AX97-304R7 Equivalent & Substitute Parts

Part Overview

The AX97-304R7 is a 4.7 µH unshielded drum core wirewound inductor manufactured by Triad Magnetics, rated for 6 A continuous current with a maximum DC resistance of 20 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 1170 units in stock.

Substitute parts are identified when equivalent inductance values, core materials, and mounting technologies are available from alternative manufacturers, provided that electrical and mechanical parameters remain within acceptable tolerances for the application.

Substiute Parts

AX97-304R7

Triad MagneticsIn Stock: 1248AX97-304R7 Datasheet

Current PartRFQ

SRR1005-4R7M

Bourns Inc.In Stock: 6342SRR1005-4R7M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute part identification for the AX97-304R7 is based on the following critical parameters:

Matching Parameters:

• Inductance value: 4.7 µH
• Inductance tolerance: ±20%
• Core material: Ferrite
• Core type: Drum core, wirewound
• Mounting type: Surface mount
• RoHS compliance: ROHS3 Compliant

Allowable Variations:

• Current rating: Substitute parts may have different current ratings; however, the substitute must support the application's maximum current requirement or be derated accordingly
• DC resistance: Substitute parts may have different DCR values; circuit design must account for increased losses if DCR is higher
• Shielding: Substitute parts may differ in shielding configuration; circuit layout and EMI requirements determine compatibility
• Operating temperature range: Substitute parts may have extended or different temperature ranges; the substitute must cover the application's operating environment
• Package dimensions: Substitute parts may have different physical dimensions; PCB layout and mechanical constraints must be verified

Parameter Comparison

Engineering Selection Recommendations

AX97-304R7 Selection Criteria:

• Applications requiring 6 A continuous current capacity
• Circuits where unshielded inductor configuration is acceptable
• Operating environments limited to -40°C to 85°C
• Box packaging for lower-volume or prototype applications
• Lower DC resistance requirement (20 mOhm max) to minimize power dissipation

SRR1005-4R7M Selection Criteria:

• Applications with maximum current requirements of 2.5 A or lower
• Circuits requiring shielded inductor configuration for EMI mitigation
• Operating environments requiring extended temperature range up to 125°C
• High-volume production requiring tape and reel packaging
• Applications where higher DC resistance (40 mOhm max) is acceptable

Both parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can SRR1005-4R7M replace AX97-304R7 in a 6 A application?

A: No. The SRR1005-4R7M is rated for 2.5 A continuous current, which is insufficient for applications requiring 6 A. Using this substitute in a 6 A circuit will cause the inductor to exceed its current rating and result in thermal stress and potential failure.

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

A: The AX97-304R7 has 20 mOhm max DCR, while the SRR1005-4R7M has 40 mOhm max DCR. Higher DC resistance increases power dissipation and heat generation. In circuits sensitive to losses, the higher DCR of the substitute must be accounted for in thermal and efficiency calculations.

Q: Are the physical dimensions compatible for PCB layout?

A: The parts have similar but not identical dimensions. AX97-304R7 measures 0.530" L x 0.370" W x 0.232" H, while SRR1005-4R7M measures 0.500" L x 0.394" W x 0.205" H. PCB footprints and mechanical clearances must be verified before substitution.

Q: What is the difference between shielded and unshielded configurations?

A: The AX97-304R7 is unshielded, while the SRR1005-4R7M is shielded. Shielded inductors reduce electromagnetic interference (EMI) radiation but may have slightly different electrical characteristics. Circuit layout and EMI requirements determine which configuration is appropriate.

Q: Can AX97-304R7 operate at temperatures above 85°C?

A: No. The AX97-304R7 is rated for -40°C to 85°C operation. Applications requiring extended temperature range up to 125°C must use the SRR1005-4R7M or equivalent parts with higher temperature ratings.

Q: What packaging differences exist between these parts?

A: AX97-304R7 is supplied in Box packaging, suitable for lower-volume applications. SRR1005-4R7M is supplied in Tape & Reel (TR) packaging, optimized for automated assembly and high-volume production.