L1008Q3R3MDMIT Equivalent & Substitute Parts

Part Overview

The L1008Q3R3MDMIT is a 3.3 µH shielded multilayer inductor manufactured by KEMET, designed for surface mount applications in the 1008 (2520 Metric) package. This component is rated for 1.1 A maximum current with a DC resistance of 150mOhm maximum and operates across the temperature range of -40°C to 85°C. The part is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure long-term supply chain reliability.

Substiute Parts

L1008Q3R3MDMIT

KEMETIn Stock: 3103L1008Q3R3MDMIT Datasheet

Current PartRFQ

MLP2520H3R3MT0S1

TDK CorporationIn Stock: 6924MLP2520H3R3MT0S1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L1008Q3R3MDMIT is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Inductance value: 3.3 µH
• Current rating: 1.1 A minimum
• Package / Case: 1008 (2520 Metric)
• Shielding type: Shielded
• Core material: Ferrite
• Mounting type: Surface Mount
• Tolerance: ±20%
• RoHS3 compliance

Allowable Variation Parameters:

• DC Resistance (DCR): Substitute parts may exceed the original 150mOhm specification provided the increase does not compromise circuit performance
• Operating temperature range: Substitute parts with extended temperature ranges are acceptable
• Product status: Active parts are preferred over obsolete classifications

The TDK Corporation MLP2520H3R3MT0S1 meets all mandatory matching criteria and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The MLP2520H3R3MT0S1 from TDK Corporation is the qualified substitute for the obsolete L1008Q3R3MDMIT. Selection of this substitute is supported by the following factors:

Compliance and Regulatory Status: Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment across design transitions.

Product Lifecycle: The TDK component carries active product status, providing assured long-term availability and supply chain continuity compared to the obsolete KEMET part.

Electrical Equivalence: Inductance, current rating, tolerance, and shielding specifications are identical. The DC resistance increase from 150mOhm to 169mOhm represents a 12.7% variance within acceptable engineering margins for inductor applications.

Thermal Performance: The extended operating temperature range of the TDK substitute (-40°C to 125°C versus -40°C to 85°C) provides additional thermal margin and operational flexibility.

Physical Compatibility: Both components share identical footprint dimensions (2.50mm x 2.00mm) and package classification (1008 / 2520 Metric), enabling direct PCB layout compatibility. The reduced seated height of the TDK component (1.00mm versus 2.00mm) presents no mechanical interference concerns.

Frequently Asked Questions (FAQ)

Q: Can the MLP2520H3R3MT0S1 be used as a direct replacement for the L1008Q3R3MDMIT without PCB modifications?

A: Yes. Both components share identical footprint dimensions and package specifications (1008 / 2520 Metric). The reduced height of the TDK component does not create compatibility issues. No PCB layout changes are required.

Q: What is the significance of the DC resistance difference between the two parts?

A: The L1008Q3R3MDMIT specifies 150mOhm maximum DCR, while the MLP2520H3R3MT0S1 specifies 169mOhm maximum. This 19mOhm difference represents approximately 12.7% variance. For most inductor applications, this variance falls within acceptable operating parameters and does not compromise circuit functionality.

Q: Does the extended temperature range of the TDK substitute affect compatibility?

A: No. The MLP2520H3R3MT0S1 operates from -40°C to 125°C, exceeding the original -40°C to 85°C range. Extended temperature capability provides additional operational margin and does not create compatibility constraints.

Q: Are there packaging differences between the two components?

A: The primary packaging difference is the supply format. The L1008Q3R3MDMIT is supplied in Cut Tape (CT) & Digi-Reel format, while the MLP2520H3R3MT0S1 is supplied in Tape & Reel (TR) format. Both formats are standard for surface mount components and do not affect component performance or PCB assembly compatibility.

Q: What compliance certifications apply to the substitute part?

A: The MLP2520H3R3MT0S1 maintains ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the original component. Both parts carry EAR99 ECCN classification.

Q: Is the inductance tolerance identical between the two parts?

A: Yes. Both the L1008Q3R3MDMIT and MLP2520H3R3MT0S1 carry ±20% inductance tolerance specifications.