L1007R220KPWRT Equivalent & Substitute Parts

Part Overview

The L1007R220KPWRT is a 22 µH unshielded drum core wirewound inductor manufactured by KEMET in the L-PWR series. This surface mount component is rated for 175 mA continuous current with a DC resistance of 440 mOhm 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. Substitute parts must maintain the same inductance value, package footprint, and core material while accommodating variations in current rating and DC resistance within acceptable design parameters.

Substiute Parts

L1007R220KPWRT

KEMETIn Stock: 791L1007R220KPWRT Datasheet

Current PartRFQ

CB2518T220K

Taiyo YudenIn Stock: 11272CB2518T220K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L1007R220KPWRT is determined by strict equivalence in the following parameters:

Critical Matching Parameters:

• Inductance value: 22 µH
• Inductance tolerance: ±10%
• Package / Case: 1007 (2518 Metric)
• Core material: Ferrite
• Shielding configuration: Unshielded
• Mounting type: Surface Mount
• Operating temperature range: -40°C to 105°C
• Self-resonant frequency: 19 MHz
• Inductance test frequency: 2.52 MHz

Allowable Variation Parameters:

• Current rating: Substitute parts may exceed the original 175 mA rating
• DC resistance: Substitute parts may vary from the original 440 mOhm specification
• Product status: Active or not-for-new-designs alternatives are acceptable
• Packaging format: Tape & Reel (TR) is compatible with the original packaging

The CB2518T220K from Taiyo Yuden meets all critical matching parameters and qualifies as a direct substitute despite higher current rating (580 mA) and increased DC resistance (650 mOhm max).

Parameter Comparison

Engineering Selection Recommendations

The CB2518T220K from Taiyo Yuden is a qualified substitute for the obsolete L1007R220KPWRT. Both components maintain identical inductance specifications, package dimensions, and thermal operating ranges. The substitute part provides enhanced current handling capability (580 mA versus 175 mA), which presents no compatibility issues in applications designed for the original 175 mA rating.

The increased DC resistance of the CB2518T220K (650 mOhm max versus 440 mOhm) must be evaluated within the specific circuit application. In current-limiting or filtering applications where DCR contributes to circuit performance, this variation may require circuit analysis to confirm acceptable operation.

Both parts maintain ROHS3 compliance, unlimited moisture sensitivity rating (MSL 1), and REACH unaffected status, ensuring regulatory compatibility across manufacturing and deployment environments. The CB2518T220K is available in Tape & Reel packaging format, supporting automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the CB2518T220K be used as a direct replacement for the L1007R220KPWRT in existing designs?

A: Yes. Both components share identical inductance values (22 µH), package footprints (1007 / 2518 Metric), core materials (ferrite), and operating temperature ranges (-40°C to 105°C). The substitute part is mechanically and electrically compatible for PCB assembly and circuit integration.

Q: What is the significance of the higher current rating in the CB2518T220K?

A: The CB2518T220K is rated for 580 mA continuous current compared to the L1007R220KPWRT's 175 mA rating. This higher rating does not create compatibility issues in applications requiring only 175 mA. The component will operate safely at lower current levels with reduced thermal stress.

Q: How does the increased DC resistance of the CB2518T220K affect circuit performance?

A: The CB2518T220K exhibits a maximum DC resistance of 650 mOhm compared to 440 mOhm in the original part. This 210 mOhm increase may impact circuits where DCR contributes to voltage drop, filtering characteristics, or power dissipation. Circuit-level analysis is necessary to determine if this variation remains within design tolerances.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the L1007R220KPWRT and CB2518T220K are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity ratings. Both components meet current environmental and regulatory requirements for manufacturing and deployment.

Q: What packaging formats are available for the CB2518T220K?

A: The CB2518T220K is supplied in Tape & Reel (TR) format, which is compatible with automated pick-and-place assembly equipment. This packaging format supports high-volume production environments.

Q: Why is the L1007R220KPWRT classified as obsolete?

A: The L1007R220KPWRT is marked as obsolete by KEMET, indicating the manufacturer has discontinued production. The CB2518T220K, while marked as not-for-new-designs, remains available from inventory and provides functional equivalence for replacement and maintenance applications.