CWL0306-10N-JNH Equivalent & Substitute Parts

Part Overview

The CWL0306-10N-JNH is a 10 nH shielded thin film inductor manufactured by Delta Electronics/Cyntec, designed for surface mount applications in the 0201 (0603 Metric) package. This component is rated for 400 mA continuous current with a maximum DC resistance of 380 mOhm and operates across the temperature range of -40°C to 125°C. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

CWL0306-10N-JNH

Delta Electronics/CyntecIn Stock: 838CWL0306-10N-JNH Datasheet

Current PartRFQ

LQP03HQ10NJ02D

Murata ElectronicsIn Stock: 20221LQP03HQ10NJ02D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CWL0306-10N-JNH is evaluated based on the following critical parameters:

• Inductance Value: Must match 10 nH ±5% tolerance
• Package Compatibility: Must be 0201 (0603 Metric) surface mount
• Current Rating: Substitute must support minimum 400 mA continuous current
• DC Resistance: Must not exceed 380 mOhm maximum
• Operating Temperature Range: Must cover -40°C to 125°C minimum
• Frequency Characteristics: Self resonant frequency and Q factor at 500 MHz should be comparable

The LQP03HQ10NJ02D from Murata Electronics meets the core electrical specifications for inductance, package, and frequency characteristics. However, the current rating differential (300 mA vs. 400 mA) and shielding configuration difference (unshielded vs. shielded) represent design trade-offs that must be evaluated within specific application contexts.

Parameter Comparison

Engineering Selection Recommendations

The LQP03HQ10NJ02D serves as an active production alternative to the obsolete CWL0306-10N-JNH. Both components share identical inductance values, tolerance specifications, and package dimensions, ensuring mechanical and electrical compatibility at the circuit board level.

Selection between these parts depends on application-specific requirements:

Current Capacity Consideration: The main part supports 400 mA continuous current, while the substitute is rated for 300 mA. Applications requiring the full 400 mA rating must verify that circuit operation remains within the 300 mA limit of the substitute, or alternative components must be sourced.

Shielding Configuration: The main part incorporates shielding, while the substitute is unshielded. In applications where electromagnetic interference mitigation is critical, the unshielded configuration may introduce coupling effects. Circuit-level analysis is necessary to determine if this difference impacts performance.

Compliance Status: Both components maintain RoHS compliance. The substitute carries ROHS3 Compliant status and REACH Unaffected designation, supporting current regulatory requirements for new designs and production.

Temperature Range: The substitute provides an extended lower operating temperature limit (-55°C vs. -40°C), offering broader environmental coverage for applications requiring enhanced cold-temperature performance.

Frequently Asked Questions (FAQ)

Q: Can the LQP03HQ10NJ02D directly replace the CWL0306-10N-JNH in all applications?

A: Direct replacement is possible for applications where circuit current does not exceed 300 mA and where unshielded inductor operation is acceptable. Applications requiring the full 400 mA rating or shielded performance require circuit-level evaluation.

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

A: The main part is shielded, reducing electromagnetic radiation and susceptibility to external fields. The substitute is unshielded, which may increase coupling to nearby circuit elements. The significance depends on circuit layout, operating frequency, and proximity to sensitive components.

Q: Are both parts compatible with the same PCB footprint?

A: Yes. Both components use the 0201 (0603 Metric) package with identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.017" (0.42mm).

Q: What is the difference between thin film and thick film inductor construction?

A: The main part uses thin film technology, while the substitute uses thick film construction. Thin film inductors typically offer higher Q factors and lower DCR, while thick film inductors provide robust performance across broader environmental conditions. Both achieve the specified 10 nH inductance and ±5% tolerance.

Q: Does the higher self-resonant frequency of the substitute affect circuit performance?

A: The substitute exhibits a self-resonant frequency of 4.5 GHz compared to 4 GHz for the main part. This difference is negligible for most applications operating below 1 GHz. For circuits operating near or above 2 GHz, frequency response characteristics should be verified through simulation or testing.

Q: Are there inventory or lead time advantages to using the substitute?

A: The substitute (LQP03HQ10NJ02D) is in active production status with significantly higher inventory availability (20,121 pcs vs. 817 pcs for the main part), supporting shorter lead times and improved supply chain continuity.