ELJ-PC1R0MF Equivalent & Substitute Parts

Part Overview

The ELJ-PC1R0MF is a 1 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 475 mA with a maximum DC resistance of 450 mOhm. This surface mount component in 1008 (2520 Metric) package is classified as obsolete, necessitating identification of equivalent alternatives for ongoing production and maintenance applications. Substitute parts must maintain electrical compatibility across inductance, current rating, and DC resistance parameters while accommodating package and thermal specifications.

Substiute Parts

ELJ-PC1R0MF

Panasonic Electronic ComponentsIn Stock: 1035ELJ-PC1R0MF Datasheet

Current PartRFQ

NLCV25T-1R0M-EF

TDK CorporationIn Stock: 4196NLCV25T-1R0M-EF Datasheet

DirectRFQ

NLCV25T-1R0M-EFR

TDK CorporationIn Stock: 1998NLCV25T-1R0M-EFR Datasheet

DirectRFQ

NLCV25T-1R0M-PF

TDK CorporationIn Stock: 1999NLCV25T-1R0M-PF Datasheet

DirectRFQ

NLCV25T-1R0M-PFR

TDK CorporationIn Stock: 4527NLCV25T-1R0M-PFR Datasheet

DirectRFQ

CW252016-1R0G

Bourns Inc.In Stock: 944CW252016-1R0G Datasheet

SimilarRFQ

MAMK2520T1R0M

Taiyo YudenIn Stock: 16300MAMK2520T1R0M Datasheet

SimilarRFQ

NLV25T-1R0J-PF

TDK CorporationIn Stock: 171405NLV25T-1R0J-PF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Primary Compatibility Criteria:

• Inductance value: 1 µH (exact match required)
• Package / Case: 1008 (2520 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Shielding: Unshielded (exact match required)

Secondary Compatibility Criteria:

• Current Rating: Must equal or exceed 475 mA
• DC Resistance (DCR): Must not exceed 450 mOhm
• Tolerance: ±20% or tighter acceptable
• Operating Temperature: Must encompass or exceed -20°C ~ 85°C range

Parts are classified as Direct Substitutes when all primary and secondary criteria are met. Parts are classified as Similar when one or more secondary criteria deviate from the main part specification.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Recommended for New Designs):

NLCV25T-1R0M-EF (TDK Corporation) meets all primary and secondary compatibility criteria with Active product status. This part maintains 1 µH inductance, 475 mA current rating, and 442 mOhm DCR within specification limits. The extended operating temperature range (-40°C ~ 105°C) provides thermal margin beyond the original part. RoHS3 compliance and REACH unaffected status support regulatory requirements.

NLCV25T-1R0M-EFR (TDK Corporation) provides enhanced performance with 1 A current rating and 168 mOhm DCR, offering significant margin above the 475 mA requirement. Active product status ensures long-term availability. Extended temperature range to 105°C and RoHS3 compliance support modern design standards.

Direct Substitutes (Legacy Applications Only):

NLCV25T-1R0M-PF and NLCV25T-1R0M-PFR (TDK Corporation) provide electrical equivalence but carry "Not For New Designs" status. These parts are suitable for maintenance and repair of existing systems only.

Similar Parts (Conditional Use):

CW252016-1R0G (Bourns Inc.) maintains 1 µH inductance and unshielded configuration but exhibits 330 mA current rating below the 475 mA requirement and 1.75 Ohm DCR significantly exceeding 450 mOhm specification. This part is unsuitable for direct substitution.

MAMK2520T1R0M (Taiyo Yuden) provides superior current handling (2.7 A) and minimal DCR (59 mOhm) but introduces shielding, deviating from the unshielded requirement. "Not For New Designs" status limits applicability.

NLV25T-1R0J-PF (TDK Corporation) falls below current rating requirement (245 mA versus 475 mA) and exhibits excessive DCR (1.1 Ohm). This part does not meet substitution criteria.

Frequently Asked Questions (FAQ)

Q: Can NLCV25T-1R0M-EF directly replace ELJ-PC1R0MF in existing designs?

A: Yes. NLCV25T-1R0M-EF maintains identical inductance (1 µH), meets current rating (475 mA), stays within DCR limits (442 mOhm max), and preserves unshielded configuration in the same 1008 package. Active product status ensures availability.

Q: What is the difference between NLCV25T-1R0M-EF and NLCV25T-1R0M-EFR?

A: Both are TDK Active products in the same package. NLCV25T-1R0M-EFR provides higher current capacity (1 A versus 475 mA) and lower DCR (168 mOhm versus 442 mOhm), offering performance margin. Selection depends on circuit current requirements.

Q: Why is CW252016-1R0G not recommended as a substitute?

A: CW252016-1R0G current rating (330 mA) is insufficient for the 475 mA requirement. DC resistance (1.75 Ohm) exceeds the 450 mOhm maximum by a factor of approximately 3.9, introducing unacceptable power loss and thermal effects.

Q: Can shielded inductors like MAMK2520T1R0M replace the unshielded ELJ-PC1R0MF?

A: No. The ELJ-PC1R0MF is specified as unshielded. Introducing shielding alters electromagnetic coupling characteristics and circuit behavior. MAMK2520T1R0M is classified as a similar part only, not a direct substitute.

Q: What is the significance of "Not For New Designs" status?

A: Parts marked "Not For New Designs" are in mature or declining production phases. While electrically compatible, they are not recommended for new product development due to potential future discontinuation. NLCV25T-1R0M-EF and NLCV25T-1R0M-EFR with Active status are preferred for new designs.

Q: Are there package compatibility concerns between substitute parts?

A: All listed parts use the 1008 (2520 Metric) package with identical footprint dimensions (0.098" L x 0.079" W). Height variations (1.80 mm to 1.90 mm) are within standard PCB assembly tolerances and do not affect placement or soldering.

Q: Does operating temperature range affect substitution suitability?

A: The original ELJ-PC1R0MF operates -20°C ~ 85°C. Substitute parts with extended ranges (-40°C ~ 105°C or -40°C ~ 125°C) provide thermal margin and are fully compatible. Substitutes with narrower ranges would require thermal analysis to confirm suitability.