MLF1005LR39K Equivalent & Substitute Parts

Part Overview

The MLF1005LR39K is a 390 nH shielded multilayer inductor manufactured by TDK Corporation, designed for surface mount applications in the 0402 (1005 Metric) package. This component delivers 50 mA current rating with a maximum DC resistance of 410 mOhm and operates across the temperature range of -40°C to 85°C. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications.

Substiute Parts

MLF1005LR39K

TDK CorporationIn Stock: 5201MLF1005LR39K Datasheet

Current PartRFQ

MLF1005GR39KT000

TDK CorporationIn Stock: 1017MLF1005GR39KT000 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MLF1005LR39K is determined by strict equivalence across the following critical parameters:

• Inductance value: 390 nH with ±10% tolerance
• Current rating: 50 mA minimum
• DC resistance: 410 mOhm maximum
• Package / Case: 0402 (1005 Metric)
• Mounting type: Surface Mount
• Core material: Ferrite
• Shielding: Shielded configuration
• Regulatory compliance: ROHS3 Compliant

The MLF1005GR39KT000 meets all electrical and mechanical specifications required for direct substitution. The primary distinction between the main part and its substitute is the packaging format and product status classification.

Parameter Comparison

Engineering Selection Recommendations

The MLF1005GR39KT000 is the direct equivalent substitute for the obsolete MLF1005LR39K. Both components are manufactured by TDK Corporation and share identical electrical specifications and mechanical dimensions. The substitute part carries Active product status, ensuring continued availability and supply chain reliability.

The MLF1005GR39KT000 features an extended operating temperature range of -55°C to 125°C compared to the original part's -40°C to 85°C specification. This extended range provides additional thermal margin for applications operating at temperature extremes. Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings.

The primary operational difference is packaging format: the original part is supplied in Cut Tape (CT) & Digi-Reel® format, while the substitute is supplied in standard Tape & Reel (TR) format. This distinction affects procurement and assembly processes but does not impact component performance or electrical characteristics.

Frequently Asked Questions (FAQ)

Q: Are the MLF1005LR39K and MLF1005GR39KT000 electrically identical?

A: Yes. Both components deliver 390 nH inductance with ±10% tolerance, 50 mA current rating, and 410 mOhm maximum DC resistance. Electrical performance is equivalent across all specified parameters.

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

A: Cut Tape packaging is supplied in shorter lengths suitable for manual or small-volume assembly, while Tape & Reel format provides continuous reel packaging optimized for automated pick-and-place assembly. Both formats contain the same component; the difference is in supply configuration and handling.

Q: Can the MLF1005GR39KT000 be used in applications designed for the MLF1005LR39K?

A: Yes. The substitute part meets or exceeds all electrical and mechanical specifications. The extended operating temperature range (-55°C to 125°C versus -40°C to 85°C) provides additional thermal capability without compromising compatibility.

Q: Are both parts RoHS compliant?

A: Yes. Both the MLF1005LR39K and MLF1005GR39KT000 are ROHS3 compliant and carry identical moisture sensitivity ratings (MSL 1 - Unlimited).

Q: Why is the original part classified as obsolete?

A: The MLF1005LR39K is no longer in active production. The MLF1005GR39KT000 represents the current production equivalent and is recommended for all new designs and ongoing procurement.