DRA125-2R2-R Equivalent & Substitute Parts

Part Overview

The DRA125-2R2-R is a 2.2 µH shielded wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 10.61 A continuous current with a saturation current of 15.09 A and a DC resistance of 4.8 mOhm. The part is classified as Active product status and carries AEC-Q200 automotive qualification. 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

DRA125-2R2-R

Eaton - Electronics DivisionIn Stock: 814DRA125-2R2-R Datasheet

Current PartRFQ

SRR1260A-2R2Y

Bourns Inc.In Stock: 1500SRR1260A-2R2Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DRA125-2R2-R is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Inductance value must be 2.2 µH
• Current rating must meet or exceed 10.61 A continuous operation
• Saturation current must support the application's peak current demands
• DC resistance must remain within acceptable limits for thermal and efficiency requirements
• Shielding configuration must be maintained to prevent electromagnetic interference

Mechanical Compatibility Criteria:

• Surface mount package type required
• Physical footprint must be 12.50 x 12.50 mm (0.492" x 0.492")
• Height must not exceed application constraints
• Tape & Reel packaging for automated assembly

Compliance and Environmental Criteria:

• AEC-Q200 automotive qualification required
• RoHS3 compliance mandatory
• Operating temperature range must support -40°C to 165°C minimum
• Moisture sensitivity level MSL 1 (Unlimited) preferred

The SRR1260A-2R2Y from Bourns Inc. meets the core electrical and mechanical requirements with documented trade-offs in specific parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (DRA125-2R2-R): The DRA125-2R2-R is the specified component and should be used when available. This part provides the highest current rating (10.61 A), lowest DC resistance (4.8 mOhm), and widest operating temperature range (-40°C to 165°C). These characteristics make it optimal for high-current, high-reliability applications requiring minimal thermal dissipation.

Substitute Part Selection (SRR1260A-2R2Y): The SRR1260A-2R2Y from Bourns Inc. is a qualified substitute when the DRA125-2R2-R is unavailable. Both parts carry AEC-Q200 automotive qualification and RoHS3 compliance. The Bourns part is suitable for applications where:

• Continuous current requirements do not exceed 8.2 A
• Saturation current margin of 8.5 A is acceptable
• Higher DC resistance (10.5 mOhm) and associated thermal dissipation are tolerable
• Operating temperature does not exceed 125°C
• Inductance tolerance of ±30% meets circuit requirements

Critical Limitations of Substitute: The SRR1260A-2R2Y cannot be used in applications requiring the full 10.61 A current rating or 15.09 A saturation performance of the primary part. The higher DC resistance will increase power dissipation and heat generation. The reduced maximum operating temperature (125°C versus 165°C) restricts use in high-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can the SRR1260A-2R2Y replace the DRA125-2R2-R in all applications?

A: No. The SRR1260A-2R2Y has a lower current rating (8.2 A versus 10.61 A) and lower saturation current (8.5 A versus 15.09 A). It is suitable only for applications operating below these current limits. The higher DC resistance (10.5 mOhm versus 4.8 mOhm) also increases power dissipation.

Q: What is the impact of the different inductance tolerances?

A: The DRA125-2R2-R has ±20% tolerance while the SRR1260A-2R2Y has ±30% tolerance. For circuits with tight inductance specifications, the wider tolerance of the Bourns part may require circuit validation or tuning adjustments.

Q: Are both parts qualified for automotive applications?

A: Yes. Both the DRA125-2R2-R and SRR1260A-2R2Y carry AEC-Q200 automotive qualification and are RoHS3 compliant. Both have MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What is the significance of the 0.5 mm height difference?

A: The DRA125-2R2-R has a maximum seated height of 6.00 mm while the SRR1260A-2R2Y is 6.50 mm. This 0.5 mm difference must be verified against PCB layout constraints, clearance requirements, and conformal coating processes before substitution.

Q: How does the core type difference affect performance?

A: The DRA125-2R2-R uses a standard wirewound core while the SRR1260A-2R2Y uses a drum core wirewound construction. The drum core design in the Bourns part contributes to its different electrical characteristics, including higher DC resistance and lower saturation current.

Q: What is the maximum operating temperature limitation for the substitute part?

A: The SRR1260A-2R2Y is rated to 125°C maximum, compared to 165°C for the DRA125-2R2-R. Applications requiring operation above 125°C must use the primary part.

Q: Are both parts available in Tape & Reel packaging?

A: Yes. Both the DRA125-2R2-R and SRR1260A-2R2Y are supplied in Tape & Reel (TR) packaging suitable for automated assembly processes.