MMZ2012S181AT000 Equivalent & Substitute Parts

Part Overview

The MMZ2012S181AT000 is a single-line ferrite bead manufactured by TDK Corporation, designed for signal line filtering applications. This 0805 (2012 Metric) surface mount component provides 180 Ohms impedance at 100 MHz with a maximum current rating of 600mA and 150mOhm DC resistance. The part is classified as Last Time Buy, indicating production discontinuation. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring ferrite bead filtering in compact form factors.

Substiute Parts

MMZ2012S181AT000

TDK CorporationIn Stock: 33239MMZ2012S181AT000 Datasheet

Current PartRFQ

MMZ1608S181ATA00

TDK CorporationIn Stock: 8395MMZ1608S181ATA00 Datasheet

MFR RecommendedRFQ

MFBW1V2012-181-R

Eaton - Electronics DivisionIn Stock: 1035MFBW1V2012-181-R Datasheet

MFR RecommendedRFQ

ACML-0805-151-T

Abracon LLCIn Stock: 3959ACML-0805-151-T Datasheet

Parametric EquivalentRFQ

BLM21AG151SN1D

Murata ElectronicsIn Stock: 3328BLM21AG151SN1D Datasheet

Parametric EquivalentRFQ

FB201209T-151Y-S-1

Cal-Chip Electronics, Inc.In Stock: 41108FB201209T-151Y-S-1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MMZ2012S181AT000 are categorized based on the following substitution criteria:

MFR Recommended Substitutes maintain identical electrical specifications (180 Ohms @ 100 MHz impedance, 150mOhm DCR) and package form factor (0805/2012 Metric), with active product status ensuring ongoing availability. These parts are direct functional replacements.

Parametric Equivalents provide comparable filtering performance through similar impedance values (150 Ohms @ 100 MHz) and package dimensions (0805/2012 Metric), with enhanced current handling or reduced DC resistance. These parts satisfy the core filtering function with minor impedance deviation and improved electrical characteristics.

Key parameters determining substitution eligibility:

• Package / Case: 0805 (2012 Metric) or compatible surface mount form factor
• Impedance @ Frequency: 180 Ohms @ 100 MHz (MFR Recommended) or 150 Ohms @ 100 MHz (Parametric Equivalent)
• Number of Lines: 1 (single-line configuration)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C ~ 125°C minimum
• RoHS Compliance: ROHS3 Compliant

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

MFBW1V2012-181-R from Eaton - Electronics Division is the primary MFR recommended substitute, maintaining 180 Ohms impedance at 100 MHz and 150mOhm DCR in the 0805 package. This part offers superior current handling (2A vs. 600mA) and active product status. Temperature range is -40°C ~ 85°C, which is narrower than the original part; verify compatibility with application requirements.

MMZ1608S181ATA00 from TDK Corporation provides identical impedance and DCR specifications with active status. This part uses the smaller 0603 (1608 Metric) package, reducing board space but limiting current capacity to 500mA. Board layout redesign may be required.

For Parametric Equivalence (Similar Filtering Performance):

ACML-0805-151-T, BLM21AG151SN1D, and FB201209T-151Y-S-1 provide 150 Ohms impedance at 100 MHz with enhanced current ratings (800mA) and reduced or equal DCR. All three maintain the 0805 package form factor and -55°C ~ 125°C operating range. These parts are suitable for applications where 30 Ohms impedance reduction is acceptable and higher current capacity is beneficial.

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage practices.

Frequently Asked Questions (FAQ)

Q: Can MMZ1608S181ATA00 be used as a direct replacement for MMZ2012S181AT000?

A: MMZ1608S181ATA00 provides identical impedance (180 Ohms @ 100 MHz) and operating temperature range (-55°C ~ 125°C), but uses a smaller 0603 package and has reduced current capacity (500mA vs. 600mA) and higher DCR (200mOhm vs. 150mOhm). Direct substitution requires verification that board layout accommodates the smaller package and that circuit current demands do not exceed 500mA.

Q: What is the difference between MFR Recommended and Parametric Equivalent substitutes?

A: MFR Recommended substitutes (MFBW1V2012-181-R and MMZ1608S181ATA00) maintain the original 180 Ohms impedance specification. Parametric Equivalents (ACML-0805-151-T, BLM21AG151SN1D, FB201209T-151Y-S-1) provide 150 Ohms impedance, a 16.7% reduction. Parametric equivalents are suitable when the application can tolerate impedance variation and benefit from improved current handling or lower DC resistance.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, ensuring compatibility with RoHS-regulated manufacturing environments and end-use applications.

Q: What is the impact of DCR differences on circuit performance?

A: DC Resistance affects power dissipation and insertion loss. The original MMZ2012S181AT000 and MFBW1V2012-181-R both specify 150mOhm DCR. BLM21AG151SN1D and FB201209T-151Y-S-1 offer lower DCR (100mOhm), reducing resistive losses by approximately 33%. ACML-0805-151-T maintains 150mOhm DCR. Lower DCR is beneficial in high-current applications.

Q: Can MFBW1V2012-181-R be used in applications requiring -55°C operation?

A: MFBW1V2012-181-R specifies an operating temperature range of -40°C ~ 85°C, which does not extend to -55°C. Applications requiring -55°C minimum operation must use MMZ2012S181AT000, MMZ1608S181ATA00, ACML-0805-151-T, BLM21AG151SN1D, or FB201209T-151Y-S-1.

Q: What packaging formats are available for these ferrite beads?

A: MMZ2012S181AT000 is supplied in Tape & Reel (TR) format. MMZ1608S181ATA00 is supplied in Tape & Reel (TR). MFBW1V2012-181-R is supplied in Tape & Reel (TR). ACML-0805-151-T is supplied in Tape & Reel (TR). BLM21AG151SN1D is supplied in Cut Tape (CT) & Digi-Reel format. FB201209T-151Y-S-1 is supplied in Tape & Reel (TR). Verify packaging compatibility with assembly equipment and procurement requirements.