L1007C151KPWST Equivalent & Substitute Parts

Part Overview

The L1007C151KPWST 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 part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications.

Substiute Parts

L1007C151KPWST

KEMETIn Stock: 895L1007C151KPWST Datasheet

Current PartRFQ

CBC2518T151K

Taiyo YudenIn Stock: 9978CBC2518T151K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L1007C151KPWST is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Inductance value: 150 µH
• Inductance tolerance: ±10%
• Package / Case: 1007 (2518 Metric)
• Core type: Ferrite, Drum Core, Wirewound
• Shielding configuration: Unshielded
• Operating temperature range: -40°C ~ 105°C
• Frequency - Self Resonant: 7 MHz
• Mounting type: Surface Mount

Allowable Variation Parameters:

• Current Rating: Substitute parts must meet or exceed the 45 mA requirement
• DC Resistance (DCR): Substitute parts may vary within acceptable circuit design tolerances
• Product Status: Substitute parts may have different lifecycle status

The CBC2518T151K from Taiyo Yuden meets all mandatory matching parameters and exceeds the current rating requirement at 130 mA, making it a valid electrical and mechanical substitute.

Parameter Comparison

Engineering Selection Recommendations

The CBC2518T151K from Taiyo Yuden is electrically and mechanically compatible with the L1007C151KPWST. Both components share identical inductance values, tolerances, package dimensions, and operating temperature ranges. The substitute part provides a higher current rating of 130 mA compared to the original 45 mA specification, offering improved performance margin in current-limited applications.

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring compatibility with standard manufacturing and storage processes. The DC resistance difference (3.2 Ohm versus 7.93 Ohm Max) must be evaluated within the context of the specific circuit application to determine if the increased resistance is acceptable.

The CBC2518T151K is classified as "Not For New Designs," indicating limited future availability. For new product development, additional alternatives within the 150 µH, 1007 package category should be evaluated for long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can the CBC2518T151K directly replace the L1007C151KPWST in existing designs?

A: The CBC2518T151K is mechanically and electrically compatible based on matching inductance, tolerance, package dimensions, and operating temperature range. The higher current rating (130 mA versus 45 mA) and increased DC resistance (7.93 Ohm Max versus 3.2 Ohm) must be evaluated within the specific circuit application to confirm functional equivalence.

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by matching inductance value (150 µH), tolerance (±10%), package type (1007 / 2518 Metric), core material (Ferrite), shielding configuration (Unshielded), and operating temperature range (-40°C ~ 105°C). Substitute parts must meet or exceed the current rating requirement and maintain the same self-resonant frequency (7 MHz).

Q: Why does the CBC2518T151K have higher DC resistance than the original part?

A: DC resistance variation in wirewound inductors results from differences in wire gauge, winding configuration, and core material processing between manufacturers. The CBC2518T151K's 7.93 Ohm Max specification is within acceptable engineering tolerances for the 150 µH, 1007 package category. Circuit-level analysis is required to determine if this resistance increase affects performance.

Q: Are both parts suitable for new product designs?

A: The L1007C151KPWST is classified as obsolete and unsuitable for new designs. The CBC2518T151K is classified as "Not For New Designs," indicating limited future availability. For new product development, evaluation of actively produced alternatives in the 150 µH, 1007 package category is recommended for supply chain continuity.

Q: Do both parts meet environmental and compliance requirements?

A: Both the L1007C151KPWST and CBC2518T151K are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. Both parts are classified as EAR99 under export control regulations and fall under HTSUS code 8504.50.8000. Compliance requirements are equivalent between the two parts.