Würth Elektronik 74479652 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74479652 is an unshielded multilayer inductor with 2.2 µH inductance, designed for surface mount applications in the 0603 (1608 Metric) package. This component operates across the industrial temperature range of -55°C to 125°C and is classified as Active product status with full RoHS3 compliance. Substitute parts are identified to provide alternative sourcing options when the primary component is unavailable or when design requirements permit functional equivalents with differing electrical characteristics within acceptable tolerance bands.

Substiute Parts

74479652

Würth ElektronikIn Stock: 2416474479652 Datasheet

Current PartRFQ

CS160808-2R2K

Bourns Inc.In Stock: 3940CS160808-2R2K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Würth Elektronik 74479652 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 2.2 µH (±10% tolerance band)
• Package / Case: 0603 (1608 Metric) surface mount form factor
• Operating temperature range: -55°C ~ 125°C minimum
• RoHS3 compliance status
• Moisture Sensitivity Level: 1 or equivalent

Secondary Compatibility Factors:

• Current rating must equal or exceed 15 mA minimum requirement
• DC resistance must not exceed 1 Ohm maximum specification
• Core material type (ferrite-based compositions acceptable)
• Shielding configuration (unshielded primary; shielded acceptable if EMI isolation not contraindicated)

The identified substitute part, Bourns Inc. CS160808-2R2K, meets all primary matching criteria and exceeds secondary compatibility factors through higher current rating (50 mA vs. 15 mA) and lower DC resistance (900 mOhm vs. 1 Ohm maximum). Both components share identical inductance specification, package geometry, temperature operating range, and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

Primary Component Selection: The Würth Elektronik 74479652 remains the specified component for applications requiring the exact electrical and mechanical characteristics defined in the original design. Active product status and full RoHS3 compliance ensure continued availability and regulatory conformance.

Substitute Component Selection: The Bourns Inc. CS160808-2R2K qualifies as a direct functional substitute when the primary component is unavailable. Selection of this substitute is appropriate when:

• Circuit design permits operation with shielded inductor configuration
• Higher current rating (50 mA) and lower DC resistance (900 mOhm) do not introduce unintended circuit behavior
• Self-resonant frequency difference (45 MHz vs. 55 MHz) remains within acceptable bandwidth parameters for the application
• Higher Q factor (50 vs. 35 at 10 MHz) does not create undesired frequency response characteristics

Both components maintain identical RoHS3 compliance, moisture sensitivity classification, and operating temperature specifications. Mechanical compatibility is confirmed through identical 0603 (1608 Metric) package geometry and surface mount mounting type.

Frequently Asked Questions (FAQ)

Q: Can the Bourns CS160808-2R2K be used as a direct replacement for the Würth Elektronik 74479652?

A: Yes, the Bourns component qualifies as a functional substitute. Both inductors share identical 2.2 µH inductance, ±10% tolerance, 0603 package form factor, and operating temperature range. The substitute provides superior electrical performance through higher current rating and lower DC resistance. The primary difference is shielding configuration; the Bourns part includes shielding while the Würth part is unshielded. Verify that shielded operation does not contradict circuit EMI requirements.

Q: What are the key differences between these two inductors?

A: The primary differences are: (1) Shielding—Würth is unshielded, Bourns is shielded; (2) Current rating—Würth 15 mA, Bourns 50 mA; (3) DC resistance—Würth 1 Ohm maximum, Bourns 900 mOhm maximum; (4) Q factor—Würth 35 at 10 MHz, Bourns 50 at 10 MHz; (5) Self-resonant frequency—Würth 55 MHz, Bourns 45 MHz. Inductance value, tolerance, package, and temperature range are identical.

Q: Are both components RoHS3 compliant?

A: Yes. Both the Würth Elektronik 74479652 and Bourns CS160808-2R2K are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited) classification, confirming equivalent regulatory and environmental handling requirements.

Q: Does the shielding difference affect circuit performance?

A: Shielding provides EMI isolation benefits. The Bourns shielded inductor reduces electromagnetic interference radiation and susceptibility compared to the unshielded Würth component. In applications where EMI control is beneficial, the shielded substitute offers performance advantages. In circuits where unshielded operation is specifically required, the original Würth component must be used.

Q: Can I use the Bourns part in a high-frequency application?

A: The Bourns CS160808-2R2K operates with a self-resonant frequency of 45 MHz, compared to 55 MHz for the Würth part. For applications operating near or above 45 MHz, verify that the lower SRF does not create unintended resonance effects. The higher Q factor (50 vs. 35) may provide improved performance in certain frequency-dependent circuits.

Q: Are there any package or mounting differences?

A: No. Both inductors use identical 0603 (1608 Metric) surface mount packages with dimensions of 0.063" L x 0.031" W (1.60mm x 0.80mm). Height specifications are nearly identical (Würth 1.00mm maximum, Bourns 0.95mm maximum), confirming mechanical interchangeability on PCB layouts.