744775115 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744775115 is a 15 µH unshielded drum core wirewound inductor rated for 1.93 A continuous current with a maximum DC resistance of 90 mOhm. This surface mount component operates across the industrial temperature range of -40°C to 125°C and is part of the WE-PD2 series. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating. Equivalent parts are identified when they maintain the same inductance value, current rating compatibility, and core material specifications while meeting the same environmental and compliance standards.

Substiute Parts

744775115

Würth ElektronikIn Stock: 2299744775115 Datasheet

Current PartRFQ

SDR0805-150ML

Bourns Inc.In Stock: 5075SDR0805-150ML Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 744775115 is determined by strict alignment of electrical and mechanical parameters. The primary criteria are: inductance value of 15 µH, current rating of 1.8 A or higher, maximum DC resistance of 90 mOhm, ferrite core material, unshielded construction, surface mount packaging, and ROHS3 compliance. The substitute part SDR0805-150ML from Bourns Inc. meets these core requirements with equivalent inductance, compatible current rating (1.8 A), matching DC resistance specification, identical core material, and matching compliance certifications. Tolerance differences and frequency characteristics do not disqualify substitution when the primary electrical parameters align within acceptable operating margins.

Parameter Comparison

Engineering Selection Recommendations

The SDR0805-150ML qualifies as a direct substitute for the 744775115 based on matching inductance specification, compatible current ratings, and identical DC resistance maximum. Both components maintain ROHS3 compliance and operate across the same temperature range. The Bourns part carries a higher saturation current rating (2.7 A versus 2.23 A), providing additional margin in high-current transient conditions. The 0.8mm width difference and 0.2mm height reduction in the Bourns part require verification of PCB layout constraints and clearance requirements in the target application. Both parts are active production items with established supply chains.

Frequently Asked Questions (FAQ)

Q: Can SDR0805-150ML replace 744775115 in all applications? A: Substitution is valid when the application current requirement does not exceed 1.8 A continuous and the PCB layout accommodates the 7.80mm x 7.80mm footprint of the Bourns part. The 0.2mm height difference is negligible for most surface mount assembly processes.

Q: What is the impact of the ±20% tolerance on SDR0805-150ML versus ±10% on 744775115? A: The wider tolerance on the Bourns part means the actual inductance may deviate up to ±20% from the 15 µH nominal value. Applications requiring tighter inductance control should specify the Würth part or implement circuit-level compensation.

Q: Are there packaging differences between these parts? A: The 744775115 is supplied in Cut Tape (CT) and Digi-Reel packaging, while SDR0805-150ML is supplied in Tape & Reel (TR) format. Both are surface mount compatible; packaging selection depends on assembly volume and handling requirements.

Q: Do both parts meet the same compliance standards? A: Yes. Both the 744775115 and SDR0805-150ML are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS coding (8504.50.4000).

Q: What is the difference in self-resonant frequency? A: The 744775115 has a self-resonant frequency of 20 MHz, while the SDR0805-150ML is rated at 16 MHz. This difference may affect performance in high-frequency filtering applications above 10 MHz.