ELJ-FCR33MF Equivalent & Substitute Parts

Part Overview

The ELJ-FCR33MF is a 330 nH 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 substitute parts necessary for new designs and ongoing production support. The part is packaged in 1008 (2520 Metric) surface mount format with unlimited moisture sensitivity rating.

Substiute Parts

ELJ-FCR33MF

Panasonic Electronic ComponentsIn Stock: 1166ELJ-FCR33MF Datasheet

Current PartRFQ

NLCV25T-R33M-EFR

TDK CorporationIn Stock: 2730NLCV25T-R33M-EFR Datasheet

DirectRFQ

NLCV25T-R33M-PFR

TDK CorporationIn Stock: 3924NLCV25T-R33M-PFR Datasheet

DirectRFQ

NLV25T-R33J-PF

TDK CorporationIn Stock: 6179NLV25T-R33J-PF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELJ-FCR33MF is determined by the following mandatory parameters:

• Inductance Value: 330 nH (exact match required)
• Package / Case: 1008 (2520 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Shielding: Unshielded (exact match required)

The substitute parts listed below meet these core electrical and mechanical requirements. Variations in current rating, DC resistance, tolerance, and operating temperature are permitted within the scope of component substitution, provided the application circuit can accommodate these differences.

Parameter Comparison

Engineering Selection Recommendations

NLCV25T-R33M-EFR (TDK) is the primary substitute for new designs. This part carries Active product status, ROHS3 compliance, and REACH unaffected designation. It provides superior current handling (1.48 A versus 170 mA) and significantly lower DC resistance (78mOhm versus 850mOhm), making it suitable for applications requiring improved thermal performance and reduced power dissipation.

NLCV25T-R33M-PFR (TDK) is functionally equivalent to NLCV25T-R33M-EFR with identical electrical specifications but carries Not For New Designs status. This part supports extended operating temperature range (-40°C ~ 125°C) and is suitable only for legacy system maintenance or replacement scenarios where design changes are not feasible.

NLV25T-R33J-PF (TDK) offers tighter inductance tolerance (±5% versus ±20%) and higher Q factor (30 @ 25.2MHz versus 25 @ 25.2MHz). Current rating of 400 mA falls between the original part and the NLCV series. This part carries Not For New Designs status and REACH Affected designation, limiting its use to existing production support only.

Frequently Asked Questions (FAQ)

Q: Can NLCV25T-R33M-EFR directly replace ELJ-FCR33MF in existing designs?

A: Yes, for applications where the circuit can accommodate higher current rating (1.48 A) and lower DC resistance (78mOhm). The identical inductance value, package, and unshielded configuration ensure mechanical and electrical compatibility. Verify that the reduced DCR does not alter circuit behavior in current-limiting or impedance-matching applications.

Q: What is the difference between NLCV25T-R33M-EFR and NLCV25T-R33M-PFR?

A: Both parts have identical electrical specifications (330 nH, 1.48 A, 78mOhm DCR). NLCV25T-R33M-EFR is Active status suitable for new designs, while NLCV25T-R33M-PFR is Not For New Designs with extended temperature range (-40°C ~ 125°C versus -40°C ~ 105°C). Select NLCV25T-R33M-EFR for new production.

Q: Why does NLV25T-R33J-PF have lower current rating than other substitutes?

A: NLV25T-R33J-PF is from a different TDK series (NLV-PF) optimized for tighter tolerance (±5%) and higher Q factor performance. The 400 mA rating is still 2.35 times higher than the original ELJ-FCR33MF (170 mA), making it suitable for applications requiring improved inductance accuracy over maximum current capacity.

Q: Are all substitute parts RoHS compliant?

A: Yes. NLCV25T-R33M-EFR, NLCV25T-R33M-PFR, and NLV25T-R33J-PF all carry ROHS3 Compliant designation. The original ELJ-FCR33MF RoHS status is not specified in the provided data.

Q: Can I use NLV25T-R33J-PF for new designs?

A: No. NLV25T-R33J-PF carries Not For New Designs status and is restricted to legacy system support only. Use NLCV25T-R33M-EFR for new production.

Q: What is the impact of different DC resistance values on circuit performance?

A: Lower DC resistance reduces I²R power dissipation and heat generation. NLCV series parts (78mOhm) dissipate significantly less power than the original ELJ-FCR33MF (850mOhm). In high-frequency or high-current applications, this improves thermal stability. In circuits relying on series resistance for current limiting, lower DCR may require circuit adjustment.