MLF1005LR33K Equivalent & Substitute Parts

Part Overview

The MLF1005LR33K is a 330 nH shielded multilayer inductor manufactured by TDK Corporation, designed for surface mount applications in the 0402 (1005 Metric) package. This component is rated for 90 mA maximum current with a DC resistance of 1.05 Ohm maximum and operates across the temperature range of -40°C to 85°C. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Inductance	330 nH
Inductance Tolerance	±10%
Current Rating	90 mA
DC Resistance (DCR)	1.05 Ohm Max
Shielding	Shielded
Package / Case	0402 (1005 Metric)
Operating Temperature Range	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MLF1005LR33K is determined by the following critical parameters:

Inductance Value and Tolerance: The substitute part must maintain the 330 nH inductance specification with ±10% tolerance to ensure circuit performance and frequency response characteristics remain within design specifications.

Package and Form Factor: The 0402 (1005 Metric) surface mount package is mandatory for mechanical and electrical compatibility with existing PCB layouts and assembly processes.

Shielding Configuration: Shielded construction is required to maintain electromagnetic isolation and prevent interference in the target application.

DC Resistance: The 1.05 Ohm maximum DC resistance specification must be met to ensure power dissipation and thermal performance remain within acceptable limits.

Operating Temperature Range: The -40°C to 85°C operating temperature range establishes the environmental compatibility requirements for the substitute component.

Compliance Standards: RoHS3 compliance is mandatory for regulatory and supply chain continuity.

The MLF1005VR33KT000 qualifies as a direct substitute based on matching all critical parameters while offering improved current rating capability and active product status.

Parameter Comparison

Parameter	MLF1005LR33K (Main Part)	MLF1005VR33KT000 (Substitute)
Manufacturer	TDK Corporation	TDK Corporation
Series	MLF	MLF
Inductance	330 nH	330 nH
Inductance Tolerance	±10%	±10%
Current Rating (Amps)	90 mA	140 mA
DC Resistance (DCR)	1.05 Ohm Max	1.05 Ohm Max
Shielding	Shielded	Shielded
Q @ Freq	10 @ 25MHz	15 @ 25MHz
Frequency - Self Resonant	230 MHz	230 MHz
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Inductance Frequency - Test	25 MHz	25 MHz
Package / Case	0402 (1005 Metric)	0402 (1005 Metric)
Size / Dimension	0.039" L x 0.020" W (1.00mm x 0.50mm)	0.039" L x 0.020" W (1.00mm x 0.50mm)
Height - Seated (Max)	0.022" (0.55mm)	0.022" (0.55mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Obsolete	Active

Engineering Selection Recommendations

The MLF1005VR33KT000 is the qualified substitute for the obsolete MLF1005LR33K. Both components are manufactured by TDK Corporation within the MLF series and maintain identical electrical and mechanical specifications for inductance, tolerance, DC resistance, shielding, operating temperature range, and package form factor.

The substitute part offers enhanced current rating capability (140 mA versus 90 mA) and improved Q factor (15 @ 25MHz versus 10 @ 25MHz), providing superior performance margins without compromising compatibility. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity.

The transition from MLF1005LR33K to MLF1005VR33KT000 is supported by identical mechanical dimensions and electrical performance at the specified operating conditions, enabling direct substitution in existing designs without PCB layout modifications or circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can MLF1005VR33KT000 be used as a direct replacement for MLF1005LR33K?

A: Yes. Both components share identical inductance (330 nH), tolerance (±10%), DC resistance (1.05 Ohm max), shielding configuration, operating temperature range (-40°C to 85°C), and 0402 (1005 Metric) package dimensions. The substitute part is mechanically and electrically compatible for direct substitution.

Q: What are the differences between these two parts?

A: The primary differences are product status and performance characteristics. MLF1005VR33KT000 is an active product with higher current rating (140 mA versus 90 mA) and improved Q factor (15 @ 25MHz versus 10 @ 25MHz). The obsolete MLF1005LR33K is no longer in production.

Q: Are there packaging differences between these parts?

A: The MLF1005LR33K is supplied in Cut Tape (CT) & Digi-Reel packaging, while MLF1005VR33KT000 is supplied in Tape & Reel (TR) format. Both use identical 0402 (1005 Metric) component packages with matching physical dimensions (0.039" L x 0.020" W, 0.022" max height).

Q: Do both parts meet the same compliance requirements?

A: Yes. Both MLF1005LR33K and MLF1005VR33KT000 are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8504.50.8000. Moisture sensitivity level is 1 (Unlimited) for both components.

Q: What is the inductance frequency test specification?

A: Both components are tested at 25 MHz for inductance verification, with a self-resonant frequency of 230 MHz.

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