CML0306-18N-HNH Equivalent & Substitute Parts

Part Overview

The CML0306-18N-HNH is a 18 nH shielded thin film inductor manufactured by Delta Electronics/Cyntec, designed for surface mount applications in the 0201 (0603 Metric) package. This component operates across -40°C to 85°C with a maximum DC resistance of 1.7Ohm and supports 160 mA current rating. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

CML0306-18N-HNH

Delta Electronics/CyntecIn Stock: 747CML0306-18N-HNH Datasheet

Current PartRFQ

LQP03TN18NH02D

Murata ElectronicsIn Stock: 105139LQP03TN18NH02D Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CML0306-18N-HNH is determined by the following critical parameters:

Mandatory Matching Parameters:

• Inductance value: 18 nH
• Package / Case: 0201 (0603 Metric)
• Tolerance: ±3%
• Mounting Type: Surface Mount

Allowable Variation Parameters:

• Current Rating: Substitute must meet or exceed 160 mA
• DC Resistance (DCR): Substitute must not exceed 1.7Ohm Max
• Operating Temperature: Substitute range must encompass or exceed -40°C ~ 85°C
• Shielding: Shielded or unshielded acceptable based on circuit requirements
• RoHS / REACH Compliance: Substitute must maintain equivalent compliance status

The LQP03TN18NH02D from Murata Electronics meets the mandatory matching parameters and provides enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The LQP03TN18NH02D is an active product with current manufacturing support and enhanced availability (105,100 pcs in stock versus 642 pcs for the obsolete CML0306-18N-HNH). Both components maintain identical inductance values and tolerance specifications within the 0201 package footprint.

The substitute part provides superior electrical performance: 200 mA current rating exceeds the original 160 mA requirement, and 800mOhm maximum DCR is significantly lower than the original 1.7Ohm specification. The extended operating temperature range (-55°C ~ 125°C) encompasses the original specification window.

Both components maintain equivalent RoHS and REACH compliance status with MSL 1 rating. The primary design consideration is the shielding difference: the original CML0306-18N-HNH is shielded while the LQP03TN18NH02D is unshielded. Circuit-level electromagnetic interference analysis determines whether this substitution is appropriate for the specific application.

Frequently Asked Questions (FAQ)

Q: Can the LQP03TN18NH02D directly replace the CML0306-18N-HNH in all applications?

A: Direct replacement is possible from an electrical and mechanical standpoint. Both components share identical inductance (18 nH), tolerance (±3%), and 0201 package specifications. The substitute provides superior current handling (200 mA vs. 160 mA) and lower DC resistance (800mOhm vs. 1.7Ohm). The primary consideration is the shielding difference; unshielded operation may introduce electromagnetic coupling in sensitive circuits where the original shielded design was specified.

Q: What is the significance of the shielding difference?

A: The CML0306-18N-HNH features shielded construction, which reduces electromagnetic radiation and susceptibility to external fields. The LQP03TN18NH02D is unshielded. In high-density layouts or noise-sensitive applications, this difference may affect circuit performance. Circuit-level analysis is required to determine compatibility.

Q: Are there compliance or supply chain advantages to using the substitute?

A: The LQP03TN18NH02D is an active product with significantly higher inventory availability (105,100 pcs vs. 642 pcs). Both components maintain RoHS and REACH compliance. The substitute's active status ensures long-term supply continuity, whereas the original CML0306-18N-HNH is obsolete with limited remaining stock.

Q: Do the operating temperature ranges affect substitution suitability?

A: The original component operates -40°C to 85°C. The substitute operates -55°C to 125°C, which fully encompasses the original range. The extended temperature capability of the substitute provides additional design margin and is not a limiting factor for substitution.

Q: What packaging formats are available for the LQP03TN18NH02D?

A: The substitute is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, supporting both manual and automated assembly processes. The 0201 (0603 Metric) package dimensions match the original component exactly.