CLF7045T-151M Equivalent & Substitute Parts

Part Overview

The CLF7045T-151M is a 150 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 610 mA continuous current with a maximum DC resistance of 576 mOhm. This surface mount component operates across the temperature range of -40°C to 105°C and is designed for applications requiring fixed inductance in compact form factors.

The CLF7045T-151M is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy systems or redesigns incorporating active alternatives.

Substiute Parts

CLF7045T-151M

TDK CorporationIn Stock: 1278CLF7045T-151M Datasheet

Current PartRFQ

VLS6045EX-151M

TDK CorporationIn Stock: 26174VLS6045EX-151M Datasheet

MFR RecommendedRFQ

DR74-151-R

Eaton - Electronics DivisionIn Stock: 5898DR74-151-R Datasheet

MFR RecommendedRFQ

DRA74-151-R

Eaton - Electronics DivisionIn Stock: 17802DRA74-151-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CLF7045T-151M are qualified based on the following electrical and mechanical parameters:

• Inductance Value: All substitutes maintain 150 µH ±20% tolerance, matching the primary specification
• Current Rating: Substitute parts must support minimum 610 mA continuous current; higher ratings provide design margin
• DC Resistance: Substitutes with DCR values at or below 576 mOhm maintain equivalent power dissipation characteristics
• Saturation Current (Isat): Substitutes must exceed or equal 670 mA to prevent core saturation under specified operating conditions
• Shielding: All substitutes are shielded, maintaining electromagnetic isolation properties
• Core Material: Ferrite core construction is maintained across all substitutes
• Operating Temperature: Substitutes must support the minimum -40°C to 105°C range; extended ranges provide additional margin
• Mounting Type: All substitutes are surface mount compatible with standard pick-and-place equipment
• Package Compatibility: Physical dimensions and height must accommodate existing PCB layouts

Parameter Comparison

Engineering Selection Recommendations

VLS6045EX-151M (TDK Corporation - Active)

This substitute offers the closest electrical performance match with improved current handling (700 mA vs. 610 mA) and higher saturation current (900 mA). The VLS6045EX-151M maintains identical operating temperature range and inductance test frequency. Physical dimensions are smaller (6.00 mm x 6.00 mm), which may require PCB layout verification. ROHS3 compliance and active product status ensure long-term supply availability. This part is suitable for designs where PCB space permits the reduced footprint.

DR74-151-R (Eaton - Electronics Division - Active)

This substitute provides electrical specifications within acceptable margins: 690 mA current rating, 591 mOhm DCR, and 810 mA saturation current. The extended operating temperature range (-40°C to 125°C) provides additional thermal margin. Physical dimensions (7.60 mm x 7.60 mm) are slightly larger than the original part. ROHS3 compliance and active status support production continuity. This part is suitable for applications where the original footprint can accommodate minor dimensional increases.

DRA74-151-R (Eaton - Electronics Division - Active)

This substitute meets electrical requirements with 661 mA current rating and 748 mA saturation current. The highest operating temperature range (-40°C to 165°C) among all substitutes provides maximum thermal headroom. AEC-Q200 automotive qualification is included. Physical dimensions match DR74-151-R (7.60 mm x 7.60 mm). ROHS3 compliance and active status ensure supply continuity. This part is suitable for applications requiring automotive-grade reliability or extended temperature operation.

Frequently Asked Questions (FAQ)

Q: Can VLS6045EX-151M be used as a direct replacement for CLF7045T-151M?

A: VLS6045EX-151M meets all electrical substitution criteria: 150 µH inductance, 700 mA current rating (exceeds 610 mA requirement), 900 mA saturation current (exceeds 670 mA requirement), and identical operating temperature range. The smaller footprint (6.00 mm x 6.00 mm vs. 7.20 mm x 6.90 mm) requires PCB layout verification to confirm available space.

Q: What is the primary difference between DR74-151-R and DRA74-151-R?

A: Both parts share identical physical dimensions (7.60 mm x 7.60 mm) and similar electrical performance. DRA74-151-R includes AEC-Q200 automotive qualification and supports extended operating temperature to 165°C, compared to DR74-151-R at 125°C. DRA74-151-R is specified for applications requiring automotive-grade reliability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. VLS6045EX-151M, DR74-151-R, and DRA74-151-R are all ROHS3 compliant. The original CLF7045T-151M RoHS status is not specified in available documentation.

Q: Which substitute has the lowest DC resistance?

A: DR74-151-R has the lowest DC resistance at 591 mOhm, compared to CLF7045T-151M at 576 mOhm maximum. This represents a 2.6% increase in DCR. VLS6045EX-151M (760 mOhm) and DRA74-151-R (648 mOhm) have higher DCR values.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Electrical interchangeability is confirmed for all three substitutes based on inductance, current rating, saturation current, and operating temperature specifications. Physical interchangeability requires PCB layout verification due to dimensional variations: VLS6045EX-151M is smaller (6.00 mm x 6.00 mm), while DR74-151-R and DRA74-151-R are larger (7.60 mm x 7.60 mm) than the original part.

Q: What is the significance of the 100 kHz inductance test frequency?

A: All parts, including the original and substitutes, are characterized at 100 kHz. This test frequency ensures consistent inductance measurement across all components and is standard for surface mount inductor specifications in this category.