Eaton DR1040-5R2-R Equivalent & Substitute Parts

Part Overview

The Eaton DR1040-5R2-R is a 5.2 µH shielded drum core wirewound inductor rated for 5.4 A continuous current with a maximum DC resistance of 17 mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is specified for 100 kHz inductance testing. The part is actively manufactured and maintains full RoHS3 compliance with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

DR1040-5R2-R

Eaton - Electronics DivisionIn Stock: 1318DR1040-5R2-R Datasheet

Current PartRFQ

PF0560.522NLT

Pulse ElectronicsIn Stock: 3406PF0560.522NLT Datasheet

DirectRFQ

SRU1038-5R2Y

Bourns Inc.In Stock: 2443SRU1038-5R2Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Eaton DR1040-5R2-R are classified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Critical Matching Parameters:

• Inductance value: 5.2 µH (exact match required)
• Inductance tolerance: ±30% (identical specification)
• Current rating: 5.4 A minimum (direct substitutes maintain this rating)
• Shielding: Shielded configuration (electromagnetic containment requirement)
• Mounting type: Surface Mount (PCB assembly compatibility)
• Operating temperature range: -40°C to 125°C (thermal envelope)
• Inductance test frequency: 100 kHz (measurement standard)

Secondary Compatibility Parameters:

• DC resistance: Allowable variation within design margin
• Package dimensions: Nonstandard form factor with acceptable footprint tolerance
• RoHS3 compliance: Regulatory requirement maintained across all substitutes
• MSL rating: Level 1 (Unlimited) for moisture sensitivity

The substitute parts listed below satisfy these criteria and are classified as direct or similar equivalents based on parameter deviation magnitude.

Parameter Comparison

Engineering Selection Recommendations

Pulse Electronics PF0560.522NLT (Direct Substitute)

The PF0560.522NLT maintains identical inductance (5.2 µH), current rating (5.4 A), saturation current (5.5 A), and operating temperature range (-40°C to 125°C) as the Eaton DR1040-5R2-R. DC resistance increases from 17 mOhm to 22 mOhm maximum, representing a 5 mOhm differential. Physical dimensions are nearly identical (10.40 x 10.30 mm versus 10.50 x 10.30 mm), with matching seated height of 4.00 mm. Both parts are ROHS3 compliant with MSL 1 rating. This substitute is suitable for applications where the 5 mOhm DCR increase is within design tolerance.

Bourns Inc. SRU1038-5R2Y (Similar Substitute)

The SRU1038-5R2Y provides 5.2 µH inductance with ±30% tolerance and maintains the full -40°C to 125°C operating temperature range. Current rating is reduced to 4.6 A with saturation current of 4.8 A, representing a 0.8 A reduction from the primary part specification. DC resistance is 22 mOhm maximum. Physical footprint is slightly smaller (10.00 x 10.00 mm) with marginally increased seated height (4.10 mm). ROHS3 compliance and MSL 1 rating are maintained. This substitute is applicable only in applications where the reduced current rating (4.6 A versus 5.4 A) does not exceed design requirements.

Both substitute parts maintain active product status, full regulatory compliance, and equivalent shielding characteristics. Selection between substitutes depends on current capacity requirements and DC resistance tolerance margins specific to the application circuit.

Frequently Asked Questions (FAQ)

Q: Can the Pulse Electronics PF0560.522NLT replace the Eaton DR1040-5R2-R in all applications?

A: The PF0560.522NLT is electrically equivalent in inductance, current rating, and saturation current. The primary difference is DC resistance: 22 mOhm maximum versus 17 mOhm maximum. Substitution is valid when the additional 5 mOhm resistance does not exceed circuit design margins for power loss or thermal performance.

Q: What is the current rating limitation of the Bourns SRU1038-5R2Y?

A: The SRU1038-5R2Y is rated for 4.6 A continuous current with 4.8 A saturation current, compared to 5.4 A and 5.5 A respectively for the Eaton DR1040-5R2-R. This substitute is suitable only for applications where peak current demand does not exceed 4.6 A.

Q: Are all three parts physically interchangeable on the PCB?

A: Physical dimensions are similar but not identical. The Eaton part measures 10.50 x 10.30 mm, the Pulse part measures 10.40 x 10.30 mm, and the Bourns part measures 10.00 x 10.00 mm. All three have seated heights between 4.00 and 4.10 mm. Verify PCB footprint tolerance before substitution.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. The Eaton DR1040-5R2-R, Pulse Electronics PF0560.522NLT, and Bourns Inc. SRU1038-5R2Y are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the significance of the 100 kHz inductance test frequency?

A: The 100 kHz test frequency is the standard measurement condition at which the 5.2 µH inductance value is specified and verified for all three parts. This ensures consistent inductance characterization across different manufacturers.

Q: Can DC resistance variation affect circuit performance?

A: Yes. DC resistance contributes to power dissipation and thermal generation in the inductor. The Eaton part specifies 17 mOhm maximum, while both substitute parts specify 22 mOhm maximum. In high-current applications, this 5 mOhm difference may result in measurable additional heat generation. Verify thermal budget compatibility before substitution.

Q: Are there any frequency-dependent performance differences?

A: The Pulse Electronics PF0560.522NLT specifies a self-resonant frequency of 34 MHz, while the Bourns SRU1038-5R2Y specifies 30 MHz. The Eaton part does not provide this specification. For applications operating near or above these frequencies, verify that resonant behavior does not impact circuit function.