L0603C1R0MDMIT Equivalent & Substitute Parts

Part Overview

The L0603C1R0MDMIT is a 1 µH shielded multilayer ferrite inductor manufactured by KEMET in the 0603 (1608 Metric) surface mount package. This component is rated for 750 mA continuous current with a maximum DC resistance of 200 mOhm and operates across the temperature range of -40°C to 85°C. The product is classified as obsolete, necessitating identification of active equivalent components that maintain functional compatibility for existing designs and new production requirements.

Substiute Parts

L0603C1R0MDMIT

KEMETIn Stock: 4111L0603C1R0MDMIT Datasheet

Current PartRFQ

LQM18PZ1R0MCHD

Murata ElectronicsIn Stock: 97532LQM18PZ1R0MCHD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L0603C1R0MDMIT is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

• Inductance value: 1 µH with ±20% tolerance
• Package / Case: 0603 (1608 Metric) surface mount
• Shielding type: Shielded construction
• Core material: Ferrite
• Mounting type: Surface mount

Allowable Parameter Variations: Substitute parts may exceed the original specifications in the following parameters without compromising circuit functionality:

• Current Rating: Substitute parts rated at 950 mA or higher satisfy designs requiring 750 mA
• DC Resistance (DCR): Substitute parts with DCR up to 290 mOhm are acceptable for applications tolerant of increased resistance
• Operating Temperature Range: Extended ranges (-55°C ~ 125°C) provide broader operational capability
• Product Status: Active components are preferred over obsolete classifications for supply chain continuity

The LQM18PZ1R0MCHD manufactured by Murata Electronics meets all mandatory equivalence criteria and exceeds performance specifications in current rating and temperature range.

Parameter Comparison

Engineering Selection Recommendations

The LQM18PZ1R0MCHD from Murata Electronics is a direct functional equivalent to the obsolete L0603C1R0MDMIT. Both components are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard manufacturing and storage protocols.

The Murata substitute provides enhanced performance specifications across multiple parameters. The increased current rating of 950 mA accommodates designs originally specified for 750 mA with additional margin. The extended operating temperature range of -55°C to 125°C supports applications requiring broader thermal performance compared to the original -40°C to 85°C specification.

The LQM18PZ1R0MCHD carries AEC-Q200 automotive qualification, indicating suitability for demanding industrial and automotive applications. The component is currently in active production status with substantial inventory availability, ensuring long-term supply chain reliability.

The physical footprint remains identical in length and width (1.60mm x 0.80mm), with the substitute component featuring a reduced seated height of 0.65mm compared to 0.80mm on the original part. This dimensional difference presents no compatibility concerns for standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the LQM18PZ1R0MCHD be used as a direct replacement for the L0603C1R0MDMIT in existing designs?

A: Yes. Both components share identical inductance values (1 µH), tolerance specifications (±20%), package designations (0603 / 1608 Metric), shielding characteristics, and core materials (ferrite). The substitute component meets or exceeds all electrical performance requirements of the original part.

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

A: The LQM18PZ1R0MCHD is rated for 950 mA continuous current compared to 750 mA on the KEMET original. This higher rating provides additional design margin and allows the component to operate with reduced thermal stress in applications drawing up to 750 mA. The increased rating does not affect circuit operation in designs originally specified for 750 mA.

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

A: The substitute component specifies a maximum DC resistance of 290 mOhm compared to 200 mOhm on the original. This 90 mOhm difference results in increased resistive losses proportional to the square of the current flowing through the inductor. For a 750 mA design, this represents an additional power dissipation of approximately 50 mW. Circuit designs must evaluate whether this increased loss is acceptable for the specific application.

Q: Are there any PCB layout or assembly considerations when substituting this component?

A: The substitute component features a reduced seated height of 0.65mm compared to 0.80mm on the original. This dimensional difference is compatible with standard PCB assembly equipment and does not require design modifications. The identical length and width dimensions (1.60mm x 0.80mm) ensure footprint compatibility without layout changes.

Q: What compliance certifications apply to the substitute component?

A: The LQM18PZ1R0MCHD is ROHS3 compliant and carries AEC-Q200 automotive qualification. Both components maintain MSL 1 (Unlimited) moisture sensitivity ratings and REACH unaffected status, ensuring compatibility with standard manufacturing and regulatory requirements.

Q: Why is the Murata component preferred over the obsolete KEMET part?

A: The L0603C1R0MDMIT is classified as obsolete, indicating discontinued production and limited inventory availability. The LQM18PZ1R0MCHD is in active production status with substantial inventory reserves, ensuring reliable long-term supply chain access for both new designs and production continuity of existing products.