0603-10NK

Part Overview

The 0603-10NK is a 10 nH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 700 mA with a maximum DC resistance of 130 mOhm. This component is currently obsolete, which necessitates identifying equivalent substitute parts for ongoing applications and new designs requiring 10 nH inductance in the 0603 form factor.

Substiute Parts

0603-10NK

API Delevan Inc.In Stock: 10980603-10NK Datasheet

Current PartRFQ

CW160808-10NJ

Bourns Inc.In Stock: 2157CW160808-10NJ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 0603-10NK is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Inductance Value: 10 nH (exact match required)
• Current Rating: 700 mA minimum
• DC Resistance: 130 mOhm maximum
• Self-Resonant Frequency: 4.8 GHz
• Test Frequency: 250 MHz
• Operating Temperature Range: -40°C to +125°C
• Mounting Type: Surface Mount
• Package Form Factor: 0603 (1608 Metric) compatible dimensions

The CW160808-10NJ by Bourns Inc. qualifies as an equivalent substitute based on matching all critical electrical parameters within acceptable tolerances and maintaining physical compatibility with the 0603 form factor.

Parameter Comparison

Engineering Selection Recommendations

0603-10NK (API Delevan Inc.): Obsolete status restricts this component to applications with existing inventory or legacy system maintenance. RoHS non-compliance limits applicability in regulated environments.

CW160808-10NJ (Bourns Inc.): This is the recommended substitute for new designs and reprocurement of the 0603-10NK. The part maintains active product status with full ROHS3 compliance, supporting long-term supply chain reliability. Inductance tolerance of ±5% provides tighter specification than the original ±10%. Physical dimensions are within 0603 (1608 Metric) standard envelope, though the CW160808-10NJ exhibits slightly increased height (0.047" versus 0.040"). All critical electrical parameters—inductance, current rating, DC resistance, and operating temperature range—match or exceed original specifications. Selection of the CW160808-10NJ is appropriate for applications requiring regulatory compliance and sustained component availability.

Frequently Asked Questions (FAQ)

Q: Can CW160808-10NJ directly replace 0603-10NK without circuit modification? A: Yes. The CW160808-10NJ maintains identical inductance value (10 nH), current rating (700 mA), DC resistance (130 mOhm), self-resonant frequency (4.8 GHz), and operating temperature range (-40°C to +125°C). Physical dimensions are within the 0603 (1608 Metric) standard form factor. Mounting type and electrical performance are compatible.

Q: What is the significance of the different package designations (0603 Nonstandard vs. 0603 Metric)? A: The 0603-10NK uses nonstandard dimensions (1.80mm x 1.14mm), while the CW160808-10NJ conforms to the standardized 0603 (1608 Metric) footprint (1.65mm x 1.05mm). Both fit within 0603 land pattern tolerances. The CW160808-10NJ exhibits marginally greater seated height (0.047" versus 0.040"), which may require clearance verification in height-constrained assemblies.

Q: How do inductance tolerances affect substitution? A: The CW160808-10NJ specifies ±5% tolerance compared to ±10% for the 0603-10NK. Tighter tolerance in the substitute provides improved inductance consistency and is compatible with circuit designs requiring the original ±10% tolerance band.

Q: Is RoHS compliance important for this substitution? A: The CW160808-10NJ holds ROHS3 certification while the 0603-10NK is RoHS non-compliant. For applications subject to RoHS regulations, RoHS-compliant induction is required. The 0603-10NK is restricted to legacy systems exempt from RoHS requirements.

Q: What does MSL rating 1 signify? A: Moisture Sensitivity Level (MSL) 1 indicates unlimited shelf life without moisture-related degradation. Both components carry this rating, confirming equivalent moisture performance.