MH4516-800Y Ferrite Bead 80 Ohm 1806 Equivalent & Substitute Parts

Part Overview

The MH4516-800Y is a 1806 (4516 Metric) surface mount ferrite bead manufactured by Bourns Inc., rated for 80 Ohms impedance at 100 MHz with a maximum current rating of 3A and 50mOhm DC resistance. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part functions as a power and signal line filter element in electromagnetic interference (EMI) suppression applications across industrial and commercial electronics.

Key Parameters

Parameter	Value
Impedance @ 100 MHz	80 Ohms
Current Rating (Max)	3A
DC Resistance (Max)	50mOhm
Package / Case	1806 (4516 Metric)
Operating Temperature Range	-55°C ~ 125°C
Mounting Type	Surface Mount
Number of Lines	1
Filter Type	Power, Signal Line

Substitute Part Grouping Explanation

Substitution eligibility for the MH4516-800Y is determined by the following criteria:

Primary Equivalence Criteria (Mandatory Match):

Package / Case: 1806 (4516 Metric)
Impedance @ 100 MHz: 80 Ohms
Number of Lines: 1
Operating Temperature Range: -55°C ~ 125°C
Mounting Type: Surface Mount

Secondary Compatibility Criteria (Allowable Variance):

Current Rating: Equal to or greater than 3A
DC Resistance: Equal to or less than 50mOhm (lower DCR preferred for reduced power dissipation)
Filter Type: Power Line or Signal Line (both acceptable for general EMI suppression)
Product Status: Active status preferred for long-term availability

Near-Equivalent Parts (Parameter Variance): Parts with impedance values within ±10% of 80 Ohms (72–88 Ohms range) and matching package dimensions are classified as near-equivalents. These parts maintain functional compatibility in applications where impedance tolerance permits.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	Current Rating (Max)	DC Resistance (Max)	Filter Type	Product Status	Packaging
MH4516-800Y	Bourns Inc.	80 Ohms	3A	50mOhm	Power, Signal Line	Obsolete	-
FBH451616T-800Y-S	Cal-Chip Electronics, Inc.	80 Ohms	3A	40mOhm	Power Line	Active	Tape & Reel (TR)
2518068007Y3	Fair-Rite Products Corp.	80 Ohms	3A	40mOhm	Signal Line	Active	Tape & Reel (TR)
742792411	Würth Elektronik	80 Ohms	3A	40mOhm	Signal Line	Active	Tape & Reel (TR)
BLM41PG750SN1L	Murata Electronics	75 Ohms	4.6A	15mOhm	Power Line	Active	Cut Tape (CT) & Digi-Reel®
FB08YTYH800	Stackpole Electronics Inc	80 Ohms	4A	25mOhm	Power Line	Active	Tape & Reel (TR)
FBH451616T-750Y-S	Cal-Chip Electronics, Inc.	75 Ohms	3A	40mOhm	Power Line	Active	Tape & Reel (TR)
FBU451616T-750Y-S	Cal-Chip Electronics, Inc.	75 Ohms	6A	8mOhm	Power Line	Active	Tape & Reel (TR)
WLBD4516HCU720PH	Walsin Technology Corporation	72 Ohms	6A	15mOhm	Power Line	Active	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Equivalents (80 Ohm @ 100 MHz):

FBH451616T-800Y-S, 2518068007Y3, 742792411, and FB08YTYH800 are direct functional equivalents with identical impedance specifications. All are active products with RoHS3 compliance. FBH451616T-800Y-S and FB08YTYH800 offer reduced DC resistance (40mOhm and 25mOhm respectively) compared to the original 50mOhm specification, providing improved thermal performance. FB08YTYH800 provides the highest current rating at 4A, offering additional design margin.

Near-Equivalent Substitutes (75–72 Ohm @ 100 MHz):

BLM41PG750SN1L, FBH451616T-750Y-S, FBU451616T-750Y-S, and WLBD4516HCU720PH operate within ±10% impedance tolerance of the original specification. These parts are suitable for applications where impedance variance is acceptable. BLM41PG750SN1L and FBU451616T-750Y-S feature significantly lower DC resistance (15mOhm and 8mOhm) and higher current ratings (4.6A and 6A), making them preferable for high-current or low-loss applications. All near-equivalent parts maintain active product status and full compliance certifications.

Compliance & Availability:

All substitute parts listed are RoHS3 compliant and REACH unaffected. FBH451616T-800Y-S, 2518068007Y3, and 742792411 maintain the highest inventory levels (52,937, 7,641, and 4,246 units respectively), ensuring procurement reliability. Packaging formats include Tape & Reel (TR) and Cut Tape (CT) options to accommodate various assembly workflows.

Frequently Asked Questions (FAQ)

Q: Can FBH451616T-800Y-S directly replace MH4516-800Y without circuit modification?

A: Yes. FBH451616T-800Y-S matches all primary equivalence criteria: 80 Ohm impedance at 100 MHz, 1806 package, 3A current rating, and identical operating temperature range. The reduced DC resistance (40mOhm vs. 50mOhm) is a performance improvement with no negative impact on circuit function.

Q: What is the difference between "Power Line" and "Signal Line" filter types?

A: Filter type designation indicates the primary application context. Power Line ferrite beads are optimized for power distribution circuits, while Signal Line beads are optimized for data and control signal paths. Both types function identically in EMI suppression at the specified impedance. Selection between them depends on circuit topology rather than electrical performance.

Q: Are 75 Ohm parts (BLM41PG750SN1L, FBH451616T-750Y-S) acceptable substitutes?

A: Yes, for applications where ±10% impedance tolerance is acceptable. The 75 Ohm impedance represents a 6.25% reduction from the 80 Ohm specification. Circuit simulation or empirical testing is necessary to confirm EMI suppression performance in the specific application. These parts offer superior current handling and lower DC resistance, making them preferable for high-current designs.

Q: What packaging options are available?

A: Substitute parts are available in Tape & Reel (TR) format for automated assembly and Cut Tape (CT) format for manual or mixed-mode assembly. FBH451616T-800Y-S, 2518068007Y3, 742792411, FB08YTYH800, and all Cal-Chip and Walsin variants use Tape & Reel packaging. BLM41PG750SN1L uses Cut Tape & Digi-Reel® packaging. Packaging selection does not affect electrical performance.

Q: Which substitute offers the best thermal performance?

A: FBU451616T-750Y-S provides the lowest DC resistance at 8mOhm, resulting in minimal power dissipation and superior thermal performance. BLM41PG750SN1L (15mOhm) and WLBD4516HCU720PH (15mOhm) are secondary choices. For applications requiring the original 80 Ohm impedance with improved thermal characteristics, FB08YTYH800 (25mOhm) is recommended.

Q: Is the MH4516-800Y obsolete status a concern for new designs?

A: Yes. The obsolete status indicates Bourns Inc. has discontinued production. All recommended substitutes maintain active product status with established supply chains. For new designs, direct equivalents (FBH451616T-800Y-S, 2518068007Y3, 742792411) or near-equivalents with superior specifications (BLM41PG750SN1L, FBU451616T-750Y-S) are recommended for long-term design support and procurement continuity.

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