AX97-10221 Equivalent & Substitute Parts

Part Overview

The AX97-10221 is a 220 µH unshielded drum core wirewound inductor manufactured by Triad Magnetics, rated for 180 mA continuous current with a maximum DC resistance of 4.47 Ohm. This surface mount component operates across the temperature range of -40°C to 85°C and is specified for 100 kHz inductance testing. The part is currently in active production status with ROHS3 compliance and is available in nonstandard SMD packaging.

Substitute parts are identified when equivalent inductance values, current ratings, and core materials are available from alternative manufacturers, particularly when improved electrical characteristics or different packaging formats are required for specific application requirements.

Substiute Parts

AX97-10221

Triad MagneticsIn Stock: 902AX97-10221 Datasheet

Current PartRFQ

SRR6603-221ML

Bourns Inc.In Stock: 1687SRR6603-221ML Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AX97-10221 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 220 µH (±20% tolerance band)
• Core material: Ferrite drum core construction
• Mounting technology: Surface mount (SMD)
• Test frequency: 100 kHz

Secondary Compatibility Factors:

• Current rating: Minimum 180 mA (equal or higher acceptable)
• DC resistance: Lower values preferred for reduced losses
• Operating temperature range: Must encompass or exceed -40°C to 85°C
• Regulatory compliance: ROHS3 and REACH status alignment

The SRR6603-221ML from Bourns Inc. qualifies as a substitute based on matching inductance (220 µH), identical tolerance (±20%), ferrite drum core construction, and surface mount packaging. The substitute demonstrates superior electrical characteristics with higher current rating (220 mA vs. 180 mA) and significantly lower DC resistance (770 mOhm vs. 4.47 Ohm), while maintaining full regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

AX97-10221 Selection Criteria: The AX97-10221 remains the primary choice for applications requiring unshielded inductor construction with the specified thermal operating window of -40°C to 85°C. This part is actively produced and maintains full ROHS3 and REACH compliance. Box packaging is suitable for lower-volume applications or manual assembly processes.

SRR6603-221ML Selection Criteria: The SRR6603-221ML from Bourns Inc. is selected when the following conditions apply: shielded construction is required to minimize electromagnetic interference, higher current capacity (220 mA) is needed, lower DC resistance (770 mOhm) is critical for reducing power dissipation, extended temperature operation to -55°C or 125°C is required, or tape and reel packaging is necessary for automated assembly. This part maintains active production status with identical regulatory compliance.

Both parts are ROHS3 compliant and REACH unaffected, ensuring compatibility with current environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SRR6603-221ML directly replace AX97-10221 in all applications?

A: Direct substitution is possible when the application does not require unshielded construction. The SRR6603-221ML provides shielded operation, which may alter electromagnetic coupling characteristics in sensitive circuits. Verify that shielding does not negatively impact circuit performance before implementation.

Q: What is the primary electrical difference between these inductors?

A: The DC resistance differs significantly: AX97-10221 specifies 4.47 Ohm maximum, while SRR6603-221ML specifies 770 mOhm maximum. This 5.8x reduction in resistance results in lower power dissipation and improved efficiency in current-carrying applications. Both maintain identical 220 µH inductance and ±20% tolerance.

Q: Are the physical dimensions compatible?

A: Physical dimensions differ slightly. AX97-10221 measures 0.287" L x 0.188" W x 0.127" H (7.30mm x 4.78mm x 3.23mm), while SRR6603-221ML measures 0.260" L x 0.173" W x 0.118" H (6.60mm x 4.40mm x 3.00mm). Verify PCB layout and component placement clearances before substitution.

Q: What is the current saturation specification for SRR6603-221ML?

A: The SRR6603-221ML specifies a saturation current (Isat) of 100 mA. This parameter is not provided for the AX97-10221. Saturation current defines the point at which inductance begins to degrade under excessive current conditions.

Q: Which part is recommended for automated assembly?

A: The SRR6603-221ML is supplied in tape and reel (TR) packaging, which is standard for automated pick-and-place assembly. The AX97-10221 is supplied in box packaging, which is suitable for manual assembly or lower-volume production.

Q: Do both parts meet current environmental regulations?

A: Yes. Both AX97-10221 and SRR6603-221ML are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance restrictions for electronic components.

Q: What is the quality factor (Q) specification?

A: The SRR6603-221ML specifies Q @ 100 kHz as 40. The Q specification is not provided for AX97-10221. Higher Q values indicate lower losses and better efficiency at the specified frequency.

Q: Can these inductors operate at temperatures below -40°C?

A: The AX97-10221 is rated for -40°C minimum. The SRR6603-221ML extends to -55°C minimum. For applications requiring operation below -40°C, the SRR6603-221ML is the appropriate selection.