ELJ-PC2R2MF Equivalent & Substitute Parts

Part Overview

The ELJ-PC2R2MF is a 2.2 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 390 mA with a maximum DC resistance of 650mOhm. This component is classified as obsolete, making substitute parts necessary for new procurement and ongoing system support. The part is housed in a 1008 (2520 Metric) surface mount package suitable for high-frequency applications up to 65 MHz self-resonant frequency.

Key Parameters

Parameter	Value
Inductance	2.2 µH
Current Rating	390 mA
DC Resistance (DCR)	650mOhm Max
Tolerance	±20%
Package / Case	1008 (2520 Metric)
Mounting Type	Surface Mount
Operating Temperature	-20°C ~ 85°C
Shielding	Unshielded
Q @ Frequency	10 @ 7.96MHz
Frequency - Self Resonant	65MHz

Substitute Part Grouping Explanation

Substitution for the ELJ-PC2R2MF is determined by the following critical parameters:

Inductance Value: Must be 2.2 µH
Package / Case: Must be 1008 (2520 Metric) surface mount
Mounting Type: Surface mount compatibility required
Physical Dimensions: 0.098" L x 0.079" W (2.50mm x 2.00mm)

Secondary considerations include current rating, DC resistance, operating temperature range, and product status. Substitute parts may have different tolerance specifications, core materials, and DCR values provided they maintain the same inductance value and package footprint.

Parameter Comparison

Parameter	ELJ-PC2R2MF (Panasonic)	CW252016-2R2G (Bourns)	CW252016-2R2J (Bourns)	NLV25T-2R2J-PF (TDK)
Inductance	2.2 µH	2.2 µH	2.2 µH	2.2 µH
Tolerance	±20%	±2%	±5%	±5%
Current Rating (Amps)	390 mA	250 mA	250 mA	200 mA
DC Resistance (DCR)	650mOhm Max	2.8Ohm Max	2.8Ohm Max	1.55Ohm Max
Q @ Frequency	10 @ 7.96MHz	25 @ 7.9MHz	25 @ 7.9MHz	30 @ 7.96MHz
Frequency - Self Resonant	65MHz	160MHz	160MHz	105MHz
Operating Temperature	-20°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 105°C
Package / Case	1008 (2520 Metric)	1008 (2520 Metric)	1008 (2520 Metric)	1008 (2520 Metric)
Type	Wirewound	Drum Core, Wirewound	Drum Core, Wirewound	Drum Core, Wirewound
Shielding	Unshielded	Unshielded	Unshielded	Unshielded
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Not For New Designs
RoHS Status	-	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

CW252016-2R2J (Bourns Inc.) is the primary substitute for the ELJ-PC2R2MF. This part maintains identical inductance value and package footprint while offering active product status, ROHS3 compliance, and extended operating temperature range (-40°C ~ 125°C). The Bourns part features improved Q factor (25 @ 7.9MHz) and higher self-resonant frequency (160MHz). Current rating is reduced to 250 mA; circuit design must accommodate this lower current specification.

CW252016-2R2G (Bourns Inc.) provides an alternative with tighter inductance tolerance (±2%) and identical electrical specifications to CW252016-2R2J, with the exception of packaging format (cut tape versus tape & reel).

NLV25T-2R2J-PF (TDK Corporation) is classified as "Not For New Designs" and should be used only for legacy system maintenance. This part offers the lowest DC resistance (1.55Ohm Max) and highest Q factor (30 @ 7.96MHz) among available substitutes, but carries the lowest current rating (200 mA) and is subject to REACH compliance considerations.

Frequently Asked Questions (FAQ)

Q: Can CW252016-2R2J directly replace ELJ-PC2R2MF in existing designs?

A: CW252016-2R2J maintains the same inductance value (2.2 µH) and 1008 (2520 Metric) package footprint, enabling direct PCB placement. However, the current rating is reduced from 390 mA to 250 mA. Circuit designs operating above 250 mA require re-evaluation.

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

A: The ELJ-PC2R2MF has 650mOhm DCR, while substitute parts range from 1.55Ohm to 2.8Ohm. Higher DCR increases power dissipation and heat generation. Applications sensitive to inductor losses must account for this difference in thermal and efficiency calculations.

Q: Why is the ELJ-PC2R2MF obsolete?

A: Product obsolescence is determined by the manufacturer. Active alternatives with equivalent inductance and package specifications are available from Bourns and TDK.

Q: Are all substitute parts RoHS compliant?

A: CW252016-2R2J and CW252016-2R2G are ROHS3 compliant. NLV25T-2R2J-PF is ROHS3 compliant but carries REACH Affected status.

Q: What is the difference between CW252016-2R2G and CW252016-2R2J?

A: Both parts are electrically identical with the same inductance, current rating, and DCR specifications. The primary difference is packaging format: CW252016-2R2G is supplied in cut tape format, while CW252016-2R2J is supplied in tape & reel format.

Q: Can NLV25T-2R2J-PF be used in new designs?

A: NLV25T-2R2J-PF is designated "Not For New Designs" by TDK. This part should be reserved for legacy system support and maintenance only.

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