AX104R-4R7 Equivalent & Substitute Parts

Part Overview

The AX104R-4R7 is a 4.7 µH shielded drum core wirewound inductor manufactured by Triad Magnetics, designed for surface mount applications requiring 6 A current handling capability. This component is classified as Active product status with full RoHS3 compliance. Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting application requirements for inductance value, current rating, and thermal operating range.

Substiute Parts

AX104R-4R7

Triad MagneticsIn Stock: 919AX104R-4R7 Datasheet

Current PartRFQ

SRU1048-4R7Y

Bourns Inc.In Stock: 1695SRU1048-4R7Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AX104R-4R7 is determined by the following criteria:

Primary Electrical Parameters:

• Inductance value must equal 4.7 µH within the ±30% tolerance band
• Core material must be ferrite to maintain electromagnetic characteristics
• Shielding configuration must be shielded to preserve EMI performance

Current Handling Requirements:

• Current rating must be sufficient for the application; the AX104R-4R7 specifies 6 A
• DC resistance must not exceed 13 mOhm to maintain thermal and efficiency specifications

Physical and Environmental Compatibility:

• Mounting type must be Surface Mount (SMD)
• Operating temperature range must encompass the application environment
• Package classification must be compatible with assembly processes

Compliance Requirements:

• RoHS3 compliance is mandatory for equivalent substitution
• REACH status must be unaffected or compliant

The SRU1048-4R7Y from Bourns Inc. meets these substitution criteria with matching inductance (4.7 µH), ferrite core construction, shielded configuration, and RoHS3 compliance. The substitute part exhibits lower DC resistance (9.5 mOhm versus 13 mOhm maximum) and operates across an extended temperature range (-40°C to 125°C versus -40°C to 85°C).

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (AX104R-4R7): The AX104R-4R7 is recommended when the application requires the full 6 A current rating and operates within the -40°C to 85°C temperature envelope. This part maintains Active product status with established supply chain availability (848 pcs in stock) and full RoHS3 compliance.

Substitute Part Selection (SRU1048-4R7Y): The SRU1048-4R7Y is suitable for applications where current demand does not exceed 5.5 A and where extended thermal operating range (-40°C to 125°C) provides design margin. The lower DC resistance (9.5 mOhm) reduces power dissipation compared to the primary part. This substitute is Active status with higher inventory availability (1613 pcs in stock) and maintains RoHS3 compliance.

Selection Constraints:

• If application current requirement exceeds 5.5 A, the SRU1048-4R7Y cannot be substituted
• Both parts are ROHS3 compliant and REACH unaffected, supporting equivalent regulatory qualification
• Physical dimensions differ slightly; PCB layout and thermal management design must accommodate the substitute's 5.10 mm seated height versus the primary part's 4.00 mm height

Frequently Asked Questions (FAQ)

Q: Can the SRU1048-4R7Y replace the AX104R-4R7 in all applications?

A: No. The SRU1048-4R7Y has a maximum current rating of 5.5 A compared to the AX104R-4R7's 6 A rating. Substitution is valid only when the application current requirement does not exceed 5.5 A. If the circuit demands the full 6 A capability, the primary part must be used.

Q: What is the impact of the different DC resistance values?

A: The SRU1048-4R7Y exhibits 9.5 mOhm DC resistance versus the AX104R-4R7's 13 mOhm maximum. Lower resistance reduces I²R power dissipation and heat generation. This is advantageous for thermal management but does not affect substitution eligibility when current requirements are met.

Q: Are there physical compatibility issues between these parts?

A: Yes. The SRU1048-4R7Y has a maximum seated height of 5.10 mm compared to the AX104R-4R7's 4.00 mm. PCB layout, component clearance, and thermal design must be verified to accommodate the taller substitute package. Horizontal dimensions are similar (10.00 mm versus 10.40 mm × 10.30 mm).

Q: Do both parts meet the same compliance standards?

A: Yes. Both the AX104R-4R7 and SRU1048-4R7Y are ROHS3 compliant and REACH unaffected. They carry identical ECCN classification (EAR99) and support equivalent regulatory requirements for industrial and commercial applications.

Q: What is the significance of the extended temperature range in the SRU1048-4R7Y?

A: The SRU1048-4R7Y operates from -40°C to 125°C, extending 40°C above the AX104R-4R7's upper limit of 85°C. This extended range provides thermal margin for applications in elevated ambient conditions or high-power dissipation environments, but does not affect substitution when the application operates within the primary part's -40°C to 85°C range.

Q: How do the inductance tolerance specifications compare?

A: Both parts specify ±30% inductance tolerance at 100 kHz test frequency. This identical tolerance ensures equivalent circuit performance and substitution validity from an inductance accuracy perspective.