetic interference suppression device. The product line focuses on robust filtering solutions for industrial and consumer applications where surface-mount options may not provide sufficient mechanical durability or thermal mass.
Replacement Considerations
Publicly confirmed substitute part numbers were not identified in the provided source material. Consult manufacturer catalogs for equivalent leaded common mode chokes with matching 8 mH inductance and 300 mA current ratings.
