AX97-20220 Equivalent & Substitute Parts Reference

Part Overview

The AX97-20220 is a 22 µH unshielded drum core wirewound inductor manufactured by Triad Magnetics, designed for surface mount applications. This component is rated for 1.3 A continuous current with a maximum DC resistance of 150 mOhm and operates across the temperature range of -40°C to 85°C. The part maintains Active product status with 767 units currently in stock.

Substitute parts are identified when equivalent inductance values, current ratings, and core materials align within acceptable tolerance ranges, enabling direct functional replacement in circuit designs while accounting for differences in shielding, DC resistance, and thermal specifications.

Substiute Parts

AX97-20220

Triad MagneticsIn Stock: 786AX97-20220 Datasheet

Current PartRFQ

SRR1005-220Y

Bourns Inc.In Stock: 2439SRR1005-220Y Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AX97-20220 are identified based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 22 µH (exact match required)
• Core type: Drum core, wirewound ferrite construction
• Mounting type: Surface mount (SMD)
• Current rating: Minimum 1.3 A or higher
• DC resistance: Equal to or lower than 150 mOhm
• Regulatory compliance: ROHS3 compliant

Secondary Considerations:

• Inductance tolerance (±15% to ±20% acceptable)
• Operating temperature range (minimum -40°C to 85°C coverage)
• Package form factor compatibility for PCB layout

The substitute SRR1005-220Y from Bourns Inc. meets all primary matching criteria with improved electrical characteristics, including lower DC resistance (100 mOhm max), higher current rating (1.4 A), and shielded construction for EMI reduction.

Parameter Comparison

Engineering Selection Recommendations

AX97-20220 Selection Criteria:

• Applications requiring unshielded inductor construction
• Space-constrained designs where maximum height of 3.50mm is mandatory
• Operating environments limited to 85°C maximum temperature
• Designs tolerating ±20% inductance tolerance
• Applications where higher DC resistance (150 mOhm) is acceptable

SRR1005-220Y Selection Criteria:

• Applications benefiting from shielded construction to reduce electromagnetic interference
• Designs requiring lower DC resistance for reduced power dissipation
• Operating environments extending to 125°C
• Applications requiring tighter inductance tolerance (±15%)
• Designs with PCB clearance accommodating 5.20mm maximum height
• Higher current margin applications (1.4 A vs. 1.3 A)

Both parts maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can SRR1005-220Y directly replace AX97-20220 in all applications?

A: Direct replacement is functionally valid for inductance and current rating. However, verify PCB layout clearance for the increased height (5.20mm vs. 3.50mm). The shielded construction of SRR1005-220Y may alter EMI characteristics in sensitive circuits; evaluate circuit performance if EMI behavior is critical.

Q: What is the impact of the 50 mOhm DC resistance difference?

A: Lower DC resistance in SRR1005-220Y (100 mOhm vs. 150 mOhm) reduces resistive losses and heat generation. For a 1.3 A load, this represents approximately 0.0325 W lower power dissipation, beneficial for thermal management in compact designs.

Q: Are the dimensional differences significant for PCB layout?

A: Length and width differences are minimal (0.76mm and 0.60mm respectively). The height difference of 1.70mm is the primary consideration; verify clearance above the component for solder reflow and assembly processes.

Q: Does shielding in SRR1005-220Y affect circuit performance?

A: Shielded construction reduces radiated EMI and susceptibility to external magnetic fields. In noise-sensitive applications, this improves signal integrity. In applications where the unshielded design was intentional, evaluate whether shielding introduces undesired coupling effects.

Q: What is the inductance tolerance impact on circuit design?

A: AX97-20220 tolerance of ±20% produces a range of 17.6 µH to 26.4 µH. SRR1005-220Y tolerance of ±15% produces a range of 18.7 µH to 25.3 µH. For frequency-dependent circuits, verify that both tolerance ranges remain within acceptable performance bands.

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

A: AX97-20220 operates to 85°C maximum. SRR1005-220Y extends to 125°C. For applications approaching or exceeding 85°C ambient, SRR1005-220Y provides thermal margin. Verify derating curves if available for sustained operation near maximum ratings.

Q: What packaging format differences exist?

A: AX97-20220 is supplied in Box packaging. SRR1005-220Y is supplied in Tape & Reel (TR) format. TR packaging is standard for automated assembly; Box packaging may require manual handling. Confirm procurement and assembly process compatibility.