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Product Detailed Parameters
- Description：FERRITE BEAD 300 OHM 0805 4LN
- Series：MH2029
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Filter Type：Power, Signal Line
- Number of Lines：1
- Impedance @ Frequency：300 Ohms @ 100 MHz
- Current Rating (Max)：1A
- DC Resistance (DCR) (Max)：200mOhm
- Ratings：-
- Operating Temperature：-55°C ~ 125°C
- Package / Case：0805 (2012 Metric)
- Mounting Type：Surface Mount
- Height (Max)：0.043" (1.10mm)
- Size / Dimension：0.079" L x 0.047" W (2.00mm x 1.20mm)
- Features：-
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Overview
The MH2029-301Y is a high-current ferrite chip bead manufactured by Bourns Inc. It features an impedance of 300 ohms with a tolerance of ±25% at a test frequency of 100 MHz. The component supports a maximum DC current rating of 1 A and has a maximum DC resistance (DCR) of 200 mΩ. It is housed in an 0805 (2012 Metric) surface-mount package with physical dimensions of 2 mm length, 1.2 mm width, and 0.85 mm height. The device operates within a temperature range of -55°C to +125°C.
Feature Summary
- Designed for high-current applications requiring effective electromagnetic interference suppression.
- Provides significant impedance at 100 MHz to attenuate high-frequency noise signals.
- Utilizes a compact 0805 surface-mount footprint for efficient PCB space utilization.
Applications
- Power supply output filtering
- Data line noise suppression
- General-purpose EMI suppression in electronic circuits
Procurement Notes
Verify the specific suffix 'Y' against the manufacturer's official datasheet to confirm packaging details and compliance status. Ensure the selected variant matches the required impedance tolerance and current rating for the target circuit design. Cross-reference the part number with authorized distributors to confirm availability and authenticity before procurement.
Selection Notes
Select this component when a 300-ohm impedance at 100 MHz is required for noise suppression in circuits carrying up to 1 ampere of DC current. The 0805 package size is suitable for standard surface-mount assembly processes. Consider the 200 mΩ DCR limit to ensure minimal voltage drop and power loss in the application path.
Part Context
This component belongs to the MH series of high-current chip ferrite beads from Bourns. These components are engineered to provide reliable EMI suppression while handling substantial DC currents without saturation. The series is designed for use in various consumer, industrial, and automotive electronics where compact noise filtering is essential.
Replacement Considerations
Consult the official Bourns datasheet for direct cross-references. Verify that any substitute part maintains the 300-ohm impedance at 100 MHz, 1A current rating, and compatible 0805 footprint to ensure electrical and mechanical compatibility.
FAQ
What is the test frequency for the specified impedance?
The impedance of 300 ohms is measured at a test frequency of 100 MHz.
What is the maximum DC current rating?
The maximum DC current rating is 1 A.
