ELJ-NA56NMF Equivalent & Substitute Parts

Part Overview

The ELJ-NA56NMF is a 56 nH unshielded wirewound inductor manufactured by Panasonic Electronic Components in the 1210 (3225 Metric) surface mount package. This part is classified as obsolete, making equivalent and substitute components necessary for ongoing design support and production continuity. The inductor is rated for 420 mA maximum current with 220 mOhm maximum DC resistance and operates at 100 MHz test frequency with a self-resonant frequency of 600 MHz.

Substiute Parts

ELJ-NA56NMF

Panasonic Electronic ComponentsIn Stock: 921ELJ-NA56NMF Datasheet

Current PartRFQ

IMC1210EB56NM

Vishay DaleIn Stock: 1050IMC1210EB56NM Datasheet

DirectRFQ

IMC1210ER56NK

Vishay DaleIn Stock: 708IMC1210ER56NK Datasheet

DirectRFQ

IMC1210ER56NM

Vishay DaleIn Stock: 1059IMC1210ER56NM Datasheet

DirectRFQ

IMC1210SY56NM

Vishay DaleIn Stock: 939IMC1210SY56NM Datasheet

DirectRFQ

B82422T3560J000

EPCOS - TDK ElectronicsIn Stock: 702B82422T3560J000 Datasheet

SimilarRFQ

B82422T3560K000

EPCOS - TDK ElectronicsIn Stock: 819B82422T3560K000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELJ-NA56NMF is determined by the following critical parameters:

• Inductance Value: 56 nH (exact match required)
• Package / Case: 1210 (3225 Metric) (exact match required for PCB compatibility)
• Mounting Type: Surface Mount (exact match required)
• Shielding: Unshielded (exact match required)
• Current Rating: Minimum 420 mA (equal or higher acceptable)
• DC Resistance (DCR): Maximum 220 mOhm (equal or lower acceptable)
• Tolerance: ±20% or tighter acceptable

Substitute parts are grouped into two categories:

Direct Substitutes (Vishay Dale IMC-1210 Series): Parts IMC1210EB56NM, IMC1210ER56NK, IMC1210ER56NM, and IMC1210SY56NM meet all critical parameters with identical inductance, package, and mounting specifications. These parts exceed the current rating (470 mA) and maintain equivalent or superior DC resistance characteristics (330 mOhm Max).

Similar Substitutes (EPCOS - TDK Electronics SIMID Series): Parts B82422T3560J000 and B82422T3560K000 share the same inductance value and package footprint but employ a drum core ceramic construction instead of non-magnetic wirewound. These parts offer lower DC resistance (210 mOhm Max) and higher current rating (450 mA) with AEC-Q200 automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): Select from the Vishay Dale IMC-1210 series (IMC1210EB56NM, IMC1210ER56NK, IMC1210ER56NM, or IMC1210SY56NM). These parts maintain identical package geometry, inductance value, and wirewound non-magnetic core construction. All are active products with ROHS3 compliance except IMC1210SY56NM, which is RoHS non-compliant. IMC1210ER56NK offers the tightest tolerance (±10%) if inductance precision is critical. IMC1210EB56NM is available in bulk packaging for high-volume applications.

For Applications Requiring Lower DC Resistance: Select B82422T3560J000 or B82422T3560K000 from the EPCOS - TDK Electronics SIMID series. These parts provide superior DC resistance (210 mOhm Max versus 220 mOhm Max) and higher current rating (450 mA). Both are AEC-Q200 qualified for automotive applications and ROHS3 compliant. B82422T3560K000 offers ±10% tolerance compared to ±5% for B82422T3560J000.

Compliance Considerations: All recommended substitutes except IMC1210SY56NM are ROHS3 compliant. For applications requiring automotive qualification, B82422T3560J000 and B82422T3560K000 carry AEC-Q200 ratings. All parts maintain MSL 1 (Unlimited) moisture sensitivity classification.

Frequently Asked Questions (FAQ)

Q: Can IMC1210EB56NM, IMC1210ER56NK, IMC1210ER56NM, and IMC1210SY56NM be used interchangeably with ELJ-NA56NMF?

A: Yes, these Vishay Dale parts are direct substitutes. All share identical inductance (56 nH), package (1210 / 3225 Metric), mounting type (surface mount), and core material (non-magnetic wirewound). The higher current ratings (470 mA versus 420 mA) and equivalent or superior DC resistance characteristics ensure functional compatibility. Tolerance differences (±10% or ±20%) should be evaluated against circuit requirements.

Q: What is the difference between the Vishay Dale IMC-1210 series and the EPCOS - TDK Electronics SIMID series substitutes?

A: The primary difference is core construction. Vishay Dale IMC-1210 parts use non-magnetic wirewound cores identical to the original ELJ-NA56NMF, while EPCOS - TDK Electronics SIMID parts employ ceramic drum core construction. Both achieve 56 nH inductance and 1210 package compatibility. EPCOS - TDK parts offer lower DC resistance (210 mOhm Max) and higher self-resonant frequency (1.1 GHz versus 1 GHz), with AEC-Q200 automotive qualification.

Q: Are there packaging differences between substitute parts?

A: Vishay Dale IMC-1210 series parts are available in bulk (IMC1210EB56NM) or tape & reel (IMC1210ER56NK, IMC1210ER56NM, IMC1210SY56NM) packaging. EPCOS - TDK Electronics SIMID series parts (B82422T3560J000, B82422T3560K000) are supplied in tape & reel packaging. All maintain identical 1210 (3225 Metric) footprint for PCB assembly.

Q: Which substitute offers the best tolerance specification?

A: B82422T3560J000 from EPCOS - TDK Electronics provides the tightest tolerance at ±5%. IMC1210ER56NK offers ±10% tolerance. The remaining substitutes (IMC1210EB56NM, IMC1210ER56NM, IMC1210SY56NM, B82422T3560K000) are specified at ±20% or ±10%. Tolerance selection depends on circuit inductance sensitivity requirements.

Q: Is IMC1210SY56NM suitable for new designs?

A: IMC1210SY56NM is functionally equivalent but is RoHS non-compliant and REACH affected. For new designs subject to environmental regulations, ROHS3-compliant alternatives (IMC1210EB56NM, IMC1210ER56NK, IMC1210ER56NM, B82422T3560J000, B82422T3560K000) are recommended.

Q: What is the current rating margin when substituting with higher-rated parts?

A: Vishay Dale IMC-1210 series parts are rated for 470 mA compared to the original 420 mA specification, providing a 50 mA margin. EPCOS - TDK Electronics SIMID series parts are rated for 450 mA, providing a 30 mA margin. Both exceed the original current requirement and are suitable for direct substitution.