CLF7045T-151M-H Equivalent & Substitute Parts

Part Overview

The CLF7045T-151M-H is a 150 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 670 mA continuous current with 480mOhm DC resistance. This component is classified as Not For New Designs, indicating it has been superseded in TDK's product portfolio. Finding equivalent or substitute parts is necessary for ongoing support of legacy systems, design revisions, or when primary inventory becomes unavailable.

Substiute Parts

CLF7045T-151M-H

TDK CorporationIn Stock: 2338CLF7045T-151M-H Datasheet

Current PartRFQ

CLF7045NIT-151M-D

TDK CorporationIn Stock: 4711CLF7045NIT-151M-D Datasheet

MFR RecommendedRFQ

46154C

Murata Power Solutions Inc.In Stock: 212346154C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CLF7045T-151M-H is determined by the following critical parameters:

• Inductance Value: Must be 150 µH with ±20% tolerance
• Current Rating: Must support minimum 670 mA continuous current
• Shielding: Must be shielded to maintain electromagnetic isolation
• Core Type: Must be wirewound construction
• Mounting: Must be surface mount compatible
• DC Resistance: Should not significantly exceed 480mOhm to avoid thermal performance degradation
• Environmental Compliance: Must maintain ROHS3 compliance and operate within -40°C ~ 125°C range

Two substitute parts meet these criteria: CLF7045NIT-151M-D (TDK Corporation) and 46154C (Murata Power Solutions Inc.). Both maintain the 150 µH inductance specification, support higher current ratings than the original part, and preserve shielded wirewound construction with surface mount packaging.

Parameter Comparison

Engineering Selection Recommendations

CLF7045NIT-151M-D is the primary recommended substitute. It is manufactured by TDK Corporation, the same supplier as the original part, ensuring design continuity and supply chain consistency. This part carries Active product status, confirming ongoing availability and manufacturer support. It provides improved specifications with 690 mA current rating and extended operating temperature range (-55°C ~ 150°C), while maintaining ROHS3 compliance and AEC-Q200 automotive qualification. The DC resistance increase to 520mOhm Max is within acceptable tolerance for most applications. Physical dimensions are marginally larger but remain compatible with standard surface mount assembly processes.

46154C is an alternative substitute from Murata Power Solutions Inc. It offers the highest current rating at 720 mA and maintains Active product status with ROHS3 compliance. However, the DC resistance specification of 720mOhm Max represents a significant increase from the original 480mOhm, which may impact thermal performance in current-limited applications. The inductance test frequency of 10 kHz differs from the original 100 kHz specification. This part is suitable for applications where higher current capacity is prioritized and thermal dissipation is not a constraint.

Frequently Asked Questions (FAQ)

Q: Can CLF7045NIT-151M-D be used as a direct replacement for CLF7045T-151M-H?

A: Yes. Both parts maintain 150 µH inductance at ±20% tolerance, shielded wirewound drum core construction, and surface mount packaging. The CLF7045NIT-151M-D supports higher current (690 mA vs. 670 mA) and operates across a wider temperature range (-55°C ~ 150°C vs. -40°C ~ 125°C). Physical dimensions differ slightly but remain within standard PCB assembly tolerances.

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

A: The CLF7045NIT-151M-D increases DCR from 480mOhm to 520mOhm Max, a 40mOhm increase. The 46154C increases DCR to 720mOhm Max, a 240mOhm increase. Higher DC resistance generates additional heat dissipation (P = I²R). For the original 670 mA rating, the CLF7045NIT-151M-D adds approximately 27 mW additional dissipation. The 46154C adds approximately 323 mW. Thermal analysis is required for applications operating at maximum current ratings.

Q: Are there physical compatibility concerns with substitute parts?

A: All three parts are surface mount inductors with nonstandard packages. The CLF7045NIT-151M-D and 46154C have slightly larger footprints (7.40mm x 7.00mm and 7.30mm x 7.30mm respectively) compared to the original (7.20mm x 6.90mm). Height differences are minimal (4.80mm, 4.55mm, and 4.50mm respectively). PCB layout verification is recommended to confirm clearance in space-constrained designs.

Q: Why does 46154C have a different inductance test frequency?

A: The 46154C is tested at 10 kHz while the original and CLF7045NIT-151M-D are tested at 100 kHz. Inductance values can vary slightly across frequency ranges due to core material characteristics. For applications requiring inductance measurement at specific frequencies, the test frequency difference should be considered during validation.

Q: What compliance certifications apply to these parts?

A: All three parts are ROHS3 compliant and REACH unaffected. The CLF7045NIT-151M-D carries AEC-Q200 automotive qualification, indicating suitability for automotive applications. The original CLF7045T-151M-H and 46154C do not list AEC-Q200 certification.