ELJ-RF1N0DFB Equivalent & Substitute Parts

Part Overview

The ELJ-RF1N0DFB is a 1 nH unshielded multilayer inductor manufactured by Panasonic Electronic Components in the 0402 (1005 Metric) surface mount package. This component is rated for 400 mA maximum current with 50 mOhm maximum DC resistance and operates across -20°C to 85°C. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing design support and procurement.

Substiute Parts

ELJ-RF1N0DFB

Panasonic Electronic ComponentsIn Stock: 9473ELJ-RF1N0DFB Datasheet

Current PartRFQ

MLG1005S1N0ST000

TDK CorporationIn Stock: 10139MLG1005S1N0ST000 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELJ-RF1N0DFB is determined by strict equivalence across the following critical parameters:

• Inductance value: 1 nH with ±0.3 nH tolerance
• Package / Case: 0402 (1005 Metric) surface mount
• Mounting Type: Surface Mount
• Type: Multilayer
• Material - Core: Non-Magnetic
• Shielding: Unshielded

The substitute part MLG1005S1N0ST000 meets all these core requirements. Additional parameters including current rating, DC resistance, operating temperature range, and frequency characteristics must be evaluated for circuit-level compatibility based on application requirements.

Parameter Comparison

Engineering Selection Recommendations

The MLG1005S1N0ST000 from TDK Corporation serves as a direct substitute for the obsolete ELJ-RF1N0DFB. Both components share identical inductance values, tolerances, package dimensions, and mounting specifications. The TDK part offers superior performance characteristics in several areas: higher current rating (1 A versus 400 mA), extended operating temperature range (-55°C to 125°C versus -20°C to 85°C), and higher self-resonant frequency (10 GHz versus 6 GHz).

The MLG1005S1N0ST000 carries active product status and is ROHS3 compliant, ensuring long-term availability and regulatory compliance. Both parts maintain identical moisture sensitivity levels and REACH compliance status. The substitute part is suitable for applications where the original ELJ-RF1N0DFB was specified, with the understanding that the higher DC resistance (100 mOhm maximum versus 50 mOhm maximum) must be evaluated for circuit performance impact.

Frequently Asked Questions (FAQ)

Q: Can MLG1005S1N0ST000 be used as a direct replacement for ELJ-RF1N0DFB?

A: Yes. Both components share identical inductance values (1 nH ±0.3 nH), package specifications (0402 / 1005 Metric), and core construction (unshielded multilayer). Physical and electrical compatibility is established across these critical parameters.

Q: What are the differences in current handling capability?

A: The ELJ-RF1N0DFB is rated for 400 mA maximum current, while the MLG1005S1N0ST000 is rated for 1 A. The substitute part provides higher current capacity, making it suitable for applications requiring the original part's current rating or lower.

Q: How does DC resistance affect substitution?

A: The ELJ-RF1N0DFB specifies 50 mOhm maximum DC resistance, while the MLG1005S1N0ST000 specifies 100 mOhm maximum. Applications sensitive to resistive losses must evaluate whether the higher DC resistance of the substitute part impacts circuit performance.

Q: Are there temperature range considerations?

A: The ELJ-RF1N0DFB operates from -20°C to 85°C, while the MLG1005S1N0ST000 operates from -55°C to 125°C. The substitute part supports a wider temperature range, providing greater operational flexibility for extended temperature applications.

Q: What is the packaging difference between the two parts?

A: Both parts use identical 0402 (1005 Metric) surface mount packaging with 0.039" length, 0.020" width, and 0.022" maximum seated height. No PCB layout modifications are required for substitution.

Q: Is the substitute part RoHS compliant?

A: Yes. The MLG1005S1N0ST000 is ROHS3 compliant. Both parts maintain REACH unaffected status and identical moisture sensitivity levels (MSL 1 - Unlimited).