DR127-2R2 Equivalent & Substitute Parts

Part Overview

The DR127-2R2 is a 2.2 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 12.5 A continuous current with a DC resistance of 4.02 mOhm and operates across the temperature range of -40°C to 125°C. The part is currently classified as obsolete, which necessitates identification of active equivalent components for ongoing production and maintenance applications.

Substiute Parts

DR127-2R2

Eaton - Electronics DivisionIn Stock: 1441DR127-2R2 Datasheet

Current PartRFQ

DR127-2R2-R

Eaton - Electronics DivisionIn Stock: 1937DR127-2R2-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DR127-2R2 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Inductance value: 2.2 µH with ±20% tolerance
• Current rating: 12.5 A minimum
• Saturation current: 25.5 A
• DC resistance: 4.02 mOhm

Physical & Mechanical Parameters:

• Core type: Ferrite drum core, shielded
• Mounting: Surface mount configuration
• Package dimensions: 12.50 mm x 12.50 mm x 8.00 mm maximum height
• Inductance measurement frequency: 100 kHz

Environmental & Compliance Parameters:

• Operating temperature: -40°C to 125°C
• Moisture sensitivity level: 1 (Unlimited)

The substitute part DR127-2R2-R maintains identical electrical and mechanical specifications while differing only in product status (active vs. obsolete) and packaging format (Tape & Reel vs. standard packaging).

Parameter Comparison

Engineering Selection Recommendations

The DR127-2R2-R is the direct active equivalent of the obsolete DR127-2R2. Selection of the substitute part is based on the following factors:

Product Status: The DR127-2R2 is classified as obsolete, making the active DR127-2R2-R the appropriate choice for new designs and ongoing production requirements.

Electrical Equivalence: All electrical parameters are identical, including inductance value, current rating, saturation current, and DC resistance. The component will function identically in circuit applications designed for the original part.

Mechanical Compatibility: Physical dimensions and mounting characteristics are identical, ensuring direct board-level compatibility without layout modifications.

Compliance Posture: The DR127-2R2-R meets ROHS3 compliance requirements, whereas the original part is non-compliant. For applications subject to RoHS regulations, the substitute part satisfies current environmental standards. The REACH Unaffected status of the substitute part indicates compliance with chemical substance regulations.

Packaging Consideration: The substitute part is supplied in Tape & Reel (TR) format, which is standard for high-volume production environments. If alternative packaging is required, this should be confirmed with the manufacturer.

Frequently Asked Questions (FAQ)

Q: Can DR127-2R2-R be used as a direct replacement for DR127-2R2 in existing designs?

A: Yes. The DR127-2R2-R is electrically and mechanically identical to the DR127-2R2. All critical parameters including inductance, current rating, DC resistance, core material, shielding, dimensions, and operating temperature range are equivalent. The substitute part will function identically in circuit applications.

Q: What is the primary reason for substitution?

A: The DR127-2R2 is classified as obsolete. The DR127-2R2-R is the active equivalent from the same manufacturer and series, ensuring continued availability for production and maintenance applications.

Q: Are there differences in RoHS compliance between the two parts?

A: Yes. The DR127-2R2 is RoHS non-compliant, while the DR127-2R2-R is ROHS3 compliant. For applications subject to RoHS regulations, the substitute part is required.

Q: Does the Tape & Reel packaging of DR127-2R2-R affect circuit performance?

A: No. Packaging format does not affect electrical or mechanical performance. Tape & Reel is a standard supply format for automated assembly processes and does not alter component specifications or functionality.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 12.50 mm length x 12.50 mm width x 8.00 mm maximum height. No PCB layout modifications are required when substituting the DR127-2R2-R for the DR127-2R2.

Q: What is the inductance tolerance for both parts?

A: Both the DR127-2R2 and DR127-2R2-R have an inductance tolerance of ±20% at the 100 kHz test frequency.

Q: Is the saturation current specification the same?

A: Yes. Both parts have a saturation current (Isat) of 25.5 A, providing identical current handling capability before inductance degradation occurs.