Z0805C220ASMST Ferrite Bead 22 Ohm 0805 Equivalent & Substitute Parts

Part Overview

The Z0805C220ASMST is a 22 Ohm ferrite bead manufactured by KEMET in the 0805 (2012 Metric) surface mount package. This single-line signal ferrite bead is rated for 1.2A maximum current with 50mOhm DC resistance and operates across the temperature range of -55°C to 125°C. The part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

Z0805C220ASMST

KEMETIn Stock: 968Z0805C220ASMST Datasheet

Current PartRFQ

742792021

Würth ElektronikIn Stock: 68454742792021 Datasheet

SimilarRFQ

ACML-0805-190-T

Abracon LLCIn Stock: 858ACML-0805-190-T Datasheet

Parametric EquivalentRFQ

ACML-0805-260-T

Abracon LLCIn Stock: 763ACML-0805-260-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Ferrite bead substitution is determined by the following critical parameters: package type (0805 surface mount), number of signal lines (1), operating temperature range (-55°C to 125°C), impedance value at 100 MHz, current rating capacity, and DC resistance. Substitute parts must maintain compatibility with the 0805 (2012 Metric) footprint and support single-line signal filtering applications.

The substitute parts identified fall into two categories:

Direct Equivalent (Same Impedance): The Würth Elektronik 742792021 maintains the identical 22 Ohm impedance @ 100 MHz specification while offering superior current handling (6A versus 1.2A) and lower DC resistance (8mOhm versus 50mOhm). This part is active in production status.

Parametric Equivalents (Similar Impedance Range): The Abracon LLC ACML-0805-190-T (19 Ohms @ 100 MHz) and ACML-0805-260-T (26 Ohms @ 100 MHz) provide impedance values within the ferrite bead filtering spectrum. These parts accommodate applications where impedance tolerance permits deviation from the nominal 22 Ohm specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: The Würth Elektronik 742792021 is the recommended direct replacement for the obsolete Z0805C220ASMST. This part maintains identical impedance specification (22 Ohms @ 100 MHz) while offering enhanced electrical performance through superior current handling capacity (6A) and reduced DC resistance (8mOhm). The part is in active production status with established supply chain availability. All compliance certifications (ROHS3, REACH Unaffected, EAR99) align with the original specification.

Secondary Substitutes: The Abracon LLC ACML-0805-190-T and ACML-0805-260-T provide alternative impedance values within the ferrite bead filtering range. Selection between these parametric equivalents depends on circuit design tolerance for impedance deviation. The ACML-0805-190-T (19 Ohms) offers lower impedance with 2A current capacity, while the ACML-0805-260-T (26 Ohms) provides higher impedance with 1.5A current capacity. Both parts maintain identical package footprint, temperature range, and compliance status.

All substitute parts are compatible with the 0805 (2012 Metric) surface mount footprint and support single-line signal filtering applications across the specified operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the Würth Elektronik 742792021 be used as a direct replacement for the Z0805C220ASMST?

A: Yes. The 742792021 maintains the identical 22 Ohm impedance @ 100 MHz specification and 0805 package footprint. The part offers improved electrical performance with higher current rating (6A versus 1.2A) and lower DC resistance (8mOhm versus 50mOhm). All compliance certifications are equivalent.

Q: What is the difference between the direct equivalent and parametric equivalents?

A: The Würth Elektronik 742792021 is a direct equivalent with matching 22 Ohm impedance. The Abracon ACML-0805-190-T and ACML-0805-260-T are parametric equivalents with impedance values of 19 Ohms and 26 Ohms respectively. Parametric equivalents are suitable when circuit design permits impedance tolerance deviation.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts use the 0805 (2012 Metric) surface mount package. The Würth Elektronik 742792021 has a maximum height of 0.043" (1.10mm) compared to 0.041" (1.05mm) for the original and Abracon parts. This minimal height difference does not affect PCB footprint compatibility.

Q: Do the substitute parts meet the same environmental and compliance requirements?

A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and classified as EAR99. All parts operate across the -55°C to 125°C temperature range with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute part should be selected for applications requiring maximum current handling?

A: The Würth Elektronik 742792021 provides the highest current rating at 6A, compared to 1.2A for the original Z0805C220ASMST, 2A for the ACML-0805-190-T, and 1.5A for the ACML-0805-260-T.

Q: Can parametric equivalents be used interchangeably with the original part?

A: Parametric equivalents can be used when circuit design specifications permit impedance tolerance. The ACML-0805-190-T (19 Ohms) and ACML-0805-260-T (26 Ohms) represent ±13% and ±18% deviation from the nominal 22 Ohm specification respectively. Circuit validation is required to confirm acceptable performance within the application's impedance tolerance window.