MPIA4040R3-100-R Equivalent & Substitute Parts

Part Overview

The MPIA4040R3-100-R is a 10 µH shielded molded inductor manufactured by Eaton - Electronics Division. This component is rated for 1.5 A continuous current with a maximum DC resistance of 213 mOhm and operates across the temperature range of -55°C to 125°C. The part carries AEC-Q200 qualification and is classified as obsolete. Due to its obsolete status, equivalent substitute parts are necessary for ongoing design support and procurement continuity.

Substiute Parts

MPIA4040R3-100-R

Eaton - Electronics DivisionIn Stock: 720MPIA4040R3-100-R Datasheet

Current PartRFQ

MPIA4020V2-100-R

Eaton - Electronics DivisionIn Stock: 1181MPIA4020V2-100-R Datasheet

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B82462G4103M000

EPCOS - TDK ElectronicsIn Stock: 14871B82462G4103M000 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MPIA4040R3-100-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 10 µH (exact match required)
• Inductance tolerance: ±20% (must match or be tighter)
• Shielding: Shielded (electromagnetic containment requirement)
• Mounting type: Surface Mount (PCB assembly compatibility)
• Inductance test frequency: 100 kHz (measurement standard alignment)

Secondary Compatibility Criteria:

• Current rating: Minimum 1.5 A (must meet or exceed application requirement)
• DC resistance: Lower values preferred for reduced power dissipation
• Operating temperature range: Must cover -55°C to 125°C minimum
• AEC-Q200 qualification: Automotive-grade reliability standard

The two substitute parts listed below satisfy the primary matching criteria and maintain compatibility with the original part's electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

MPIA4020V2-100-R (Eaton - Electronics Division)

This substitute maintains the same manufacturer lineage as the original MPIA4040R3-100-R, belonging to the MPIA40-V2 series. It provides a current rating of 1.7 A, exceeding the original 1.5 A requirement. The part is classified as Active, ensuring long-term availability and supply chain stability. AEC-Q200 qualification is maintained. The DC resistance of 281 mOhm is higher than the original 213 mOhm, representing a trade-off in power dissipation characteristics. Physical dimensions are slightly larger (4.95mm x 4.20mm versus 4.45mm x 4.06mm), and the package type is specified as 2-SMD, J-Lead. This substitute is suitable for applications where the increased current rating and active product status outweigh the higher DCR and larger footprint.

B82462G4103M000 (EPCOS - TDK Electronics)

This substitute offers the lowest DC resistance at 62 mOhm Max, providing superior power efficiency compared to the original part. The extended operating temperature range of -55°C to 150°C exceeds the original specification. AEC-Q200 qualification and RoHS3 compliance are confirmed. The part is classified as Active with extensive inventory availability. The core material differs (Ferrite versus Metal Composite), and the construction type is Drum Core, Wirewound rather than Molded. Physical dimensions are larger (6.30mm x 6.30mm), and the saturation current is lower at 1.3 A. This substitute is appropriate for applications prioritizing low DC resistance and extended temperature operation, provided PCB layout accommodates the larger footprint.

Frequently Asked Questions (FAQ)

Q: Can MPIA4020V2-100-R directly replace MPIA4040R3-100-R without circuit modification?

A: Both parts share identical inductance (10 µH), tolerance (±20%), shielding, operating temperature range, and AEC-Q200 qualification. The MPIA4020V2-100-R provides higher current rating (1.7 A versus 1.5 A) and maintains the same core material (Metal Composite). However, the DC resistance is higher (281 mOhm versus 213 mOhm), which increases power dissipation. Physical dimensions are slightly larger. Direct substitution is electrically feasible if PCB layout permits the size increase and if the higher DCR does not violate thermal or efficiency requirements.

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

A: MPIA4020V2-100-R is a Molded inductor with Metal Composite core, while B82462G4103M000 is a Drum Core, Wirewound inductor with Ferrite core. B82462G4103M000 offers significantly lower DC resistance (62 mOhm versus 281 mOhm) and extended temperature range (-55°C to 150°C). However, B82462G4103M000 has a larger footprint (6.30mm x 6.30mm versus 4.95mm x 4.20mm) and lower saturation current (1.3 A versus 2.2 A). Selection depends on whether power efficiency or compact size is prioritized.

Q: Is package compatibility a concern when substituting these parts?

A: Yes. The original MPIA4040R3-100-R uses a Nonstandard package (4.45mm x 4.06mm, 1.80mm height). MPIA4020V2-100-R uses a 2-SMD, J-Lead package (4.95mm x 4.20mm, 2.00mm height), requiring PCB footprint verification. B82462G4103M000 uses a Nonstandard package (6.30mm x 6.30mm, 3.00mm height), which is significantly larger. PCB layout must be reviewed to confirm clearance and routing compatibility before substitution.

Q: Do all three parts meet automotive qualification standards?

A: Yes. MPIA4040R3-100-R, MPIA4020V2-100-R, and B82462G4103M000 all carry AEC-Q200 qualification, confirming suitability for automotive-grade applications. Additionally, B82462G4103M000 is RoHS3 Compliant and REACH Unaffected, providing additional regulatory compliance documentation.

Q: Which substitute is recommended for high-temperature applications?

A: B82462G4103M000 supports an extended operating temperature range of -55°C to 150°C, compared to -55°C to 125°C for both the original part and MPIA4020V2-100-R. If the application requires operation above 125°C, B82462G4103M000 is the appropriate choice, provided the larger footprint is accommodated.

Q: How does DC resistance affect circuit performance?

A: DC resistance directly impacts power dissipation and voltage drop across the inductor. The original MPIA4040R3-100-R has 213 mOhm DCR. MPIA4020V2-100-R increases this to 281 mOhm, resulting in higher power loss. B82462G4103M000 reduces DCR to 62 mOhm, significantly lowering power dissipation. For applications sensitive to efficiency or thermal management, B82462G4103M000 is preferable. For applications with relaxed power dissipation requirements, MPIA4020V2-100-R is acceptable.

Q: What is the significance of saturation current differences?

A: Saturation current (Isat) indicates the current level at which the inductor's inductance begins to degrade. The original part has Isat of 3.8 A, MPIA4020V2-100-R has 2.2 A, and B82462G4103M000 has 1.3 A. For applications with transient current spikes or high peak currents, the original part or MPIA4020V2-100-R provides greater margin. B82462G4103M000 requires careful circuit analysis to ensure peak currents remain below 1.3 A to maintain inductance stability.