0805-3N3J Equivalent & Substitute Parts

Part Overview

The 0805-3N3J is a 3.3 nH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 600 mA with a maximum DC resistance of 80 mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across a temperature range of -40°C to 125°C and is designed for surface mount applications in the 0805 (2015 Metric) package footprint.

Key Parameters

Parameter	Value
Inductance	3.3 nH
Tolerance	±5%
Current Rating	600 mA
DC Resistance (DCR)	80 mOhm Max
Core Material	Ceramic
Shielding	Unshielded
Q @ Frequency	50 @ 1.5 GHz
Self Resonant Frequency	6 GHz
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	0805 (2015 Metric)
Size / Dimension	0.090" L x 0.068" W (2.29 mm x 1.73 mm)
Height - Seated (Max)	0.060" (1.52 mm)
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 0805-3N3J are qualified based on the following electrical and mechanical parameters:

Inductance value: 3.3 nH with ±5% tolerance
Current rating: 600 mA minimum
DC resistance: 80 mOhm maximum
Core material: Ceramic
Shielding configuration: Unshielded
Self resonant frequency: 6 GHz
Operating temperature range: -40°C to 125°C
Surface mount package compatibility: 0805 form factor
Moisture sensitivity level: 1 (Unlimited)

Two active substitute parts meet these criteria and are available in production quantities.

Parameter Comparison

Parameter	0805-3N3J (API Delevan)	36502A3N3JTDG (TE Connectivity)	CW201212-3N3J (Bourns)
Inductance	3.3 nH	3.3 nH	3.3 nH
Tolerance	±5%	±5%	±5%
Current Rating (Amps)	600 mA	600 mA	600 mA
DC Resistance (DCR)	80 mOhm Max	80 mOhm Max	80 mOhm
Core Material	Ceramic	Ceramic	Ceramic
Shielding	Unshielded	Unshielded	Unshielded
Q @ 1.5 GHz	50	50	30
Self Resonant Frequency	6 GHz	6 GHz	6 GHz
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	0805 (2015 Metric)	0805 (2015 Metric)	0805 (2012 Metric)
Size / Dimension	0.090" L x 0.068" W (2.29 mm x 1.73 mm)	0.090" L x 0.068" W (2.29 mm x 1.73 mm)	0.083" L x 0.059" W (2.10 mm x 1.50 mm)
Height - Seated (Max)	0.060" (1.52 mm)	0.060" (1.52 mm)	0.059" (1.50 mm)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

The 36502A3N3JTDG from TE Connectivity Passive Product is the primary substitute for the obsolete 0805-3N3J. This part maintains identical electrical specifications and physical dimensions while offering ROHS3 compliance and active product status with 64,720 units in stock. The part carries AEC-Q200 automotive qualification, providing additional reliability assurance for demanding applications.

The CW201212-3N3J from Bourns Inc. is an alternative substitute that meets all electrical requirements. While physical dimensions are slightly reduced (0.083" L x 0.059" W versus 0.090" L x 0.068" W), the part remains compatible with 0805 footprints due to the smaller form factor. This part is ROHS3 compliant and actively produced, with 794 units available. The Q factor at 1.5 GHz is specified at 30 compared to 50 for the primary substitute, which may be relevant for high-frequency applications requiring maximum quality factor.

Both substitute parts are surface mount compatible and maintain the same operating temperature range, inductance value, current rating, and DC resistance specifications as the original component.

Frequently Asked Questions (FAQ)

Q: Can the 36502A3N3JTDG directly replace the 0805-3N3J without PCB layout modifications?

A: Yes. The 36502A3N3JTDG maintains identical physical dimensions (0.090" L x 0.068" W, 2.29 mm x 1.73 mm) and height (0.060", 1.52 mm), allowing direct substitution on existing 0805 footprints without layout changes.

Q: What is the difference between the TE Connectivity and Bourns substitute parts?

A: Both parts meet the electrical specifications of the original component. The primary differences are physical dimensions and Q factor. The TE Connectivity 36502A3N3JTDG maintains the exact original dimensions and Q factor of 50 @ 1.5 GHz. The Bourns CW201212-3N3J has a smaller footprint (0.083" L x 0.059" W) and lower Q factor of 30 @ 1.5 GHz. Both are ROHS3 compliant and actively produced.

Q: Is the CW201212-3N3J compatible with the original 0805 footprint?

A: Yes. The CW201212-3N3J is smaller than the original part but remains compatible with 0805 surface mount pads due to its reduced form factor. However, verify PCB layout clearances if space constraints are critical.

Q: What compliance certifications apply to the substitute parts?

A: The 36502A3N3JTDG carries AEC-Q200 automotive qualification and is ROHS3 compliant. The CW201212-3N3J is ROHS3 compliant. Both parts have MSL rating of 1 (Unlimited) and are REACH unaffected or vendor undefined.

Q: Why is the original 0805-3N3J obsolete?

A: The 0805-3N3J is classified as obsolete by API Delevan Inc. Both substitute parts are actively produced by major manufacturers, ensuring long-term availability and supply chain stability.

Q: Are there any frequency-dependent performance differences between the substitutes?

A: The TE Connectivity 36502A3N3JTDG and original 0805-3N3J both specify Q @ 1.5 GHz of 50. The Bourns CW201212-3N3J specifies Q @ 1.5 GHz of 30. For applications operating at or near 1.5 GHz where quality factor is critical, the TE Connectivity part provides superior performance matching the original specification.

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