MPI4040R4-1R0-R Equivalent & Substitute Parts

Part Overview

The MPI4040R4-1R0-R is a 1 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This component is rated for 5.7 A continuous current with a DC resistance of 17 mOhm and operates across the temperature range of -55°C to 125°C. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain the 1 µH inductance specification and shielded drum core construction while accommodating variations in current rating, DC resistance, and package dimensions within acceptable engineering tolerances.

Substiute Parts

MPI4040R4-1R0-R

Eaton - Electronics DivisionIn Stock: 753MPI4040R4-1R0-R Datasheet

Current PartRFQ

MPI4020V2-1R0-R

Eaton - Electronics DivisionIn Stock: 6463MPI4020V2-1R0-R Datasheet

DirectRFQ

B82464G4102M000

EPCOS - TDK ElectronicsIn Stock: 2846B82464G4102M000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MPI4040R4-1R0-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 1 µH (fixed requirement)
• Inductance tolerance: ±20% (fixed requirement)
• Type: Drum core, wirewound construction (fixed requirement)
• Shielding: Shielded configuration (fixed requirement)
• Mounting type: Surface mount (fixed requirement)
• Inductance frequency test: 100 kHz (fixed requirement)

Secondary Compatibility Parameters:

• Current rating: Minimum 5.7 A (equal or higher acceptable)
• DC resistance: Maximum 17 mOhm (lower values acceptable; higher values require thermal analysis)
• Saturation current (Isat): Minimum 8.2 A (equal or higher acceptable)
• Operating temperature range: Minimum -55°C to 125°C (equal or wider range acceptable)

Package Considerations:

• Surface mount package compatibility with PCB layout constraints
• Physical dimensions and height clearance requirements

The identified substitute parts meet the primary matching criteria and demonstrate compatibility within the secondary parameters, with documented variations noted in the parameter comparison table.

Parameter Comparison

Engineering Selection Recommendations

MPI4020V2-1R0-R (Eaton - Electronics Division):

This substitute is an active product from the same manufacturer (Eaton - Electronics Division) and represents the primary equivalent option. It maintains identical inductance (1 µH), tolerance (±20%), operating temperature range (-55°C to 125°C), and mounting type. The current rating is increased to 6.5 A, exceeding the original 5.7 A specification. The DC resistance increases to 24 mOhm maximum, representing a 41% increase from the original 17 mOhm specification. The saturation current (Isat) is rated at 7 A, which is 1.2 A lower than the original 8.2 A specification. Physical dimensions are comparable with identical height (2.00mm maximum seated height). This part is ROHS3 compliant and carries unlimited moisture sensitivity level (MSL 1). Selection of this substitute is appropriate for applications where the increased DC resistance and reduced saturation current do not create thermal or performance constraints.

B82464G4102M000 (EPCOS - TDK Electronics):

This substitute is an active product from EPCOS - TDK Electronics and provides the lowest DC resistance (7 mOhm maximum) and highest current rating (7.5 A) among available options. It maintains the 1 µH inductance and ±20% tolerance specification. The saturation current (Isat) is rated at 10 A, exceeding the original 8.2 A specification. The operating temperature range extends to 150°C maximum, providing 25°C additional headroom above the original specification. The core material is ferrite rather than metal composite. Physical dimensions are significantly larger (10.40mm x 10.40mm footprint with 4.80mm maximum height), requiring PCB layout verification for space constraints. This part carries AEC-Q200 automotive qualification, ROHS3 compliance, and unlimited moisture sensitivity level (MSL 1). Selection of this substitute is appropriate for applications requiring superior thermal performance (lower DCR), higher current capacity, or extended temperature operation, provided PCB space accommodates the larger package dimensions.

Frequently Asked Questions (FAQ)

Q: Can MPI4020V2-1R0-R directly replace MPI4040R4-1R0-R in existing designs?

A: MPI4020V2-1R0-R maintains the same inductance value (1 µH), tolerance (±20%), operating temperature range (-55°C to 125°C), and identical maximum seated height (2.00mm). Physical footprint dimensions are comparable. However, the DC resistance increases from 17 mOhm to 24 mOhm maximum, and saturation current decreases from 8.2 A to 7 A. Thermal analysis is required to confirm the increased DC resistance does not exceed thermal design limits. PCB layout compatibility should be verified due to minor dimensional variations.

Q: Can B82464G4102M000 directly replace MPI4040R4-1R0-R in existing designs?

A: B82464G4102M000 maintains the same inductance value (1 µH) and tolerance (±20%). However, the package dimensions are significantly larger (10.40mm x 10.40mm footprint versus 4.45mm x 4.06mm, and 4.80mm height versus 2.00mm height). PCB layout verification is mandatory before selection. The ferrite core material differs from the original metal composite core. The part offers superior electrical performance (7 mOhm DCR, 7.5 A current rating, 10 A Isat) and extended temperature range (-55°C to 150°C). This substitute is suitable only for applications with available PCB space.

Q: What is the significance of DC resistance differences between these parts?

A: DC resistance directly affects power dissipation and thermal performance. The original MPI4040R4-1R0-R specifies 17 mOhm. MPI4020V2-1R0-R increases this to 24 mOhm maximum (41% increase), while B82464G4102M000 reduces it to 7 mOhm maximum (59% decrease). At the rated current of 5.7 A, power dissipation in the original part is approximately 0.55 W. The MPI4020V2-1R0-R would dissipate approximately 0.78 W at the same current, requiring thermal analysis. The B82464G4102M000 would dissipate approximately 0.23 W, providing superior thermal performance.

Q: Are there package compatibility issues between these inductors?

A: Yes. The MPI4040R4-1R0-R uses a 1816 (4540 Metric) package with dimensions 4.45mm x 4.06mm and 2.00mm maximum height. The MPI4020V2-1R0-R uses a nonstandard 2-lead package with dimensions 4.06mm x 4.35mm and identical 2.00mm maximum height, requiring PCB footprint verification. The B82464G4102M000 uses a significantly larger nonstandard package (10.40mm x 10.40mm footprint with 4.80mm height), which may not fit existing PCB layouts designed for the original part. Physical space verification is mandatory before substitution.

Q: What compliance certifications apply to these substitute parts?

A: MPI4020V2-1R0-R is ROHS3 compliant and REACH unaffected. B82464G4102M000 is ROHS3 compliant, REACH unaffected, and carries AEC-Q200 automotive qualification. The original MPI4040R4-1R0-R compliance information is not provided in the technical data. For applications requiring automotive qualification, B82464G4102M000 is the only option with documented AEC-Q200 rating.

Q: How do saturation current specifications affect part selection?

A: Saturation current (Isat) defines the current level at which the inductor begins to lose its inductance value due to core saturation. The original MPI4040R4-1R0-R specifies 8.2 A Isat. MPI4020V2-1R0-R specifies 7 A Isat (1.2 A lower), while B82464G4102M000 specifies 10 A Isat (1.8 A higher). For applications operating near the rated current of 5.7 A, the reduced Isat of MPI4020V2-1R0-R may present a margin concern. B82464G4102M000 provides superior saturation margin. Current transient analysis is required to confirm adequate saturation margin for the selected substitute.

Q: What is the impact of core material differences?

A: The original MPI4040R4-1R0-R uses metal composite core material. MPI4020V2-1R0-R maintains metal composite core construction. B82464G4102M000 uses ferrite core material. Core material affects frequency response, temperature stability, and saturation characteristics. Ferrite cores (B82464G4102M000) typically provide higher self-resonant frequency (135 MHz versus 65 MHz for MPI4020V2-1R0-R) and different temperature coefficients. Application-specific frequency response requirements should be evaluated before selecting B82464G4102M000.