744776147 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744776147 is a 47 µH unshielded drum core wirewound inductor rated for 1.45 A continuous current with 170mOhm maximum DC resistance. This surface mount component operates across -40°C to 125°C and is part of the WE-PD2 series. The part is currently active in production and ROHS3 compliant. Equivalent parts are identified when electrical characteristics and mechanical form factors align within acceptable tolerances for the application requirements.

Substiute Parts

744776147

Würth ElektronikIn Stock: 1066744776147 Datasheet

Current PartRFQ

SDR1006-470KL

Bourns Inc.In Stock: 2018SDR1006-470KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns Inc. SDR1006-470KL qualifies as a direct substitute based on the following critical parameters:

Inductance value matches at 47 µH with identical ±10% tolerance. DC resistance is equivalent at 170mOhm maximum. Both components use ferrite unshielded drum core construction with surface mount packaging. Operating temperature range is identical at -40°C to 125°C. Both parts maintain ROHS3 compliance and REACH unaffected status.

The primary distinction is current rating: the main part supports 1.45 A while the substitute supports 1.25 A. This difference requires application-level verification to confirm the substitute is suitable for the intended circuit.

Parameter Comparison

Engineering Selection Recommendations

Both the 744776147 and SDR1006-470KL maintain active product status with full ROHS3 and REACH compliance. Selection between these parts depends on circuit current requirements. The Würth Elektronik part provides higher continuous current capacity at 1.45 A. The Bourns part operates at 1.25 A continuous current but offers higher saturation current at 2.3 A compared to 1.62 A for the Würth part. Physical dimensions differ slightly: Würth measures 10.00mm × 9.00mm × 5.90mm while Bourns measures 9.80mm × 9.80mm × 5.80mm. Both footprints are compatible with nonstandard surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can SDR1006-470KL replace 744776147 in all applications?

A: Substitution is valid only when circuit current requirements do not exceed 1.25 A continuous. The lower current rating of the Bourns part is the limiting factor. If the application requires the full 1.45 A capacity of the Würth part, substitution is not appropriate.

Q: Are the physical dimensions compatible?

A: Both parts use nonstandard surface mount packages with similar footprints. Würth dimensions are 10.00mm × 9.00mm × 5.90mm height. Bourns dimensions are 9.80mm × 9.80mm × 5.80mm height. Minor dimensional differences require PCB layout verification to confirm mechanical fit.

Q: Do both parts meet the same compliance standards?

A: Yes. Both 744776147 and SDR1006-470KL are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

Q: What is the difference in saturation current between these parts?

A: The Würth 744776147 has saturation current (Isat) of 1.62 A. The Bourns SDR1006-470KL has saturation current of 2.3 A. Higher saturation current in the Bourns part indicates greater core flux handling capability before saturation occurs.

Q: Are the inductance values and tolerances identical?

A: Yes. Both parts provide 47 µH inductance with ±10% tolerance, measured at their respective test frequencies (10 kHz for Würth, 1 kHz for Bourns).