Würth Elektronik 744902033 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744902033 is a 3.3 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 available alternatives in the current market.

Substiute Parts

744902033

Würth ElektronikIn Stock: 762744902033 Datasheet

Current PartRFQ

744901033

Würth ElektronikIn Stock: 6208744901033 Datasheet

DirectRFQ

L06033R3CGSTR

KYOCERA AVXIn Stock: 2157L06033R3CGSTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 744902033 is determined by the following critical parameters:

Primary Criteria (Must Match):

• Inductance value: 3.3 nH
• Component type: Thin film inductor
• Shielding configuration: Unshielded
• RoHS compliance: ROHS3 Compliant

Secondary Criteria (Allowable Variation):

• Current rating: Equal to or greater than 300 mA
• DC resistance: Equal to or less than 200mOhm
• Package compatibility: 0603 (1608 Metric) or smaller footprint with equivalent or superior electrical performance
• Operating temperature range: Must encompass -40°C ~ 125°C minimum

The substitute parts identified meet these criteria with variations in current handling capability, DC resistance characteristics, and package dimensions that maintain functional equivalence for the specified inductance value.

Parameter Comparison

Engineering Selection Recommendations

744901033 (Würth Elektronik): This direct manufacturer alternative maintains the same inductance value and tolerance with improved current handling (380 mA vs. 300 mA). The component is active status with full ROHS3 compliance. The 0402 (1005 Metric) package is smaller than the original, requiring PCB layout verification for footprint compatibility. DC resistance is higher at 400mOhm maximum, which may impact circuit performance in low-impedance applications.

L06033R3CGSTR (KYOCERA AVX Accu-L® Series): This manufacturer-recommended substitute provides superior electrical performance with 750 mA current rating and 80mOhm maximum DC resistance, representing a significant improvement over the original specification. The 0603 (1608 Metric) package matches the original footprint exactly. Extended operating temperature range (-55°C ~ 125°C) provides additional thermal margin. Active product status ensures long-term availability. ROHS3 compliance is confirmed. Inductance tolerance is ±0.2nH, which is acceptable for most RF and high-frequency applications.

Both substitutes are ROHS3 compliant and maintain unshielded thin film construction. Selection between alternatives depends on specific circuit requirements regarding current capacity, DC resistance characteristics, and PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can the 744901033 be used as a direct replacement for the 744902033?

A: The 744901033 maintains identical inductance (3.3 nH) and tolerance (±0.1nH) specifications. However, the package size differs (0402 vs. 0603), requiring PCB layout modification. The higher DC resistance (400mOhm vs. 200mOhm) may affect circuit performance in applications sensitive to inductor losses. Electrical compatibility is confirmed; physical compatibility requires verification.

Q: What are the advantages of the L06033R3CGSTR substitute?

A: The L06033R3CGSTR offers superior DC resistance (80mOhm vs. 200mOhm), higher current rating (750 mA vs. 300 mA), and identical package dimensions (0603). These characteristics reduce power dissipation and provide greater design margin. The extended temperature range (-55°C to 125°C) supports broader operating environments.

Q: Are all substitutes RoHS compliant?

A: Yes. Both the 744901033 and L06033R3CGSTR are ROHS3 compliant, matching the original component's environmental certification status.

Q: Does inductance tolerance affect substitution?

A: The 744902033 and 744901033 share ±0.1nH tolerance. The L06033R3CGSTR has ±0.2nH tolerance, which is acceptable for most applications but should be verified for circuits requiring tighter inductance control.

Q: What is the impact of different DC resistance values?

A: Lower DC resistance reduces power dissipation and heat generation. The L06033R3CGSTR (80mOhm) dissipates significantly less power than the original (200mOhm) at equivalent current levels. The 744901033 (400mOhm) increases dissipation and may require thermal management review in power-sensitive designs.

Q: Can the 0402 package substitute be used in a 0603 footprint?

A: The 744901033 in 0402 package is physically smaller and cannot be directly mounted in a 0603 footprint without PCB redesign. Adapter solutions or layout modification is required for implementation.