MPI4040R2-R47-R Equivalent & Substitute Parts

Part Overview

The MPI4040R2-R47-R is a 470 nH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 6.4 A continuous current with a DC resistance of 13 mOhm and operates across the temperature range of -55°C to 125°C. The part is classified as obsolete, making identification of suitable equivalent components essential for ongoing design support, production continuity, and system maintenance.

Substiute Parts

MPI4040R2-R47-R

Eaton - Electronics DivisionIn Stock: 895MPI4040R2-R47-R Datasheet

Current PartRFQ

MPI4015V2-R47-R

Eaton - Electronics DivisionIn Stock: 2608MPI4015V2-R47-R Datasheet

DirectRFQ

SRP7028A-R47M

Bourns Inc.In Stock: 2408SRP7028A-R47M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MPI4040R2-R47-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 470 nH ±20%
• Inductance tolerance: ±20%
• Shielding configuration: Shielded
• Core type: Drum core wirewound
• Mounting type: Surface mount
• Operating temperature range: Minimum -55°C to 125°C coverage

Secondary Compatibility Factors:

• Current rating: Equal to or greater than 6.4 A
• DC resistance: Acceptable within circuit design margins
• Saturation current: Sufficient for application requirements
• Physical footprint: Compatible with PCB layout constraints
• Moisture sensitivity: MSL 1 or equivalent

Two substitute parts meet these criteria with varying performance characteristics and availability status.

Parameter Comparison

Engineering Selection Recommendations

MPI4015V2-R47-R (Direct Substitute - Recommended for Pin-Compatible Replacement)

The MPI4015V2-R47-R is the primary equivalent for the obsolete MPI4040R2-R47-R. Both components are manufactured by Eaton - Electronics Division and share identical inductance specifications (470 nH ±20%), operating temperature range (-55°C to 125°C), and physical height (1.50 mm). The MPI4015V2-R47-R provides higher current rating (7.8 A versus 6.4 A) and maintains comparable DC resistance (14 mOhm Max versus 13 mOhm). This part is currently in active production status with substantial inventory availability (2542 pieces). The MPI4015V2-R47-R is RoHS Compliant and carries MSL 1 rating. Footprint dimensions are nearly identical (4.06 mm L × 4.35 mm W versus 4.45 mm L × 4.06 mm W), making this the optimal choice for direct PCB layout substitution. Self-resonant frequency is specified at 98 MHz.

SRP7028A-R47M (Performance-Enhanced Substitute - For Higher Current Applications)

The SRP7028A-R47M manufactured by Bourns Inc. provides the same 470 nH inductance with significantly enhanced electrical performance. This component delivers 17.5 A current rating with substantially lower DC resistance (4.2 mOhm Max), resulting in reduced power dissipation and improved thermal characteristics. The SRP7028A-R47M uses carbonyl powder core material and extends the operating temperature range to -40°C to 150°C. This part carries AEC-Q200 automotive qualification and ROHS3 compliance. The primary design consideration is physical footprint: the SRP7028A-R47M measures 7.30 mm L × 6.60 mm W × 3.00 mm H, requiring PCB layout modification compared to the original MPI4040R2-R47-R. This substitute is suitable for applications requiring higher current capacity, lower losses, or automotive-grade reliability. Inventory availability is strong (2300 pieces).

Frequently Asked Questions (FAQ)

Q: Can the MPI4015V2-R47-R be used as a direct replacement without PCB modification?

A: Yes. The MPI4015V2-R47-R maintains the same 1.50 mm seated height and nearly identical footprint dimensions (4.06 mm L × 4.35 mm W versus 4.45 mm L × 4.06 mm W). Both components are Eaton products with identical inductance, tolerance, and operating temperature specifications. No PCB layout changes are required.

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

A: The MPI4015V2-R47-R is a direct Eaton equivalent with minimal performance differences. The SRP7028A-R47M is a Bourns alternative offering superior current handling (17.5 A), lower DC resistance (4.2 mOhm), and automotive qualification (AEC-Q200), but requires PCB footprint modification due to larger physical dimensions (7.30 mm × 6.60 mm × 3.00 mm).

Q: Is the MPI4015V2-R47-R RoHS compliant?

A: Yes. The MPI4015V2-R47-R is RoHS Compliant. The original MPI4040R2-R47-R does not specify RoHS status.

Q: Can the SRP7028A-R47M be used in applications requiring -55°C minimum temperature operation?

A: No. The SRP7028A-R47M operating temperature range is -40°C to 150°C. For applications requiring -55°C operation, the MPI4015V2-R47-R (-55°C to 125°C) is the appropriate substitute.

Q: What is the saturation current difference between the main part and substitutes?

A: The MPI4040R2-R47-R has Isat of 12.2 A. The MPI4015V2-R47-R has Isat of 9 A, while the SRP7028A-R47M has Isat of 26 A. Circuit design must account for these differences in peak current handling capability.

Q: Are all three parts MSL 1 rated?

A: Yes. The MPI4040R2-R47-R, MPI4015V2-R47-R, and SRP7028A-R47M all carry MSL 1 (Unlimited) moisture sensitivity level rating.

Q: What is the self-resonant frequency of each part?

A: The MPI4040R2-R47-R does not specify self-resonant frequency. The MPI4015V2-R47-R has SRF of 98 MHz. The SRP7028A-R47M has SRF of 80 MHz.

Q: Which substitute offers the lowest DC resistance?

A: The SRP7028A-R47M provides the lowest DC resistance at 4.2 mOhm Max, compared to 13 mOhm for the original part and 14 mOhm Max for the MPI4015V2-R47-R. Lower resistance reduces power dissipation and heat generation.