ELJ-QF5N6DF Equivalent & Substitute Parts

Part Overview

The ELJ-QF5N6DF is a 5.6 nH unshielded multilayer ceramic inductor manufactured by Panasonic Electronic Components in the 0402 (1005 Metric) surface mount package. This component is rated for 340 mA maximum current with a DC resistance of 190mOhm maximum and operates across the temperature range of -40°C to 85°C. The product is currently obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

ELJ-QF5N6DF

Panasonic Electronic ComponentsIn Stock: 1040ELJ-QF5N6DF Datasheet

Current PartRFQ

MLG1005S5N6STD25

TDK CorporationIn Stock: 17813MLG1005S5N6STD25 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELJ-QF5N6DF is determined by the following critical parameters:

• Inductance Value: Must be 5.6 nH with tolerance ±0.3nH
• Package / Case: Must be 0402 (1005 Metric) for mechanical and electrical compatibility
• Shielding Type: Must be unshielded to maintain equivalent electromagnetic characteristics
• Core Material: Must be ceramic to preserve frequency response and Q factor behavior
• Mounting Type: Must be surface mount for PCB assembly compatibility

The substitute part MLG1005S5N6STD25 meets all these critical parameters. While the substitute exhibits higher current rating (600 mA vs 340 mA) and lower maximum DC resistance (250mOhm vs 190mOhm), these represent improved electrical performance characteristics that do not compromise compatibility in applications designed for the original part.

Parameter Comparison

Engineering Selection Recommendations

The MLG1005S5N6STD25 from TDK Corporation is the primary substitute for the obsolete ELJ-QF5N6DF. This substitution is supported by:

• Identical Inductance and Tolerance: Both components specify 5.6 nH ±0.3nH, ensuring equivalent circuit performance
• Identical Package Geometry: Both use 0402 (1005 Metric) with matching physical dimensions and height, enabling direct PCB footprint compatibility
• Active Product Status: The TDK component is currently in active production with substantial inventory availability (17,752 pcs), ensuring long-term supply continuity
• Regulatory Compliance: Both components share identical REACH and ECCN classifications, maintaining compliance requirements
• Enhanced Performance Margins: The substitute provides higher current rating (600 mA vs 340 mA) and extended operating temperature range (-55°C to 125°C vs -40°C to 85°C), offering improved design margins without compromising the original application requirements

Frequently Asked Questions (FAQ)

Q: Can MLG1005S5N6STD25 be used as a direct replacement for ELJ-QF5N6DF?

A: Yes. Both components share identical inductance values (5.6 nH ±0.3nH), package dimensions (0402 / 1005 Metric), and core material (ceramic unshielded). The substitute is mechanically and electrically compatible for direct PCB substitution.

Q: What are the differences between these two inductors?

A: The primary differences are current rating (600 mA vs 340 mA), DC resistance (250mOhm max vs 190mOhm max), Q factor (8 vs 10 @ 100MHz), self-resonant frequency (4GHz vs 4.6GHz), and operating temperature range (-55°C to 125°C vs -40°C to 85°C). The substitute offers higher current capacity and wider temperature range.

Q: Does the higher DC resistance of the substitute affect circuit performance?

A: The 60mOhm difference in maximum DC resistance (250mOhm vs 190mOhm) represents a 31.6% increase. Circuit impact depends on application-specific current levels and thermal requirements. Applications operating below 340 mA will experience minimal performance change.

Q: Are there packaging differences between these components?

A: Both components use identical 0402 (1005 Metric) surface mount packaging with matching physical dimensions (1.00mm L x 0.50mm W) and maximum seated height (0.55mm). The ELJ-QF5N6DF is supplied in standard packaging, while MLG1005S5N6STD25 is supplied in Tape & Reel format.

Q: What is the inventory status for the substitute part?

A: MLG1005S5N6STD25 is currently in active production with 17,752 pieces available in new original stock, providing reliable supply availability compared to the obsolete ELJ-QF5N6DF.