CLF7045T-150M Equivalent & Substitute Parts

Part Overview

The CLF7045T-150M is a 15 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 2.1 A continuous current with a maximum DC resistance of 61.2 mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across the industrial temperature range of -40°C to 105°C and is suitable for surface mount applications in nonstandard package configurations.

Substiute Parts

CLF7045T-150M

TDK CorporationIn Stock: 2179CLF7045T-150M Datasheet

Current PartRFQ

VLS6045EX-150M

TDK CorporationIn Stock: 4333VLS6045EX-150M Datasheet

MFR RecommendedRFQ

CDRR75NP-150MC

Sumida America Components Inc.In Stock: 1042CDRR75NP-150MC Datasheet

MFR RecommendedRFQ

CDRR7D45T125NP-150MC

Sumida America Components Inc.In Stock: 809CDRR7D45T125NP-150MC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CLF7045T-150M is determined by the following critical parameters:

• Inductance Value: Must be 15 µH with ±20% tolerance
• Core Type & Shielding: Ferrite core with shielded construction required
• Current Rating: Minimum 2.1 A continuous current capability
• DC Resistance: Maximum 61.2 mOhm to maintain circuit performance
• Operating Temperature: Minimum -40°C to 105°C range
• Mounting & Package: Surface mount, nonstandard package configuration
• Moisture Sensitivity: MSL 1 classification

Three active substitute parts meet these criteria and are available from manufacturers TDK Corporation and Sumida America Components Inc.

Parameter Comparison

Engineering Selection Recommendations

VLS6045EX-150M (TDK Corporation) is the primary recommended substitute. This active part is manufactured by the same supplier as the obsolete CLF7045T-150M, ensuring design continuity. It exceeds the current rating requirement at 2.5 A versus 2.1 A, provides superior saturation current performance at 3.1 A, and maintains ROHS3 compliance. The slightly elevated DC resistance of 75 mOhm versus 61.2 mOhm remains within acceptable circuit tolerance margins for most applications. Inventory availability is substantial at 4,242 pieces.

CDRR75NP-150MC (Sumida America Components Inc.) serves as a secondary substitute with active product status and ROHS3 compliance. Current rating of 2.07 A closely matches the original specification, and DC resistance of 63 mOhm is nearly equivalent to the CLF7045T-150M. Extended operating temperature range to 125°C provides additional thermal margin. This option is suitable for applications where TDK sourcing is not feasible.

CDRR7D45T125NP-150MC (Sumida America Components Inc.) is a tertiary option with AEC-Q200 automotive qualification and RoHS compliance. The current rating of 1.85 A falls below the original 2.1 A specification and should be evaluated only for applications with reduced current demands. The extended temperature range to 125°C and automotive-grade certification make this suitable for automotive and harsh environment applications.

Frequently Asked Questions (FAQ)

Q: Can VLS6045EX-150M directly replace CLF7045T-150M in existing designs?

A: Yes. Both parts share identical inductance value (15 µH), tolerance (±20%), core material (ferrite), shielding, and operating temperature range. The VLS6045EX-150M provides higher current rating (2.5 A vs. 2.1 A) and improved saturation current (3.1 A vs. 2.3 A), making it a direct upgrade. The DC resistance increase from 61.2 mOhm to 75 mOhm is within typical circuit design margins.

Q: What is the impact of increased DC resistance in substitute parts?

A: DC resistance directly affects power dissipation and voltage drop across the inductor. The VLS6045EX-150M at 75 mOhm versus the original 61.2 mOhm represents approximately 22% higher resistance. For a 2.1 A circuit, this translates to additional power loss of approximately 27 mW. Circuit thermal analysis should confirm acceptability for the specific application.

Q: Are all substitute parts surface mount compatible with the original footprint?

A: All substitute parts are surface mount nonstandard package types. However, physical dimensions vary: CLF7045T-150M measures 7.20mm × 6.90mm × 4.80mm height, while VLS6045EX-150M measures 6.00mm × 6.00mm × 4.50mm. CDRR75NP-150MC and CDRR7D45T125NP-150MC measure 6.90mm × 6.90mm and 7.20mm × 7.20mm respectively. PCB layout verification is required before substitution.

Q: Which substitute part offers the best compliance profile?

A: VLS6045EX-150M and CDRR75NP-150MC both carry ROHS3 compliance. CDRR7D45T125NP-150MC carries RoHS compliance with additional AEC-Q200 automotive qualification. All three parts are REACH unaffected and classified as EAR99 for export control purposes.

Q: What is the saturation current significance for inductor selection?

A: Saturation current (Isat) defines the maximum current before the inductor core saturates and inductance degrades. The CLF7045T-150M has Isat of 2.3 A. VLS6045EX-150M provides superior margin at 3.1 A Isat. CDRR75NP-150MC and CDRR7D45T125NP-150MC have lower Isat values (1.15 A and 1.64 A respectively), requiring careful evaluation for applications approaching the 2.1 A continuous rating.

Q: Is temperature range extension in substitute parts beneficial?

A: CDRR75NP-150MC and CDRR7D45T125NP-150MC extend the upper operating temperature to 125°C versus the original 105°C. This provides additional thermal margin for applications in elevated ambient conditions or high-power dissipation scenarios. The lower temperature limit remains -40°C across all parts, maintaining full industrial temperature range coverage.