MPI4040R4-R22-R Equivalent & Substitute Parts

Part Overview

The MPI4040R4-R22-R is a 220 nH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 10.1 A continuous current with a DC resistance of 5.3 mOhm and operates across the temperature range of -55°C to 125°C. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

MPI4040R4-R22-R

Eaton - Electronics DivisionIn Stock: 1126MPI4040R4-R22-R Datasheet

Current PartRFQ

MPI4020V2-R22-R

Eaton - Electronics DivisionIn Stock: 8579MPI4020V2-R22-R Datasheet

DirectRFQ

ASPI-7318-R22M-T

Abracon LLCIn Stock: 952ASPI-7318-R22M-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the MPI4040R4-R22-R are evaluated based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Inductance value: 220 nH with ±20% tolerance
• Shielding requirement: Shielded configuration
• Core type: Drum core wirewound construction
• Operating temperature range: -55°C to 125°C minimum
• Mounting type: Surface mount

Secondary Compatibility Factors:

• Current rating and saturation current capability
• DC resistance characteristics
• Physical package dimensions and height constraints
• Moisture sensitivity classification

Substitutes are grouped into two categories: direct manufacturer alternatives from Eaton and cross-manufacturer options that meet the electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

MPI4020V2-R22-R (Direct Manufacturer Substitute)

The MPI4020V2-R22-R is the primary substitute option as it is manufactured by Eaton - Electronics Division, the same manufacturer as the obsolete MPI4040R4-R22-R. This part maintains identical inductance (220 nH), tolerance (±20%), operating temperature range (-55°C to 125°C), and moisture sensitivity classification (MSL 1). Both components feature metal composite drum core construction with shielding and surface mount configuration.

The MPI4020V2-R22-R is classified as active product status, ensuring ongoing availability and supply chain support. The part is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. Physical dimensions are comparable with identical seated height (0.079" / 2.00mm), though footprint dimensions vary slightly. The current rating of 9.5 A and saturation current of 12.5 A are marginally lower than the main part, and DC resistance is specified at 6.6 mOhm maximum compared to 5.3 mOhm. These differences remain within acceptable tolerance for most applications requiring 220 nH inductance at moderate current levels.

ASPI-7318-R22M-T (Cross-Manufacturer Alternative)

The ASPI-7318-R22M-T from Abracon LLC provides an alternative when Eaton components are unavailable. This part matches the 220 nH inductance and ±20% tolerance specification. Operating temperature range, moisture sensitivity, and shielded drum core wirewound construction align with the original part requirements.

The ASPI-7318-R22M-T offers superior current handling capability at 22 A continuous rating with 34 A saturation current, and lower DC resistance at 3.1 mOhm maximum. The core material is ferrite rather than metal composite. Physical dimensions are significantly larger (0.287" x 0.268" / 7.30mm x 6.80mm footprint with 0.118" / 3.00mm height), requiring verification of PCB layout compatibility. The inductance test frequency is specified at 200 kHz rather than 100 kHz. The part is ROHS3 compliant and REACH unaffected.

Selection between these substitutes depends on current requirements, available PCB space, and supply chain priorities. The MPI4020V2-R22-R is recommended as the primary choice for direct replacement due to manufacturer continuity and comparable physical characteristics.

Frequently Asked Questions (FAQ)

Q: Can the MPI4020V2-R22-R directly replace the MPI4040R4-R22-R without PCB modifications?

A: The MPI4020V2-R22-R maintains the same seated height (0.079" / 2.00mm) and comparable footprint dimensions, allowing direct replacement in most surface mount applications. However, footprint dimensions differ slightly (0.160" x 0.171" versus 0.175" x 0.160"), requiring verification that the PCB pad layout accommodates the substitute part. Electrical performance is equivalent for applications operating at or below 9.5 A continuous current.

Q: What are the key differences between the metal composite and ferrite core materials?

A: The MPI4040R4-R22-R and MPI4020V2-R22-R use metal composite cores, while the ASPI-7318-R22M-T uses ferrite. Both materials provide shielding and support the 220 nH inductance specification. Core material selection affects saturation characteristics, temperature stability, and frequency response. The ferrite-core ASPI-7318-R22M-T exhibits higher saturation current (34 A) and lower DC resistance (3.1 mOhm) compared to the metal composite alternatives.

Q: Is the ASPI-7318-R22M-T suitable for applications with space constraints?

A: The ASPI-7318-R22M-T has a larger footprint (0.287" x 0.268" / 7.30mm x 6.80mm) and greater height (0.118" / 3.00mm) compared to the original part (0.175" x 0.160" / 4.45mm x 4.06mm with 0.079" / 2.00mm height). This part is suitable only for applications where PCB space permits the larger package dimensions. The MPI4020V2-R22-R is the preferred choice for space-constrained designs.

Q: Are both substitute parts compliant with current regulatory standards?

A: Both the MPI4020V2-R22-R and ASPI-7318-R22M-T are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components. The original MPI4040R4-R22-R regulatory status is not specified in the provided data.

Q: What is the significance of the inductance test frequency difference between 100 kHz and 200 kHz?

A: The MPI4040R4-R22-R and MPI4020V2-R22-R specify inductance measurement at 100 kHz, while the ASPI-7318-R22M-T specifies 200 kHz. Both parts maintain the 220 nH nominal inductance with ±20% tolerance. The test frequency difference reflects different measurement standards but does not affect the 220 nH specification at the application frequency. Verify that the application frequency aligns with the component's self-resonant frequency characteristics if operating near the upper frequency limits.

Q: How do current rating differences affect component selection?

A: The MPI4040R4-R22-R is rated for 10.1 A continuous current with 15 A saturation. The MPI4020V2-R22-R is rated for 9.5 A continuous with 12.5 A saturation. The ASPI-7318-R22M-T is rated for 22 A continuous with 34 A saturation. Select the substitute based on the application's actual current requirements. For applications requiring continuous current above 9.5 A, the ASPI-7318-R22M-T is necessary. For applications at or below 9.5 A, the MPI4020V2-R22-R provides equivalent performance.

Q: What packaging format is used for the MPI4020V2-R22-R?

A: The MPI4020V2-R22-R is supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes. The original MPI4040R4-R22-R packaging format is not specified in the provided data.