0603-7N5J Fixed Inductor Equivalent & Substitute Parts

Part Overview

The API Delevan Inc. 0603-7N5J is a 7.5 nH unshielded drum core wirewound inductor rated for 700 mA with a maximum DC resistance of 110 mOhm. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing production and maintenance applications. The part operates across the temperature range of -40°C to 125°C and is designed for surface mount assembly in compact form factors.

Due to the obsolete status of the 0603-7N5J, substitute parts with matching electrical and mechanical specifications are required to maintain design continuity and ensure functional compatibility in existing circuit applications.

Substiute Parts

0603-7N5J

API Delevan Inc.In Stock: 11680603-7N5J Datasheet

Current PartRFQ

36501J7N5JTDG

TE Connectivity Passive ProductIn Stock: 316036501J7N5JTDG Datasheet

DirectRFQ

LQW18AS7N5J00D

Murata ElectronicsIn Stock: 16707LQW18AS7N5J00D Datasheet

SimilarRFQ

PE-0603CD7N5JTT

Pulse ElectronicsIn Stock: 794PE-0603CD7N5JTT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0603-7N5J are identified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Critical Matching Parameters:

• Inductance value: 7.5 nH with ±5% tolerance
• Current rating: 700 mA minimum
• DC resistance: 110 mOhm maximum
• Self resonant frequency: 4.8 GHz
• Q factor @ 250 MHz: 27 or higher
• Operating temperature range: -40°C to 125°C
• Shielding configuration: Unshielded
• Mounting type: Surface Mount
• Moisture sensitivity: MSL 1

The substitute parts are grouped into two categories based on their alignment with these parameters:

Direct Substitutes (Electrical Equivalence): Parts meeting all critical electrical parameters with active product status and modern compliance certifications.

Similar Substitutes (Functional Equivalence with Noted Variations): Parts meeting core electrical specifications with minor parameter deviations that remain within acceptable operating margins for the application.

Parameter Comparison

Engineering Selection Recommendations

36501J7N5JTDG (TE Connectivity Passive Product) is the primary recommended substitute. This part demonstrates complete electrical parameter equivalence with the 0603-7N5J, including identical inductance, current rating, DC resistance, and Q factor specifications. The 36501J7N5JTDG carries active product status with AEC-Q200 automotive qualification and ROHS3 compliance, ensuring long-term availability and regulatory alignment. The standard 0603 (1608 Metric) package provides compatibility with modern PCB assembly processes. Inventory availability of 3089 pieces supports production requirements.

LQW18AS7N5J00D (Murata Electronics) serves as a secondary substitute option. This part meets all critical electrical specifications with a marginally lower DC resistance of 106 mOhm (compared to 110 mOhm maximum) and a slightly higher Q factor of 28 at 250 MHz. The core material differs (non-magnetic versus ceramic), which does not affect the specified electrical performance. The part carries active status with ROHS3 compliance and REACH compliance confirmation. High inventory availability of 16646 pieces supports supply chain continuity. The smaller physical dimensions (1.60mm x 0.80mm versus 1.80mm x 1.14mm) may require PCB layout verification for space-constrained applications.

PE-0603CD7N5JTT (Pulse Electronics) is a tertiary option with functional equivalence. This part meets the core electrical specifications but exhibits a higher DC resistance of 150 mOhm maximum, representing a 36% increase over the original specification. This elevated resistance may impact circuit performance in applications sensitive to inductor losses. The part carries active status with RoHS compliance. The smaller 0402 (1005 Metric) package requires PCB redesign and assembly process validation. Lower inventory availability of 771 pieces may present supply constraints.

Selection should prioritize the 36501J7N5JTDG for direct replacement applications requiring electrical equivalence and regulatory compliance. Alternative selections require circuit performance analysis to confirm tolerance of parameter deviations.

Frequently Asked Questions (FAQ)

Q: Can the 36501J7N5JTDG directly replace the 0603-7N5J without circuit modification?

A: Yes. The 36501J7N5JTDG provides complete electrical parameter equivalence across inductance, current rating, DC resistance, Q factor, and self resonant frequency. The standard 0603 (1608 Metric) package is compatible with existing PCB layouts designed for the original nonstandard 0603 form factor. No circuit modification is required.

Q: What is the significance of the core material difference between the LQW18AS7N5J00D (non-magnetic) and the original 0603-7N5J (ceramic)?

A: The core material difference does not affect the specified electrical performance parameters. Both configurations deliver the required 7.5 nH inductance, 700 mA current rating, and 4.8 GHz self resonant frequency. The non-magnetic core in the Murata part may exhibit different temperature coefficient behavior, but this is not specified in the provided parameters and does not impact the stated operating range of -40°C to 125°C.

Q: Why does the PE-0603CD7N5JTT have a higher DC resistance specification?

A: The PE-0603CD7N5JTT exhibits a maximum DC resistance of 150 mOhm compared to the 110 mOhm specification of the original part. This 36% increase results from the smaller physical package size (0402 versus nonstandard 0603), which constrains wire gauge and increases resistive losses. Applications sensitive to inductor losses or operating at high currents near the 700 mA rating should verify circuit performance with this higher resistance value.

Q: Are all substitute parts RoHS compliant?

A: The 36501J7N5JTDG and LQW18AS7N5J00D carry ROHS3 compliance certifications. The PE-0603CD7N5JTT carries RoHS compliance. The original 0603-7N5J is marked as RoHS non-compliant. All substitute parts meet current regulatory requirements for new designs and production.

Q: What packaging format differences exist among the substitute parts?

A: The 36501J7N5JTDG is supplied in Tape & Reel (TR) format in standard 0603 (1608 Metric) package. The LQW18AS7N5J00D is supplied in Tape & Reel (TR) format in standard 0603 (1608 Metric) package. The PE-0603CD7N5JTT is supplied in Bulk format in 0402 (1005 Metric) package. The smaller 0402 package requires PCB layout and assembly process validation. Tape & Reel packaging supports automated assembly processes.

Q: Which substitute part offers the best long-term availability?

A: The LQW18AS7N5J00D from Murata Electronics demonstrates the highest inventory level at 16646 pieces, indicating strong supply chain support. The 36501J7N5JTDG from TE Connectivity carries AEC-Q200 automotive qualification, which typically ensures extended product lifecycle support. Both parts carry active product status. The PE-0603CD7N5JTT shows lower inventory availability at 771 pieces.

Q: Can the substitute parts be used interchangeably in the same circuit?

A: The 36501J7N5JTDG and LQW18AS7N5J00D can be used interchangeably for most applications due to equivalent electrical performance. The PE-0603CD7N5JTT requires circuit performance analysis due to the elevated DC resistance specification and smaller package size. Physical PCB layout compatibility must be verified for all substitutions, particularly when transitioning between different package sizes.