CLF6045T-680M-H Equivalent & Substitute Parts

Part Overview

The CLF6045T-680M-H is a 68 µH shielded drum core wirewound inductor manufactured by TDK Corporation, designed for surface mount applications with a rated current of 1 A and DC resistance of 215 mOhm. This component is classified as "Not For New Designs," indicating it has been superseded in TDK's product portfolio. Organizations requiring this inductance value and electrical performance must evaluate qualified substitute components to ensure design continuity and supply chain reliability.

Substiute Parts

CLF6045T-680M-H

TDK CorporationIn Stock: 1656CLF6045T-680M-H Datasheet

Current PartRFQ

CLF6045NIT-680M-D

TDK CorporationIn Stock: 4165CLF6045NIT-680M-D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CLF6045T-680M-H is determined by the following critical parameters:

• Inductance Value: Must be 68 µH with ±20% tolerance to maintain circuit performance
• Core Type and Shielding: Ferrite core with shielding required for electromagnetic compatibility
• Current Handling: Rated current and saturation current must support the application's maximum current demand
• DC Resistance: Must be compatible with power dissipation and circuit impedance requirements
• Operating Temperature: Must cover the application's thermal operating range
• Mounting and Package: Surface mount configuration with compatible physical dimensions
• Compliance Standards: RoHS3 compliance and environmental certifications must be maintained

The CLF6045NIT-680M-D qualifies as a manufacturer-recommended substitute based on matching inductance, core material, shielding configuration, and compliance requirements, while offering improved product status and extended temperature range.

Parameter Comparison

Engineering Selection Recommendations

The CLF6045NIT-680M-D is the qualified substitute for the CLF6045T-680M-H based on the following engineering criteria:

Product Status: The substitute part carries Active status, ensuring continued availability and manufacturing support, whereas the main part is designated "Not For New Designs."

Compliance and Certifications: Both parts maintain ROHS3 compliance. The substitute part includes AEC-Q200 qualification, providing additional reliability assurance for automotive and high-reliability applications.

Electrical Compatibility: The substitute maintains the same 68 µH inductance and ±20% tolerance. The current rating of 810 mA is slightly lower than the main part's 1 A rating; applications operating at or below 810 mA will experience no functional difference. The saturation current of 810 mA in the substitute matches its rated current, providing consistent performance margins.

Thermal Performance: The substitute's extended operating temperature range of -55°C ~ 150°C exceeds the main part's -40°C ~ 125°C range, offering broader environmental compatibility.

DC Resistance: The substitute's maximum DCR of 240 mOhm is 25 mOhm higher than the main part's 215 mOhm. This difference results in approximately 11.6% additional power dissipation at rated current and must be evaluated against thermal design constraints.

Physical Compatibility: Both parts use nonstandard packages with similar dimensions (6.20mm x 5.90mm vs. 6.30mm x 6.00mm), requiring verification of PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the CLF6045NIT-680M-D directly replace the CLF6045T-680M-H in existing designs?

A: Direct replacement is possible for applications operating at or below 810 mA. The substitute maintains identical inductance and tolerance specifications. However, the 25 mOhm increase in maximum DCR and slightly larger physical dimensions require verification against thermal and layout constraints.

Q: What is the significance of the current rating difference between these parts?

A: The main part is rated for 1 A with a saturation current of 790 mA. The substitute is rated for 810 mA with matching saturation current. Applications drawing continuous current above 810 mA cannot use the substitute without exceeding its rated specifications.

Q: Why does the substitute have a higher DC resistance?

A: DC resistance variation is inherent to manufacturing tolerances and core material properties. The 240 mOhm maximum DCR of the substitute results in increased I²R losses. At 810 mA, this represents approximately 0.157 W of power dissipation compared to 0.174 W in the main part at 1 A.

Q: Are the physical dimensions compatible?

A: Both parts use nonstandard packages with similar but not identical dimensions. The main part measures 6.20mm x 5.90mm x 4.50mm (max height), while the substitute measures 6.30mm x 6.00mm x 4.80mm (max height). PCB layout and component placement must be verified for compatibility.

Q: What compliance advantages does the substitute offer?

A: The CLF6045NIT-680M-D includes AEC-Q200 qualification, which certifies reliability for automotive applications. Both parts maintain ROHS3 compliance and REACH unaffected status.

Q: Is the extended temperature range of the substitute beneficial?

A: The substitute's -55°C ~ 150°C operating range provides broader environmental coverage compared to the main part's -40°C ~ 125°C range. This is advantageous for applications requiring extended low-temperature operation or high-temperature environments.