MLF1005LR12K Equivalent & Substitute Parts

Part Overview

The MLF1005LR12K is a 120 nH shielded multilayer inductor manufactured by TDK Corporation in the 0402 (1005 Metric) surface mount package. This component is rated for 140 mA maximum current with a DC resistance of 590 mOhm maximum and operates across the temperature range of -40°C to 85°C. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

MLF1005LR12K

TDK CorporationIn Stock: 2469MLF1005LR12K Datasheet

Current PartRFQ

MLF1005VR12KT000

TDK CorporationIn Stock: 8730MLF1005VR12KT000 Datasheet

DirectRFQ

MLF1005VR12KT

TDK CorporationIn Stock: 1103MLF1005VR12KT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MLF1005LR12K are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Inductance value: 120 nH (exact match required)
• Inductance tolerance: ±10% (exact match required)
• Package / Case: 0402 (1005 Metric) (exact match required)
• DC Resistance: 590 mOhm Max (exact match required)
• Shielding: Shielded (exact match required)
• Material - Core: Ferrite (exact match required)
• Mounting Type: Surface Mount (exact match required)

The identified substitutes MLF1005VR12KT000 and MLF1005VR12KT meet all mandatory electrical and mechanical parameters. Both parts are manufactured by TDK Corporation in the same MLF series and maintain identical inductance, tolerance, package dimensions, and DC resistance specifications. The primary distinction between these substitutes and the original part is the increased current rating (180 mA versus 140 mA) and expanded operating temperature range in the MFR recommended variant.

Parameter Comparison

Engineering Selection Recommendations

Both MLF1005VR12KT000 and MLF1005VR12KT are active production parts from TDK Corporation and maintain full compliance with ROHS3 and REACH requirements. The MLF1005VR12KT is the manufacturer-recommended substitute, offering 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 design margin for applications requiring broader thermal performance.

The increased current rating of 180 mA in both substitute parts exceeds the original 140 mA specification, ensuring compatibility with circuits designed for the MLF1005LR12K while providing additional current capacity headroom. All three parts maintain identical inductance, tolerance, DC resistance, and package dimensions, ensuring direct mechanical and electrical interchangeability in PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can MLF1005VR12KT000 or MLF1005VR12KT be used as direct replacements for MLF1005LR12K?

A: Yes. Both substitute parts maintain identical inductance (120 nH), tolerance (±10%), DC resistance (590 mOhm Max), shielding characteristics, and 0402 (1005 Metric) package dimensions. The increased current rating and identical electrical parameters ensure functional compatibility.

Q: What is the difference between MLF1005VR12KT000 and MLF1005VR12KT?

A: Both parts are electrically and mechanically identical. MLF1005VR12KT is the manufacturer-recommended variant with an extended operating temperature range of -55°C to 125°C, compared to -40°C to 85°C for MLF1005VR12KT000. Selection depends on application temperature requirements.

Q: Are there packaging differences between the main part and substitutes?

A: The MLF1005LR12K is supplied in Cut Tape (CT) & Digi-Reel® packaging, while both substitutes are supplied in Tape & Reel (TR) format. Component specifications and PCB footprints remain identical; packaging differences affect only procurement and handling logistics.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. Compliance certifications are equivalent across all variants.

Q: Why is the current rating higher on the substitute parts?

A: The MLF1005VR12KT and MLF1005VR12KT000 are rated for 180 mA compared to the original 140 mA. This higher rating does not affect substitution compatibility; circuits designed for 140 mA operation remain fully functional with the higher-rated substitutes.