Würth Elektronik 744043005 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744043005 is a 5.6 µH shielded drum core wirewound inductor rated for 1.38 A with a maximum DC resistance of 85mOhm. This surface mount component operates across the -40°C to 125°C temperature range and is packaged in the 1919 (4848 Metric) form factor. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package footprint and performance envelope.

Substiute Parts

744043005

Würth ElektronikIn Stock: 2400744043005 Datasheet

Current PartRFQ

SRR4028-5R6Y

Bourns Inc.In Stock: 1092SRR4028-5R6Y Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 744043005 is determined by strict equivalence across the following critical parameters:

• Inductance value: 5.6 µH with ±30% tolerance
• Current rating: 1.38 A minimum
• DC resistance: 85mOhm maximum
• Package footprint: 1919 (4848 Metric) surface mount
• Core material and shielding: Ferrite drum core, shielded configuration
• Operating temperature range: -40°C to 125°C
• Regulatory compliance: ROHS3 compliant

The Bourns Inc. SRR4028-5R6Y meets all substitution criteria within these parameters. Both parts share identical inductance, current rating, DC resistance specification, package dimensions, and temperature operating range. Compliance certifications and moisture sensitivity ratings are equivalent across both components.

Parameter Comparison

Engineering Selection Recommendations

Both the Würth Elektronik 744043005 and Bourns Inc. SRR4028-5R6Y are active production components with equivalent regulatory compliance. Selection between these parts is based on availability and supply chain requirements rather than electrical or mechanical differentiation. The Würth Elektronik part currently maintains 2300 units in stock, while the Bourns equivalent maintains 1019 units. Both components satisfy ROHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity handling. The identical package footprint, thermal operating range, and electrical specifications ensure direct substitution capability in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SRR4028-5R6Y directly replace the Würth Elektronik 744043005 on a PCB?

A: Yes. Both components share identical package dimensions (1919 / 4848 Metric), footprint, and height specifications. No PCB layout modifications are required.

Q: Are the electrical specifications identical between these parts?

A: The inductance value, current rating, and DC resistance specifications are identical. The saturation current differs slightly (1.3A vs 1.2A), and self-resonant frequency differs (60MHz vs 69MHz), but these variations remain within the functional equivalence parameters for this inductor category.

Q: What compliance certifications apply to both parts?

A: Both components are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity ratings. No additional handling or storage procedures are required when substituting between these parts.

Q: Are there any temperature or frequency limitations when substituting?

A: Both parts operate across the identical -40°C to 125°C temperature range. The inductance frequency test point is 100 kHz for both components, ensuring consistent performance in standard circuit applications.

Q: What is the tolerance specification for inductance?

A: Both the Würth Elektronik and Bourns parts carry ±30% inductance tolerance. Circuit designs must account for this tolerance range in both the primary and substitute component selections.