DR127-1R0 Equivalent & Substitute Parts

Part Overview

The DR127-1R0 is a 1 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 15.5 A continuous current with a saturation current of 40 A and features a DC resistance of 3.13 mOhm. The part operates across the temperature range of -40°C to 125°C and is designed for applications requiring low inductance values with high current handling capability.

The DR127-1R0 carries an obsolete product status. Locating equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or repair requirements for systems utilizing this inductor specification.

Substiute Parts

DR127-1R0

Eaton - Electronics DivisionIn Stock: 745DR127-1R0 Datasheet

Current PartRFQ

DR127-1R0-R

Eaton - Electronics DivisionIn Stock: 1921DR127-1R0-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DR127-1R0 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Inductance value: 1 µH
• Inductance tolerance: ±20%
• Current rating: 15.5 A minimum
• Saturation current: 40 A minimum
• DC resistance: 3.13 mOhm maximum

Mechanical & Physical Parameters (Must Match Exactly):

• Core type: Drum core, wirewound
• Core material: Ferrite
• Shielding: Shielded configuration
• Mounting: Surface mount
• Package dimensions: 12.50 mm × 12.50 mm × 8.00 mm maximum

Environmental & Compliance Parameters (Must Match or Exceed):

• Operating temperature range: -40°C to 125°C minimum
• Moisture sensitivity level: MSL 1 or better

Substitute parts must maintain identical electrical performance and physical form factor to ensure direct replacement without circuit redesign or PCB modification.

Parameter Comparison

Engineering Selection Recommendations

DR127-1R0-R is the direct equivalent substitute for the obsolete DR127-1R0. Both parts are manufactured by Eaton - Electronics Division and share identical electrical and mechanical specifications across all critical parameters.

Key Differentiation Factors:

The DR127-1R0-R maintains active product status, ensuring continued manufacturer support and long-term availability. This substitute part carries ROHS3 compliance certification, whereas the original DR127-1R0 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the DR127-1R0-R is the appropriate selection.

Packaging differs between the two parts: the DR127-1R0-R is supplied in Tape & Reel (TR) format, which is standard for automated assembly operations, while the original part is supplied in bulk packaging. The DR127-1R0-R also demonstrates higher inventory availability at 1845 pieces compared to 717 pieces for the original part.

All electrical performance parameters, physical dimensions, temperature ratings, and functional characteristics are identical between the two parts, confirming direct substitution capability without circuit modification or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can DR127-1R0-R be used as a direct replacement for DR127-1R0 in existing designs?

A: Yes. The DR127-1R0-R is electrically and mechanically identical to the DR127-1R0. All critical parameters including inductance, current rating, DC resistance, core material, shielding, dimensions, and temperature range are equivalent. Direct substitution is possible without circuit redesign or PCB modification.

Q: What is the difference between the two part numbers?

A: The primary differences are product status, RoHS compliance, and packaging format. The DR127-1R0-R is an active product with ROHS3 compliance and Tape & Reel packaging, while the DR127-1R0 is obsolete, RoHS non-compliant, and supplied in bulk. Electrical and mechanical specifications are identical.

Q: Does the Tape & Reel packaging of DR127-1R0-R affect compatibility?

A: No. Tape & Reel packaging is a supply format used for automated assembly operations. The component itself is identical to the bulk-packaged version. Once removed from the tape, the inductor functions identically in the circuit.

Q: Are there any temperature or frequency limitations when substituting DR127-1R0-R for DR127-1R0?

A: No. Both parts operate across the identical temperature range of -40°C to 125°C and are tested at 100 kHz. Performance characteristics remain unchanged across the specified operating envelope.

Q: Is RoHS3 compliance a functional requirement for substitution?

A: RoHS3 compliance is a regulatory and environmental requirement, not a functional electrical requirement. If your application or market requires RoHS compliance, DR127-1R0-R is the appropriate selection. If RoHS compliance is not required, both parts are functionally equivalent.

Q: What is the saturation current specification, and does it affect substitution?

A: Both parts have a saturation current (Isat) of 40 A. This specification indicates the current level at which the inductor begins to saturate and inductance value degrades. The identical saturation rating confirms equivalent performance under high-current transient conditions.

Q: Can I use DR127-1R0-R in applications originally designed for DR127-1R0?

A: Yes. The DR127-1R0-R is a direct functional equivalent. All electrical parameters, mechanical dimensions, and environmental ratings are identical. The part is suitable for all applications where the original DR127-1R0 was specified.