DR124-560-R Equivalent & Substitute Parts Reference

Part Overview

The DR124-560-R is a 56 µH shielded drum core wirewound inductor manufactured by Eaton Electronics Division, designed for surface mount applications requiring 2 A current rating. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductor category.

Substiute Parts

DR124-560-R

Eaton - Electronics DivisionIn Stock: 803DR124-560-R Datasheet

Current PartRFQ

P1168.563NLT

Pulse ElectronicsIn Stock: 1955P1168.563NLT Datasheet

DirectRFQ

SRR1240-560M

Bourns Inc.In Stock: 1812SRR1240-560M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DR124-560-R are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 56 µH (within ±20% tolerance specification)
• Inductance test frequency: 100 kHz
• Shielding requirement: Shielded configuration
• Mounting technology: Surface mount
• Packaging format: Tape & Reel (TR)
• Physical dimensions: Compatible with 12.50mm × 12.50mm footprint and 4.50mm maximum height
• RoHS3 compliance: Required
• Moisture sensitivity level: MSL 1 (Unlimited)

Secondary Compatibility Parameters:

• Operating temperature range: Minimum -40°C to 125°C overlap
• DC resistance: Within acceptable range for circuit performance
• Current rating: Minimum 1.7 A (acceptable for applications designed for 2 A nominal operation)

The substitute parts P1168.563NLT and SRR1240-560M meet these criteria with minor variations in current saturation ratings and DC resistance values that remain within acceptable engineering tolerances for this inductor category.

Parameter Comparison

Engineering Selection Recommendations

DR124-560-R (Eaton Electronics Division): Active product status with established supply chain. Highest current rating at 2 A with saturation current of 2.35 A. Drum core ferrite construction with 173.2 mOhm maximum DC resistance. Recommended for applications requiring maximum current capacity within the 56 µH specification. Full RoHS3 compliance and MSL 1 rating support standard manufacturing environments.

P1168.563NLT (Pulse Electronics): Active product status with higher inventory availability (1902 pcs). Wirewound construction with lowest DC resistance at 157 mOhm maximum. Operating temperature range extends to 130°C. Current rating of 1.7 A with saturation at 1.7 A. Suitable for applications where lower DC resistance and extended temperature operation are beneficial. Footprint is slightly smaller (12.24 × 12.24 mm) but maintains 4.50 mm height compatibility. Full RoHS3 compliance and MSL 1 rating.

SRR1240-560M (Bourns Inc.): Active product status with substantial inventory (1753 pcs). Drum core ferrite construction matching the main part topology. Current rating of 1.8 A with saturation at 1.65 A. DC resistance of 170 mOhm maximum, closely aligned with the main part specification. Identical footprint dimensions (12.50 × 12.50 mm) and height (4.50 mm). Provides Q factor specification of 16 @ 2.52 MHz and self-resonant frequency of 12 MHz. Full RoHS3 compliance and MSL 1 rating with REACH Unaffected status.

All three parts maintain RoHS3 compliance, MSL 1 unlimited rating, and EAR99 export classification. Selection should be based on specific application current requirements, thermal environment, and preferred core construction characteristics.

Frequently Asked Questions (FAQ)

Q: Can P1168.563NLT substitute for DR124-560-R in all applications?

A: P1168.563NLT is electrically compatible for applications requiring up to 1.7 A continuous current. The main part DR124-560-R is rated for 2 A. If the application circuit operates at or above 1.8 A, P1168.563NLT is not suitable. Both parts maintain 56 µH inductance at 100 kHz test frequency with ±20% tolerance. Wirewound construction of P1168.563NLT differs from the drum core design of DR124-560-R, resulting in lower DC resistance (157 mOhm vs 173.2 mOhm maximum).

Q: What are the physical compatibility considerations between these three parts?

A: All three parts are surface mount components in Tape & Reel packaging with identical 4.50 mm maximum seated height. DR124-560-R and SRR1240-560M share identical footprints at 12.50 × 12.50 mm. P1168.563NLT has a slightly smaller footprint at 12.24 × 12.24 mm. This dimensional difference may require PCB layout verification if the design has tight spacing constraints, though both footprints are compatible with standard 12.50 mm pad spacing.

Q: Are there temperature rating differences that affect substitution?

A: DR124-560-R and SRR1240-560M both operate from -40°C to 125°C. P1168.563NLT extends the upper operating temperature to 130°C. For applications operating above 125°C, only P1168.563NLT is suitable. For standard -40°C to 125°C environments, all three parts are equivalent in thermal capability.

Q: How do DC resistance values impact circuit performance?

A: DC resistance affects power dissipation and voltage drop across the inductor. P1168.563NLT has the lowest DCR at 157 mOhm maximum, resulting in approximately 9% lower resistive losses compared to DR124-560-R at 173.2 mOhm maximum. SRR1240-560M at 170 mOhm maximum is within 1.8% of the main part specification. For high-current or efficiency-sensitive applications, lower DCR values reduce thermal generation.

Q: What is the significance of current saturation ratings?

A: Saturation current (Isat) indicates the current level at which inductance begins to degrade significantly. DR124-560-R has Isat of 2.35 A, providing 17.5% margin above its 2 A rating. P1168.563NLT has Isat of 1.7 A, equal to its current rating with no margin. SRR1240-560M has Isat of 1.65 A, below its 1.8 A rating. For applications with transient current spikes, DR124-560-R provides superior saturation margin.

Q: Are all three parts RoHS3 compliant?

A: Yes. DR124-560-R, P1168.563NLT, and SRR1240-560M are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. All three carry EAR99 export classification and HTSUS code 8504.50.4000. SRR1240-560M and P1168.563NLT include REACH Unaffected status documentation.

Q: What core material differences exist between these inductors?

A: DR124-560-R and SRR1240-560M both use ferrite drum core construction. P1168.563NLT uses wirewound construction with core material not specified in available documentation. Ferrite drum core designs typically provide better shielding characteristics and more predictable inductance behavior across frequency ranges. Wirewound construction generally offers lower DC resistance and different frequency response characteristics.