L1007C1R5MPWST Equivalent & Substitute Parts

Part Overview

The L1007C1R5MPWST is a 1.5 µH unshielded drum core wirewound inductor manufactured by KEMET in the 1007 (2518 Metric) surface mount package. This component is rated for 400 mA continuous current with 70 mOhm DC resistance 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 design support and procurement continuity.

Substiute Parts

L1007C1R5MPWST

KEMETIn Stock: 998L1007C1R5MPWST Datasheet

Current PartRFQ

CBC2518T1R5M

Taiyo YudenIn Stock: 4347CBC2518T1R5M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L1007C1R5MPWST is determined by strict equivalence across the following critical parameters:

Mandatory Matching Criteria:

• Inductance value: 1.5 µH
• Inductance tolerance: ±20%
• Package / Case: 1007 (2518 Metric)
• Core type: Ferrite drum core, wirewound
• Shielding configuration: Unshielded
• Mounting type: Surface mount
• Operating temperature range: -40°C to 105°C minimum
• Self-resonant frequency: 80 MHz

Allowable Variation Parameters:

• Current rating: Substitute must equal or exceed 400 mA
• DC resistance: Substitute specifications are acceptable within component design tolerances
• Saturation current: Substitute specifications are acceptable when provided

The CBC2518T1R5M from Taiyo Yuden satisfies all mandatory matching criteria and provides enhanced current rating capability (1.19 A versus 400 mA), making it a direct functional equivalent for the obsolete L1007C1R5MPWST.

Parameter Comparison

Engineering Selection Recommendations

The CBC2518T1R5M from Taiyo Yuden is the direct functional equivalent for the obsolete L1007C1R5MPWST. Both components are classified as discontinued products; however, the CBC2518T1R5M maintains higher current rating capability (1.19 A versus 400 mA) and is currently available in inventory (4275 pieces in stock versus 910 pieces for the original part).

Both parts carry ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for applications requiring environmental compliance. The identical package footprint (1007 / 2518 Metric), mounting type (surface mount), and electrical specifications (1.5 µH inductance, ±20% tolerance, 80 MHz self-resonant frequency) enable direct board-level substitution without design modification.

The increased DC resistance of the CBC2518T1R5M (143 mOhm maximum versus 70 mOhm) must be evaluated within the context of the specific application circuit. For applications where the original 400 mA current rating is the limiting factor, the Taiyo Yuden substitute provides enhanced current handling capability.

Frequently Asked Questions (FAQ)

Q: Can the CBC2518T1R5M be used as a direct replacement for the L1007C1R5MPWST on existing PCBs?

A: Yes. Both components use the identical 1007 (2518 Metric) surface mount package with matching footprint dimensions (0.098" L × 0.071" W, 2.50 mm × 1.80 mm length and width; 0.079" maximum seated height, 2.00 mm). No PCB layout modification is required.

Q: What is the impact of the higher DC resistance in the CBC2518T1R5M?

A: The CBC2518T1R5M specifies 143 mOhm maximum DC resistance compared to 70 mOhm for the L1007C1R5MPWST. This parameter affects power dissipation and voltage drop across the inductor. Circuit designers must evaluate whether the increased resistance is acceptable for the intended application, particularly in low-voltage or high-current circuits where resistive losses are critical.

Q: Are both parts suitable for new designs?

A: Both the L1007C1R5MPWST and CBC2518T1R5M are classified as discontinued products (Obsolete and Not For New Designs, respectively). Neither part is recommended for new design initiation. For new applications, consultation with component suppliers for current production alternatives in the 1.5 µH, 1007 package category is necessary.

Q: Do the parts have identical electrical performance at the specified test frequency?

A: Both components are tested at 7.96 MHz inductance frequency and share identical self-resonant frequency specifications (80 MHz). Inductance values and tolerances (1.5 µH ±20%) are equivalent across both parts.

Q: What are the compliance and environmental differences between these parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry Moisture Sensitivity Level 1 (unlimited). No compliance or environmental restrictions differentiate the two components. Both are classified under ECCN EAR99 for export control purposes.

Q: Is the higher current rating of the CBC2518T1R5M a disadvantage?

A: No. The 1.19 A current rating of the CBC2518T1R5M exceeds the 400 mA rating of the L1007C1R5MPWST, providing additional design margin and flexibility. This enhanced capability does not introduce incompatibility; it expands the operational envelope of the substitute component.