Würth Elektronik 744062180 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744062180 is a 18 µH shielded drum core wirewound inductor rated for 1.28 A continuous current with a maximum DC resistance of 100mOhm. This surface mount component operates across the industrial temperature range of -40°C to 125°C and is designed for applications requiring stable inductance at 100 kHz test frequency. The part maintains 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

744062180

Würth ElektronikIn Stock: 3120744062180 Datasheet

Current PartRFQ

SRR6028-180Y

Bourns Inc.In Stock: 10243SRR6028-180Y Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns Inc. SRR6028-180Y qualifies as a direct substitute based on the following critical parameters:

Matching Parameters:

• Inductance value: 18 µH (identical)
• Inductance tolerance: ±30% (identical)
• Core type: Ferrite shielded drum core wirewound (identical)
• Operating temperature range: -40°C to 125°C (identical)
• Mounting type: Surface Mount (identical)
• Physical footprint: 6.80mm L x 6.80mm W (identical)
• RoHS3 compliance: Yes (identical)
• Moisture sensitivity level: 1 (Unlimited) (identical)

Enhanced Performance Parameters:

• Current rating: 1.5 A (exceeds 1.28 A requirement)
• Saturation current: 1.1 A (exceeds 1 A requirement)
• DC resistance: 85mOhm Max (lower than 100mOhm maximum)

The SRR6028-180Y maintains electrical equivalence while providing superior current handling and reduced resistive losses, making it suitable for direct replacement in applications designed for the 744062180.

Parameter Comparison

Engineering Selection Recommendations

Both the Würth Elektronik 744062180 and Bourns SRR6028-180Y maintain active product status with full RoHS3 compliance and REACH unaffected designation. Selection between these components should be based on availability and supply chain requirements rather than electrical performance differences.

The SRR6028-180Y provides measurable advantages in current handling capacity (1.5 A vs. 1.28 A) and lower DC resistance (85mOhm vs. 100mOhm maximum), resulting in reduced power dissipation. The primary design consideration is the height difference: the SRR6028-180Y seated height reaches 3.00mm compared to 2.50mm for the 744062180. PCB layout clearance must accommodate this 0.50mm increase in vertical profile.

Both components are certified for industrial temperature operation and unlimited moisture exposure, supporting deployment in standard manufacturing environments without additional handling precautions.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SRR6028-180Y directly replace the Würth Elektronik 744062180 in existing designs?

A: Yes, the SRR6028-180Y is electrically equivalent with identical inductance value, tolerance, core material, and operating temperature range. The primary design consideration is the 0.50mm increase in maximum seated height (3.00mm vs. 2.50mm). PCB layout must provide sufficient vertical clearance above the component to prevent mechanical interference with adjacent components or enclosure elements.

Q: What are the key parameters that define substitution eligibility for this inductor?

A: Substitution is determined by matching inductance value (18 µH), inductance tolerance (±30%), core material (ferrite shielded drum core), operating temperature range (-40°C to 125°C), and surface mount package footprint (6.80mm x 6.80mm). Current rating and DC resistance may exceed the original specification without affecting compatibility.

Q: Does the lower DC resistance of the SRR6028-180Y affect circuit performance?

A: Lower DC resistance (85mOhm vs. 100mOhm maximum) reduces resistive losses and heat generation during operation. This represents an improvement over the original specification and does not introduce compatibility issues in circuits designed for the 744062180.

Q: Are there packaging differences between these components?

A: The Würth Elektronik 744062180 is supplied in Tape & Reel (TR) packaging, while the Bourns SRR6028-180Y is available in Cut Tape (CT) and Digi-Reel® packaging. Both formats are standard for surface mount component distribution and do not affect component performance or compatibility.

Q: What is the impact of the 4 MHz difference in self-resonant frequency?

A: The self-resonant frequency difference (25 MHz vs. 21 MHz) reflects manufacturing variations between suppliers but does not affect substitution eligibility. Both frequencies remain well above typical circuit operating frequencies for 18 µH inductors, maintaining stable performance across the specified inductance frequency test point of 100 kHz.