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Product Detailed Parameters
- Description：CMC 470UH 1.1A 2LN 1 KOHM SMD
- Series：SRF0905
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：2
- Current Rating (Max)：1.1A
- DC Resistance (DCR) (Max)：140mOhm
- Voltage Rating - DC：80V
- Voltage Rating - AC：-
- Operating Temperature：-40°C ~ 105°C
- Ratings：-
- Approval Agency：-
- Features：-
- Mounting Type：Surface Mount
- Size / Dimension：0.362" L x 0.236" W (9.20mm x 6.00mm)
- Height (Max)：0.209" (5.30mm)
- Package / Case：Horizontal, 4 PC Pad
- Inductance @ Frequency：470 µH @ 100 kHz
- Impedance @ Frequency：1 kOhms @ 2 MHz
- Qualification：-
- Grade：-
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Overview
The Bourns SRF0905-471Y is a shielded surface mount common mode choke featuring a ferrite core and LCP base. It provides an inductance of 470 µH with a tolerance of ±50% and supports a DC current rating of 1.1 A. The component exhibits a maximum DC resistance of 0.14 Ω and offers impedance values of 1 kΩ at 2 MHz and 4 kΩ at 20 MHz. Designed for EMI suppression, it operates within a temperature range of -40°C to +125°C and utilizes enamelled copper wire with tin-plated terminals.
Feature Summary
- Shielded surface mount construction minimizes magnetic interference
- Ferrite core design ensures effective high-frequency noise attenuation
- LCP substrate provides thermal stability and mechanical robustness
Applications
- EMI filtering in data communication lines
- Noise suppression in USB interface circuits
- Signal integrity protection in industrial control systems
Procurement Notes
Verify the specific ordering suffix 'Y' against the manufacturer's latest datasheet to confirm packaging configuration and terminal finish specifications. Ensure that the selected variant matches the required impedance characteristics and current ratings for the target application environment. Cross-reference the part number with official distributor catalogs to validate availability and authenticity before finalizing procurement orders.
Selection Notes
Select this component when space-constrained designs require shielded common mode chokes with moderate current handling capabilities. The 0905 package size suits applications needing compact footprints while maintaining effective noise filtration. Consider the 1.1 A current rating and 470 µH inductance for balancing signal integrity with power line noise reduction in sensitive electronic interfaces.
Part Context
This component belongs to the Bourns SRF0905 series of shielded surface mount common mode chokes. The series utilizes ferrite cores and LCP bases to deliver reliable EMI suppression in compact form factors. These filters are engineered for high-frequency noise attenuation in modern electronic devices requiring efficient signal processing and reduced electromagnetic interference.
Replacement Considerations
Consult the official Bourns replacement guide for direct equivalents. Verify compatibility regarding inductance, current rating, and physical dimensions before substituting.
