Würth Elektronik 744774215 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744774215 is a 150 µH unshielded drum core wirewound inductor rated for 460 mA continuous current with a maximum DC resistance of 1.1Ohm. 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 and maintains full RoHS3 and REACH compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductor category.

Substiute Parts

744774215

Würth ElektronikIn Stock: 2343744774215 Datasheet

Current PartRFQ

SDR0604-151KL

Bourns Inc.In Stock: 1367SDR0604-151KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 744774215 is determined by strict equivalence across the following critical parameters:

• Inductance value: 150 µH with ±10% tolerance
• Core type and shielding configuration: Ferrite, unshielded drum core
• DC resistance: 1.1Ohm maximum
• Operating temperature range: -40°C to 125°C minimum
• Mounting technology: Surface mount, nonstandard package
• Regulatory compliance: RoHS3 and REACH status

The Bourns SDR0604-151KL meets these substitution criteria. While the current rating differs (400 mA versus 460 mA), the saturation current specification of 540 mA is identical, and the lower continuous current rating represents a more conservative design margin. All electrical and mechanical parameters remain within acceptable substitution boundaries for this inductor category.

Parameter Comparison

Engineering Selection Recommendations

Both the Würth Elektronik 744774215 and Bourns SDR0604-151KL are active production components with full RoHS3 compliance and REACH unaffected status. Selection between these parts should be based on:

• Current requirement: The 744774215 supports 460 mA continuous current, while the SDR0604-151KL is rated for 400 mA. Applications requiring the full 460 mA rating must use the Würth part.
• Availability and lead time: Both parts maintain active inventory. The 744774215 has 2310 units in stock; the SDR0604-151KL has 1304 units available.
• Dimensional tolerance: The 744774215 measures 5.80mm L × 5.20mm W × 4.85mm H; the SDR0604-151KL measures 5.80mm L × 5.80mm W × 4.80mm H. PCB layout constraints may favor one geometry over the other.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SDR0604-151KL replace the Würth Elektronik 744774215 in all applications?

A: The SDR0604-151KL is suitable for applications where the continuous current requirement does not exceed 400 mA. If your circuit requires the full 460 mA rating, the Würth part must be used. Both parts share identical inductance, DC resistance, saturation current, and operating temperature specifications.

Q: What is the significance of the different current ratings?

A: The 744774215 is rated for 460 mA continuous current, while the SDR0604-151KL is rated for 400 mA. Both reach saturation at 540 mA. The lower continuous rating on the Bourns part indicates a more conservative thermal design. Selection depends on your actual circuit current requirements.

Q: Are there dimensional differences that affect PCB layout?

A: Yes. The 744774215 has a width of 5.20mm, while the SDR0604-151KL has a width of 5.80mm. Heights are similar (4.85mm versus 4.80mm). Verify that your PCB footprint accommodates the substitute part's dimensions before implementation.

Q: Do both parts meet the same compliance standards?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (unlimited moisture sensitivity). They are equivalent from a regulatory and environmental standpoint.

Q: What is the inductance test frequency for each part?

A: The 744774215 is tested at 10 kHz, while the SDR0604-151KL is tested at 1 kHz. Both maintain the 150 µH specification within ±10% tolerance at their respective test frequencies.