Equivalent & Substitute Parts for DR1050-220-R

Part Overview

The DR1050-220-R is a 22 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 3.12 A continuous current with a maximum DC resistance of 48.4 mOhm and operates across the temperature range of -40°C to 125°C. The part maintains Active product status and is RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or application-specific performance parameters within acceptable electrical and mechanical tolerances.

Substiute Parts

DR1050-220-R

Eaton - Electronics DivisionIn Stock: 956DR1050-220-R Datasheet

Current PartRFQ

CDRH105RNP-220NC

Sumida America Components Inc.In Stock: 1719CDRH105RNP-220NC Datasheet

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SRU1048-220Y

Bourns Inc.In Stock: 5402SRU1048-220Y Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DR1050-220-R are qualified based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 22 µH (fixed requirement)
• Inductance tolerance: ±30% (fixed requirement)
• Core material: Ferrite (fixed requirement)
• Shielding: Shielded configuration (fixed requirement)
• Mounting type: Surface Mount (fixed requirement)
• Packaging format: Tape & Reel (fixed requirement)
• RoHS compliance: ROHS3 Compliant (fixed requirement)

Secondary Compatibility Parameters:

• Current rating: Minimum 2.6 A (application-dependent; lower ratings acceptable if circuit design permits)
• DC resistance: Maximum 61 mOhm (higher values acceptable within circuit tolerance)
• Operating temperature range: Minimum -40°C to 100°C (narrower ranges acceptable if application operates within specified limits)
• Package dimensions: Nonstandard form factor with height seated maximum 5.10 mm (mechanical fit requirement)

The substitute parts CDRH105RNP-220NC and SRU1048-220Y satisfy all primary matching criteria and remain compatible within the specified secondary parameters.

Parameter Comparison

Engineering Selection Recommendations

DR1050-220-R (Primary Part): Maintains the highest current rating at 3.12 A with saturation current of 3 A. Offers the widest operating temperature range (-40°C to 125°C) and lowest DC resistance at 48.4 mOhm maximum. Active product status with full RoHS3 and REACH compliance. Suitable for applications requiring maximum current capacity and thermal performance.

CDRH105RNP-220NC (Sumida Substitute): Provides 2.9 A current rating with saturation at 2.95 A. DC resistance of 61 mOhm represents a 26% increase over the primary part. Operating temperature range limited to -40°C to 100°C. Active product status with full RoHS3 and REACH compliance. Suitable for applications operating within the narrower temperature range where the reduced current rating is acceptable.

SRU1048-220Y (Bourns Substitute): Provides 2.6 A current rating with saturation at 2 A. DC resistance of 42 mOhm is lower than the primary part, offering improved efficiency. Maintains the full operating temperature range of -40°C to 125°C. Active product status with full RoHS3 and REACH compliance. Includes measured Q factor of 22 at 2.52 MHz and self-resonant frequency of 12 MHz. Suitable for applications where lower DC resistance is beneficial and current requirements do not exceed 2.6 A.

All three parts maintain identical inductance values, tolerance specifications, ferrite core construction, shielded configuration, surface mount packaging, and regulatory compliance status.

Frequently Asked Questions (FAQ)

Q: Can CDRH105RNP-220NC replace DR1050-220-R in all applications?

A: CDRH105RNP-220NC is compatible when circuit design accommodates the reduced current rating of 2.9 A (versus 3.12 A) and the increased DC resistance of 61 mOhm (versus 48.4 mOhm). The narrower operating temperature range (-40°C to 100°C) requires verification that the application does not exceed 100°C ambient conditions.

Q: What are the mechanical compatibility considerations?

A: All three parts use nonstandard form factors with similar footprints. DR1050-220-R measures 10.50 x 10.30 mm with 5.00 mm seated height. CDRH105RNP-220NC measures 10.20 x 10.00 mm with 5.10 mm seated height. SRU1048-220Y measures 10.00 x 10.00 mm with 5.10 mm seated height. PCB layout and clearance requirements must accommodate these dimensional variations.

Q: Is SRU1048-220Y suitable for high-current applications?

A: SRU1048-220Y is rated for 2.6 A continuous current with 2 A saturation current. Applications requiring the full 3.12 A rating of the primary part must use DR1050-220-R or verify that circuit operation remains within the 2.6 A limit.

Q: How do DC resistance differences affect circuit performance?

A: DC resistance directly impacts power dissipation and voltage drop across the inductor. SRU1048-220Y at 42 mOhm dissipates less power than DR1050-220-R at 48.4 mOhm. CDRH105RNP-220NC at 61 mOhm dissipates more power. Circuit thermal analysis must account for these differences in high-current or continuous-duty applications.

Q: Are all parts suitable for RoHS and REACH-regulated applications?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for restricted substance compliance and chemical safety.

Q: What is the significance of the Q factor and self-resonant frequency listed for SRU1048-220Y?

A: The Q factor of 22 at 2.52 MHz and self-resonant frequency of 12 MHz characterize the inductor's frequency response and quality factor at specific test conditions. These parameters are provided for SRU1048-220Y but not specified for the other parts. Applications sensitive to high-frequency performance should evaluate these characteristics against circuit requirements.

Q: Can these parts be used interchangeably in automated assembly?

A: All parts use Tape & Reel packaging suitable for automated pick-and-place assembly. Dimensional variations require verification that feeder settings and placement equipment accommodate the different footprint sizes. Nonstandard package geometry may require custom feeder configuration.