CLF7045T-331M-CA Equivalent & Substitute Parts

Part Overview

The CLF7045T-331M-CA is a 330 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 420 mA continuous current with a maximum DC resistance of 1.236 Ohm. This component is designed for surface mount applications in automotive and industrial circuits requiring stable inductance performance across the -40°C to 105°C operating range. The part carries AEC-Q200 automotive qualification and is currently classified as obsolete, making identification of compatible substitute components essential for ongoing production and maintenance applications.

Substiute Parts

CLF7045T-331M-CA

TDK CorporationIn Stock: 1160CLF7045T-331M-CA Datasheet

Current PartRFQ

LGJ7045TC-331M-D

TDK CorporationIn Stock: 1679LGJ7045TC-331M-D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLF7045T-331M-CA is determined by strict equivalence across the following critical parameters:

• Inductance Value: 330 µH with ±20% tolerance
• Current Rating: 420 mA minimum continuous current capability
• Saturation Current: 490 mA minimum
• DC Resistance: Must not exceed 1.236 Ohm to maintain circuit performance
• Core Type & Shielding: Ferrite core with shielding required
• Physical Footprint: 7.20mm x 6.90mm base dimensions with height compatibility
• Mounting: Surface mount configuration
• Temperature Range: Minimum -40°C to 105°C operation
• Automotive Compliance: AEC-Q200 qualification

The substitute part LGJ7045TC-331M-D meets all critical electrical parameters while offering improved DC resistance (1.03 Ohm versus 1.236 Ohm maximum) and extended upper operating temperature to 150°C. Physical dimensions remain compatible within the specified footprint.

Parameter Comparison

Engineering Selection Recommendations

The LGJ7045TC-331M-D is a direct functional equivalent to the CLF7045T-331M-CA. Both components are manufactured by TDK Corporation and carry identical AEC-Q200 automotive qualification. The substitute part provides equivalent electrical performance with the following considerations:

Advantages of LGJ7045TC-331M-D:

• Lower DC resistance (1.03 Ohm versus 1.236 Ohm maximum) reduces power dissipation
• Extended operating temperature range to 150°C provides thermal margin
• Reduced seated height (4.50mm versus 4.80mm maximum) offers improved PCB layout flexibility
• Both parts are obsolete; inventory availability should be verified with authorized distributors

Compatibility Factors:

• Identical inductance value and tolerance
• Identical current ratings and saturation characteristics
• Identical core material, shielding, and mounting configuration
• Footprint compatibility confirmed for 7.20mm x 6.90mm base dimensions
• Both components maintain MSL 1 moisture sensitivity classification

Frequently Asked Questions (FAQ)

Q: Can LGJ7045TC-331M-D be used as a direct replacement for CLF7045T-331M-CA?

A: Yes. Both components meet identical electrical specifications for inductance (330 µH ±20%), current rating (420 mA), saturation current (490 mA), and core material (ferrite with shielding). Physical footprints are compatible at 7.20mm x 6.90mm. Both carry AEC-Q200 automotive qualification.

Q: What is the impact of the lower DC resistance in the substitute part?

A: The LGJ7045TC-331M-D has 1.03 Ohm DC resistance compared to 1.236 Ohm maximum in the CLF7045T-331M-CA. Lower resistance reduces resistive losses and heat generation in the inductor, which is beneficial for circuit efficiency and thermal performance.

Q: Are there height differences that affect PCB layout?

A: The substitute part has a maximum seated height of 4.50mm compared to 4.80mm for the main part. This 0.30mm reduction provides additional clearance margin for PCB design and component placement.

Q: Do both parts meet automotive standards?

A: Yes. Both the CLF7045T-331M-CA and LGJ7045TC-331M-D carry AEC-Q200 automotive qualification and operate across -40°C to 105°C (main part) and -40°C to 150°C (substitute part).

Q: What is the significance of both parts being obsolete?

A: Obsolete status indicates these components are no longer in active production. Availability is limited to existing inventory from authorized distributors. Verification of stock and lead times is necessary before design commitment.

Q: Are packaging options different between the two parts?

A: The main part CLF7045T-331M-CA does not specify packaging details. The substitute LGJ7045TC-331M-D is available in Cut Tape (CT) and Digi-Reel packaging options, which may affect procurement and handling procedures.