0805-33NJ Equivalent & Substitute Parts

Part Overview

The 0805-33NJ is a 33 nH unshielded drum core wirewound inductor manufactured by API Delevan Inc., rated for 500 mA with a maximum DC resistance of 270mOhm. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Substitute parts must maintain electrical performance across the specified operating temperature range of -40°C to 125°C while meeting the same inductance, current rating, and impedance characteristics.

Key Parameters

Parameter	Value
Inductance	33 nH
Tolerance	±5%
Current Rating	500 mA
DC Resistance (DCR)	270mOhm Max
Q @ Frequency	60 @ 500MHz
Self Resonant Frequency	2.05GHz
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package	0805 (2012 Metric)
Shielding	Unshielded
Core Material	Ceramic

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: inductance value (33 nH ±5%), current rating (500 mA minimum), DC resistance specification (270mOhm maximum), Q factor at 500MHz (60 minimum), self-resonant frequency (2.0GHz or higher), operating temperature range (-40°C to 125°C), surface mount 0805 package format, unshielded ceramic core construction, and moisture sensitivity level (MSL 1).

The substitute parts are classified into two categories:

Direct Equivalents meet all electrical and mechanical specifications with identical or superior performance characteristics and active product status.

Compatible Substitutes meet all critical electrical parameters but may have minor variations in physical dimensions or compliance certifications that do not affect functional performance in the specified application.

Parameter Comparison

Parameter	0805-33NJ (API Delevan)	36502A33NJTDG (TE Connectivity)	CW201212-33NJ (Bourns)	AISC-0805-R033J-T (Abracon)
Inductance	33 nH	33 nH	33 nH	33 nH
Tolerance	±5%	±5%	±5%	±5%
Current Rating (Amps)	500 mA	500 mA	500 mA	500 mA
DC Resistance (DCR)	270mOhm Max	270mOhm Max	150mOhm	270mOhm Max
Q @ 500MHz	60	60	60	60
Self Resonant Frequency	2.05GHz	2.05GHz	2.4GHz	2.0GHz
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	Nonstandard	0805 (2015 Metric)	0805 (2012 Metric)	0805 (2012 Metric)
Size / Dimension	0.090" L x 0.068" W (2.29mm x 1.73mm)	0.090" L x 0.068" W (2.29mm x 1.73mm)	0.083" L x 0.059" W (2.10mm x 1.50mm)	0.090" L x 0.068" W (2.29mm x 1.73mm)
Height - Seated (Max)	0.060" (1.52mm)	0.060" (1.52mm)	0.059" (1.50mm)	0.061" (1.55mm)
Shielding	Unshielded	Unshielded	Unshielded	Unshielded
Core Material	Ceramic	Ceramic	Ceramic	Ceramic
Product Status	Obsolete	Active	Active	Active
RoHS Status	Non-compliant	Non-compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

36502A33NJTDG (TE Connectivity Passive Product) is the primary direct equivalent. This part maintains identical electrical specifications, physical dimensions, and self-resonant frequency. TE Connectivity's 3650 Sigma Inductor series part carries AEC-Q200 automotive qualification, indicating enhanced reliability testing. Product status is active with 3135 units in stock, ensuring supply continuity. RoHS non-compliance matches the original part specification.

CW201212-33NJ (Bourns Inc.) provides superior DC resistance performance at 150mOhm compared to the 270mOhm maximum specification, resulting in lower power dissipation. Physical dimensions are slightly reduced (0.083" L x 0.059" W versus 0.090" L x 0.068" W), which may require PCB layout verification for footprint compatibility. This part achieves ROHS3 compliance and maintains active product status with 6926 units available. Self-resonant frequency is elevated to 2.4GHz, providing additional frequency margin.

AISC-0805-R033J-T (Abracon LLC) matches the original part's electrical specifications and physical dimensions precisely. This part achieves ROHS3 compliance and maintains active product status with 4339 units in inventory. Self-resonant frequency is specified at 2.0GHz, meeting the minimum threshold. Packaging is available in both Cut Tape and Digi-Reel formats.

Frequently Asked Questions (FAQ)

Q: Can the CW201212-33NJ substitute for the 0805-33NJ despite smaller physical dimensions?

A: Physical dimensions differ (0.083" L x 0.059" W versus 0.090" L x 0.068" W). PCB footprint compatibility must be verified before substitution. The smaller package may fit existing 0805 pads but requires confirmation of clearance and solder joint reliability.

Q: What is the significance of the DC resistance difference between CW201212-33NJ (150mOhm) and the original specification (270mOhm)?

A: Lower DC resistance reduces power dissipation and heat generation at rated current. This represents improved performance and does not create compatibility issues. Applications sensitive to inductor losses benefit from this characteristic.

Q: Are all substitute parts suitable for high-frequency applications above 500MHz?

A: All substitute parts maintain Q factor of 60 at 500MHz and self-resonant frequencies of 2.0GHz or higher, confirming suitability for RF and microwave applications within the specified frequency range.

Q: What is the impact of RoHS compliance differences?

A: The original 0805-33NJ is RoHS non-compliant. CW201212-33NJ and AISC-0805-R033J-T achieve ROHS3 compliance. Selection depends on end-product regulatory requirements. 36502A33NJTDG maintains non-compliance matching the original specification.

Q: How does MSL rating affect handling and storage?

A: All parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard handling procedures apply without special desiccant storage or bake-out requirements.

Q: Which substitute offers the best supply availability?

A: CW201212-33NJ provides the highest inventory level at 6926 units. 36502A33NJTDG offers 3135 units, and AISC-0805-R033J-T provides 4339 units. All three maintain active product status ensuring long-term availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message