MPLC1040L4R7 Equivalent & Substitute Parts

Part Overview

The MPLC1040L4R7 is a 4.7 µH shielded wirewound inductor manufactured by KEMET, rated for 8 A continuous current with a maximum DC resistance of 19 mOhm. This component is designed for surface mount applications in the 2-SMD, J-Lead package format and is currently in active production status. The part operates across a temperature range of -20°C to 120°C and complies with RoHS3 and REACH standards.

Equivalent and substitute parts are identified when design requirements permit tolerance of variations in shielding type, core material, DC resistance, saturation current, or operating temperature range while maintaining the core electrical specifications of 4.7 µH inductance at 100 kHz test frequency and 8 A minimum current rating.

Substiute Parts

MPLC1040L4R7

KEMETIn Stock: 3170MPLC1040L4R7 Datasheet

Current PartRFQ

ASPI-1040HI-4R7M-T05

Abracon LLCIn Stock: 1275ASPI-1040HI-4R7M-T05 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPLC1040L4R7 is permissible when the following core electrical parameters are maintained:

Critical Parameters (Must Match):

• Inductance value: 4.7 µH
• Inductance tolerance: ±20%
• Continuous current rating: minimum 8 A
• Mounting type: Surface Mount
• Test frequency: 100 kHz

Allowable Variations:

• Shielding type (shielded to unshielded) when EMI performance is not a design constraint
• Core material (wirewound to molded ferrite) when saturation characteristics are acceptable
• DC resistance up to 20.2 mOhm when power dissipation budget permits
• Saturation current above 8 A when transient current handling is not critical
• Operating temperature range expansion (e.g., -55°C to 125°C) when application operates within original -20°C to 120°C window
• Package case variations within equivalent footprint dimensions

The ASPI-1040HI-4R7M-T05 from Abracon LLC qualifies as a substitute based on these criteria.

Parameter Comparison

Engineering Selection Recommendations

MPLC1040L4R7 (KEMET) - Primary Selection:

• Select when shielded inductor performance is required to minimize electromagnetic interference coupling to adjacent circuit elements
• Wirewound construction provides established performance characteristics in applications requiring predictable inductance behavior
• Operating temperature range of -20°C to 120°C is suitable for standard industrial and commercial environments
• Active product status ensures long-term availability and supply chain stability
• Full RoHS3 and REACH compliance for regulated markets

ASPI-1040HI-4R7M-T05 (Abracon LLC) - Substitute Selection:

• Select when EMI shielding is not a circuit requirement and unshielded construction is acceptable
• Molded ferrite core construction offers alternative manufacturing approach with equivalent electrical performance
• Higher saturation current (15 A vs. 8 A) provides additional margin for transient current conditions
• Extended operating temperature range (-55°C to 125°C) accommodates wider environmental specifications
• Slightly higher DC resistance (20.2 mOhm vs. 19 mOhm) results in approximately 6% additional power dissipation; verify thermal budget compatibility
• Active product status ensures availability
• Full RoHS3 and REACH compliance for regulated markets

Both parts are suitable for direct substitution in applications where the noted parameter variations are acceptable to the design specification.

Frequently Asked Questions (FAQ)

Q: Can the ASPI-1040HI-4R7M-T05 replace the MPLC1040L4R7 in all applications?

A: The ASPI-1040HI-4R7M-T05 is electrically compatible for applications where unshielded inductor operation is acceptable. If the circuit design requires shielding to prevent EMI coupling or to meet conducted/radiated emissions limits, the shielded MPLC1040L4R7 is required. Verify shielding necessity in your application schematic and EMC test requirements.

Q: What is the impact of the 1.2 mOhm higher DC resistance in the substitute part?

A: The ASPI-1040HI-4R7M-T05 has a maximum DC resistance of 20.2 mOhm compared to 19 mOhm for the MPLC1040L4R7. At 8 A continuous current, this represents approximately 0.96 mW additional power dissipation (I²R loss). Verify that thermal design and PCB layout accommodate this increase.

Q: Are the physical dimensions compatible for PCB layout?

A: Both parts are surface mount components with identical height (4.00mm maximum seated height) and width (10.00mm). The ASPI-1040HI-4R7M-T05 length is 11.15mm versus 11.50mm for the MPLC1040L4R7, representing a 0.35mm reduction. Both footprints are compatible with standard 2-SMD, J-Lead land patterns.

Q: What is the difference between wirewound and molded ferrite core construction?

A: The MPLC1040L4R7 uses wirewound construction (wire wound on a core), while the ASPI-1040HI-4R7M-T05 uses molded ferrite construction (ferrite material molded into shape). Both achieve the same 4.7 µH inductance at 100 kHz. Wirewound inductors typically offer lower DC resistance and established performance; molded ferrite inductors offer higher saturation current and extended temperature range.

Q: Can I use the substitute part if my application requires operation below -20°C?

A: The MPLC1040L4R7 is rated for -20°C to 120°C. The ASPI-1040HI-4R7M-T05 extends the lower temperature limit to -55°C. If your application requires operation below -20°C, the ASPI-1040HI-4R7M-T05 is the appropriate selection.

Q: Are both parts available in the same packaging format?

A: Both parts are supplied in Tape & Reel (TR) packaging suitable for automated assembly. The MPLC1040L4R7 uses standard 2-SMD, J-Lead package format, while the ASPI-1040HI-4R7M-T05 uses a nonstandard package format. Verify that your pick-and-place equipment and feeder systems support the nonstandard package geometry.

Q: What compliance certifications apply to both parts?

A: Both the MPLC1040L4R7 and ASPI-1040HI-4R7M-T05 are RoHS3 compliant, REACH unaffected, classified as EAR99 for export control, and carry MSL rating of 1 (unlimited moisture sensitivity). Both parts meet regulatory requirements for EU and North American markets.