Würth Elektronik 744028150 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744028150 is a 15 µH shielded drum core, wirewound inductor rated for 450 mA with a maximum DC resistance of 830 mOhm. This component is classified as obsolete, necessitating identification of active substitute parts for new designs and ongoing production requirements. The part is surface mount, nonstandard package, and operates across the industrial temperature range of -40°C to 125°C.

Substiute Parts

744028150

Würth ElektronikIn Stock: 1203744028150 Datasheet

Current PartRFQ

SRU2011-150Y

Bourns Inc.In Stock: 824SRU2011-150Y Datasheet

MFR RecommendedRFQ

SRU2013-150Y

Bourns Inc.In Stock: 773SRU2013-150Y Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Würth Elektronik 744028150 is determined by the following critical parameters:

• Inductance Value: 15 µH (exact match required)
• Current Rating: Minimum 450 mA to maintain design margin
• DC Resistance: Maximum 830 mOhm to preserve circuit performance
• Core Type: Ferrite drum core, wirewound, shielded construction
• Package Footprint: 2.80mm x 2.80mm surface mount
• Operating Temperature Range: -40°C ~ 125°C
• Tolerance: ±30%

Both Bourns SRU2011-150Y and SRU2013-150Y meet these substitution criteria with active product status and equivalent electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both Bourns substitute parts are active products with ROHS3 compliance and MSL Level 1 rating, matching the original component's environmental and regulatory certifications.

Bourns SRU2013-150Y provides the closest electrical match to the Würth 744028150, with current rating of 460 mA and DC resistance of 850 mOhm Max, both within 2% of the original specifications. This part is the primary substitute for direct replacement applications.

Bourns SRU2011-150Y offers an alternative with lower DC resistance (1.2 Ohm Max) and reduced current rating (380 mA). This part is suitable only for applications where the 380 mA current rating is sufficient and where the higher DC resistance does not compromise circuit performance.

Height difference of 0.30mm (1.50mm vs 1.20mm) for SRU2013-150Y requires verification of PCB clearance in space-constrained layouts.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SRU2011-150Y replace the Würth 744028150 in all applications?

A: No. The SRU2011-150Y has a maximum current rating of 380 mA, which is below the original 450 mA specification. Use only in applications where circuit current does not exceed 380 mA.

Q: What is the primary difference between the two Bourns substitutes?

A: The SRU2013-150Y has a higher current rating (460 mA) and lower DC resistance (850 mOhm Max) compared to the SRU2011-150Y (380 mA, 1.2 Ohm Max). The SRU2013-150Y is the closer electrical match to the original part.

Q: Are there PCB layout considerations when substituting with SRU2013-150Y?

A: Yes. The SRU2013-150Y has a maximum seated height of 1.50mm versus 1.20mm for the original part. Verify clearance above the component in your PCB assembly.

Q: Do both substitute parts meet the same compliance standards as the original?

A: Yes. Both Bourns parts are ROHS3 compliant, REACH unaffected, and have MSL Level 1 rating, matching the original Würth component's certifications.

Q: What is the inductance tolerance for these parts?

A: All three parts share ±30% inductance tolerance at 100 kHz test frequency.