MMZ2012S601AT000 Equivalent & Substitute Parts

Part Overview

The MMZ2012S601AT000 is a 600 Ohm ferrite bead signal line filter manufactured by TDK Corporation in 0805 (2012 Metric) surface mount package. This component operates at 100 MHz impedance with 500mA current rating and 300mOhm maximum DC resistance across an operating temperature range of -55°C to 125°C. The part is designated as Last Time Buy status, making identification of equivalent and substitute parts essential for design continuity and procurement planning.

Key Parameters

Parameter	Value
Impedance @ Frequency	600 Ohms @ 100 MHz
Package / Case	0805 (2012 Metric)
Current Rating (Max)	500mA
DC Resistance (DCR) (Max)	300mOhm
Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount
Filter Type	Signal Line
Number of Lines	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MMZ2012S601AT000 is determined by the following critical parameters:

Primary Substitution Criteria:

Impedance @ 100 MHz: 600 Ohms (exact match required)
Package / Case: 0805 (2012 Metric) (exact match required for PCB compatibility)
Current Rating: Minimum 500mA (equal or higher acceptable)
DC Resistance: Maximum 300mOhm (lower values acceptable)
Operating Temperature: -55°C ~ 125°C (equal or wider range acceptable)
Mounting Type: Surface Mount (exact match required)
Number of Lines: 1 (exact match required)

Secondary Compatibility Factors:

RoHS3 Compliance (required for regulatory alignment)
MSL Rating: 1 (Unlimited) (equal or better acceptable)
Filter Type: Signal Line (preferred for signal applications)

Substitute parts are grouped into three categories: MFR Recommended (manufacturer-endorsed alternatives), Parametric Equivalents (matching all critical electrical and mechanical parameters), and Direct Alternatives (from different manufacturers with compatible specifications).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Impedance @ 100 MHz	Package	Current Rating (Max)	DCR (Max)	Operating Temp	Product Status	RoHS Status
MMZ2012S601AT000	TDK Corporation	600 Ohms	0805 (2012 Metric)	500mA	300mOhm	-55°C ~ 125°C	Last Time Buy	ROHS3 Compliant
MMZ1608S601ATA00	TDK Corporation	600 Ohms	0603 (1608 Metric)	500mA	400mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant
MMZ2012R601AT000	TDK Corporation	600 Ohms	0805 (2012 Metric)	500mA	200mOhm	-55°C ~ 125°C	Last Time Buy	ROHS3 Compliant
MMZ2012Y601BT000	TDK Corporation	600 Ohms	0805 (2012 Metric)	500mA	200mOhm	-55°C ~ 125°C	Last Time Buy	ROHS3 Compliant
MH2029-601Y	Bourns Inc.	600 Ohms	0805 (2012 Metric)	1A	200mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant
MFBW1V2012-601-R	Eaton - Electronics Division	600 Ohms	0805 (2012 Metric)	1.5A	250mOhm	-40°C ~ 85°C	Active	ROHS3 Compliant
7427920415	Würth Elektronik	600 Ohms	0805 (2012 Metric)	500mA	300mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant
ACML-0805-501-T	Abracon LLC	500 Ohms	0805 (2012 Metric)	500mA	300mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant
BBGK00201209601Y00	Pulse Electronics	600 Ohms	0805 (2012 Metric)	500mA	250mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant
BLM21AG601SN1D	Murata Electronics	600 Ohms	0805 (2012 Metric)	600mA	210mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant
EMI0805R-600	Delevan	600 Ohms	0805 (2012 Metric)	500mA	300mOhm	-55°C ~ 125°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Full Parameter Match (Recommended Primary Substitutes):

MMZ2012R601AT000 and MMZ2012Y601BT000 from TDK Corporation provide identical electrical and mechanical specifications to the MMZ2012S601AT000 with improved DC resistance (200mOhm versus 300mOhm). Both maintain the same 0805 package, 500mA current rating, and -55°C to 125°C operating range. MMZ2012Y601BT000 offers higher inventory availability (165,400 pieces) compared to MMZ2012R601AT000 (9,351 pieces).

Active Status Alternatives (Recommended for Long-Term Availability):

MH2029-601Y (Bourns Inc.), 7427920415 (Würth Elektronik), BBGK00201209601Y00 (Pulse Electronics), BLM21AG601SN1D (Murata Electronics), and EMI0805R-600 (Delevan) all maintain 600 Ohm impedance at 100 MHz in 0805 package with Active product status. MH2029-601Y and MFBW1V2012-601-R provide higher current ratings (1A and 1.5A respectively), suitable for applications requiring increased current capacity. BLM21AG601SN1D offers the lowest DC resistance (210mOhm) among all alternatives.

Temperature Range Consideration:

MFBW1V2012-601-R operates within -40°C to 85°C range, which is narrower than the original part's -55°C to 125°C specification. This part is suitable only for applications not requiring the full temperature range.

Package Deviation:

MMZ1608S601ATA00 uses 0603 (1608 Metric) package instead of 0805, requiring PCB layout modification. This part is not recommended as a direct substitute without design revision.

Impedance Deviation:

ACML-0805-501-T provides 500 Ohms impedance instead of 600 Ohms. This part is not suitable for applications requiring exact 600 Ohm impedance specification.

Frequently Asked Questions (FAQ)

Q: Can MMZ1608S601ATA00 be used as a direct replacement for MMZ2012S601AT000?

A: No. MMZ1608S601ATA00 uses 0603 (1608 Metric) package versus the 0805 (2012 Metric) package of the original part. PCB footprint and component placement are incompatible without design modification. Additionally, DC resistance is higher at 400mOhm versus 300mOhm.

Q: What is the difference between MMZ2012S601AT000 and MMZ2012Y601BT000?

A: Both parts maintain identical impedance (600 Ohms @ 100 MHz), package (0805), current rating (500mA), and operating temperature (-55°C ~ 125°C). MMZ2012Y601BT000 has lower DC resistance (200mOhm versus 300mOhm) and significantly higher inventory availability (165,400 pieces versus 101,300 pieces). Both are Last Time Buy status.

Q: Can ACML-0805-501-T replace MMZ2012S601AT000?

A: No. ACML-0805-501-T provides 500 Ohms impedance at 100 MHz, not 600 Ohms. Impedance mismatch will result in incorrect EMI filtering performance. This part is not electrically equivalent.

Q: Is MH2029-601Y suitable for the same application?

A: MH2029-601Y matches the 600 Ohm impedance, 0805 package, and operating temperature range. It provides higher current rating (1A versus 500mA) and lower DC resistance (200mOhm). The part is Active status, ensuring long-term availability. It is suitable for direct substitution in applications not requiring the exact 500mA current specification.

Q: What are the advantages of BLM21AG601SN1D?

A: BLM21AG601SN1D provides 600 Ohm impedance at 100 MHz in 0805 package with the lowest DC resistance among all alternatives (210mOhm). Current rating is 600mA, exceeding the original 500mA specification. Operating temperature range matches the original (-55°C ~ 125°C). Active product status ensures continued availability.

Q: Why is MFBW1V2012-601-R marked as MFR Recommended?

A: MFBW1V2012-601-R from Eaton provides 600 Ohm impedance in 0805 package with higher current rating (1.5A) and lower DC resistance (250mOhm). However, operating temperature range is limited to -40°C ~ 85°C, which is narrower than the original specification. This part is suitable only for applications not requiring full temperature range operation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 Compliant status, ensuring regulatory alignment with the original MMZ2012S601AT000.

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

A: DC resistance affects power dissipation and insertion loss. Lower DC resistance (200mOhm in MMZ2012R601AT000, MMZ2012Y601BT000, and MH2029-601Y) reduces heat generation compared to the original 300mOhm specification. Higher DC resistance (400mOhm in MMZ1608S601ATA00) increases power dissipation. Selection depends on thermal and power budget requirements of the specific application.

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