AX104R-2R5 Equivalent & Substitute Parts

Part Overview

The AX104R-2R5 is a 2.5 µH shielded drum core wirewound inductor manufactured by Triad Magnetics, rated for 6.1 A continuous current with a maximum DC resistance of 10 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 808 pieces available in stock.

Substitute parts are identified when equivalent electrical performance can be achieved within the allowed parameter tolerances for this inductor category, particularly when the main part becomes unavailable or when alternative packaging or thermal specifications better suit specific application requirements.

Substiute Parts

AX104R-2R5

Triad MagneticsIn Stock: 884AX104R-2R5 Datasheet

Current PartRFQ

SRU1048-2R2Y

Bourns Inc.In Stock: 7921SRU1048-2R2Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AX104R-2R5 is determined by the following criteria:

Core Electrical Parameters:

• Inductance value within ±30% tolerance band (2.5 µH nominal allows 1.75 µH to 3.25 µH range)
• Current rating equal to or greater than 6.1 A
• DC resistance at or below 10 mOhm maximum
• Ferrite core material with shielding
• Surface mount configuration

Environmental & Compliance Parameters:

• Operating temperature range must encompass or exceed -40°C to 85°C
• ROHS3 compliance required
• REACH unaffected status

The SRU1048-2R2Y from Bourns Inc. qualifies as a substitute based on inductance within tolerance (2.2 µH falls within the ±30% band), current rating exceeding the requirement (6.5 A vs. 6.1 A), and DC resistance superior to specification (5.3 mOhm vs. 10 mOhm maximum). Both parts share identical core material, shielding, mounting type, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (AX104R-2R5): The AX104R-2R5 remains the primary choice when the specified inductance value of 2.5 µH is critical to circuit design and thermal operating range of -40°C to 85°C is sufficient. This part is active in production with substantial inventory availability (808 pieces in stock) and meets all ROHS3 and REACH compliance requirements.

Substitute Selection (SRU1048-2R2Y): The SRU1048-2R2Y from Bourns Inc. is electrically qualified as a substitute when:

• The application can tolerate inductance variation from 2.5 µH to 2.2 µH within the ±30% tolerance specification
• Lower DC resistance (5.3 mOhm vs. 10 mOhm) provides thermal and efficiency benefits
• Extended operating temperature range (-40°C to 125°C) is advantageous for the application
• Tape & Reel packaging format is compatible with assembly processes
• Physical footprint variation (10.00mm x 10.00mm vs. 10.40mm x 10.30mm, height 5.10mm vs. 4.00mm) does not conflict with PCB layout constraints

Both parts maintain identical compliance status and core material specifications. Selection between these parts depends on inductance tolerance requirements, thermal environment, and physical space availability on the printed circuit board.

Frequently Asked Questions (FAQ)

Q: Can the SRU1048-2R2Y directly replace the AX104R-2R5 in all applications?

A: The SRU1048-2R2Y is electrically compatible within the ±30% inductance tolerance specification. However, physical dimensions differ: the substitute is 0.40mm smaller in length and width but 1.10mm taller in seated height. PCB layout must accommodate these dimensional changes. Verify that the increased height does not create clearance conflicts with adjacent components or enclosure constraints.

Q: What is the inductance tolerance band for the AX104R-2R5?

A: With ±30% tolerance on the 2.5 µH nominal value, the acceptable inductance range is 1.75 µH to 3.25 µH. The SRU1048-2R2Y at 2.2 µH falls within this band and is therefore electrically compatible.

Q: Does the lower DC resistance of the SRU1048-2R2Y affect circuit performance?

A: Lower DC resistance (5.3 mOhm vs. 10 mOhm maximum) reduces resistive losses and heat generation. This is a performance improvement that does not negatively impact circuit function. Applications sensitive to inductor losses will benefit from the substitute's superior DC resistance specification.

Q: Are there packaging considerations when switching from AX104R-2R5 to SRU1048-2R2Y?

A: The AX104R-2R5 is supplied in Box packaging, while the SRU1048-2R2Y is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly processes. Verify that your assembly equipment and processes are compatible with Tape & Reel format before selecting the substitute.

Q: What is the temperature operating range difference between these parts?

A: The AX104R-2R5 operates from -40°C to 85°C, while the SRU1048-2R2Y extends to -40°C to 125°C. If your application requires operation above 85°C, the substitute provides additional thermal margin. Both parts meet the minimum -40°C lower limit.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the AX104R-2R5 and SRU1048-2R2Y are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.