CML0510-4N7-CNH Equivalent & Substitute Parts

Part Overview

The CML0510-4N7-CNH is a 4.7 nH shielded thin film inductor manufactured by Delta Electronics/Cyntec, designed for surface mount applications in the 0402 (1005 Metric) package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part delivers 340 mA current rating with 400mOhm maximum DC resistance and operates across the -40°C to 125°C temperature range.

Substiute Parts

CML0510-4N7-CNH

Delta Electronics/CyntecIn Stock: 783CML0510-4N7-CNH Datasheet

Current PartRFQ

ATFC-0402HQ-4N7B-T

Abracon LLCIn Stock: 9076ATFC-0402HQ-4N7B-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CML0510-4N7-CNH is determined by the following critical parameters:

Mandatory Matching Criteria:

• Inductance value: 4.7 nH (exact match required)
• Package / Case: 0402 (1005 Metric) (physical compatibility)
• Mounting Type: Surface Mount (assembly compatibility)

Allowable Variation Parameters:

• Inductance Tolerance: Tighter tolerance acceptable (±0.1nH acceptable for ±0.2nH requirement)
• Current Rating: Minimum 330 mA acceptable (substitute rated at 330 mA vs. original 340 mA)
• DC Resistance: Up to 500mOhm acceptable (substitute at 500mOhm vs. original 400mOhm)
• Operating Temperature: Minimum -40°C to 85°C acceptable (substitute range vs. original -40°C to 125°C)
• Shielding: Unshielded acceptable as functional substitute (different electromagnetic isolation approach)

The ATFC-0402HQ-4N7B-T meets all mandatory matching criteria and falls within allowable variation parameters for current rating, DC resistance, and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The ATFC-0402HQ-4N7B-T qualifies as a functional substitute for the obsolete CML0510-4N7-CNH based on the following factors:

Compliance & Regulatory: Both parts maintain REACH Unaffected status and comply with RoHS requirements (original RoHS Compliant; substitute ROHS3 Compliant). Both carry EAR99 ECCN classification and identical HTSUS codes, ensuring regulatory alignment.

Product Availability: The substitute part carries Active product status with 9035 units in stock, providing production continuity against the obsolete status of the original part.

Electrical Compatibility: Identical inductance value (4.7 nH) and self-resonant frequency (7GHz) ensure functional equivalence in circuit operation. The tighter inductance tolerance (±0.1nH vs. ±0.2nH) of the substitute provides improved precision.

Thermal & Current Considerations: The substitute operates at -40°C to 85°C versus the original -40°C to 125°C. Applications requiring operation above 85°C require thermal analysis. The 330 mA current rating (versus 340 mA original) represents a 2.9% reduction; circuits operating near the original 340 mA limit require current margin verification.

Electromagnetic Characteristics: The substitute is unshielded versus the original shielded design. Applications sensitive to electromagnetic coupling or operating in high-noise environments require evaluation of shielding necessity.

Frequently Asked Questions (FAQ)

Q: Can the ATFC-0402HQ-4N7B-T directly replace the CML0510-4N7-CNH in all applications?

A: Direct replacement is possible for applications operating within -40°C to 85°C temperature range and drawing less than 330 mA. The unshielded design of the substitute may affect performance in electromagnetically sensitive circuits compared to the shielded original.

Q: What is the impact of the 100 mOhm increase in DC resistance?

A: The substitute exhibits 500mOhm maximum DCR versus 400mOhm for the original, representing a 25% increase. This results in proportionally higher resistive losses. For circuits where DCR-induced losses are critical, thermal and efficiency analysis is required.

Q: Are the package dimensions identical?

A: Both parts use the 0402 (1005 Metric) package with identical length and width (0.039" L x 0.020" W / 1.00mm x 0.50mm). The substitute has a lower seated height (0.015" / 0.37mm versus 0.020" / 0.50mm), which may provide clearance advantages in space-constrained layouts.

Q: Does the unshielded design affect circuit performance?

A: Unshielded inductors exhibit different electromagnetic coupling characteristics than shielded designs. Applications in high-frequency or electromagnetically noisy environments should evaluate whether shielding is functionally required for the specific circuit topology.

Q: What is the significance of the different Q factor measurements?

A: The original part specifies Q of 9 @ 100MHz; the substitute specifies Q of 16 @ 500MHz. These measurements occur at different frequencies, making direct comparison invalid. Q factor performance at the actual operating frequency of the application determines suitability.

Q: Is the tighter inductance tolerance of the substitute beneficial?

A: The substitute's ±0.1nH tolerance (versus ±0.2nH original) provides improved inductance precision. This benefits applications requiring tight inductance control but does not negatively impact circuits designed for the original ±0.2nH tolerance.