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Product Detailed Parameters
- Description：FERRITE BEAD 31 OHM 1206 1LN
- Series：WE-CBF
- Mfr：Würth Elektronik
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：1
- Impedance @ Frequency：31 Ohms @ 100 MHz
- Current Rating (Max)：3A
- DC Resistance (DCR) (Max)：40mOhm
- Ratings：AEC-Q200
- Operating Temperature：-55°C ~ 125°C
- Package / Case：1206 (3216 Metric)
- Mounting Type：Surface Mount
- Height (Max)：0.051" (1.30mm)
- Size / Dimension：0.126" L x 0.063" W (3.20mm x 1.60mm)
- Features：-
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Overview
The Würth Elektronik 742792112 is a surface-mount ferrite bead from the WE-CBF series, designed for high-speed EMI suppression. It features a 1206 (3216 metric) package with dimensions of 3.2 mm length, 1.6 mm width, and 1.1 mm height. The component provides an impedance of 31 Ohms at 100 MHz and supports a maximum DC current of 2 A. Its maximum DC resistance is 0.04 Ohms with a 25% tolerance. It operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification.
Feature Summary
- High-speed EMI suppression capability for signal lines
- AEC-Q200 automotive qualification for reliability
- Compact 1206 surface-mount footprint
Applications
- Automotive electronic systems
- High-speed data line filtering
- General EMI suppression in compact circuits
Procurement Notes
Verify the specific impedance value and current rating against the official datasheet before integration, as distributor listings may vary. Confirm the AEC-Q200 status is required for your application. Check for obsolescence notices or PCNs that might affect long-term availability. Ensure the 1206 package size fits your PCB layout constraints.
Selection Notes
Select this component when a low-profile, automotive-grade ferrite bead is needed for high-current signal lines. The 2 A rating suits power-sensitive applications better than lower-rated alternatives. The 31 Ohm impedance at 100 MHz targets specific noise frequencies. Compare with other WE-CBF variants if different impedance or current characteristics are required.
Part Context
This part belongs to the WE-CBF series of shielded ferrite beads from Würth Elektronik. These components are engineered for effective electromagnetic interference reduction in dense circuit boards. The series offers various impedance and current ratings to suit diverse filtering needs across industrial and automotive sectors.
Replacement Considerations
Check for direct substitutes within the WE-CBF series with similar impedance and current ratings. Verify package compatibility and thermal performance. Consult manufacturer cross-reference lists for approved replacements.
