Würth Elektronik 74479052 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74479052 is a 2.2 µH unshielded multilayer inductor rated for 30 mA with a maximum DC resistance of 600mOhm, 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 they maintain the same electrical specifications—inductance value, current rating, tolerance, and operating temperature range—while potentially varying in shielding configuration, core material, or DC resistance within acceptable tolerances.

Substiute Parts

74479052

Würth ElektronikIn Stock: 319674479052 Datasheet

Current PartRFQ

CV201210-2R2K

Bourns Inc.In Stock: 2205CV201210-2R2K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74479052 is determined by the following critical parameters:

• Inductance Value: Must be 2.2 µH with ±10% tolerance
• Current Rating: Must support minimum 30 mA
• Package Format: Must be 0805 (2012 Metric) surface mount
• Operating Temperature Range: Must cover -55°C to 125°C
• DC Resistance: Must not exceed 650mOhm (allowing minor variance from the 600mOhm specification)
• Compliance: Must maintain ROHS3 and REACH compliance status

Secondary parameters such as shielding configuration (shielded vs. unshielded), core material composition, and Q factor at 10 MHz may vary between equivalent parts without affecting functional substitutability in most applications, provided the primary electrical and mechanical specifications are met.

Parameter Comparison

Engineering Selection Recommendations

The Bourns CV201210-2R2K qualifies as a direct substitute for the Würth Elektronik 74479052 based on matching inductance, current rating, tolerance, operating temperature range, and package format. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility in applications requiring these certifications.

The primary difference between these parts is the shielding configuration: the 74479052 is unshielded while the CV201210-2R2K is shielded. In applications where electromagnetic interference (EMI) mitigation is beneficial, the shielded variant may provide additional performance advantages. The DC resistance specification of the Bourns part (650mOhm Max) is marginally higher than the Würth part (600mOhm Max), a difference of 50mOhm that remains within acceptable tolerances for most circuit applications operating at 30 mA.

Both components are classified as Active products with full inventory availability, ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the Bourns CV201210-2R2K be used as a direct replacement for the Würth Elektronik 74479052?

A: Yes. Both components share identical inductance (2.2 µH), tolerance (±10%), current rating (30 mA), package format (0805), and operating temperature range (-55°C to 125°C). The 50mOhm difference in maximum DC resistance (650mOhm vs. 600mOhm) is within acceptable engineering margins for this application class.

Q: What is the significance of the shielding difference between these parts?

A: The 74479052 is unshielded while the CV201210-2R2K is shielded. Shielding reduces radiated electromagnetic emissions and susceptibility to external interference. Selection between shielded and unshielded variants depends on circuit layout, proximity to sensitive components, and EMI requirements specific to the application.

Q: Are both parts compliant with environmental and regulatory standards?

A: Yes. Both the 74479052 and CV201210-2R2K are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance restrictions for electronic components.

Q: Does the 5 MHz difference in self-resonant frequency affect substitutability?

A: The self-resonant frequency difference (55 MHz vs. 50 MHz) reflects minor variations in core material and construction between manufacturers. For applications operating well below these frequencies, this difference has negligible impact on functional performance.

Q: Are the physical dimensions compatible for PCB layout?

A: Yes. Both components use the 0805 (2012 Metric) package with identical footprint dimensions (0.079" L x 0.049" W). The seated height difference (1.10mm vs. 1.05mm) is minimal and does not affect standard PCB assembly processes or clearance requirements.