AX97-30330 Equivalent & Substitute Parts Reference

Part Overview

The AX97-30330 is a 33 µH unshielded drum core wirewound inductor manufactured by Triad Magnetics, rated for 2.5 A continuous current with a maximum DC resistance of 110mOhm. 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 1018 units in stock.

Substitute parts are identified when equivalent inductance values, compatible current ratings, and matching core materials are available from alternative manufacturers. Substitution becomes necessary due to supply constraints, lead time requirements, or design optimization needs while maintaining electrical and mechanical compatibility.

Substiute Parts

AX97-30330

Triad MagneticsIn Stock: 1092AX97-30330 Datasheet

Current PartRFQ

SRR1005-330Y

Bourns Inc.In Stock: 4571SRR1005-330Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AX97-30330 are identified based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 33 µH (exact match required)
• Core material: Ferrite drum core wirewound construction
• Mounting type: Surface mount technology
• Package type: Nonstandard SMD form factor

Secondary Compatibility Factors:

• Current rating: Substitute must support minimum 2.5 A or higher
• DC resistance: Substitute DCR must not exceed application thermal limits
• Operating temperature: Substitute range must encompass or exceed -40°C to 85°C
• RoHS compliance: ROHS3 compliance required for regulatory alignment

The SRR1005-330Y from Bourns Inc. meets the primary inductance and core material requirements. However, substitution feasibility depends on application-specific current and resistance tolerances, as detailed in the parameter comparison section.

Parameter Comparison

Engineering Selection Recommendations

AX97-30330 (Triad Magnetics) is the primary selection for applications requiring:

• Continuous current operation at 2.5 A or higher
• Lower DC resistance (110 mOhm maximum) to minimize thermal dissipation
• Unshielded configuration for applications without EMI constraints
• Operating temperatures up to 85°C

SRR1005-330Y (Bourns Inc.) is suitable only for applications where:

• Maximum continuous current requirement does not exceed 1.2 A
• Higher DC resistance (160 mOhm) is acceptable within thermal budget
• Shielded construction provides EMI containment benefits
• Extended operating temperature range to 125°C is required
• Tighter inductance tolerance (±15%) is specified

Both parts are ROHS3 compliant and active in production. Selection must be based on application current requirements, as the SRR1005-330Y current rating of 1.2 A is insufficient for designs requiring the full 2.5 A capability of the AX97-30330.

Frequently Asked Questions (FAQ)

Q: Can the SRR1005-330Y directly replace the AX97-30330 in all applications?

A: No. The SRR1005-330Y has a maximum current rating of 1.2 A, while the AX97-30330 is rated for 2.5 A. Direct substitution is only valid for applications operating at or below 1.2 A continuous current. Exceeding this limit will cause the Bourns part to saturate prematurely and may result in component failure.

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

A: The AX97-30330 has a maximum DC resistance of 110 mOhm, while the SRR1005-330Y is rated at 160 mOhm maximum. At equivalent current levels, the higher resistance of the Bourns part generates approximately 45% more resistive heating. This must be evaluated against the thermal design of the application.

Q: Are there dimensional compatibility issues between these parts?

A: Yes. The AX97-30330 measures 0.530" L x 0.370" W x 0.232" H, while the SRR1005-330Y measures 0.500" L x 0.394" W x 0.205" H. Although both are nonstandard SMD packages, the footprint and height differences require verification against PCB layout and clearance requirements before substitution.

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

A: The AX97-30330 is unshielded, while the SRR1005-330Y is shielded. Shielding reduces electromagnetic radiation and susceptibility to external fields. Selection depends on EMI requirements; unshielded parts are typically used in isolated circuits, while shielded parts are preferred in noise-sensitive applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the AX97-30330 and SRR1005-330Y are ROHS3 compliant and REACH unaffected. Both are classified under ECCN EAR99 for export control purposes. Compliance requirements do not differentiate between these parts.

Q: What is the significance of the inductance tolerance difference?

A: The AX97-30330 has ±20% tolerance, while the SRR1005-330Y has ±15% tolerance. The Bourns part provides tighter inductance control, which may be beneficial for applications with strict frequency response or resonance requirements. However, this does not offset the current rating limitation.