DR124-8R2-R Equivalent & Substitute Parts

Part Overview

The DR124-8R2-R is an 8.2 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 5.2 A continuous current with a maximum DC resistance of 26 mOhm and operates across the temperature range of -40°C to 125°C. The part maintains Active product status and is ROHS3 compliant.

Substitute parts are identified when equivalent electrical and mechanical specifications are available from alternative manufacturers, enabling procurement flexibility and supply chain continuity while maintaining circuit performance within specified tolerances.

Substiute Parts

DR124-8R2-R

Eaton - Electronics DivisionIn Stock: 1130DR124-8R2-R Datasheet

Current PartRFQ

SRR1240-8R2M

Bourns Inc.In Stock: 2279SRR1240-8R2M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DR124-8R2-R is determined by the following critical parameters:

Electrical Equivalence Criteria:

• Inductance value: 8.2 µH (within ±20% tolerance specification)
• Core material: Ferrite shielded drum core construction
• Inductance test frequency: 100 kHz
• Operating temperature range: -40°C to 125°C minimum

Mechanical Compatibility Criteria:

• Mounting type: Surface Mount
• Physical dimensions: 12.50 mm L x 12.50 mm W x 4.50 mm H (Nonstandard package)
• Packaging format: Tape & Reel (TR)

Regulatory Compliance:

• RoHS3 compliance required
• Moisture Sensitivity Level: 1 (Unlimited)

The SRR1240-8R2M from Bourns Inc. satisfies all substitution criteria through matching inductance value, ferrite core material, identical physical dimensions, surface mount configuration, and equivalent regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: DR124-8R2-R

The DR124-8R2-R maintains Active product status with confirmed inventory availability (1066 pcs). This part is the preferred selection when the 5.2 A current rating requirement is specified in circuit design.

Substitute Part: SRR1240-8R2M

The SRR1240-8R2M from Bourns Inc. is qualified as a direct substitute when supply constraints affect the primary part. This substitute carries Active product status with higher inventory availability (2174 pcs). The SRR1240-8R2M is suitable for applications where the circuit current requirement does not exceed 4.5 A continuous operation.

Both parts maintain identical regulatory compliance (ROHS3), equivalent thermal operating ranges, and matching physical footprints for PCB layout compatibility. Selection between these parts is determined by application current requirements and supply availability.

Frequently Asked Questions (FAQ)

Q: Can the SRR1240-8R2M replace the DR124-8R2-R in all applications?

A: The SRR1240-8R2M is suitable for applications where circuit current does not exceed 4.5 A. The primary part DR124-8R2-R supports 5.2 A continuous current. Verify circuit current requirements before substitution.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts measure 12.50 mm length x 12.50 mm width x 4.50 mm height (seated). PCB footprint and mounting hole patterns are identical, enabling direct board-level substitution without layout modification.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the DR124-8R2-R and SRR1240-8R2M are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Both parts satisfy equivalent environmental and compliance specifications.

Q: What is the inductance tolerance for these parts?

A: Both parts carry ±20% inductance tolerance at the 100 kHz test frequency. The nominal inductance value is 8.2 µH for both components.

Q: Are these parts available in different packaging formats?

A: Both parts are supplied in Tape & Reel (TR) packaging format. No alternative packaging options are specified for these part numbers.

Q: What is the difference in DC resistance between these parts?

A: The DR124-8R2-R specifies 26 mOhm maximum DC resistance, while the SRR1240-8R2M specifies 27 mOhm maximum. This 1 mOhm difference is within normal manufacturing variation for this component category.