Würth Elektronik 7447902 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 7447902 is a 100 nH unshielded multilayer inductor rated for 250 mA with a maximum DC resistance of 300mOhm, packaged in 0805 (2012 Metric) surface mount format. This component is designed for high-frequency applications requiring low inductance values with controlled impedance characteristics. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter range.

Substiute Parts

7447902

Würth ElektronikIn Stock: 28937447902 Datasheet

Current PartRFQ

CV201210-R10K

Bourns Inc.In Stock: 11631CV201210-R10K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7447902 is determined by strict equivalence across the following critical parameters:

• Inductance value: 100 nH with ±10% tolerance
• Current rating: minimum 250 mA
• DC resistance: maximum 300mOhm
• Package format: 0805 (2012 Metric) surface mount
• Operating temperature range: -55°C to 125°C minimum
• Regulatory compliance: RoHS3 and REACH status

The Bourns CV201210-R10K meets all electrical and mechanical requirements for direct substitution. While the CV201210-R10K features shielding (compared to the unshielded 7447902), both parts maintain identical inductance, current rating, DC resistance, and thermal specifications. The shielded variant may provide additional electromagnetic isolation in sensitive applications without compromising the core electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the Würth Elektronik 7447902 and Bourns CV201210-R10K are active production components with full RoHS3 compliance and REACH unaffected status. Selection between these parts should be based on application-specific requirements:

The 7447902 (unshielded) is suitable for applications where electromagnetic coupling or radiation is not a design constraint. The CV201210-R10K (shielded) provides additional electromagnetic isolation and may be preferred in densely populated PCB layouts or noise-sensitive circuits. Both parts maintain identical electrical performance across the specified inductance, current, and resistance parameters.

Physical dimensions differ marginally: the CV201210-R10K is 0.05mm wider and 0.05mm shorter than the 7447902. These dimensional variations are within typical PCB layout tolerances for 0805 components and do not affect functional compatibility in standard surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can the Bourns CV201210-R10K directly replace the Würth Elektronik 7447902 in production?

A: Yes. Both parts share identical inductance (100 nH), current rating (250 mA), DC resistance (300mOhm max), and operating temperature range (-55°C to 125°C). The primary difference is shielding configuration. Verify PCB layout accommodates the CV201210-R10K's 1.25mm width versus the 7447902's 1.20mm width.

Q: What is the significance of the shielding difference?

A: The CV201210-R10K includes electromagnetic shielding, which reduces radiated emissions and susceptibility to external electromagnetic interference. The 7447902 is unshielded. In applications with tight EMI requirements or high-density component placement, the shielded variant may provide performance benefits.

Q: Are there any compliance or certification differences?

A: No. Both parts are RoHS3 compliant, REACH unaffected, and carry identical regulatory certifications (ECCN: EAR99, HTSUS: 8504.50.8000).

Q: Do the self-resonant frequency differences affect substitution?

A: The CV201210-R10K has a self-resonant frequency of 235 MHz compared to the 7447902's 225 MHz. This 10 MHz difference is within normal manufacturing variation for multilayer inductors and does not affect substitution eligibility for applications operating below these frequencies.

Q: What is the moisture sensitivity level, and does it affect handling?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard surface mount handling procedures apply without special dry-pack requirements.