ELJ-PC6R8KF Equivalent & Substitute Parts

Part Overview

The Panasonic ELJ-PC6R8KF is a 6.8 µH unshielded wirewound inductor rated for 170 mA with a maximum DC resistance of 1.3Ohm in a 1008 (2520 Metric) surface mount package. This part is classified as obsolete, making substitute components necessary for new designs and ongoing production support. The electrical and mechanical specifications of this inductor define the parameters within which equivalent parts must operate.

Substiute Parts

ELJ-PC6R8KF

Panasonic Electronic ComponentsIn Stock: 720ELJ-PC6R8KF Datasheet

Current PartRFQ

NLCV25T-6R8M-EF

TDK CorporationIn Stock: 6861NLCV25T-6R8M-EF Datasheet

SimilarRFQ

NLV25T-6R8J-PF

TDK CorporationIn Stock: 3999NLV25T-6R8J-PF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ELJ-PC6R8KF must maintain the following core electrical and mechanical parameters:

• Inductance: 6.8 µH (exact match required)
• Package / Case: 1008 (2520 Metric) (exact match required for PCB compatibility)
• Mounting Type: Surface Mount (exact match required)
• Shielding: Unshielded (exact match required)
• Inductance Frequency - Test: 7.96 MHz (exact match required for measurement consistency)

Substitute parts may vary within acceptable ranges for:

• Current Rating: Must be ≥170 mA to support the original design current
• DC Resistance (DCR): Must be ≤1.3Ohm Max to maintain electrical performance
• Operating Temperature: Must encompass or exceed the original range of -20°C ~ 85°C
• Tolerance: May differ from the original ±10%

The two substitute parts identified meet these criteria while offering improved availability and extended product lifecycle support.

Parameter Comparison

Engineering Selection Recommendations

NLCV25T-6R8M-EF (TDK Corporation) is the primary substitute for new designs. This part is classified as Active, ensuring long-term availability and supply chain stability. It exceeds the original current rating at 275 mA while maintaining the maximum DC resistance specification of 1.3Ohm. The extended operating temperature range of -40°C ~ 105°C provides additional thermal margin. ROHS3 compliance and ferrite drum core construction offer improved electromagnetic performance with a Q factor of 20 @ 7.96MHz compared to the original 8.5.

NLV25T-6R8J-PF (TDK Corporation) is a secondary substitute option. This part carries a "Not For New Designs" status, limiting its suitability for new product development. However, it remains available for legacy system support with 3,935 pieces in stock. The tighter tolerance of ±5% and higher Q factor of 25 @ 7.96MHz provide superior performance characteristics. The maximum DC resistance of 2.7Ohm exceeds the original specification and must be evaluated against circuit requirements. The current rating of 165 mA is marginally below the original 170 mA specification and requires verification for applications operating at or near the original current limit.

Frequently Asked Questions (FAQ)

Q: Can NLCV25T-6R8M-EF directly replace ELJ-PC6R8KF without circuit modifications?

A: Yes. Both parts share identical inductance (6.8 µH), package (1008/2520 Metric), and maximum DC resistance (1.3Ohm). The NLCV25T-6R8M-EF exceeds the current rating requirement at 275 mA versus 170 mA, and its extended operating temperature range (-40°C ~ 105°C) encompasses the original specification (-20°C ~ 85°C). No circuit modifications are required.

Q: Why does NLV25T-6R8J-PF have a higher DC resistance specification?

A: The NLV25T-6R8J-PF exhibits a maximum DC resistance of 2.7Ohm compared to 1.3Ohm in the original part. This parameter is determined by the inductor's wire gauge and construction. Applications sensitive to resistive losses or operating at the maximum current rating of 170 mA must evaluate whether the additional 1.4Ohm of resistance is acceptable for their circuit function.

Q: What is the significance of the "Not For New Designs" status on NLV25T-6R8J-PF?

A: This designation indicates that TDK Corporation does not recommend this part for new product development. While the part remains available for existing applications, long-term supply cannot be guaranteed. For new designs, NLCV25T-6R8M-EF with Active status is the preferred selection.

Q: Are all substitute parts RoHS compliant?

A: Yes. Both NLCV25T-6R8M-EF and NLV25T-6R8J-PF are ROHS3 compliant. The original ELJ-PC6R8KF RoHS status was not specified in the available data.

Q: How do the Q factors differ between the original and substitute parts?

A: The original ELJ-PC6R8KF exhibits a Q factor of 8.5 @ 7.96MHz. NLCV25T-6R8M-EF provides 20 @ 7.96MHz, and NLV25T-6R8J-PF provides 25 @ 7.96MHz. Higher Q factors indicate lower losses and improved inductor efficiency. Both substitutes offer superior performance in this parameter.

Q: Can these parts be used interchangeably in the same PCB assembly?

A: Yes. All three parts use identical 1008 (2520 Metric) surface mount packages with matching footprints (0.098" L x 0.079" W / 2.50mm x 2.00mm). Height differences are minimal (original 0.071" / 1.80mm versus substitutes 0.075" / 1.90mm), presenting no assembly or clearance concerns.