MLF2012K390MT Equivalent & Substitute Parts

Part Overview

The MLF2012K390MT is a 39 µH shielded multilayer inductor manufactured by TDK Corporation in the 0805 (2012 Metric) surface mount package. This component is rated for 4 mA maximum current with a DC resistance of 2.4Ohm maximum and operates across the temperature range of -55°C to 125°C. The part carries a "Not For New Designs" product status, indicating it has been superseded in TDK's current product portfolio. Identifying equivalent substitute parts is necessary for ongoing production support, maintenance applications, and design continuity where this inductor specification is required.

Substiute Parts

MLF2012K390MT

TDK CorporationIn Stock: 1086MLF2012K390MT Datasheet

Current PartRFQ

MLF2012K390KT000

TDK CorporationIn Stock: 25864MLF2012K390KT000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MLF2012K390MT is determined by strict alignment of the following critical parameters:

• Inductance value: 39 µH (exact match required)
• Current rating: 4 mA minimum
• DC resistance: 2.4Ohm maximum
• Package: 0805 (2012 Metric) surface mount
• Core material: Ferrite shielded construction
• Q factor and self-resonant frequency characteristics

The MLF2012K390KT000 qualifies as a direct substitute based on these parameters. Both parts share identical inductance, current rating, DC resistance, package dimensions, and core material specifications. Differences in tolerance and operating temperature range do not preclude substitution when the application requirements fall within the substitute part's specifications.

Parameter Comparison

Engineering Selection Recommendations

The MLF2012K390KT000 is the active equivalent for the MLF2012K390MT. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The substitute part carries an active product status, providing assured long-term availability compared to the obsolete MLF2012K390MT designation.

The MLF2012K390KT000 features improved tolerance specification (±10% versus ±20%), which may provide enhanced performance stability in precision applications. The operating temperature range of the substitute (-40°C to 85°C) is narrower than the original part (-55°C to 125°C); verification that application requirements fall within this range is necessary before implementation.

Identical electrical characteristics, package dimensions, and core material ensure direct PCB compatibility and functional equivalence in existing designs.

Frequently Asked Questions (FAQ)

Q: Can MLF2012K390KT000 replace MLF2012K390MT in existing designs?

A: Yes, provided the application operating temperature range does not exceed -40°C to 85°C. All electrical parameters, package dimensions, and mounting characteristics are identical.

Q: What is the primary difference between these two parts?

A: The MLF2012K390KT000 has tighter inductance tolerance (±10% versus ±20%) and a narrower operating temperature range (-40°C to 85°C versus -55°C to 125°C). The MLF2012K390MT is marked "Not For New Designs" while MLF2012K390KT000 is active.

Q: Are the package dimensions identical?

A: Yes. Both parts use the 0805 (2012 Metric) surface mount package with identical dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.057" (1.45mm).

Q: Do both parts meet RoHS and REACH requirements?

A: Yes. Both MLF2012K390MT and MLF2012K390KT000 are ROHS3 compliant and REACH unaffected.

Q: What is the moisture sensitivity level for these inductors?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.