MP2-3R3-R Equivalent & Substitute Parts Reference

Part Overview

The MP2-3R3-R is a 3.3 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division, part of the MICRO-PAC™ series. This surface mount component is rated for 1.25 A continuous current with a maximum DC resistance of 156 mOhm and operates across the temperature range of -40°C to 85°C. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

MP2-3R3-R

Eaton - Electronics DivisionIn Stock: 848MP2-3R3-R Datasheet

Current PartRFQ

MP2A-3R3-R

Eaton - Electronics DivisionIn Stock: 3618MP2A-3R3-R Datasheet

SimilarRFQ

AX97-103R3

Triad MagneticsIn Stock: 1086AX97-103R3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP2-3R3-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 3.3 µH (fixed)
• Inductance tolerance: ±20% (fixed)
• Mounting type: Surface Mount (fixed)
• Operating temperature range: -40°C to 85°C (fixed)
• Shielding configuration: Unshielded (fixed)

Secondary Compatibility Parameters:

• Current rating: Equal to or greater than 1.25 A
• DC resistance: Lower or equal to 156 mOhm
• Physical footprint: Compatible with 7.50 × 5.20 mm base dimensions
• Core material: Ferrite or equivalent magnetic material

Substitute parts must satisfy all primary matching criteria and maintain compatibility with secondary parameters to ensure functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

MP2A-3R3-R (Eaton - Electronics Division):

This substitute is manufactured by the same original equipment manufacturer as the main part. It maintains identical inductance, tolerance, operating temperature range, and physical footprint. The MP2A-3R3-R offers improved electrical performance with 1.75 A current rating (40% higher than the main part) and reduced DC resistance of 98 mOhm (37% lower than the main part). The core material differs, utilizing Molybdenum Permalloy instead of Ferrite, which provides enhanced saturation characteristics at 2.23 A. The part is active in production and available in Tape & Reel packaging. RoHS compliance certification is provided. This substitute is the preferred choice for direct replacement in new designs and ongoing production.

AX97-103R3 (Triad Magnetics):

This substitute meets all primary matching criteria with identical inductance, tolerance, and operating temperature range. It provides the highest current rating at 2 A and the lowest DC resistance at 90 mOhm Max, delivering superior electrical performance. The core material is Ferrite, matching the main part. Physical dimensions differ slightly (7.30 × 4.78 × 3.23 mm versus 7.50 × 5.20 × 1.80 mm), with increased height that may require PCB layout verification. The part is active in production with ROHS3 compliance. This substitute is suitable for applications where the dimensional variation is acceptable and enhanced current handling is beneficial.

Frequently Asked Questions (FAQ)

Q: Can MP2A-3R3-R directly replace MP2-3R3-R without circuit modification?

A: Yes. Both parts share identical inductance (3.3 µH), tolerance (±20%), operating temperature range (-40 to 85°C), and physical footprint (7.50 × 5.20 × 1.80 mm). The MP2A-3R3-R provides improved performance with higher current rating and lower DC resistance. No circuit modification is required.

Q: What is the impact of different core materials (Ferrite vs. Molybdenum Permalloy)?

A: Core material affects saturation characteristics and frequency response. The MP2A-3R3-R uses Molybdenum Permalloy with saturation current of 2.23 A, compared to the main part's Ferrite core with saturation at 1.1 A. The AX97-103R3 uses Ferrite matching the main part. Selection depends on circuit current requirements and frequency response specifications.

Q: Are there packaging considerations when substituting these parts?

A: Yes. The main part uses nonstandard packaging. MP2A-3R3-R is supplied in Tape & Reel format, suitable for automated assembly. AX97-103R3 is supplied in Bulk packaging. Verify compatibility with your procurement and assembly processes.

Q: Does the height difference of AX97-103R3 affect PCB compatibility?

A: The AX97-103R3 has a seated height of 3.23 mm compared to 1.80 mm for the main part. This 1.43 mm increase requires verification of available PCB clearance and component placement constraints. Confirm compatibility with your specific board design before implementation.

Q: What compliance certifications are available for these substitutes?

A: MP2A-3R3-R carries RoHS Compliance certification. AX97-103R3 carries ROHS3 Compliance certification and is REACH Unaffected. Both meet EAR99 export classification. Verify compliance requirements for your application and region.

Q: Why is the main part MP2-3R3-R classified as obsolete?

A: Obsolete status indicates the part is no longer in active production. MP2A-3R3-R and AX97-103R3 are active alternatives that provide equivalent or superior functionality with ongoing manufacturer support and availability.