S0402-22NJ3B Equivalent & Substitute Parts

Part Overview

The S0402-22NJ3B is a 22 nH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 400 mA with a maximum DC resistance of 350 mOhm. This surface mount component in 0402 (1005 Metric) package is designed for high-frequency applications with a self-resonant frequency of 2.8 GHz. The part is currently active in production. Substitute parts may be required due to inventory availability, lead time constraints, or specific application requirements such as improved DC resistance characteristics or enhanced compliance certifications.

Substiute Parts

S0402-22NJ3B

API Delevan Inc.In Stock: 1102S0402-22NJ3B Datasheet

Current PartRFQ

744765122A

Würth ElektronikIn Stock: 11214744765122A Datasheet

SimilarRFQ

CW100505-22NJ

Bourns Inc.In Stock: 10280CW100505-22NJ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S0402-22NJ3B are qualified based on the following critical parameters that must remain constant or within acceptable engineering tolerances:

• Inductance value: 22 nH with ±5% tolerance
• Current rating: 400 mA minimum
• Package / Case: 0402 (1005 Metric) surface mount
• Shielding configuration: Unshielded
• Self-resonant frequency: 2.8 GHz
• Inductance test frequency: 250 MHz

The substitute parts listed below meet these core electrical and mechanical requirements. Variations in DC resistance (within the 300–350 mOhm range), core material (ceramic vs. alumina), and compliance certifications are secondary parameters that do not prevent functional substitution in most applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts are active products with identical core electrical specifications: 22 nH inductance, 400 mA current rating, ±5% tolerance, and 0402 surface mount package.

The 744765122A (Würth Elektronik) and CW100505-22NJ (Bourns) both offer improved DC resistance characteristics at 300 mOhm maximum, compared to the 350 mOhm maximum of the S0402-22NJ3B. Both substitute parts carry ROHS3 compliance certification, whereas the original part is RoHS non-compliant.

The CW100505-22NJ maintains the full operating temperature range of -55°C ~ 125°C, matching the original specification. The 744765122A operates from -40°C ~ 125°C, which may be a limiting factor in applications requiring extended low-temperature performance.

Selection should be based on compliance requirements, inventory availability, and specific thermal operating conditions of the target application.

Frequently Asked Questions (FAQ)

Q: Can the 744765122A or CW100505-22NJ be used as direct replacements for the S0402-22NJ3B?

A: Yes, both parts are functionally equivalent for applications requiring 22 nH inductance at 400 mA. All three parts share identical inductance values, tolerance, current rating, package type, and self-resonant frequency. The substitute parts offer lower DC resistance and improved compliance certifications.

Q: What is the significance of the DC resistance difference between 350 mOhm and 300 mOhm?

A: DC resistance affects power dissipation and thermal performance. The lower 300 mOhm specification of the substitute parts results in reduced resistive losses. Applications sensitive to inductor heating or power efficiency may benefit from the improved DC resistance characteristics.

Q: Are there temperature range limitations when substituting parts?

A: The 744765122A operates from -40°C ~ 125°C, which is narrower than the original S0402-22NJ3B and CW100505-22NJ at -55°C ~ 125°C. Applications requiring operation below -40°C must use either the original part or the Bourns CW100505-22NJ.

Q: Do compliance certifications affect electrical performance?

A: Compliance certifications such as ROHS3 and AEC-Q200 indicate manufacturing and material standards but do not alter the electrical performance of the inductor. These certifications are relevant for supply chain requirements and regulatory compliance in specific markets or applications.

Q: Is the package size identical across all three parts?

A: Yes. All three parts use the 0402 (1005 Metric) surface mount package with identical footprints and mounting requirements. Physical dimensions are nearly identical, with the substitute parts slightly smaller in seated height (0.024" vs. 0.030").