DR124-151-R Equivalent & Substitute Parts

Part Overview

The DR124-151-R is a 150 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 1.3 A continuous current with a maximum DC resistance of 445.2 mOhm and operates across the temperature range of -40°C to 125°C. The part is ROHS3 compliant and carries an active product status. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring 150 µH inductance in nonstandard surface mount packages.

Substiute Parts

DR124-151-R

Eaton - Electronics DivisionIn Stock: 1047DR124-151-R Datasheet

Current PartRFQ

SRR1240-151K

Bourns Inc.In Stock: 2145SRR1240-151K Datasheet

DirectRFQ

PA4303.154NLT

Pulse ElectronicsIn Stock: 5994PA4303.154NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DR124-151-R is determined by the following critical parameters: inductance value of 150 µH, ferrite drum core construction with shielding, surface mount configuration, and nonstandard package dimensions of 0.492" L x 0.492" W (12.50mm x 12.50mm). Current rating, DC resistance, and operating temperature range establish the performance envelope for direct substitution.

The identified substitute parts meet the core inductance and physical package requirements. Variations in current rating, DC resistance tolerance, and saturation current reflect manufacturer-specific design approaches while maintaining functional compatibility within the specified inductance and thermal operating parameters.

Parameter Comparison

Engineering Selection Recommendations

All three inductors—DR124-151-R, SRR1240-151K, and PA4303.154NLT—are active products with ROHS3 compliance and MSL Level 1 ratings, confirming suitability for modern manufacturing and long-term storage without moisture sensitivity constraints.

The SRR1240-151K (Bourns) offers the tightest inductance tolerance at ±10% compared to ±20% for the primary and alternative parts, with comparable DC resistance and identical physical dimensions. This part is suitable for applications where inductance precision is critical.

The PA4303.154NLT (Pulse Electronics) provides the lowest current rating at 950 mA and exhibits a maximum seated height of 0.197" (5.00mm) versus 0.177" (4.50mm) for the other two parts. This height differential must be evaluated against PCB layout constraints and clearance requirements.

Selection between these parts depends on application-specific current requirements, inductance tolerance specifications, and physical height constraints within the target assembly.

Frequently Asked Questions (FAQ)

Q: Can the SRR1240-151K replace the DR124-151-R in all applications?

A: The SRR1240-151K shares identical inductance, core material, shielding, and physical footprint dimensions. However, the current rating is 1.1 A versus 1.3 A for the DR124-151-R. Substitution is valid only for applications where the circuit current does not exceed 1.1 A. The SRR1240-151K provides superior inductance tolerance at ±10%.

Q: What are the limitations of the PA4303.154NLT as a substitute?

A: The PA4303.154NLT has a reduced current rating of 950 mA and a maximum seated height of 0.197" (5.00mm), which is 0.020" taller than the DR124-151-R. Applications limited to currents below 950 mA and with adequate vertical clearance can use this part. The inductance tolerance remains ±20%.

Q: Are all three parts compatible with the same PCB footprint?

A: The DR124-151-R and SRR1240-151K have identical footprint dimensions of 0.492" L x 0.492" W with a maximum seated height of 0.177" (4.50mm). The PA4303.154NLT has the same footprint but a maximum seated height of 0.197" (5.00mm). Verify clearance above the component before selecting the PA4303.154NLT.

Q: What is the significance of the inductance tolerance differences?

A: The DR124-151-R and PA4303.154NLT carry ±20% tolerance, while the SRR1240-151K carries ±10% tolerance. For circuits sensitive to inductance variation, the SRR1240-151K provides tighter control. For general-purpose filtering and energy storage applications, ±20% tolerance is typically acceptable.

Q: Are all parts suitable for the full -40°C to 125°C temperature range?

A: Yes. All three inductors are rated for continuous operation across -40°C to 125°C, ensuring compatibility in industrial and automotive environments.

Q: Do all parts meet current environmental compliance standards?

A: Yes. All three parts are ROHS3 compliant and carry MSL Level 1 ratings, confirming compliance with current environmental regulations and unlimited shelf life without moisture sensitivity concerns.