CML0306-3N3-CNH Equivalent & Substitute Parts

Part Overview

The CML0306-3N3-CNH is a 3.3 nH shielded thin film inductor manufactured by Delta Electronics/Cyntec, rated for 450 mA with a maximum DC resistance of 300mOhm. This component is designed for surface mount applications in the 0201 (0603 Metric) package format. The part is currently obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications.

Substiute Parts

CML0306-3N3-CNH

Delta Electronics/CyntecIn Stock: 716CML0306-3N3-CNH Datasheet

Current PartRFQ

LQP03TN3N3B02D

Murata ElectronicsIn Stock: 78876LQP03TN3N3B02D Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CML0306-3N3-CNH is determined by the following critical parameters:

• Inductance Value: 3.3 nH (tolerance ±0.2nH for the original part)
• Current Rating: 450 mA minimum
• Package Format: 0201 (0603 Metric) surface mount
• DC Resistance: Must not exceed 300mOhm to maintain circuit performance
• Operating Temperature: Must support -40°C ~ 85°C minimum range
• Compliance: RoHS compliance required

The substitute part LQP03TN3N3B02D meets these core electrical and mechanical requirements. While this substitute differs in shielding type (unshielded versus shielded) and construction method (thick film versus thin film), it maintains electrical equivalence within the specified parameter tolerances and package constraints.

Parameter Comparison

Engineering Selection Recommendations

The LQP03TN3N3B02D is an active, in-stock substitute for the obsolete CML0306-3N3-CNH. Selection of this substitute is supported by the following factors:

• Both components maintain identical inductance values (3.3 nH) and current ratings (450 mA)
• The substitute exhibits lower DC resistance (250mOhm Max versus 300mOhm Max), providing improved performance characteristics
• Both components are housed in the same 0201 (0603 Metric) surface mount package, ensuring mechanical compatibility
• The substitute offers an extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 85°C), providing greater thermal flexibility
• Both components maintain unlimited moisture sensitivity classification (MSL 1)
• Both components are RoHS compliant and REACH unaffected

The primary design consideration is the difference in shielding architecture. The original part features shielding, while the substitute is unshielded. This difference must be evaluated within the context of the specific application's electromagnetic interference (EMI) requirements and circuit layout constraints.

Frequently Asked Questions (FAQ)

Q: Can LQP03TN3N3B02D be used as a direct replacement for CML0306-3N3-CNH?

A: Yes, from an electrical and mechanical standpoint. Both components share identical inductance values, current ratings, and package formats. The primary design consideration is the shielding difference, which must be assessed based on application-specific EMI performance requirements.

Q: What is the significance of the shielding difference?

A: The original CML0306-3N3-CNH is shielded, while the LQP03TN3N3B02D is unshielded. Shielded inductors provide better isolation from external electromagnetic fields. In applications where EMI performance is critical, the unshielded substitute may require circuit layout optimization or additional filtering measures.

Q: Are the DC resistance values compatible?

A: Yes. The substitute's maximum DC resistance of 250mOhm is lower than the original's 300mOhm maximum, representing an improvement in this parameter. This lower resistance reduces power dissipation and heat generation.

Q: Do both parts meet compliance requirements?

A: Yes. Both components are RoHS compliant and REACH unaffected. The substitute carries ROHS3 compliance, which represents current regulatory standards.

Q: What is the package compatibility?

A: Both components use the 0201 (0603 Metric) surface mount package with identical physical dimensions (0.024" L x 0.012" W, 0.61mm x 0.31mm length and width; 0.013" maximum seated height). They are mechanically interchangeable on PCB layouts.

Q: Is the substitute part currently available?

A: Yes. The LQP03TN3N3B02D is an active product with substantial inventory availability (78,794 pieces in stock), ensuring supply chain continuity compared to the obsolete original part.