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Product Detailed Parameters
- Description：FERRITE BEAD 40 OHM 0805 1LN
- Series：MMZ
- Mfr：TDK Corporation
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Signal Line
- Number of Lines：1
- Impedance @ Frequency：40 Ohms @ 100 MHz
- Current Rating (Max)：1A
- DC Resistance (DCR) (Max)：100mOhm
- Ratings：AEC-Q200
- Operating Temperature：-55°C ~ 125°C
- Package / Case：0805 (2012 Metric)
- Mounting Type：Surface Mount
- Height (Max)：0.041" (1.05mm)
- Size / Dimension：0.079" L x 0.049" W (2.00mm x 1.25mm)
- Features：-
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Overview
The TDK MMZ2012S400ATD25 is a single-line ferrite bead chip designed for signal line filtering in automotive applications. It features a 0805 (2012 metric) surface-mount package with dimensions of 2.00mm length, 1.25mm width, and a maximum height of 0.85mm. The component provides an impedance of 40 Ohms at 100 MHz and supports a rated current of 1A. Its maximum DC resistance is 100 mOhms. It operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification.
Feature Summary
- Automotive-grade reliability certified under the AEC-Q200 standard for harsh environment durability.
- Multi-layer ferrite construction optimized for high-frequency noise suppression on single signal lines.
- Compact 0805 footprint enabling dense surface-mount placement on printed circuit boards.
Applications
- Automotive electronic systems requiring EMI suppression
- Signal line filtering in vehicle control units
- High-frequency noise attenuation in compact automotive modules
Procurement Notes
Verify the specific suffix TD25 against official TDK documentation to confirm package and termination specifications. Confirm current availability status as distribution data may vary. Ensure the selected variant meets the required AEC-Q200 automotive qualification standards for your specific application environment.
Selection Notes
Select this component when a 40 Ohm impedance at 100 MHz is required for signal integrity in automotive designs. The 1A current rating suits moderate power signal lines. The 0805 size balances board space constraints with thermal performance. Verify that the 100 mOhm DCR aligns with voltage drop requirements in the target circuit design.
Part Context
This part belongs to the TDK MMZ series of multi-layer ferrite beads specifically engineered for automotive electronics. The series is characterized by its ability to suppress electromagnetic interference while maintaining signal fidelity. The MMZ2012 designation indicates the 0805 case size, distinguishing it from smaller or larger variants within the broader product family.
Replacement Considerations
Publicly confirmed substitutes include MMZ1608S121ATD25 and MH2029-121Y. Verify electrical compatibility and physical footprint before substitution. Note that MMZ2012S121ATD25 is listed as obsolete with MMZ1608S121ATD25 as a potential alternative.
