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Product Detailed Parameters
- Description：CMC 400MA 2LN 90 OHM SMD
- Series：SRF2012A
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：-
- Number of Lines：2
- Current Rating (Max)：400mA
- DC Resistance (DCR) (Max)：300mOhm
- Voltage Rating - DC：50V
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 125°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.079" L x 0.047" W (2.00mm x 1.20mm)
- Height (Max)：0.055" (1.40mm)
- Package / Case：Horizontal, 4 PC Pad
- Inductance @ Frequency：-
- Impedance @ Frequency：90 Ohms @ 100 MHz
- Qualification：-
- Grade：-
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Overview
The Bourns SRF2012-900YA is a surface-mount common mode choke designed for high-frequency noise suppression. It features a 90 Ohm impedance at 100 MHz and supports a maximum DC current of 400 mA. The component exhibits a low DC resistance of 300 mOhm, ensuring minimal signal loss in power or data lines. Housed in a compact 2x1.2 mm SMD package, it utilizes a wirewound construction with a ferrite core to effectively attenuate electromagnetic interference.
Feature Summary
- Provides effective attenuation of common mode noise signals in high-frequency circuits
- Compact surface-mount footprint suitable for space-constrained PCB layouts
- Low DC resistance minimizes voltage drop and power dissipation during operation
Applications
- High-speed data line protection
- USB interface filtering
- HDMI signal integrity enhancement
Procurement Notes
Verify the specific suffix 'YA' against the manufacturer's latest datasheet to confirm impedance tolerance and packaging specifications. Ensure the ordering quantity matches the standard reel size defined by Bourns Electronic Solutions. Cross-reference the part number with authorized distributors to confirm authenticity and traceability before finalizing procurement.
Selection Notes
Select this component when circuit design requires a 90 Ohm impedance at 100 MHz for noise suppression. The 400 mA current rating must align with the operational load of the protected lines. The 2x1.2 mm package dimensions should be validated against the available board space and soldering pad layout constraints.
Part Context
This component belongs to the SRF2012A series of common mode chokes from Bourns. The series offers various impedance values within the same compact form factor, allowing designers to customize noise filtering characteristics without altering the physical PCB footprint requirements for different product variants.
Replacement Considerations
Direct substitutes within the SRF2012A series include parts with identical 2x1.2 mm packages but differing impedance ratings, such as the SRF2012-600YA or SRF2012-1200YA. Verify that the alternative part's current rating and DC resistance meet the original circuit requirements.
