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Product Detailed Parameters
- Description：CMC 310MA 2LN 220 OHM SMD
- Series：SRF2012
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：-
- Number of Lines：2
- Current Rating (Max)：310mA
- DC Resistance (DCR) (Max)：350mOhm
- Voltage Rating - DC：50V
- Voltage Rating - AC：-
- Operating Temperature：-55°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.081" L x 0.049" W (2.05mm x 1.25mm)
- Height (Max)：0.057" (1.45mm)
- Package / Case：Horizontal, 4 PC Pad
- Inductance @ Frequency：-
- Impedance @ Frequency：220 Ohms @ 100 MHz
- Qualification：-
- Grade：-
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Overview
The Bourns SRF2012-221Y is a surface-mount common mode choke designed for noise suppression in high-speed data lines. It features an impedance of 220 Ohms at 100 MHz and supports a maximum DC current of 310 mA. The component has a maximum DC resistance of 350 mOhms and operates within a temperature range of -40°C to +105°C. Housed in a compact 0805 (2012 metric) package, it provides effective common-mode filtering for signal integrity.
Feature Summary
- Provides common-mode noise suppression for high-speed digital signals
- Compact surface-mount design suitable for space-constrained PCB layouts
- Optimized impedance characteristics for frequencies around 100 MHz
Applications
- High-speed data line filtering
- USB interface protection
- HDMI signal conditioning
- General purpose EMI suppression in consumer electronics
Procurement Notes
Verify the specific suffix 'Y' against the manufacturer's latest documentation to confirm lead-free status and RoHS compliance. Confirm that the part number matches the exact impedance and current ratings required for your circuit design, as variations may exist within the series. Check for any obsolete status notifications from Bourns Inc. before finalizing procurement plans.
Selection Notes
Select this component when a low-profile solution is needed for common-mode interference on differential pairs. Ensure the operating current does not exceed 310 mA to prevent saturation. The 220 Ohm impedance at 100 MHz makes it suitable for USB 2.0 or similar bandwidth applications. Verify thermal management requirements given the 350 mOhms DCR.
Part Context
This component belongs to the SRF2012A series of common mode chip inductors from Bourns. These devices are engineered for suppressing electromagnetic interference in compact electronic assemblies. The series offers various impedance values tailored for different frequency ranges while maintaining a consistent small footprint for automated assembly.
Replacement Considerations
Check for direct substitutes within the SRF2012 series with matching 220 Ohm impedance and 310 mA rating. Cross-reference with other manufacturers offering 0805 common mode chokes with equivalent electrical specifications. Ensure pinout compatibility if replacing in existing designs.
