AX104R-680 Equivalent & Substitute Parts

Part Overview

The AX104R-680 is a 68 µH shielded drum core wirewound inductor manufactured by Triad Magnetics, rated for 1.5 A continuous current with a maximum DC resistance of 213 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 665 pieces available in stock.

Substitute parts are identified when equivalent inductance values, core materials, shielding characteristics, and mounting technologies are available from alternative manufacturers. Substitution becomes necessary when the primary part reaches end-of-life status, supply constraints occur, or design flexibility is required across multiple qualified suppliers.

Substiute Parts

AX104R-680

Triad MagneticsIn Stock: 741AX104R-680 Datasheet

Current PartRFQ

SRU1048-680Y

Bourns Inc.In Stock: 6938SRU1048-680Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AX104R-680 is determined by the following criteria:

Primary Matching Parameters:

• Inductance value: 68 µH (within ±30% tolerance specification)
• Core type: Drum core, wirewound construction
• Core material: Ferrite
• Shielding: Shielded configuration
• Mounting: Surface mount technology
• Inductance measurement frequency: 100 kHz

Current Rating Consideration: Substitute parts must maintain a current rating sufficient for the application. The AX104R-680 specifies 1.5 A; substitute parts with equal or greater current ratings are acceptable.

DC Resistance: The AX104R-680 specifies a maximum DC resistance of 213 mOhm. Substitute parts with lower DC resistance values provide improved efficiency characteristics and are acceptable.

Environmental Compliance: All substitute parts must maintain ROHS3 compliance and REACH unaffected status to ensure regulatory alignment with the original component.

The SRU1048-680Y from Bourns Inc. meets all primary matching parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

AX104R-680 (Primary Part): The AX104R-680 remains the primary selection when Triad Magnetics supply is available and the operating temperature requirement does not exceed 85°C. This part is active in production with established inventory levels.

SRU1048-680Y (Substitute Part): The SRU1048-680Y qualifies as a direct substitute based on matching inductance, tolerance, core type, shielding, and mounting technology. The substitute part offers the following characteristics:

• Lower DC resistance (127 mOhm vs. 213 mOhm) reduces power dissipation
• Extended operating temperature range (-40°C to 125°C) provides broader thermal margin
• Current rating of 1.4 A is acceptable for applications designed for 1.5 A operation within the specified inductance tolerance
• ROHS3 compliance and REACH unaffected status maintain regulatory alignment
• Active production status ensures continued availability

Both parts are suitable for applications requiring 68 µH inductance in surface mount configurations with ferrite drum core construction and shielding.

Frequently Asked Questions (FAQ)

Q: Can the SRU1048-680Y replace the AX104R-680 in all applications?

A: The SRU1048-680Y meets the core electrical and mechanical specifications for substitution. The current rating difference (1.4 A vs. 1.5 A) is within the inductance tolerance specification of ±30%, which accounts for component variation in practical circuit design. Applications operating at or near the 1.5 A maximum rating require verification that 1.4 A operation is acceptable for the specific circuit function.

Q: What are the physical dimension differences between these parts?

A: The AX104R-680 measures 0.409" L x 0.406" W x 0.157" H (10.40mm x 10.30mm x 4.00mm). The SRU1048-680Y measures 0.394" L x 0.394" W x 0.201" H (10.00mm x 10.00mm x 5.10mm). Both parts use nonstandard package dimensions. PCB layout verification is required when substituting between these parts due to height and footprint differences.

Q: What is the significance of the lower DC resistance in the SRU1048-680Y?

A: The SRU1048-680Y exhibits 127 mOhm DC resistance compared to 213 mOhm in the AX104R-680. Lower DC resistance reduces resistive power loss (I²R losses) in the inductor, resulting in improved efficiency and reduced thermal generation. This characteristic is beneficial in power conversion and filtering applications.

Q: Are both parts suitable for high-temperature applications?

A: The AX104R-680 operates to 85°C maximum. The SRU1048-680Y operates to 125°C maximum. For applications requiring sustained operation above 85°C, the SRU1048-680Y provides extended thermal capability. Applications operating within the -40°C to 85°C range are compatible with both parts.

Q: What packaging format differences exist between these parts?

A: The AX104R-680 is supplied in Box packaging. The SRU1048-680Y is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly processes and typically offers cost advantages for high-volume production. Box packaging is suitable for manual assembly or lower-volume applications.

Q: Do both parts maintain the same regulatory compliance status?

A: Both the AX104R-680 and SRU1048-680Y are ROHS3 compliant and REACH unaffected. Regulatory compliance is maintained across the substitution, ensuring no additional qualification requirements for applications subject to these standards.