MMZ2012S800ATAH0 Equivalent & Substitute Parts

Part Overview

The MMZ2012S800ATAH0 is a single-line ferrite bead manufactured by TDK Corporation, designed for signal line filtering applications. This component operates at 80 Ohms impedance at 100 MHz with a maximum current rating of 800mA and is packaged in the 0805 (2012 Metric) surface mount form factor. The part is designated as Last Time Buy, indicating discontinued production status. Identification of equivalent substitute parts is necessary to ensure design continuity and procurement availability for new production runs and ongoing support.

Substiute Parts

MMZ2012S800ATAH0

TDK CorporationIn Stock: 1100MMZ2012S800ATAH0 Datasheet

Current PartRFQ

MMZ1608S800ATA00

TDK CorporationIn Stock: 17134MMZ1608S800ATA00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMZ2012S800ATAH0 is based on the following critical parameters that must remain constant across equivalent parts:

Mandatory Matching Parameters:

• Impedance specification: 80 Ohms @ 100 MHz
• Filter type: Signal Line
• Number of lines: 1
• Series family: MMZ (TDK Corporation)
• Operating temperature range: -55°C to 125°C
• Compliance certifications: ROHS3, REACH Unaffected, EAR99

Allowable Variation Parameters:

• Package form factor (0805 to 0603 acceptable with design layout verification)
• Current rating (may be lower if application current requirements are met)
• DC resistance (may be higher within acceptable insertion loss limits)
• Physical dimensions (smaller packages permitted if PCB layout accommodates)

The substitute part MMZ1608S800ATA00 maintains identical impedance, filter type, line count, temperature range, and compliance status while operating in a smaller 0603 (1608 Metric) package with reduced current and increased DC resistance specifications.

Parameter Comparison

Engineering Selection Recommendations

The MMZ1608S800ATA00 serves as the active production equivalent for the discontinued MMZ2012S800ATAH0. Both components maintain identical impedance characteristics and operating temperature specifications, ensuring functional compatibility in signal line filtering applications.

Selection Criteria:

The MMZ1608S800ATA00 is suitable for applications where the circuit current requirement does not exceed 500mA. The reduced current rating reflects the smaller 0603 package geometry. The increased DC resistance of 150mOhm (versus 100mOhm) results in marginally higher insertion loss; this difference is acceptable in signal line filtering where impedance matching is the primary design parameter.

Both parts carry ROHS3 compliance and REACH Unaffected status, meeting regulatory requirements for commercial and industrial applications. The MSL 1 rating indicates unlimited shelf life under standard storage conditions.

The 0603 package footprint is smaller than the 0805, requiring PCB layout adjustment. Height reduction from 1.05mm to 0.95mm may provide clearance benefits in space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can MMZ1608S800ATA00 directly replace MMZ2012S800ATAH0 in all applications?

A: Direct replacement is possible when circuit current does not exceed 500mA. The impedance specification of 80 Ohms @ 100 MHz is identical, ensuring equivalent filtering performance. PCB layout modification is required due to package size difference (0603 versus 0805).

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

A: The DC resistance increase from 100mOhm to 150mOhm results in additional insertion loss of approximately 50mOhm. In signal line applications, this represents a minor voltage drop increase. The impedance-based filtering function remains unchanged.

Q: Are there compliance or certification differences between these parts?

A: Both parts are ROHS3 compliant, REACH Unaffected, and classified as EAR99. No compliance differences exist. Both carry MSL 1 rating with unlimited moisture sensitivity protection.

Q: What design considerations apply when switching from 0805 to 0603 package?

A: The 0603 package requires smaller PCB pad geometry and reduced trace routing space. Component height decreases by 0.1mm. Thermal performance may differ slightly due to reduced package volume. Verify PCB layout compatibility before design implementation.

Q: Why is MMZ2012S800ATAH0 designated as Last Time Buy?

A: Last Time Buy status indicates TDK Corporation has discontinued this part number. The MMZ1608S800ATA00 represents the active production alternative within the MMZ series with equivalent electrical specifications.

Q: Can current rating be exceeded if application requires higher current handling?

A: No. The 500mA maximum current rating of MMZ1608S800ATA00 is a hard limit based on component thermal and magnetic saturation characteristics. Applications requiring 800mA current must retain the original 0805 package or identify alternative suppliers.