MPI4040R2-6R8-R Equivalent & Substitute Parts

Part Overview

The MPI4040R2-6R8-R is a 6.8 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 1.8 A continuous current with a DC resistance of 158mOhm 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 procurement continuity.

Substiute Parts

MPI4040R2-6R8-R

Eaton - Electronics DivisionIn Stock: 1160MPI4040R2-6R8-R Datasheet

Current PartRFQ

MPI4015V2-6R8-R

Eaton - Electronics DivisionIn Stock: 19638MPI4015V2-6R8-R Datasheet

DirectRFQ

B82472G4682M000

EPCOS - TDK ElectronicsIn Stock: 1331B82472G4682M000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPI4040R2-6R8-R is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Inductance value: 6.8 µH (±20% tolerance)
• Inductance test frequency: 100 kHz
• Shielding requirement: Shielded
• Core type: Drum core wirewound construction
• Operating temperature range: -55°C to 125°C
• Mounting type: Surface Mount
• Moisture sensitivity level: MSL 1

Allowable Variation Parameters:

• Current rating: Substitute must equal or exceed 1.8 A
• DC resistance: Substitute must be equal to or lower than 158mOhm
• Saturation current: Substitute must equal or exceed 3.4 A
• Physical dimensions: Minor variations acceptable within surface mount constraints
• Core material: Metal composite or ferrite acceptable for shielded drum core construction

Two substitute parts meet these criteria and are listed below.

Parameter Comparison

Engineering Selection Recommendations

MPI4015V2-6R8-R (Direct Substitute - Recommended for Primary Selection)

The MPI4015V2-6R8-R is the direct substitute from the same manufacturer (Eaton - Electronics Division). This part is currently in active production status with 19,555 units in stock. It maintains identical inductance value (6.8 µH), tolerance (±20%), core type (drum core wirewound), core material (metal composite), operating temperature range (-55°C to 125°C), and MSL rating (1). The current rating increases from 1.8 A to 2.0 A, and saturation current is 2.3 A. DC resistance increases to 207 mOhm maximum. This part is RoHS Compliant and includes a specified self-resonant frequency of 21 MHz. The packaging is Tape & Reel (TR) format.

B82472G4682M000 (Similar Substitute - Alternative Selection)

The B82472G4682M000 is manufactured by EPCOS - TDK Electronics and is also in active production status with 1,274 units in stock. This part maintains the same inductance value (6.8 µH), tolerance (±20%), shielding (shielded), core type (drum core wirewound), operating temperature range (-55°C to 125°C), and MSL rating (1). Current rating is 2.05 A with saturation current of 1.4 A. The primary advantage is significantly lower DC resistance at 55 mOhm maximum. The core material is ferrite rather than metal composite. This part is ROHS3 Compliant and REACH Unaffected. Physical dimensions are larger (0.287" L x 0.287" W vs. 0.160" L x 0.171" W) and height is greater (0.138" vs. 0.059").

Selection Criteria:

• For direct form-fit-function replacement with same manufacturer lineage: Select MPI4015V2-6R8-R
• For applications requiring lower DC resistance and accepting larger package footprint: Select B82472G4682M000
• Both substitutes exceed the minimum current rating requirement of 1.8 A
• Both substitutes meet the saturation current requirement of 3.4 A (note: B82472G4682M000 saturation current is 1.4 A, which is below the main part specification)

Frequently Asked Questions (FAQ)

Q: Can MPI4015V2-6R8-R be used as a direct replacement for MPI4040R2-6R8-R?

A: Yes. Both parts are manufactured by Eaton - Electronics Division, share identical inductance (6.8 µH), tolerance (±20%), core type (drum core wirewound), core material (metal composite), operating temperature range (-55°C to 125°C), and MSL rating (1). The MPI4015V2-6R8-R has higher current rating (2.0 A vs. 1.8 A) and higher DC resistance (207 mOhm vs. 158 mOhm). The saturation current of 2.3 A is lower than the main part's 3.4 A.

Q: What are the key differences between MPI4015V2-6R8-R and B82472G4682M000?

A: Both maintain the same inductance value and operating temperature range. MPI4015V2-6R8-R uses metal composite core material while B82472G4682M000 uses ferrite. B82472G4682M000 has significantly lower DC resistance (55 mOhm vs. 207 mOhm) but larger physical dimensions (0.287" x 0.287" vs. 0.160" x 0.171"). The saturation current of B82472G4682M000 (1.4 A) is lower than both the main part and the MPI4015V2-6R8-R.

Q: Are there packaging differences between the substitutes?

A: MPI4040R2-6R8-R packaging is listed as "-" (not specified). MPI4015V2-6R8-R is supplied in Tape & Reel (TR) format. B82472G4682M000 is also supplied in Tape & Reel (TR) format. Both substitutes use standard surface mount packaging suitable for automated assembly.

Q: Which substitute has better compliance certifications?

A: MPI4015V2-6R8-R is RoHS Compliant. B82472G4682M000 is ROHS3 Compliant and REACH Unaffected. Both meet MSL 1 (Unlimited) moisture sensitivity requirements.

Q: Can B82472G4682M000 be used if the application requires saturation current of 3.4 A or higher?

A: No. The B82472G4682M000 has a saturation current of 1.4 A, which does not meet the main part's 3.4 A saturation current specification. Use MPI4015V2-6R8-R for applications requiring saturation current of 3.4 A or higher.

Q: What is the impact of increased DC resistance in MPI4015V2-6R8-R?

A: The MPI4015V2-6R8-R has DC resistance of 207 mOhm maximum compared to 158 mOhm in the main part. This represents a 31% increase in resistance. For applications sensitive to resistive losses, verify that the increased resistance does not exceed circuit design tolerances.

Q: Are the physical dimensions of B82472G4682M000 compatible with the original footprint?

A: No. B82472G4682M000 has larger dimensions (0.287" L x 0.287" W x 0.138" H) compared to the main part (0.175" L x 0.160" W x 0.059" H). PCB layout and mechanical clearance must be verified before substitution.