Equivalent & Substitute Parts for DR125-560-R

Part Overview

The DR125-560-R is a 56 µH shielded drum core wirewound inductor manufactured by Eaton Electronics Division. This surface mount component is rated for 2.31 A continuous current with a DC resistance of 102mOhm and operates across the temperature range of -40°C to 125°C. The part maintains Active product status and is ROHS3 compliant with unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances for inductance, current rating, DC resistance, and operating temperature range. Alternative sources provide design flexibility, supply chain redundancy, and inventory availability.

Substiute Parts

DR125-560-R

Eaton - Electronics DivisionIn Stock: 1576DR125-560-R Datasheet

Current PartRFQ

P1170.563NLT

Pulse ElectronicsIn Stock: 2038P1170.563NLT Datasheet

DirectRFQ

SRR1260-560M

Bourns Inc.In Stock: 2447SRR1260-560M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DR125-560-R are qualified based on the following critical parameters:

Electrical Equivalence Criteria:

• Inductance value of 56 µH within ±20% tolerance
• Current rating minimum of 2.31 A
• DC resistance not exceeding 102mOhm nominal specification
• Saturation current (Isat) sufficient to support rated current without core saturation
• Operating temperature range encompassing -40°C to 125°C minimum

Mechanical & Compliance Criteria:

• Surface mount nonstandard package configuration
• Shielded construction for electromagnetic containment
• Tape & Reel packaging format
• ROHS3 compliance certification
• Moisture sensitivity level 1 (unlimited)

Identified Substitute Parts:

1. SRR1260-560M (Bourns Inc.) — Drum core wirewound inductor with 2.3 A rating, 100mOhm DCR, ferrite core, identical footprint dimensions
2. P1170.563NLT (Pulse Electronics) — Wirewound inductor with 2 A rating, 110mOhm DCR, shielded construction, slightly reduced footprint

Parameter Comparison

Engineering Selection Recommendations

SRR1260-560M (Bourns Inc.) — Primary Substitute

The SRR1260-560M qualifies as the primary substitute based on electrical and mechanical equivalence. Current rating of 2.3 A matches the DR125-560-R specification within 0.04% variance. DC resistance of 100mOhm maximum is superior to the 102mOhm specification. Identical footprint dimensions (12.50 x 12.50 mm) and ferrite drum core construction ensure direct mechanical compatibility. Operating temperature range (-40 to 125°C) is identical. ROHS3 compliance and unlimited MSL rating match the original part. Saturation current of 2.2 A is lower than the original 3 A specification and requires circuit-level evaluation for applications operating near saturation conditions.

P1170.563NLT (Pulse Electronics) — Secondary Substitute

The P1170.563NLT qualifies as a secondary substitute with design considerations. Inductance and tolerance specifications are identical. Current rating of 2 A is 13% below the DR125-560-R specification and limits application to circuits with maximum sustained current below 2 A. DC resistance of 110mOhm maximum exceeds the original specification by 8mOhm. Footprint dimensions are slightly reduced (12.24 x 12.24 mm), which may provide layout advantages in space-constrained designs. Operating temperature range extends to 130°C, providing additional thermal margin. ROHS3 compliance and unlimited MSL rating are maintained. Self-resonant frequency of 8MHz is specified, providing additional frequency response data.

Both substitute parts maintain Active product status and full regulatory compliance. Selection between primary and secondary substitutes depends on circuit current requirements and thermal design constraints.

Frequently Asked Questions (FAQ)

Q: Can the P1170.563NLT be used in applications requiring 2.31 A continuous current?

A: No. The P1170.563NLT is rated for 2 A maximum continuous current, which is 0.31 A below the DR125-560-R specification. Applications requiring 2.31 A must use the SRR1260-560M or the original DR125-560-R.

Q: What is the impact of the 2mOhm difference in DC resistance between the DR125-560-R and SRR1260-560M?

A: The SRR1260-560M DCR of 100mOhm is 2mOhm lower than the DR125-560-R specification of 102mOhm. This represents a 1.96% improvement in resistance characteristics, resulting in lower power dissipation and reduced thermal generation in the inductor.

Q: Are the footprints of all three parts identical?

A: No. The DR125-560-R and SRR1260-560M share identical footprints of 12.50 x 12.50 mm. The P1170.563NLT has a slightly smaller footprint of 12.24 x 12.24 mm. Height specifications differ: DR125-560-R and P1170.563NLT are 6.00 mm maximum, while SRR1260-560M is 6.50 mm maximum.

Q: What is the saturation current consideration when selecting between the DR125-560-R and SRR1260-560M?

A: The DR125-560-R has a saturation current (Isat) of 3 A, while the SRR1260-560M is rated at 2.2 A. In applications where transient or peak currents approach or exceed 2.2 A, the SRR1260-560M may experience core saturation earlier than the original part. Circuit analysis is required for applications with current spikes or transient conditions.

Q: Are all three parts ROHS3 compliant?

A: Yes. The DR125-560-R, SRR1260-560M, and P1170.563NLT are all ROHS3 compliant with unlimited moisture sensitivity level (MSL 1) ratings.

Q: What is the operating temperature advantage of the P1170.563NLT?

A: The P1170.563NLT operates across -40°C to 130°C, extending 5°C above the -40°C to 125°C range of the DR125-560-R and SRR1260-560M. This provides additional thermal margin for high-temperature applications.

Q: Can the inductance value of 56 µH vary between parts?

A: All three parts specify 56 µH inductance with ±20% tolerance. This means actual inductance values can range from 44.8 µH to 67.2 µH across all parts. Circuit designs must accommodate this tolerance band.