CWL0306-3N3-CNH Equivalent & Substitute Parts

Part Overview

The CWL0306-3N3-CNH is a 3.3 nH shielded thin film inductor manufactured by Delta Electronics/Cyntec, rated for 800 mA with a maximum DC resistance of 90mOhm. Designed for surface mount applications in the 0201 (0603 Metric) package, this component is classified as obsolete. Due to its discontinued status, identifying compatible substitute parts is essential for ongoing production support, design revisions, and inventory management.

Substiute Parts

CWL0306-3N3-CNH

Delta Electronics/CyntecIn Stock: 732CWL0306-3N3-CNH Datasheet

Current PartRFQ

LQP03PN3N3C02D

Murata ElectronicsIn Stock: 14911LQP03PN3N3C02D Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CWL0306-3N3-CNH is determined by the following critical parameters:

• Inductance Value: Must match 3.3 nH with tolerance ±0.2nH
• Current Rating: Must support minimum 800 mA
• Package / Case: Must be 0201 (0603 Metric) for mechanical and electrical compatibility
• DC Resistance: Must not exceed 90mOhm to maintain circuit performance
• Operating Temperature Range: Must cover the required -40°C ~ 125°C minimum
• RoHS Compliance: Must meet RoHS requirements for regulatory alignment

The LQP03PN3N3C02D from Murata Electronics meets these substitution criteria. While it differs in shielding type (unshielded versus shielded) and construction method (thick film versus thin film), the electrical parameters and physical package remain compatible for direct substitution in applications where electromagnetic shielding is not a critical design requirement.

Parameter Comparison

Engineering Selection Recommendations

The LQP03PN3N3C02D is a direct electrical substitute for the CWL0306-3N3-CNH based on matching inductance value, tolerance, current rating, DC resistance, package dimensions, and operating temperature range. The substitute part carries Active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment.

The primary design consideration is the difference in shielding architecture. The main part features shielding, while the substitute is unshielded. This distinction affects electromagnetic interference (EMI) characteristics and should be evaluated within the specific circuit context. In applications where EMI isolation is not a design constraint, the LQP03PN3N3C02D provides equivalent electrical performance with superior DC resistance characteristics (80mOhm versus 90mOhm maximum).

The substitute part's extended lower operating temperature limit (-55°C versus -40°C) provides additional thermal margin for demanding environments.

Frequently Asked Questions (FAQ)

Q: Can the LQP03PN3N3C02D replace the CWL0306-3N3-CNH in all applications?

A: Electrical substitution is valid for inductance value, current rating, and DC resistance. However, the unshielded construction of the substitute differs from the shielded design of the main part. Applications requiring electromagnetic shielding must evaluate whether unshielded operation is acceptable for the specific circuit design.

Q: What is the significance of the shielding difference?

A: Shielded inductors reduce radiated EMI and are less susceptible to external electromagnetic fields. Unshielded inductors occupy less board space and typically exhibit lower cost. The choice depends on circuit-level EMI requirements and board layout constraints.

Q: Are the physical dimensions identical?

A: Both parts use the 0201 (0603 Metric) package with identical length and width (0.024" L x 0.012" W / 0.60mm x 0.30mm). The seated height differs slightly: 0.017" (0.42mm) for the main part versus 0.013" (0.33mm) for the substitute. This minor height difference does not affect PCB assembly compatibility.

Q: Does the DC resistance difference impact circuit performance?

A: The substitute part has lower maximum DC resistance (80mOhm versus 90mOhm), which reduces resistive losses and heat generation. This represents an improvement over the main part specification.

Q: Are both parts RoHS compliant?

A: Yes. The main part is RoHS Compliant, and the substitute is ROHS3 Compliant, meeting current regulatory requirements for hazardous substance restrictions.

Q: What is the moisture sensitivity level for both parts?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.