CML0510-1N8-CNH Equivalent & Substitute Parts

Part Overview

The CML0510-1N8-CNH is a 1.8 nH shielded thin film inductor manufactured by Delta Electronics/Cyntec in the CML0510 series. This component is rated for 930 mA maximum current with 100 mOhm DC resistance and operates across -40°C to 125°C. The part is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement.

Substiute Parts

CML0510-1N8-CNH

Delta Electronics/CyntecIn Stock: 1009CML0510-1N8-CNH Datasheet

Current PartRFQ

744901018

Würth ElektronikIn Stock: 3862744901018 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CML0510-1N8-CNH is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 1.8 nH (exact match required)
• Package / Case: 0402 (1005 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -40°C ~ 125°C (minimum requirement)

Secondary Compatibility Factors:

• Current Rating: Substitute must meet or exceed 930 mA
• DC Resistance: Substitute must not exceed 100 mOhm Max
• RoHS Compliance: Required for regulatory alignment

The identified substitute part 744901018 (Würth Elektronik WE-TCI series) matches the primary criteria of inductance value and package form factor. However, differences exist in shielding configuration, current rating, and DC resistance that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The 744901018 (Würth Elektronik WE-TCI) presents a viable substitute path for the obsolete CML0510-1N8-CNH based on the following factors:

Compliance Alignment: Both parts maintain RoHS and REACH compliance, supporting regulatory requirements for new designs and procurement continuity.

Physical Compatibility: Identical package dimensions (0402 / 1005 Metric) and footprint enable direct PCB layout compatibility. The substitute's lower seated height (0.016" vs 0.020") provides additional clearance margin.

Critical Deviations Requiring Application Assessment: The substitute part exhibits three significant parameter differences that must be evaluated against specific circuit requirements:

1. Current Rating: The 744901018 is rated for 560 mA maximum, compared to the original 930 mA rating. Applications requiring current levels between 560 mA and 930 mA cannot use this substitute without thermal and reliability analysis.

2. DC Resistance: The substitute exhibits 200 mOhm maximum DCR versus the original 100 mOhm maximum. This doubling of resistance increases power dissipation and may impact circuit performance in current-sensitive applications.

3. Shielding Configuration: The original part is shielded while the substitute is unshielded. Shielded inductors provide electromagnetic interference (EMI) containment. Applications requiring EMI suppression or operating in electromagnetically noisy environments must account for this difference.

Active Product Status: The substitute part maintains active manufacturing status with 3780 pieces in stock, ensuring long-term availability and supply chain stability compared to the obsolete original.

Frequently Asked Questions (FAQ)

Q: Can the 744901018 be used as a direct drop-in replacement for the CML0510-1N8-CNH?

A: Physical and electrical compatibility exists for the inductance value and package form factor. However, the substitute's lower current rating (560 mA vs 930 mA), higher DC resistance (200 mOhm vs 100 mOhm), and unshielded configuration require circuit-level evaluation. Direct substitution is only valid if the application operates within the substitute's electrical specifications.

Q: What is the impact of the shielding difference?

A: The original CML0510-1N8-CNH is shielded, containing electromagnetic fields within the component. The 744901018 is unshielded, allowing field radiation. In circuits sensitive to EMI or operating in electromagnetically noisy environments, the unshielded substitute may introduce coupling effects or susceptibility issues not present with the original shielded design.

Q: How does the higher DC resistance of the substitute affect circuit performance?

A: The 744901018's 200 mOhm maximum DCR compared to the original 100 mOhm maximum doubles the resistive component. This increases I²R power dissipation proportionally with current flow. In high-current or precision applications, this additional dissipation may alter thermal performance, efficiency, or signal integrity.

Q: Is the 744901018 suitable for applications requiring 930 mA current?

A: No. The 744901018 is rated for 560 mA maximum current. Operating at currents above this rating violates the component's electrical specifications and may result in thermal runaway, saturation, or premature failure. Applications requiring 930 mA operation must identify alternative substitutes or continue sourcing the original part through secondary markets.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the CML0510-1N8-CNH (RoHS Compliant) and 744901018 (ROHS3 Compliant) meet RoHS requirements. Both maintain REACH Unaffected status. Moisture sensitivity level is identical (MSL 1 - Unlimited) for both parts.

Q: What are the key parameters that must match for substitution?

A: Inductance value (1.8 nH), package form factor (0402 / 1005 Metric), and mounting type (Surface Mount) are non-negotiable matching criteria. Current rating, DC resistance, and shielding configuration must be evaluated against specific application requirements to determine substitution validity.