ELJ-FC1R5KF Equivalent & Substitute Parts

Part Overview

The ELJ-FC1R5KF is a 1.5 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 170 mA maximum current with 850mOhm DC resistance. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing production support and design continuity. 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-FC1R5KF

Panasonic Electronic ComponentsIn Stock: 806ELJ-FC1R5KF Datasheet

Current PartRFQ

NLV25T-1R5J-PF

TDK CorporationIn Stock: 43266NLV25T-1R5J-PF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELJ-FC1R5KF is determined by the following critical parameters:

• Inductance Value: Must be 1.5 µH
• Package / Case: Must be 1008 (2520 Metric) surface mount
• Shielding Configuration: Must be unshielded
• Mounting Type: Must be surface mount
• Current Rating: Must meet or exceed 170 mA
• DC Resistance: Must not exceed 850mOhm
• Operating Temperature Range: Must encompass or exceed -20°C ~ 85°C

The NLV25T-1R5J-PF from TDK Corporation meets all substitution criteria. This part maintains identical inductance and package specifications while providing superior electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The NLV25T-1R5J-PF is a direct functional substitute for the obsolete ELJ-FC1R5KF. The TDK part exceeds the minimum electrical requirements across all critical parameters: current rating is 50 mA higher (220 mA vs. 170 mA), operating temperature range is extended (-40°C to 105°C vs. -20°C to 85°C), and inductance tolerance is tighter (±5% vs. ±10%).

The NLV25T-1R5J-PF carries ROHS3 compliance and REACH affected status, meeting modern regulatory requirements. The part is classified as "Not For New Designs" by TDK, indicating mature product status with established supply chains.

Note: The NLV25T-1R5J-PF exhibits higher DC resistance (1.3Ohm Max vs. 850mOhm Max). Applications sensitive to resistive losses should evaluate this parameter against circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can the NLV25T-1R5J-PF be used as a direct replacement for the ELJ-FC1R5KF?

A: Yes. Both parts share identical inductance (1.5 µH), package (1008 / 2520 Metric), and mounting type (surface mount). The NLV25T-1R5J-PF meets or exceeds all electrical specifications of the ELJ-FC1R5KF.

Q: What is the impact of the higher DC resistance in the NLV25T-1R5J-PF?

A: The NLV25T-1R5J-PF has 1.3Ohm maximum DC resistance compared to 850mOhm maximum in the ELJ-FC1R5KF. This difference affects power dissipation and thermal performance. Circuits operating at maximum current (170 mA) will experience increased resistive losses with the TDK part. Verify that thermal and power budget requirements are satisfied in your specific application.

Q: Are there physical dimension differences between these parts?

A: Both parts use the 1008 (2520 Metric) package with identical length and width (0.098" L x 0.079" W / 2.50mm x 2.00mm). Height differs slightly: ELJ-FC1R5KF is 0.071" (1.80mm) maximum, while NLV25T-1R5J-PF is 0.075" (1.90mm) maximum. This 0.004" difference is negligible for most PCB layouts.

Q: What certifications apply to the substitute part?

A: The NLV25T-1R5J-PF is ROHS3 compliant and REACH affected. Both parts carry EAR99 ECCN classification and 8504.50.8000 HTSUS code.

Q: Does the extended temperature range of the NLV25T-1R5J-PF provide additional design margin?

A: Yes. The NLV25T-1R5J-PF operates from -40°C to 105°C, compared to -20°C to 85°C for the ELJ-FC1R5KF. This extended range provides additional thermal margin for applications operating at temperature extremes.