S0402-22NJ1E Equivalent & Substitute Parts

Part Overview

The S0402-22NJ1E is a 22 nH unshielded drum core wirewound inductor manufactured by API Delevan Inc., designed for surface mount applications in the 0402 (1005 Metric) package form factor. This component is specified for 400 mA maximum current with 350 mOhm maximum DC resistance and operates across the temperature range of -55°C to 125°C. The part is currently in active production status. Substitute parts are identified where electrical parameters and mechanical compatibility meet the stringent requirements of this product category, enabling component procurement flexibility while maintaining design integrity.

Key Parameters

Parameter	Value	Unit
Inductance	22	nH
Tolerance	±5%	—
Current Rating	400	mA
DC Resistance (Maximum)	350	mOhm
Q @ 250 MHz	24	—
Self Resonant Frequency	2.8	GHz
Operating Temperature Range	-55 to 125	°C
Package / Case	0402 (1005 Metric)	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution eligibility for the S0402-22NJ1E is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

Inductance: 22 nH (±5% tolerance maintained across all candidates)
Current Rating: 400 mA minimum
Package / Case: 0402 (1005 Metric) form factor required
Mounting Type: Surface Mount
Self Resonant Frequency: 2.8 GHz

Allowable Parameter Variations:

DC Resistance (DCR): Substitute parts with lower DCR values are acceptable as they provide equivalent or improved performance
Q @ 250 MHz: Values equal to or greater than the main part specification are acceptable
Operating Temperature Range: Substitute parts must cover the minimum required operational envelope

The identified substitute parts (744765122A and CW100505-22NJ) satisfy all critical parameters while demonstrating improved DC resistance characteristics and equivalent or superior Q-factor performance at 250 MHz.

Parameter Comparison

Parameter	S0402-22NJ1E (API Delevan)	744765122A (Würth Elektronik)	CW100505-22NJ (Bourns Inc.)
Inductance	22 nH	22 nH	22 nH
Tolerance	±5%	±5%	±5%
Current Rating	400 mA	400 mA	400 mA
DC Resistance (Maximum)	350 mOhm	300 mOhm	300 mOhm
Q @ 250 MHz	24	25	25
Self Resonant Frequency	2.8 GHz	2.8 GHz	2.8 GHz
Operating Temperature Range	-55 to 125°C	-40 to 125°C	-55 to 125°C
Package / Case	0402 (1005 Metric)	0402 (1005 Metric)	0402 (1005 Metric)
Size / Dimension	0.043" L × 0.025" W (1.09mm × 0.64mm)	0.039" L × 0.022" W (1.00mm × 0.55mm)	0.039" L × 0.022" W (1.00mm × 0.55mm)
Height - Seated (Maximum)	0.030" (0.76mm)	0.024" (0.60mm)	0.024" (0.60mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount

Engineering Selection Recommendations

S0402-22NJ1E (API Delevan Inc.) Primary selection for applications where RoHS non-compliant components are acceptable. Current product status is active with 676 units in stock.

744765122A (Würth Elektronik) Qualified substitute with active product status and AEC-Q200 rating. This part demonstrates improved DC resistance (300 mOhm vs. 350 mOhm) and enhanced Q-factor (25 vs. 24 @ 250 MHz). RoHS3 compliance is achieved. Operating temperature range spans -40°C to 125°C, which covers the majority of commercial and industrial applications but does not extend to the -55°C lower limit of the original specification.

CW100505-22NJ (Bourns Inc.) Qualified substitute with active product status. DC resistance and Q-factor match the Würth Elektronik part. RoHS3 compliance is achieved. Operating temperature range spans -55°C to 125°C, providing full compatibility with the original specification's temperature envelope.

Selection between substitute parts should be based on regulatory compliance requirements, inventory availability, and thermal operating envelope demands specific to the application circuit.

Frequently Asked Questions (FAQ)

Q: Can the 744765122A replace the S0402-22NJ1E in all applications? A: The 744765122A is electrically compatible for inductance, current rating, and RF performance. The operating temperature range (-40°C to 125°C) differs from the original part (-55°C to 125°C). Substitution is valid for applications not requiring operation below -40°C.

Q: What is the benefit of the lower DC resistance in the substitute parts? A: The DC resistance reduction from 350 mOhm to 300 mOhm directly decreases ohmic losses in the inductor, resulting in lower power dissipation and improved thermal performance in high-current applications. This represents an improvement over the original specification.

Q: Are the substitute parts mechanically compatible with the original design? A: All parts share the identical 0402 (1005 Metric) package form factor and surface mount technology. However, physical dimensions vary slightly: the substitute parts are smaller in lateral dimensions (1.00mm × 0.55mm versus 1.09mm × 0.64mm) and seated height (0.60mm versus 0.76mm). PCB footprint compatibility must be verified for each application.

Q: Which substitute part maintains full specification compatibility? A: The CW100505-22NJ maintains complete parameter compatibility across inductance, current rating, DC resistance, Q-factor, self-resonant frequency, and the full operating temperature range (-55°C to 125°C).

Q: What does AEC-Q200 rating signify? A: AEC-Q200 is an automotive electronics qualification standard. The 744765122A carries this certification, indicating enhanced reliability validation for automotive and high-reliability applications.

Q: Are substitute parts available in equivalent packaging formats? A: The S0402-22NJ1E is supplied in Bulk packaging, while substitute parts are supplied in Tape & Reel (TR) format, which is the standard for surface mount component distribution.

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