L1007C331MDWIT Equivalent & Substitute Parts

Part Overview

The L1007C331MDWIT is a 330 µH unshielded drum core wirewound inductor manufactured by KEMET in the 1007 (2518 Metric) surface mount package. This component is rated for 90 mA continuous current with a maximum saturation current of 100 mA and operates across the temperature range of -40°C to 105°C.

The L1007C331MDWIT has reached obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductance value and package specification.

Substiute Parts

L1007C331MDWIT

KEMETIn Stock: 1104L1007C331MDWIT Datasheet

Current PartRFQ

CBC2518T331M

Taiyo YudenIn Stock: 3870CBC2518T331M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the L1007C331MDWIT are identified based on strict electrical and mechanical parameter matching within the allowed specifications for this product category. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Inductance value: 330 µH
• Inductance tolerance: ±20%
• Current rating: 90 mA minimum
• Saturation current: 100 mA minimum
• Package designation: 1007 (2518 Metric)
• Core type: Ferrite drum core, wirewound
• Shielding configuration: Unshielded
• Operating temperature range: -40°C to 105°C minimum
• Mounting type: Surface mount

Acceptable Variation Parameters:

• DC Resistance (DCR): Variation permitted within component design specifications
• Self resonant frequency: 4.5 MHz nominal
• Inductance test frequency: 796 kHz

Substitute parts must maintain identical package dimensions, electrical performance within tolerance bands, and environmental compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

L1007C331MDWIT (KEMET) - Obsolete Status

The KEMET L1007C331MDWIT has reached obsolete product status and is no longer recommended for new design implementations. However, 1062 pieces remain available in current inventory as new original stock. This part maintains full ROHS3 compliance and REACH unaffected status. Selection of this part is limited to legacy system support, repair applications, or existing production runs where design continuity is required.

CBC2518T331M (Taiyo Yuden) - Not For New Designs

The Taiyo Yuden CBC2518T331M is designated as "Not For New Designs" and represents an alternative source for the 330 µH inductance specification. This part is electrically and mechanically equivalent to the KEMET L1007C331MDWIT across all critical parameters. The CBC2518T331M exhibits a higher maximum DC resistance specification (15.99 Ohm versus 12.3 Ohm), which remains within acceptable design tolerances for applications where the original part is no longer available. The CBC2518T331M is supplied in Tape & Reel packaging with 3852 pieces currently in inventory. This part maintains ROHS3 compliance and REACH unaffected status.

For applications requiring active component sourcing, the CBC2518T331M provides equivalent electrical performance and mechanical compatibility with the obsolete L1007C331MDWIT within the specified parameter tolerances.

Frequently Asked Questions (FAQ)

Q: Can the CBC2518T331M directly replace the L1007C331MDWIT in existing designs?

A: Yes. Both parts share identical inductance values (330 µH), current ratings (90 mA), saturation current specifications (100 mA), package dimensions (1007/2518 Metric), operating temperature ranges (-40°C to 105°C), and core configurations (ferrite drum core, unshielded, wirewound). The CBC2518T331M exhibits a higher maximum DC resistance (15.99 Ohm versus 12.3 Ohm), which operates within the ±20% inductance tolerance band and does not affect functional compatibility.

Q: What is the primary difference between these two parts?

A: The primary difference is DC resistance specification. The KEMET L1007C331MDWIT specifies 12.3 Ohm, while the Taiyo Yuden CBC2518T331M specifies 15.99 Ohm maximum. Both values remain acceptable for applications designed around the 330 µH inductance value with ±20% tolerance. The CBC2518T331M also differs in product status (Not For New Designs versus Obsolete) and packaging format (Tape & Reel versus standard packaging).

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical compliance certifications: ROHS3 compliant, REACH unaffected, Moisture Sensitivity Level 1 (Unlimited), and equivalent ECCN/HTSUS classifications. Both parts operate across the full -40°C to 105°C temperature range.

Q: What packaging formats are available?

A: The L1007C331MDWIT is supplied in standard packaging format. The CBC2518T331M is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly operations.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts utilize identical 1007 (2518 Metric) surface mount package specifications with matching footprint dimensions (0.098" L x 0.071" W / 2.50mm x 1.80mm) and maximum seated height (0.079" / 2.00mm). PCB layouts designed for either part accommodate both without modification.

Q: What is the significance of the ±20% inductance tolerance?

A: The ±20% tolerance establishes the acceptable inductance range as 264 µH to 396 µH. Both the L1007C331MDWIT and CBC2518T331M operate within this specification band. The difference in DC resistance between these parts does not alter the inductance value or tolerance classification.

Q: Are there inventory considerations for component selection?

A: The L1007C331MDWIT has 1062 pieces available as new original stock. The CBC2518T331M has 3852 pieces available in Tape & Reel format. For ongoing production requirements, the CBC2518T331M offers greater inventory availability.