L1008S4R7MDMIT Equivalent & Substitute Parts

Part Overview

The L1008S4R7MDMIT is a 4.7 µH shielded multilayer ferrite-core inductor manufactured by KEMET, rated for 1.1 A continuous current with a maximum DC resistance of 160 mOhm. This surface-mount component is packaged in the 1008 (2520 Metric) form factor and operates across the temperature range of -40°C to 85°C.

The L1008S4R7MDMIT carries an 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

L1008S4R7MDMIT

KEMETIn Stock: 4035L1008S4R7MDMIT Datasheet

Current PartRFQ

L1008Q4R7MDMIT

KEMETIn Stock: 2582L1008Q4R7MDMIT Datasheet

Parametric EquivalentRFQ

ASMPH-1008-4R7M-T

Abracon LLCIn Stock: 2230ASMPH-1008-4R7M-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the L1008S4R7MDMIT is determined by the following critical parameters:

Mandatory Matching Parameters:

• Inductance: 4.7 µH
• Inductance Tolerance: ±20%
• Current Rating: 1.1 A minimum
• Package / Case: 1008 (2520 Metric)
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C ~ 85°C minimum
• Shielding: Shielded configuration
• Core Material: Ferrite

Allowable Variation Parameters:

• DC Resistance (DCR): Substitute parts may have lower DCR values than the 160 mOhm maximum specification, as lower resistance provides equivalent or improved performance
• Packaging Format: Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR) formats are interchangeable for component procurement
• Product Status: Active status parts are preferred over Obsolete status for long-term availability

Substitute parts identified in this reference meet all mandatory matching parameters and maintain electrical and mechanical compatibility with the original L1008S4R7MDMIT specification.

Parameter Comparison

Engineering Selection Recommendations

L1008Q4R7MDMIT (KEMET Parametric Equivalent)

The L1008Q4R7MDMIT is a direct parametric equivalent to the L1008S4R7MDMIT, maintaining identical electrical specifications including 4.7 µH inductance, 1.1 A current rating, and 160 mOhm maximum DC resistance. Both components share the same L-DMI series designation and are manufactured by KEMET. The L1008Q4R7MDMIT carries Obsolete product status, similar to the main part. This substitute is suitable for applications where KEMET component continuity is required and where the 160 mOhm DCR specification is a design requirement. Current inventory availability is 2,569 pieces.

ASMPH-1008-4R7M-T (Abracon Direct Manufacturer Substitute)

The ASMPH-1008-4R7M-T is a direct manufacturer substitute from Abracon LLC that meets all mandatory electrical and mechanical parameters. This component provides a lower DC resistance of 110 mOhm compared to the 160 mOhm maximum of the original part, resulting in reduced power dissipation and improved thermal performance. The ASMPH-1008-4R7M-T carries Active product status, providing superior long-term supply chain availability compared to the Obsolete L1008S4R7MDMIT. The component is packaged in Tape & Reel (TR) format and features a reduced seated height of 0.039" (1.00mm) versus 0.079" (2.00mm) for the original part. All three components maintain ROHS3 compliance, MSL 1 rating, and identical operating temperature ranges. Current inventory availability is 2,191 pieces.

For new designs or applications requiring extended component availability, the ASMPH-1008-4R7M-T is the preferred selection due to its Active status and improved electrical characteristics. For legacy system support requiring exact parameter matching, the L1008Q4R7MDMIT provides continuity within the KEMET product line.

Frequently Asked Questions (FAQ)

Q: Can the L1008Q4R7MDMIT be used as a direct replacement for the L1008S4R7MDMIT?

A: Yes. The L1008Q4R7MDMIT is a parametric equivalent with identical inductance (4.7 µH), current rating (1.1 A), DC resistance (160 mOhm Max), package (1008 / 2520 Metric), and operating temperature range (-40°C ~ 85°C). Both components are KEMET products within the L-DMI series and are electrically and mechanically interchangeable.

Q: What is the primary advantage of the ASMPH-1008-4R7M-T over the L1008S4R7MDMIT?

A: The ASMPH-1008-4R7M-T offers two significant advantages: (1) Active product status, ensuring long-term availability and supply chain support, and (2) lower DC resistance of 110 mOhm compared to 160 mOhm maximum, reducing power dissipation and thermal load in the circuit.

Q: Are there physical dimension differences between these inductors?

A: The ASMPH-1008-4R7M-T has a reduced seated height of 0.039" (1.00mm) compared to 0.079" (2.00mm) for both KEMET parts. The length and width dimensions remain identical at 0.098" L x 0.079" W (2.50mm x 2.00mm). This height difference may be relevant for applications with strict PCB clearance constraints.

Q: Do all three parts meet RoHS and environmental compliance requirements?

A: Yes. The L1008S4R7MDMIT, L1008Q4R7MDMIT, and ASMPH-1008-4R7M-T are all ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. All three components are suitable for applications requiring environmental compliance certification.

Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging?

A: Both packaging formats contain the same component and are suitable for automated assembly processes. Cut Tape & Digi-Reel® format is typically used for smaller order quantities, while Tape & Reel format is standard for high-volume production runs. The electrical and mechanical specifications of the component remain identical regardless of packaging format.

Q: Can the ASMPH-1008-4R7M-T be used in applications originally designed for the L1008S4R7MDMIT?

A: Yes. The ASMPH-1008-4R7M-T meets all mandatory electrical parameters (4.7 µH inductance, 1.1 A current rating, ±20% tolerance, shielded ferrite core) and operates within the identical temperature range (-40°C ~ 85°C). The lower DC resistance provides improved performance characteristics. The reduced seated height should be verified against PCB layout constraints.

Q: Why is the L1008S4R7MDMIT marked as Obsolete?

A: Obsolete status indicates that the manufacturer has discontinued active production and support for this component. Identifying equivalent and substitute parts ensures design continuity and supply chain reliability for applications currently utilizing this inductor.