AX104R-330 Equivalent & Substitute Parts

Part Overview

The AX104R-330 is a 33 µH shielded drum core wirewound inductor manufactured by Triad Magnetics, rated for 2.3 A continuous current with a maximum DC resistance of 93 mOhm. This surface mount component operates across the temperature range of -40°C to 85°C and is ROHS3 compliant. The part is currently active in production with 691 pieces available in stock.

Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting mechanical and environmental requirements for the application.

Key Parameters

Parameter	Value	Unit
Inductance	33	µH
Inductance Tolerance	±30%	-
Current Rating	2.3	A
DC Resistance (DCR)	93	mOhm Max
Core Material	Ferrite	-
Shielding	Shielded	-
Mounting Type	Surface Mount	-
Operating Temperature Range	-40°C to 85°C	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the AX104R-330 is determined by the following criteria:

Primary Electrical Parameters:

Inductance value of 33 µH within ±30% tolerance
Current rating equal to or greater than 2.3 A
DC resistance not exceeding 93 mOhm
Ferrite core material with shielding

Mechanical Parameters:

Surface mount package configuration
Nonstandard case size compatible with 10.40mm x 10.30mm footprint tolerance
Height compatibility within application constraints

Environmental & Compliance:

Operating temperature range minimum of -40°C to 85°C
ROHS3 compliance
REACH unaffected status

The SRU1048-330Y from Bourns Inc. qualifies as a substitute based on matching inductance value, ferrite shielded drum core construction, surface mount configuration, and compliance certifications. Electrical performance differences are documented in the parameter comparison table.

Parameter Comparison

Parameter	AX104R-330 (Triad Magnetics)	SRU1048-330Y (Bourns Inc.)	Compatibility Notes
Inductance	33 µH	33 µH	Identical
Inductance Tolerance	±30%	±30%	Identical
Current Rating	2.3 A	2.1 A	Substitute rated 0.2 A lower
DC Resistance (DCR)	93 mOhm Max	63 mOhm	Substitute has lower DCR
Core Material	Ferrite	Ferrite	Identical
Shielding	Shielded	Shielded	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Operating Temperature Range	-40°C to 85°C	-40°C to 125°C	Substitute has extended upper limit
Size / Dimension	10.40mm L x 10.30mm W	10.00mm L x 10.00mm W	Substitute is slightly smaller
Height - Seated (Max)	4.00mm	5.10mm	Substitute is 1.10mm taller
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
REACH Status	REACH Unaffected	REACH Unaffected	Identical

Engineering Selection Recommendations

AX104R-330 Selection Criteria:

Applications requiring maximum current rating of 2.3 A
Designs with height constraints limited to 4.00mm maximum
Footprint requirements matching 10.40mm x 10.30mm dimensions
Operating temperature range not exceeding 85°C
ROHS3 and REACH compliance required

SRU1048-330Y Selection Criteria:

Applications with current requirements up to 2.1 A
Designs benefiting from lower DC resistance (63 mOhm vs. 93 mOhm)
Systems requiring extended operating temperature range to 125°C
Footprint tolerance for 10.00mm x 10.00mm dimensions
Applications where additional 1.10mm height is acceptable
ROHS3 and REACH compliance required

Both parts maintain active production status and are ROHS3 compliant. Selection between these components depends on specific application current requirements, thermal environment, and physical space constraints.

Frequently Asked Questions (FAQ)

Q: Can SRU1048-330Y replace AX104R-330 in all applications?

A: Substitution is valid only when application current requirements do not exceed 2.1 A. The AX104R-330 is rated for 2.3 A; applications requiring this full current rating must use the original part. Additionally, the SRU1048-330Y has a maximum seated height of 5.10mm compared to 4.00mm for the AX104R-330, requiring verification of available board space.

Q: What are the key electrical differences between these parts?

A: Both parts provide 33 µH inductance with ±30% tolerance. The SRU1048-330Y has lower DC resistance (63 mOhm vs. 93 mOhm maximum), resulting in reduced power dissipation. The SRU1048-330Y also specifies saturation current of 1.7 A and self-resonant frequency of 10 MHz, parameters not provided for the AX104R-330.

Q: Are there packaging differences between these inductors?

A: The AX104R-330 is supplied in Box packaging, while the SRU1048-330Y is available in Cut Tape (CT) and Digi-Reel® packaging. Both are surface mount components with nonstandard case sizes. Footprint dimensions differ slightly: AX104R-330 is 10.40mm x 10.30mm with 4.00mm height, while SRU1048-330Y is 10.00mm x 10.00mm with 5.10mm height.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the AX104R-330 and SRU1048-330Y are ROHS3 compliant and REACH unaffected. Both carry EAR99 ECCN classification.

Q: What is the operating temperature difference?

A: The AX104R-330 operates from -40°C to 85°C, while the SRU1048-330Y extends to -40°C to 125°C. Applications requiring operation above 85°C must use the SRU1048-330Y or identify an alternative part.

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