L0603C100MPMST Equivalent & Substitute Parts

Part Overview

The L0603C100MPMST is a 10 µH shielded multilayer ferrite inductor manufactured by KEMET in the 0603 (1608 Metric) surface mount package. This component is rated for 50 mA maximum current with 850 mOhm maximum DC resistance and operates across the temperature range of -40°C to 85°C. The part is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing production requirements. Substitute parts must maintain the same inductance value, package dimensions, and core shielding characteristics while accommodating application-specific current and resistance parameters.

Substiute Parts

L0603C100MPMST

KEMETIn Stock: 948L0603C100MPMST Datasheet

Current PartRFQ

MLZ1608M100WTD25

TDK CorporationIn Stock: 3145MLZ1608M100WTD25 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the L0603C100MPMST are qualified based on the following criteria:

Mandatory Matching Parameters:

• Inductance value: 10 µH
• Package / Case: 0603 (1608 Metric)
• Shielding: Shielded
• Material - Core: Ferrite
• Tolerance: ±20%
• Mounting Type: Surface Mount
• Inductance Frequency - Test: 2 MHz

Allowable Variation Parameters:

• Current Rating: Substitute parts may exceed the original 50 mA specification
• DC Resistance (DCR): Substitute parts may differ from the original 850 mOhm maximum
• Operating Temperature Range: Substitute parts may provide extended temperature coverage
• Product Status: Active substitutes are preferred over obsolete components

The MLZ1608M100WTD25 from TDK Corporation satisfies all mandatory matching parameters while providing enhanced electrical performance characteristics suitable for applications requiring higher current capacity and improved thermal stability.

Parameter Comparison

Engineering Selection Recommendations

The MLZ1608M100WTD25 is an active substitute for the obsolete L0603C100MPMST. Both components share identical inductance specifications, package dimensions, and core material composition, ensuring mechanical and electrical compatibility in PCB layouts.

The substitute part provides the following advantages:

Product Status: The MLZ1608M100WTD25 maintains active production status, ensuring long-term component availability and supply chain continuity.

Compliance Certifications: Both parts are ROHS3 compliant and REACH unaffected. The MLZ1608M100WTD25 carries AEC-Q200 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components.

Thermal Performance: The substitute part extends the operating temperature range to -55°C to 125°C, compared to the original -40°C to 85°C specification, accommodating wider environmental conditions.

Current Capacity: The MLZ1608M100WTD25 supports 250 mA current rating versus the original 50 mA specification, providing design margin for applications with variable or future current requirements.

DC Resistance: The substitute part exhibits 1.05 Ohm DC resistance compared to the original 850 mOhm maximum. Applications sensitive to resistive losses require evaluation of this parameter difference.

Frequently Asked Questions (FAQ)

Q: Can the MLZ1608M100WTD25 be used as a direct replacement for the L0603C100MPMST?

A: Yes. Both components share identical inductance values (10 µH), package dimensions (0603/1608 Metric), shielding characteristics, and core material (ferrite). The substitute part is mechanically and electrically compatible for PCB assembly and layout purposes.

Q: What is the significance of the higher current rating on the substitute part?

A: The MLZ1608M100WTD25 supports 250 mA compared to the original 50 mA specification. This higher rating provides design margin and allows the component to operate safely in applications with current demands exceeding the original part's capability. Applications operating below 50 mA experience no functional difference.

Q: How does the increased DC resistance affect circuit performance?

A: The substitute part exhibits 1.05 Ohm DC resistance versus the original 850 mOhm maximum. This difference introduces additional resistive losses in the inductor. Applications where resistive losses directly impact circuit efficiency or signal integrity require detailed circuit analysis to confirm acceptable performance.

Q: Are both parts suitable for automotive applications?

A: The MLZ1608M100WTD25 carries AEC-Q200 automotive qualification. The original L0603C100MPMST does not specify automotive certification. Applications requiring automotive-grade components should use the substitute part.

Q: What is the impact of the extended temperature range on the substitute part?

A: The MLZ1608M100WTD25 operates from -55°C to 125°C compared to the original -40°C to 85°C range. This extended specification accommodates applications in extreme thermal environments. Standard applications operating within the original temperature range experience no functional difference.

Q: Are moisture sensitivity levels identical between both parts?

A: Yes. Both the L0603C100MPMST and MLZ1608M100WTD25 are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.

Q: Do both parts comply with environmental regulations?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance restrictions for electronic components in regulated markets.