L1007C151MPWST Equivalent & Substitute Parts

Part Overview

The L1007C151MPWST is a 150 µH unshielded drum core wirewound inductor manufactured by KEMET in the 1007 (2518 Metric) surface mount package. This component is designed for applications requiring moderate inductance values with a current rating of 45 mA and a DC resistance of 3.2 Ohm.

The L1007C151MPWST has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductor specification.

Substiute Parts

L1007C151MPWST

KEMETIn Stock: 763L1007C151MPWST Datasheet

Current PartRFQ

CBC2518T151K

Taiyo YudenIn Stock: 9978CBC2518T151K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the L1007C151MPWST are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Inductance value: 150 µH
• Package / Case: 1007 (2518 Metric)
• Core type: Ferrite drum core, unshielded
• Mounting type: Surface mount
• Operating temperature range: -40°C to 105°C
• Self-resonant frequency: 7 MHz
• Inductance test frequency: 796 kHz

Secondary Compatibility Factors:

• Physical dimensions must match or be compatible with the 1007 (2518 Metric) footprint
• RoHS3 compliance and MSL 1 rating ensure environmental and handling compatibility
• DC resistance and current rating variations are acceptable within application-specific design margins

The CBC2518T151K from Taiyo Yuden meets all primary matching criteria and maintains full mechanical and electrical compatibility with the L1007C151MPWST footprint and functional specifications.

Parameter Comparison

Engineering Selection Recommendations

L1007C151MPWST (KEMET): The original KEMET part has reached obsolete status and is no longer recommended for new designs. However, existing inventory of 748 pieces remains available for legacy system support and maintenance applications. This part maintains full ROHS3 compliance and MSL 1 rating.

CBC2518T151K (Taiyo Yuden): The Taiyo Yuden CBC2518T151K is the primary substitute for the L1007C151MPWST. This part is classified as "Not For New Designs" but offers superior electrical performance characteristics. The CBC2518T151K provides:

• Tighter inductance tolerance (±10% versus ±20%)
• Higher current rating (130 mA versus 45 mA)
• Defined saturation current specification (140 mA)
• Identical package footprint and physical dimensions
• Full ROHS3 compliance and MSL 1 rating
• Identical operating temperature range and self-resonant frequency

The CBC2518T151K is suitable for direct substitution in applications where the original L1007C151MPWST is no longer available. The higher current rating and tighter tolerance provide design margin improvements over the original specification.

Frequently Asked Questions (FAQ)

Q: Can the CBC2518T151K be used as a direct replacement for the L1007C151MPWST?

A: Yes. Both parts share identical inductance values (150 µH), package designations (1007 / 2518 Metric), physical dimensions, core type (ferrite drum core, unshielded), operating temperature range (-40°C to 105°C), and self-resonant frequency (7 MHz). The CBC2518T151K is mechanically and electrically compatible with the L1007C151MPWST footprint.

Q: What are the differences between these two parts?

A: The primary differences are inductance tolerance (±10% for CBC2518T151K versus ±20% for L1007C151MPWST), current rating (130 mA versus 45 mA), and DC resistance (7.93 Ohm Max versus 3.2 Ohm). The CBC2518T151K also specifies a saturation current of 140 mA, which is not provided for the L1007C151MPWST.

Q: Are there any packaging differences between these parts?

A: No. Both parts use the 1007 (2518 Metric) surface mount package with identical physical dimensions of 0.098" L x 0.071" W x 0.079" H (2.50mm x 1.80mm x 2.00mm). Both are supplied in standard surface mount packaging formats.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the L1007C151MPWST and CBC2518T151K are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. Both are classified under ECCN EAR99 and HTSUS 8504.50.8000.

Q: What is the significance of the product status designations?

A: The L1007C151MPWST is marked as "Obsolete," indicating that KEMET has discontinued this part. The CBC2518T151K is marked as "Not For New Designs," indicating that Taiyo Yuden recommends against using this part in new product development. Both designations reflect the age of these inductor designs. For new applications, consult current manufacturer catalogs for actively supported alternatives.

Q: How do the DC resistance values affect circuit performance?

A: The L1007C151MPWST has a DC resistance of 3.2 Ohm, while the CBC2518T151K has a maximum DC resistance of 7.93 Ohm. Higher DC resistance increases power dissipation and heat generation in the inductor. Applications sensitive to resistive losses should account for this difference during circuit analysis and thermal design.

Q: Can the higher current rating of the CBC2518T151K cause any issues?

A: No. A higher current rating indicates the part can safely handle greater current levels without saturation or thermal damage. The CBC2518T151K's 130 mA rating is a superset of the L1007C151MPWST's 45 mA rating, making it suitable for applications operating at or below the original current specification.