L1007C470MDWIT Equivalent & Substitute Parts

Part Overview

The L1007C470MDWIT is a 47 µH unshielded drum core wirewound inductor manufactured by KEMET in the 1007 (2518 Metric) surface mount package. This component is rated for 290 mA continuous current with a DC resistance of 1.9 Ohm and operates across the temperature range of -40°C to 105°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications.

Substiute Parts

L1007C470MDWIT

KEMETIn Stock: 1050L1007C470MDWIT Datasheet

Current PartRFQ

CBC2518T470M

Taiyo YudenIn Stock: 3500CBC2518T470M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L1007C470MDWIT is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Inductance value: 47 µH
• Inductance tolerance: ±20%
• Current rating: 290 mA minimum
• Current saturation (Isat): 240 mA minimum
• Package / Case: 1007 (2518 Metric)
• Mounting type: Surface Mount
• Core material: Ferrite
• Shielding configuration: Unshielded
• Operating temperature range: -40°C to 105°C minimum
• Self-resonant frequency: 12 MHz

Acceptable Variation Parameters:

• DC Resistance (DCR): Substitute parts may exhibit higher DCR values within the same functional class, provided all other electrical and mechanical parameters remain equivalent.

The CBC2518T470M from Taiyo Yuden meets all mandatory matching parameters and is therefore classified as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The CBC2518T470M (Taiyo Yuden) is a direct functional equivalent to the obsolete L1007C470MDWIT (KEMET). Both components satisfy identical electrical specifications, mechanical dimensions, and regulatory compliance requirements.

Product Status Consideration: The L1007C470MDWIT is classified as obsolete, while the CBC2518T470M is classified as "Not For New Designs." For applications requiring long-term component availability, the CBC2518T470M provides a viable alternative with equivalent performance characteristics.

Compliance Alignment: Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

DC Resistance Differential: The CBC2518T470M exhibits a maximum DC resistance of 2.47 Ohm compared to the L1007C470MDWIT at 1.9 Ohm. This 0.57 Ohm increase represents a 30% higher resistance value. Circuit designs dependent on minimal power dissipation or thermal performance must account for this differential during thermal analysis.

Frequently Asked Questions (FAQ)

Q: Can the CBC2518T470M be used as a direct replacement for the L1007C470MDWIT in existing designs?

A: Yes. Both components share identical inductance values (47 µH), current ratings (290 mA), saturation current (240 mA), package dimensions (1007/2518 Metric), and operating temperature ranges (-40°C to 105°C). The components are mechanically and electrically interchangeable at the board level.

Q: What is the significance of the DC resistance difference between these parts?

A: The CBC2518T470M has a maximum DC resistance of 2.47 Ohm versus 1.9 Ohm for the L1007C470MDWIT. This difference affects power dissipation and thermal performance. In applications where inductor heating is a design constraint, the higher resistance of the Taiyo Yuden part will generate additional heat under the same current conditions. Thermal analysis should be performed if the original design operated near thermal limits.

Q: Are both parts suitable for high-frequency applications?

A: Both components have a self-resonant frequency of 12 MHz and are suitable for applications operating below this frequency threshold. Circuit operation above 12 MHz may result in unpredictable impedance behavior.

Q: What are the packaging differences between these parts?

A: The L1007C470MDWIT is supplied in standard packaging format. The CBC2518T470M is supplied in Tape & Reel (TR) format. Both use identical 1007 (2518 Metric) surface mount packages and are compatible with standard pick-and-place assembly equipment.

Q: Do both parts meet current environmental and regulatory standards?

A: Yes. Both the L1007C470MDWIT and CBC2518T470M are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. Both parts meet current environmental and regulatory requirements for commercial and industrial applications.

Q: What is the tolerance specification for inductance in both parts?

A: Both components carry a ±20% inductance tolerance. This tolerance applies to the measured inductance value at the specified test frequency of 2.52 MHz. Circuit designs must account for this tolerance range in inductance-critical applications.