Würth Elektronik 7447905 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 7447905 is a 1 µH unshielded multilayer inductor rated for 50 mA with a maximum DC resistance of 400 mOhm, packaged in 0805 (2012 Metric) surface mount format. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified when design requirements permit alternative shielding configurations or when primary component availability is constrained.

Substiute Parts

7447905

Würth ElektronikIn Stock: 50177447905 Datasheet

Current PartRFQ

CV201210-1R0K

Bourns Inc.In Stock: 40463CV201210-1R0K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7447905 is determined by the following critical parameters:

• Inductance value: 1 µH (exact match required)
• Current rating: 50 mA minimum
• DC resistance: 400 mOhm maximum
• Package: 0805 (2012 Metric) surface mount
• Operating temperature: -55°C ~ 125°C minimum range
• Tolerance: ±10%

The Bourns CV201210-1R0K meets all electrical and mechanical substitution criteria. The primary difference is shielding configuration: the 7447905 is unshielded while the CV201210-1R0K is shielded. Both components share identical inductance, current rating, DC resistance, package dimensions, and operating temperature specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the Würth Elektronik 7447905 and Bourns CV201210-1R0K are Active product status components with full RoHS3 and REACH compliance. Selection between these parts is based on circuit design requirements regarding electromagnetic shielding. The unshielded 7447905 is suitable for applications where EMI coupling is not a concern. The shielded CV201210-1R0K provides electromagnetic isolation and is appropriate for noise-sensitive circuits. Both components meet identical electrical specifications for inductance, current rating, and DC resistance, and are mechanically compatible within the 0805 package footprint.

Frequently Asked Questions (FAQ)

Q: Can the Bourns CV201210-1R0K replace the Würth Elektronik 7447905 in all applications?

A: The CV201210-1R0K is electrically and mechanically compatible based on matching inductance (1 µH), current rating (50 mA), DC resistance (400 mOhm max), and 0805 package specifications. The primary difference is shielding. Shielded inductors provide EMI isolation; unshielded inductors do not. Circuit design requirements determine whether shielding is necessary.

Q: What is the difference in self-resonant frequency between these parts?

A: The 7447905 has a self-resonant frequency of 85 MHz, while the CV201210-1R0K is rated at 75 MHz. Both are tested at 10 MHz. This difference reflects the different core materials and shielding configurations but does not affect substitution eligibility for standard 1 µH inductor applications.

Q: Are the physical dimensions identical?

A: Both parts use the 0805 (2012 Metric) package with identical length and width (0.079" L x 0.049" W / 2.00mm x 1.25mm). The seated height differs slightly: 7447905 is 0.043" (1.10mm) maximum, while CV201210-1R0K is 0.041" (1.05mm) maximum. Both are compatible with standard 0805 PCB footprints.

Q: Do both parts meet regulatory compliance requirements?

A: Yes. Both the 7447905 and CV201210-1R0K are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (Unlimited moisture sensitivity level). Both carry EAR99 ECCN classification and HTSUS code 8504.50.8000.