Würth Elektronik 744902047 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744902047 is a 4.7 nH unshielded thin film inductor rated for 300 mA with a maximum DC resistance of 200mOhm in a 0603 (1608 Metric) surface mount package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. Substitute parts must maintain the core electrical specifications while accommodating package and performance variations.

Substiute Parts

744902047

Würth ElektronikIn Stock: 1020744902047 Datasheet

Current PartRFQ

744901047

Würth ElektronikIn Stock: 19175744901047 Datasheet

DirectRFQ

L06034R7CGSTR

KYOCERA AVXIn Stock: 3457L06034R7CGSTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 744902047 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 4.7 nH (exact match required)
• Inductance tolerance: ±0.1nH or tighter
• Shielding type: Unshielded
• Component type: Thin film inductor
• Mounting type: Surface mount

Secondary Compatibility Criteria:

• Current rating: Equal to or greater than 300 mA
• DC resistance: Equal to or less than 200mOhm
• Operating temperature range: Must encompass -40°C to 125°C minimum
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1 or equivalent

Package Considerations:

• Primary package match: 0603 (1608 Metric)
• Alternative packages acceptable if electrical parameters are maintained and board layout permits

Parameter Comparison

Engineering Selection Recommendations

744901047 (Würth Elektronik): This part maintains the same manufacturer lineage and series (WE-TCI) as the main component. It meets the inductance and tolerance requirements with improved current rating (320 mA vs. 300 mA). However, the DC resistance is elevated at 600mOhm maximum compared to the 200mOhm specification of the main part. The package is smaller (0402 vs. 0603), which may present board layout constraints. This part is active and ROHS3 compliant.

L06034R7CGSTR (KYOCERA AVX Accu-L® Series): This part matches the package footprint (0603) of the main component and provides superior electrical performance with 500 mA current rating and 150mOhm maximum DC resistance. The inductance tolerance is ±0.2nH, which is wider than the ±0.1nH specification. The operating temperature range extends to -55°C, exceeding the minimum requirement. This part is active and ROHS3 compliant.

Both substitute parts are active products with current manufacturing status and full compliance certifications, making them suitable for long-term procurement and design continuity.

Frequently Asked Questions (FAQ)

Q: Can 744901047 be used as a direct replacement for 744902047?

A: 744901047 matches the inductance value and tolerance but differs in package size (0402 vs. 0603) and DC resistance (600mOhm vs. 200mOhm). Package compatibility depends on board layout. The higher DC resistance may affect circuit performance in applications sensitive to resistive losses.

Q: What are the key differences between the two substitute parts?

A: 744901047 is a smaller package (0402) with higher DC resistance (600mOhm). L06034R7CGSTR maintains the 0603 package with lower DC resistance (150mOhm) and higher current rating (500 mA). Both meet the 4.7 nH inductance requirement.

Q: Is the inductance tolerance difference between ±0.1nH and ±0.2nH significant?

A: The tolerance difference represents the manufacturing precision band. For 4.7 nH inductors, ±0.1nH is approximately 2.1% tolerance, while ±0.2nH is approximately 4.3% tolerance. Selection depends on circuit sensitivity to inductance variation.

Q: Can I use L06034R7CGSTR if my design requires 200mOhm maximum DC resistance?

A: L06034R7CGSTR provides 150mOhm maximum DC resistance, which is superior to the 200mOhm requirement and is therefore acceptable for this specification.

Q: Are there package footprint compatibility concerns?

A: 744901047 uses 0402 (1005 Metric) package, which is smaller than the original 0603 (1608 Metric). Board layout and component density must be evaluated. L06034R7CGSTR maintains the 0603 footprint, eliminating package-related redesign requirements.

Q: What is the compliance status of these substitute parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Both substitute parts are active products with unlimited moisture sensitivity level (MSL 1).