ELJ-PC3R3MF Equivalent & Substitute Parts

Part Overview

The ELJ-PC3R3MF is a 3.3 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 340 mA with a maximum DC resistance of 850mOhm. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part is housed in a 1008 (2520 Metric) surface mount package and operates across a temperature range of -20°C to 85°C.

Key Parameters

Parameter	Value
Inductance	3.3 µH
Tolerance	±20%
Current Rating	340 mA
DC Resistance (DCR)	850mOhm Max
Shielding	Unshielded
Package / Case	1008 (2520 Metric)
Mounting Type	Surface Mount
Operating Temperature	-20°C ~ 85°C
Frequency - Self Resonant	55MHz

Substitute Part Grouping Explanation

Substitution for the ELJ-PC3R3MF is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

Inductance value: 3.3 µH (exact match required)
Package / Case: 1008 (2520 Metric) (exact match required)
Mounting Type: Surface Mount (exact match required)
Self Resonant Frequency: 55MHz (exact match required)

Secondary Compatibility Parameters:

Current Rating: 340 mA minimum
DC Resistance: Acceptable within component design specifications
Operating Temperature Range: Must support application requirements
Shielding: Unshielded (consistent with original design)

The substitute parts listed below meet the primary criteria. Variations in current rating, DC resistance, and operating temperature reflect different manufacturer designs while maintaining functional equivalence for the specified inductance and package requirements.

Parameter Comparison

Parameter	ELJ-PC3R3MF (Panasonic)	NLCV25T-3R3M-EF (TDK)	CW252016-3R3J (Bourns)	NLV25T-3R3J-PF (TDK)
Inductance	3.3 µH	3.3 µH	3.3 µH	3.3 µH
Tolerance	±20%	±20%	±5%	±5%
Current Rating (Amps)	340 mA	340 mA	185 mA	185 mA
DC Resistance (DCR)	850mOhm Max	845mOhm Max	3.4Ohm Max	1.9Ohm Max
Shielding	Unshielded	Unshielded	Unshielded	Unshielded
Package / Case	1008 (2520 Metric)	1008 (2520 Metric)	1008 (2520 Metric)	1008 (2520 Metric)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	-20°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 125°C	-40°C ~ 105°C
Frequency - Self Resonant	55MHz	55MHz	55MHz	55MHz
Product Status	Obsolete	Active	Active	Not For New Designs
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

NLCV25T-3R3M-EF (TDK Corporation) is the primary direct substitute. This part maintains the 340 mA current rating and 845mOhm maximum DC resistance, providing electrical performance equivalent to the ELJ-PC3R3MF. The NLCV25T-3R3M-EF is active in production, ROHS3 compliant, and supports an extended operating temperature range of -40°C to 105°C. This part is suitable for new designs and ongoing production applications.

CW252016-3R3J (Bourns Inc.) and NLV25T-3R3J-PF (TDK Corporation) are functional alternatives for applications where current requirements do not exceed 185 mA. Both parts are active in production and ROHS3 compliant. The CW252016-3R3J supports the widest operating temperature range (-40°C to 125°C). The NLV25T-3R3J-PF is classified as "Not For New Designs" and should be used only for legacy system maintenance or replacement applications.

Selection between these alternatives depends on application current requirements and production status constraints.

Frequently Asked Questions (FAQ)

Q: Can NLCV25T-3R3M-EF directly replace ELJ-PC3R3MF without circuit modification?

A: Yes. Both parts share identical inductance (3.3 µH), tolerance (±20%), current rating (340 mA), package (1008 / 2520 Metric), and self-resonant frequency (55MHz). DC resistance values are within acceptable engineering tolerance (845mOhm vs. 850mOhm maximum). No circuit modification is required.

Q: Why do CW252016-3R3J and NLV25T-3R3J-PF have lower current ratings?

A: These parts are designed with different core materials and winding configurations, resulting in lower saturation current (185 mA) compared to the original 340 mA rating. They are suitable only for applications where circuit current does not exceed 185 mA.

Q: Are all substitute parts available in the same package?

A: Yes. All listed substitute parts use the 1008 (2520 Metric) surface mount package with identical footprint dimensions (0.098" L x 0.079" W / 2.50mm x 2.00mm). Height variations are minimal (0.071" to 0.075" seated height) and do not affect PCB assembly compatibility.

Q: Which substitute part is recommended for new product designs?

A: NLCV25T-3R3M-EF is the recommended choice for new designs. It is active in production, ROHS3 compliant, and maintains full electrical equivalence to the original part. CW252016-3R3J is also suitable for new designs but only if application current requirements are confirmed below 185 mA.

Q: What is the difference in DC resistance between these parts?

A: The ELJ-PC3R3MF and NLCV25T-3R3M-EF have comparable DCR values (850mOhm and 845mOhm maximum, respectively). The CW252016-3R3J and NLV25T-3R3J-PF have significantly higher DCR values (3.4Ohm and 1.9Ohm maximum) due to different core designs. Higher DCR increases power dissipation and heat generation; verify application thermal requirements before substitution.

Q: Are moisture sensitivity levels equivalent across all parts?

A: Yes. All parts, including the original ELJ-PC3R3MF and all substitutes, have Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

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