AX97-30331 Equivalent & Substitute Parts Reference

Part Overview

The AX97-30331 is a 330 µH unshielded drum core wirewound inductor manufactured by Triad Magnetics, rated for 800 mA continuous current with a maximum DC resistance of 1 Ohm. 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 891 pieces available in stock.

Substitute parts are identified when equivalent inductance values, compatible mounting types, and acceptable operating parameters align with application requirements. The primary substitute identified for this component is the SRR1005-331K from Bourns Inc., which shares the same inductance specification but differs in shielding configuration, current rating, and tolerance characteristics.

Substiute Parts

AX97-30331

Triad MagneticsIn Stock: 909AX97-30331 Datasheet

Current PartRFQ

SRR1005-331K

Bourns Inc.In Stock: 1860SRR1005-331K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AX97-30331 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 330 µH (exact match required)
• Mounting type: Surface Mount (SMD)
• Core material: Ferrite drum core, wirewound construction
• Compliance: ROHS3 and REACH compliance status

Secondary Compatibility Factors:

• Current rating must meet or exceed application requirements
• DC resistance must be within acceptable circuit tolerance
• Operating temperature range must cover intended application environment
• Package dimensions must fit PCB layout constraints

The SRR1005-331K qualifies as a substitute based on matching inductance, mounting type, core material, and compliance certifications. However, differences exist in current rating (350 mA vs. 800 mA), DC resistance (1.2 Ohm vs. 1.0 Ohm max), shielding configuration (shielded vs. unshielded), and tolerance specification (±10% vs. ±20%).

Parameter Comparison

Engineering Selection Recommendations

AX97-30331 Selection Criteria:

• Applications requiring 800 mA continuous current capacity
• Circuits where unshielded inductor configuration is acceptable or preferred
• Operating environments within -40°C to 85°C range
• Designs tolerating ±20% inductance variation
• ROHS3 and REACH compliance mandatory

SRR1005-331K Selection Criteria:

• Applications with current requirements up to 350 mA
• Circuits benefiting from shielded inductor configuration to reduce electromagnetic interference
• Operating environments extending to 125°C maximum temperature
• Designs requiring tighter inductance tolerance (±10%)
• ROHS3 and REACH compliance mandatory
• Tape & Reel packaging for automated assembly processes

Substitution Constraints: The SRR1005-331K cannot substitute the AX97-30331 in applications requiring current ratings above 350 mA. The higher DC resistance (1.2 Ohm vs. 1.0 Ohm) introduces additional power dissipation that must be evaluated against thermal design margins. The shielded configuration of the SRR1005-331K may alter electromagnetic coupling characteristics in sensitive circuit topologies.

Frequently Asked Questions (FAQ)

Q: Can the SRR1005-331K replace the AX97-30331 in all applications?

A: No. The SRR1005-331K has a maximum current rating of 350 mA, compared to the AX97-30331's 800 mA rating. Substitution is only valid for applications where the actual circuit current does not exceed 350 mA. Additionally, the increased DC resistance (1.2 Ohm vs. 1.0 Ohm) must be evaluated for acceptable power loss in the specific application.

Q: What is the impact of shielding differences between these parts?

A: The AX97-30331 is unshielded, while the SRR1005-331K is shielded. Shielding reduces electromagnetic radiation and susceptibility to external fields. In noise-sensitive circuits, the shielded SRR1005-331K may provide superior performance. In applications where shielding is not required or where unshielded operation is specified, the AX97-30331 remains the appropriate choice.

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

A: The AX97-30331 operates to 85°C maximum, while the SRR1005-331K extends to 125°C. For applications requiring operation above 85°C, only the SRR1005-331K is suitable. For applications within the -40°C to 85°C range, both parts are acceptable from a thermal perspective.

Q: How do tolerance differences affect circuit performance?

A: The AX97-30331 has ±20% tolerance, while the SRR1005-331K has ±10% tolerance. The tighter tolerance of the SRR1005-331K provides more predictable inductance values across production batches. For circuits sensitive to inductance variation, the SRR1005-331K offers superior consistency.

Q: What packaging considerations apply to these parts?

A: The AX97-30331 is supplied in Bulk packaging, while the SRR1005-331K is supplied in Tape & Reel (TR) format. Tape & Reel packaging is optimized for automated pick-and-place assembly, while Bulk packaging is suitable for manual assembly or lower-volume production. Packaging selection depends on manufacturing process requirements.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both the AX97-30331 and SRR1005-331K are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance restrictions for electronic components.