MMZ2012Y300BTD25 Equivalent & Substitute Parts

Part Overview

The MMZ2012Y300BTD25 is a 30 Ohm ferrite bead in 0805 (2012 Metric) surface mount package manufactured by TDK Corporation. This single-line signal ferrite bead operates at 100 MHz with a maximum current rating of 1.5A and 50mOhm DC resistance. The part carries AEC-Q200 automotive qualification and is RoHS3 compliant. Currently in Last Time Buy status, alternative equivalent parts are available to ensure design continuity and supply chain flexibility.

Key Parameters

Parameter	Value
Impedance @ 100 MHz	30 Ohms
Current Rating (Max)	1.5A
DC Resistance (Max)	50mOhm
Package / Case	0805 (2012 Metric)
Operating Temperature Range	-55°C ~ 125°C
Filter Type	Signal Line
Number of Lines	1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MMZ2012Y300BTD25 is determined by the following critical parameters:

Impedance @ 100 MHz: 30 Ohms (exact match required)
Current Rating: Minimum 1.5A (equal or higher acceptable)
DC Resistance: Maximum 50mOhm (equal or lower acceptable)
Operating Temperature: -55°C ~ 125°C (exact match required)
Filter Type: Signal Line (exact match required)
Number of Lines: 1 (exact match required)
RoHS Compliance: ROHS3 Compliant (required)

Substitute parts are grouped into two categories:

Category 1: Package-Compatible Substitutes (0805/2012 Metric) Parts maintaining identical 0805 (2012 Metric) package dimensions and all electrical parameters. These provide direct board-level replacement without layout modification.

Category 2: Parametric Equivalents with Package Variation (0603/1608 Metric) Parts meeting all electrical specifications but in smaller 0603 (1608 Metric) package. These require PCB layout adjustment but maintain functional equivalence.

Parameter Comparison

Parameter	MMZ2012Y300BTD25 (Main)	MMZ2012R300ATD25	MH2029-300Y	MMZ1608Y300BTD25
Manufacturer	TDK Corporation	TDK Corporation	Bourns Inc.	TDK Corporation
Impedance @ 100 MHz	30 Ohms	30 Ohms	30 Ohms	30 Ohms
Current Rating (Max)	1.5A	1.5A	3A	1.5A
DC Resistance (Max)	50mOhm	50mOhm	25mOhm	50mOhm
Package / Case	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0603 (1608 Metric)
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Filter Type	Signal Line	Signal Line	Power, Signal Line	Signal Line
Number of Lines	1	1	1	1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Last Time Buy	Last Time Buy	Active	Active

Engineering Selection Recommendations

MMZ2012R300ATD25 (TDK Corporation) This part is a parametric equivalent with identical electrical specifications and 0805 package footprint. Both the main part and this substitute are in Last Time Buy status. Selection of this part maintains design continuity with no PCB layout changes required. Inventory availability is lower (1013 pcs) compared to the main part.

MH2029-300Y (Bourns Inc.) This part meets all electrical requirements with enhanced performance characteristics: 3A current rating (versus 1.5A) and 25mOhm DC resistance (versus 50mOhm). The 0805 package footprint is identical. Product status is Active, providing long-term supply assurance. This part is suitable for designs requiring higher current capacity or lower insertion loss. Inventory availability is highest among substitutes (66276 pcs).

MMZ1608Y300BTD25 (TDK Corporation) This part is a parametric equivalent in smaller 0603 (1608 Metric) package. All electrical specifications match the main part. Product status is Active. Selection requires PCB layout modification to accommodate the smaller footprint. This option is suitable for space-constrained applications. Inventory availability is 10872 pcs.

Frequently Asked Questions (FAQ)

Q: Can MMZ2012R300ATD25 be used as a direct replacement for MMZ2012Y300BTD25? A: Yes. Both parts share identical impedance (30 Ohms @ 100 MHz), current rating (1.5A), DC resistance (50mOhm), operating temperature range (-55°C ~ 125°C), and 0805 package footprint. No design changes are required.

Q: What is the difference between MMZ2012Y300BTD25 and MH2029-300Y? A: Both parts have 30 Ohm impedance at 100 MHz and 0805 package. MH2029-300Y offers higher current rating (3A versus 1.5A) and lower DC resistance (25mOhm versus 50mOhm). MH2029-300Y is manufactured by Bourns Inc. and has Active product status, while MMZ2012Y300BTD25 is Last Time Buy.

Q: Can MMZ1608Y300BTD25 replace MMZ2012Y300BTD25 without PCB modification? A: No. MMZ1608Y300BTD25 uses 0603 (1608 Metric) package, which is physically smaller than the 0805 (2012 Metric) package of MMZ2012Y300BTD25. PCB layout changes are required. Electrical specifications are equivalent.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts are ROHS3 Compliant and meet the same environmental compliance requirements as the main part.

Q: Which substitute part has the best long-term availability? A: MH2029-300Y has Active product status and highest inventory (66276 pcs), providing the strongest supply assurance for future production needs.

Q: Do all parts have the same operating temperature range? A: Yes. All parts operate across -55°C ~ 125°C temperature range.

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