AX97-30221 Equivalent & Substitute Parts

Part Overview

The AX97-30221 is a 220 µH unshielded drum core wirewound inductor manufactured by Triad Magnetics, rated for 1 A continuous current with a maximum DC resistance of 640 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 1150 pieces available in new original stock.

Substitute parts are identified when equivalent inductance values, core materials, mounting types, and compliance certifications align with the main part specifications, while accounting for allowable variations in current ratings, DC resistance, and operating temperature ranges.

Substiute Parts

AX97-30221

Triad MagneticsIn Stock: 1246AX97-30221 Datasheet

Current PartRFQ

SRR1005-221K

Bourns Inc.In Stock: 11411SRR1005-221K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AX97-30221 are identified based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 220 µH (exact match required)
• Core material: Ferrite drum core wirewound construction
• Mounting type: Surface mount
• Compliance: ROHS3 compliant

Allowable Variations:

• Current rating: Substitute parts may have lower current ratings if the application does not require the full 1 A capacity
• DC resistance: Substitute parts may have higher DCR values within acceptable circuit performance limits
• Shielding: Shielded variants are acceptable substitutes for unshielded designs in applications where EMI isolation is beneficial
• Operating temperature: Extended temperature ranges are acceptable substitutes
• Inductance tolerance: Tighter tolerances (±10%) are acceptable substitutes for ±20% tolerance

The SRR1005-221K from Bourns Inc. qualifies as a substitute based on matching inductance, core type, mounting configuration, and compliance status, despite variations in current rating, DC resistance, and shielding characteristics.

Parameter Comparison

Engineering Selection Recommendations

AX97-30221 Selection Criteria:

• Applications requiring 1 A continuous current capacity
• Designs utilizing unshielded inductor configurations
• Operating environments within -40°C to 85°C range
• ROHS3 compliance requirement
• Box packaging for lower-volume or prototype applications

SRR1005-221K Selection Criteria:

• Applications with current requirements up to 450 mA
• Designs benefiting from shielded inductor construction for EMI reduction
• Operating environments extending to 125°C
• ROHS3 compliance requirement
• Tape & Reel packaging for high-volume production
• Tighter inductance tolerance (±10%) for precision circuit requirements

Both parts maintain active production status and ROHS3 compliance. Selection between these parts depends on specific current requirements, thermal environment, shielding needs, and packaging format for manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can the SRR1005-221K replace the AX97-30221 in all applications?

A: The SRR1005-221K is a functional substitute only for applications where the current requirement does not exceed 450 mA. The AX97-30221 is rated for 1 A continuous current. If your circuit requires the full 1 A capacity, the SRR1005-221K is not suitable.

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

A: The AX97-30221 is unshielded, while the SRR1005-221K is shielded. Shielding reduces electromagnetic interference emission and susceptibility. In applications sensitive to EMI, the shielded SRR1005-221K may provide superior performance. In applications where shielding is not required, both designs are functionally equivalent for inductance and core characteristics.

Q: How do the DC resistance values affect substitution?

A: The AX97-30221 has a maximum DCR of 640 mOhm, while the SRR1005-221K has a maximum DCR of 800 mOhm. Higher DC resistance increases power dissipation and heat generation. For applications sensitive to resistive losses, verify that the 800 mOhm maximum of the substitute part remains within acceptable circuit performance limits.

Q: Are the packaging formats interchangeable?

A: No. The AX97-30221 is supplied in Box packaging, while the SRR1005-221K is supplied in Tape & Reel (TR) format. These packaging formats serve different manufacturing processes. Box packaging is typical for lower-volume or prototype applications, while Tape & Reel is standard for automated assembly lines. Packaging selection depends on your production methodology.

Q: What does the inductance tolerance difference mean for circuit design?

A: The AX97-30221 has ±20% tolerance, while the SRR1005-221K has ±10% tolerance. Tighter tolerance means more consistent inductance values across production batches. For precision circuits requiring stable inductance values, the SRR1005-221K provides better consistency. For general applications, both tolerances are acceptable.

Q: Can I use the SRR1005-221K in a high-temperature application?

A: The SRR1005-221K operates to 125°C, compared to the AX97-30221 maximum of 85°C. If your application requires operation above 85°C, the SRR1005-221K is suitable. Both parts maintain ROHS3 compliance across their respective temperature ranges.