0603-68NK Equivalent & Substitute Parts Reference

Part Overview

The API Delevan Inc. 0603-68NK is a 68 nH unshielded drum core wirewound inductor rated for 600 mA with a maximum DC resistance of 340mOhm. This component operates across the temperature range of -40°C to 125°C and is designed for surface mount applications in the 0603 form factor.

The 0603-68NK is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductance value and current rating.

Substiute Parts

0603-68NK

API Delevan Inc.In Stock: 11450603-68NK Datasheet

Current PartRFQ

CW160808-68NJ

Bourns Inc.In Stock: 4104CW160808-68NJ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0603-68NK are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Primary Electrical Parameters:

• Inductance value: 68 nH (core requirement)
• Current rating: 600 mA minimum
• DC resistance: 340mOhm maximum
• Self resonant frequency: 1.7 GHz
• Operating temperature range: -40°C to 125°C minimum

Mechanical Parameters:

• Mounting type: Surface mount
• Package classification: 0603 form factor or equivalent metric dimensions
• Core construction: Drum core, wirewound

Tolerance Consideration: Inductance tolerance variations (±10% vs. ±5%) are acceptable provided the substitute maintains the specified inductance value within its stated tolerance band at the test frequency of 200 MHz.

Parameter Comparison

Engineering Selection Recommendations

Bourns CW160808-68NJ qualifies as a direct substitute for the obsolete API Delevan 0603-68NK based on matched electrical specifications and mechanical compatibility.

Compliance Advantage: The CW160808-68NJ carries active product status and ROHS3 compliance certification, whereas the 0603-68NK is obsolete and RoHS non-compliant. For new designs or production requiring regulatory compliance, the Bourns substitute is the appropriate selection.

Dimensional Consideration: The CW160808-68NJ exhibits slightly reduced physical dimensions (1.65mm x 1.05mm vs. 1.80mm x 1.14mm length and width) with a marginal increase in seated height (1.20mm vs. 1.02mm). These dimensional differences fall within standard PCB layout tolerances for 0603 form factor components.

Electrical Performance: Both inductors deliver identical inductance values, current ratings, and DC resistance specifications. The CW160808-68NJ provides tighter inductance tolerance (±5% vs. ±10%), which may improve circuit performance consistency. Quality factor measurements differ slightly (35 @ 250MHz vs. 37 @ 200MHz), reflecting measurement at different frequencies but confirming comparable high-frequency performance.

Supply Availability: The CW160808-68NJ maintains active inventory status (4080 pcs available) compared to the 0603-68NK obsolete status, ensuring reliable long-term supply chain access.

Frequently Asked Questions (FAQ)

Q: Can the Bourns CW160808-68NJ directly replace the API Delevan 0603-68NK in existing designs?

A: Yes. Both inductors share identical inductance (68 nH), current rating (600 mA), DC resistance (340mOhm max), and operating temperature range (-40°C to 125°C). Dimensional differences are minimal and compatible with standard 0603 PCB footprints. Verify PCB layout clearances for the marginal height increase (1.20mm vs. 1.02mm).

Q: What is the significance of the inductance tolerance difference (±10% vs. ±5%)?

A: The CW160808-68NJ provides tighter tolerance control, meaning inductance values remain closer to the nominal 68 nH specification. For applications sensitive to inductance variation, the Bourns part offers improved consistency. Both parts meet the specified inductance value at the 200 MHz test frequency.

Q: Are there compliance differences between these parts?

A: Yes. The CW160808-68NJ is ROHS3 compliant and carries active product status, while the 0603-68NK is RoHS non-compliant and obsolete. For applications requiring regulatory compliance or long-term supply assurance, the Bourns substitute is required.

Q: Do the core material differences (Ceramic vs. Alumina) affect performance?

A: Both ceramic and alumina core materials are standard for drum core wirewound inductors in this inductance range. The electrical performance parameters (inductance, Q factor, self-resonant frequency, DC resistance) are equivalent, indicating functional compatibility.

Q: What packaging format is the CW160808-68NJ supplied in?

A: The CW160808-68NJ is supplied in Tape & Reel (TR) format, standard for automated assembly processes. The 0603-68NK packaging format is listed as nonstandard.

Q: Are moisture sensitivity levels equivalent?

A: Yes. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity concerns and no special storage or handling requirements.