MPI4040R3-1R5-R Equivalent & Substitute Parts

Part Overview

The MPI4040R3-1R5-R is a 1.5 µH shielded drum core, wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 3.8 A continuous current with a DC resistance of 36 mOhm and operates across the temperature range of -55°C to 125°C. The part is classified as obsolete, necessitating identification of equivalent substitute components that maintain functional compatibility while offering improved availability and potentially enhanced electrical characteristics.

Substiute Parts

MPI4040R3-1R5-R

Eaton - Electronics DivisionIn Stock: 2510MPI4040R3-1R5-R Datasheet

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MPI4020V2-1R5-R

Eaton - Electronics DivisionIn Stock: 3602MPI4020V2-1R5-R Datasheet

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ETQ-P3M1R5KVP

Panasonic Electronic ComponentsIn Stock: 3902ETQ-P3M1R5KVP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MPI4040R3-1R5-R are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Core Substitution Criteria:

• Inductance value: 1.5 µH (exact match required)
• Inductance tolerance: ±20% (matching tolerance band)
• Core type: Drum core, wirewound construction
• Core material: Metal composite shielding
• Shielding: Shielded configuration

Electrical Substitution Criteria:

• Current rating: Equal to or greater than 3.8 A
• DC resistance: Equal to or less than 36 mOhm (lower DCR preferred for reduced losses)
• Operating temperature range: Minimum -55°C to 125°C coverage
• Inductance test frequency: 100 kHz

Mechanical Substitution Criteria:

• Mounting type: Surface mount
• Package compatibility: Nonstandard form factor with similar footprint dimensions

The identified substitute parts maintain the 1.5 µH inductance specification and shielded drum core construction while offering improved current ratings and reduced DC resistance compared to the obsolete MPI4040R3-1R5-R.

Parameter Comparison

Engineering Selection Recommendations

MPI4020V2-1R5-R (Eaton - Electronics Division)

This substitute maintains manufacturer continuity with the original MPI4040R3-1R5-R while offering improved electrical performance. The MPI4020V2-1R5-R provides a 5 A current rating (31% increase over the main part) and reduces DC resistance to 30 mOhm maximum (17% reduction). The part is active in production status with RoHS compliance certification. Operating temperature range remains -55°C to 125°C, matching the original specification. This option is suitable for applications requiring direct manufacturer compatibility and standard RoHS compliance.

ETQ-P3M1R5KVP (Panasonic Electronic Components)

This substitute offers the highest performance upgrade among available options. The ETQ-P3M1R5KVP delivers 8.1 A current rating (113% increase) and significantly reduces DC resistance to 13.2 mOhm maximum (63% reduction compared to the main part). The component features an extended operating temperature range of -55°C to 155°C and includes AEC-Q200 automotive qualification rating. ROHS3 compliance and REACH unaffected status are provided. This option is appropriate for applications requiring enhanced thermal performance, reduced power dissipation, and automotive-grade reliability.

Both substitute parts maintain the 1.5 µH inductance specification, ±20% tolerance, shielded drum core construction, and 100 kHz test frequency of the original MPI4040R3-1R5-R. Selection between substitutes depends on application requirements for current capacity, thermal performance, and compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the MPI4020V2-1R5-R directly replace the MPI4040R3-1R5-R in existing designs?

A: Yes. Both parts share identical inductance (1.5 µH), tolerance (±20%), core type (drum core, wirewound), core material (metal composite), shielding (shielded), operating temperature range (-55°C to 125°C), and test frequency (100 kHz). The MPI4020V2-1R5-R provides improved current rating (5 A vs. 3.8 A) and lower DC resistance (30 mOhm max vs. 36 mOhm), making it a direct functional upgrade. Mechanical footprint compatibility should be verified for the specific application.

Q: What are the key differences between the two substitute parts?

A: The MPI4020V2-1R5-R is an Eaton product maintaining manufacturer continuity, while the ETQ-P3M1R5KVP is a Panasonic component. The ETQ-P3M1R5KVP offers superior electrical performance with 8.1 A current rating and 13.2 mOhm DCR, extended temperature range to 155°C, and AEC-Q200 automotive qualification. The MPI4020V2-1R5-R provides a more conservative upgrade path with maintained Eaton sourcing and standard RoHS compliance.

Q: Are there package or footprint compatibility concerns with these substitutes?

A: The MPI4040R3-1R5-R uses a nonstandard package measuring 0.175" L x 0.160" W (4.45mm x 4.06mm) with 0.073" maximum height. The MPI4020V2-1R5-R has similar nonstandard dimensions of 0.160" L x 0.171" W (4.06mm x 4.35mm) with 0.079" maximum height. The ETQ-P3M1R5KVP uses a 2-SMD J-Lead package measuring 0.217" L x 0.197" W (5.50mm x 5.00mm) with 0.118" maximum height. Physical layout verification is required for each substitute.

Q: Which substitute is recommended for automotive applications?

A: The ETQ-P3M1R5KVP is qualified for automotive use with AEC-Q200 certification. This part is suitable for automotive-grade reliability requirements. The MPI4020V2-1R5-R does not carry automotive qualification and is appropriate for industrial and commercial applications.

Q: What is the significance of the lower DC resistance in the substitute parts?

A: Lower DC resistance reduces resistive power losses (I²R losses) in the inductor. The MPI4020V2-1R5-R at 30 mOhm and the ETQ-P3M1R5KVP at 13.2 mOhm both reduce losses compared to the original 36 mOhm specification. This results in lower operating temperatures, improved efficiency, and reduced thermal stress on surrounding components.

Q: Are both substitute parts available in tape and reel packaging?

A: Yes. Both the MPI4020V2-1R5-R and ETQ-P3M1R5KVP are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes. The original MPI4040R3-1R5-R packaging format is not specified in the provided data.

Q: What compliance certifications apply to each part?

A: The MPI4020V2-1R5-R carries RoHS Compliant certification. The ETQ-P3M1R5KVP carries ROHS3 Compliant certification and is REACH Unaffected. Both parts are classified under ECCN EAR99 and HTSUS 8504.50.8000. The original MPI4040R3-1R5-R compliance status is not specified.