ELJ-FC1R0KF Equivalent & Substitute Parts

Part Overview

The ELJ-FC1R0KF is a 1 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 195 mA maximum current with 650 mOhm DC resistance. This component is classified as obsolete, making substitute parts necessary for ongoing production and maintenance applications. The part is packaged in the 1008 (2520 Metric) surface mount form factor and operates across the -20°C to 85°C temperature range.

Substiute Parts

ELJ-FC1R0KF

Panasonic Electronic ComponentsIn Stock: 1109ELJ-FC1R0KF Datasheet

Current PartRFQ

NLV25T-1R0J-PF

TDK CorporationIn Stock: 171405NLV25T-1R0J-PF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELJ-FC1R0KF is determined by the following critical parameters:

• Inductance Value: Must be 1 µH (exact match required)
• Package / Case: Must be 1008 (2520 Metric) for mechanical and electrical compatibility
• Mounting Type: Must be Surface Mount
• Shielding Configuration: Must be Unshielded
• Current Rating: Must meet or exceed 195 mA
• DC Resistance: Must not exceed 650 mOhm to maintain circuit performance
• Operating Temperature Range: Must encompass or exceed -20°C ~ 85°C

The substitute part NLV25T-1R0J-PF meets all critical substitution criteria within the allowed parameter set.

Parameter Comparison

Engineering Selection Recommendations

The NLV25T-1R0J-PF is a valid substitute for the ELJ-FC1R0KF based on matching inductance value, package form factor, and mounting configuration. The substitute part provides improved current handling capacity (245 mA versus 195 mA) and an extended operating temperature range (-40°C ~ 105°C versus -20°C ~ 85°C).

The DC resistance of the substitute part is higher (1.1 Ohm Max versus 650 mOhm Max). This parameter difference must be evaluated within the specific circuit application to determine acceptability.

Both parts carry legacy product status designations. The main part is classified as Obsolete, while the substitute is designated Not For New Designs. For new design work, consultation with component suppliers for current production alternatives is advised.

The substitute part is RoHS3 Compliant and REACH Affected, providing regulatory compliance advantages over the main part.

Frequently Asked Questions (FAQ)

Q: Can NLV25T-1R0J-PF directly replace ELJ-FC1R0KF in existing designs?

A: Direct replacement is mechanically and electrically feasible based on matching inductance (1 µH), package (1008 / 2520 Metric), and mounting type (Surface Mount). The higher DC resistance of the substitute (1.1 Ohm Max versus 650 mOhm Max) must be verified as acceptable for the specific circuit application.

Q: What are the key differences between these parts?

A: The substitute part offers higher current rating (245 mA versus 195 mA), wider operating temperature range (-40°C ~ 105°C versus -20°C ~ 85°C), tighter inductance tolerance (±5% versus ±10%), and higher self-resonant frequency (245 MHz versus 115 MHz). The substitute has significantly higher DC resistance.

Q: Are both parts suitable for new designs?

A: Both parts carry legacy status designations. The main part is Obsolete; the substitute is Not For New Designs. Current production alternatives should be sourced for new design implementations.

Q: Does the package form factor remain identical?

A: Yes. Both parts use the 1008 (2520 Metric) surface mount package with matching physical dimensions (0.098" L x 0.079" W / 2.50mm x 2.00mm) and compatible height specifications.

Q: What compliance certifications apply to the substitute part?

A: The NLV25T-1R0J-PF is RoHS3 Compliant and REACH Affected, providing regulatory compliance advantages for applications requiring these certifications.