Equivalent & Substitute Parts for DR124-471-R

Part Overview

The DR124-471-R is a 470 µH shielded drum core wirewound inductor manufactured by Eaton Electronics Division. This surface mount component is rated for 680 mA continuous current with a maximum DC resistance of 1.491 Ohm 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 (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical parameters align within the allowed specifications for this inductor category, enabling direct functional replacement in circuit applications.

Substiute Parts

DR124-471-R

Eaton - Electronics DivisionIn Stock: 1123DR124-471-R Datasheet

Current PartRFQ

P1168.474NLT

Pulse ElectronicsIn Stock: 2205P1168.474NLT Datasheet

DirectRFQ

SRR1240-471K

Bourns Inc.In Stock: 1279SRR1240-471K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DR124-471-R are qualified based on the following electrical and mechanical criteria:

Primary Matching Parameters:

• Inductance value: 470 µH (fixed specification)
• Inductance tolerance: ±20% or tighter
• Shielding: Shielded configuration required
• Mounting type: Surface Mount
• Package dimensions: Nonstandard form factor with 12.50 x 12.50 mm footprint and 4.50 mm maximum height
• RoHS compliance: ROHS3 Compliant

Current Handling Compatibility: Substitute parts must maintain current ratings and saturation current specifications within acceptable operating margins for the intended application. The DR124-471-R baseline current rating of 680 mA and saturation current of 740 mA establish the performance envelope.

Thermal and Environmental: Operating temperature range of -40°C to 125°C and MSL 1 rating are standard requirements for this component class.

Parameter Comparison

Engineering Selection Recommendations

P1168.474NLT (Pulse Electronics): This substitute maintains the 470 µH inductance specification with ±20% tolerance matching. DC resistance of 1.403 Ohm is lower than the main part, reducing resistive losses. Current rating of 570 mA is 110 mA below the DR124-471-R baseline. This part is suitable for applications where the 570 mA current rating is sufficient and lower DC resistance is beneficial. Extended operating temperature to 130°C provides additional thermal margin. Package dimensions of 12.24 x 12.24 mm are slightly smaller in footprint while maintaining identical 4.50 mm height. ROHS3 compliance and REACH Unaffected status confirm regulatory alignment.

SRR1240-471K (Bourns Inc.): This substitute provides 470 µH inductance with tighter ±10% tolerance, improving inductance accuracy. DC resistance of 1.35 Ohm is the lowest among all three parts. Current rating of 620 mA is 60 mA below the main part specification. Saturation current of 600 mA is also lower. This part is appropriate for applications where improved inductance tolerance and reduced DC resistance are required, provided the 620 mA current rating is acceptable. Package dimensions match the main part exactly at 12.50 x 12.50 x 4.50 mm. ROHS3 compliance and REACH Unaffected status confirm regulatory alignment.

Selection between substitutes depends on application current requirements and tolerance specifications. Both substitutes are Active products with full regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can P1168.474NLT replace DR124-471-R in all applications?

A: P1168.474NLT is functionally equivalent for applications where the circuit current requirement does not exceed 570 mA. The lower DC resistance of 1.403 Ohm compared to 1.491 Ohm reduces power dissipation. Footprint dimensions of 12.24 x 12.24 mm are slightly smaller but compatible with standard 12.50 x 12.50 mm land patterns. Verify circuit current specifications before substitution.

Q: What is the difference in current handling between the three parts?

A: DR124-471-R is rated for 680 mA continuous current with 740 mA saturation. P1168.474NLT is rated for 570 mA continuous with 570 mA saturation. SRR1240-471K is rated for 620 mA continuous with 600 mA saturation. Applications requiring the full 680 mA rating cannot use P1168.474NLT or SRR1240-471K without circuit redesign.

Q: How do inductance tolerances affect circuit performance?

A: DR124-471-R and P1168.474NLT both specify ±20% inductance tolerance. SRR1240-471K specifies ±10% tolerance, providing tighter inductance accuracy. Applications with strict inductance requirements benefit from the SRR1240-471K specification. Standard ±20% tolerance is acceptable for general filtering and energy storage applications.

Q: Are package dimensions interchangeable?

A: DR124-471-R and SRR1240-471K share identical dimensions of 12.50 x 12.50 x 4.50 mm. P1168.474NLT measures 12.24 x 12.24 x 4.50 mm, with a slightly smaller footprint. All three parts maintain the same 4.50 mm seated height. Verify PCB land pattern compatibility before substitution.

Q: What is the significance of DC resistance differences?

A: Lower DC resistance reduces I²R power losses in the inductor. SRR1240-471K at 1.35 Ohm dissipates less heat than DR124-471-R at 1.491 Ohm. P1168.474NLT at 1.403 Ohm provides intermediate performance. Applications with high current or thermal constraints benefit from lower DC resistance specifications.

Q: Are all three parts ROHS3 compliant?

A: Yes. DR124-471-R, P1168.474NLT, and SRR1240-471K are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. P1168.474NLT and SRR1240-471K carry additional REACH Unaffected status confirmation.

Q: What is the operating temperature range for each part?

A: DR124-471-R and SRR1240-471K operate from -40°C to 125°C. P1168.474NLT extends to -40°C to 130°C, providing 5°C additional high-temperature margin. All three parts meet standard industrial temperature specifications.