AX97-20101 Equivalent & Substitute Parts Reference

Part Overview

The AX97-20101 is a 100 µH unshielded drum core wirewound inductor manufactured by Triad Magnetics, rated for 600 mA continuous current with a maximum DC resistance of 580 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 832 pieces available in stock.

Substitute parts are identified when equivalent inductance values, compatible current ratings, and matching core material specifications are available from alternative manufacturers. Substitution becomes necessary when the primary part reaches end-of-life status, inventory constraints occur, or when design requirements permit tolerance of minor parameter variations within acceptable engineering limits.

Substiute Parts

AX97-20101

Triad MagneticsIn Stock: 935AX97-20101 Datasheet

Current PartRFQ

SRR1005-101K

Bourns Inc.In Stock: 2438SRR1005-101K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AX97-20101 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 100 µH (exact match required)
• Core material: Ferrite drum core wirewound construction
• Mounting type: Surface mount
• Current rating: Minimum 600 mA
• DC resistance: Maximum 580 mOhm or lower
• Regulatory compliance: ROHS3 compliant

Secondary Compatibility Factors:

• Operating temperature range must encompass or exceed -40°C to 85°C
• Tolerance specification must be ±20% or tighter
• Package classification: Nonstandard surface mount

The substitute part SRR1005-101K from Bourns Inc. meets all primary matching criteria with equivalent inductance, ferrite core construction, and surface mount configuration. The substitute demonstrates improved performance characteristics including lower DC resistance (420 mOhm maximum), higher current rating (680 mA), and tighter tolerance (±10%). Operating temperature range extends to 125°C, exceeding the original specification. Both parts maintain ROHS3 compliance and ferrite drum core construction.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (AX97-20101): The AX97-20101 remains the specified component when unshielded inductor characteristics are required for the application circuit design. This part is active in production, ROHS3 compliant, and maintains full regulatory compliance under REACH and EAR99 classifications.

Substitute Part Selection (SRR1005-101K): The SRR1005-101K from Bourns Inc. is electrically and mechanically compatible for applications where the following conditions are acceptable:

• Shielded core construction is compatible with circuit requirements
• Extended operating temperature range to 125°C provides thermal margin
• Lower DC resistance (420 mOhm vs. 580 mOhm) reduces power dissipation
• Higher current saturation rating (900 mA) provides design headroom
• Tighter inductance tolerance (±10% vs. ±20%) improves circuit performance consistency
• Tape & Reel packaging accommodates high-volume manufacturing processes

Both parts maintain identical regulatory status (ROHS3 compliant, REACH unaffected, EAR99 classification) and ferrite core construction. Physical dimensions differ slightly; the SRR1005-101K is marginally larger in height (5.20 mm vs. 3.50 mm seated height).

Frequently Asked Questions (FAQ)

Q: Can the SRR1005-101K directly replace the AX97-20101 in all applications?

A: Electrical substitution is valid when the application circuit tolerates shielded inductor characteristics. The shielded design of the SRR1005-101K reduces electromagnetic interference coupling compared to the unshielded AX97-20101. Physical dimensions differ; verify PCB layout accommodates the 5.20 mm maximum seated height of the substitute versus 3.50 mm of the original part.

Q: What is the significance of the shielding difference?

A: The AX97-20101 is unshielded, allowing magnetic field radiation into surrounding circuit areas. The SRR1005-101K features shielding that contains the magnetic field, reducing EMI effects on adjacent components. For noise-sensitive circuits, the shielded substitute may improve performance. For applications requiring minimal magnetic coupling to external elements, shielding is compatible or beneficial.

Q: Are the inductance values truly equivalent?

A: Both parts specify 100 µH inductance. The AX97-20101 carries ±20% tolerance, while the SRR1005-101K carries ±10% tolerance. At the 100 kHz test frequency specified for the AX97-20101, inductance values remain within the 100 µH specification band for both parts. The tighter tolerance of the substitute improves circuit performance predictability.

Q: What are the packaging implications?

A: The AX97-20101 ships in Box packaging; the SRR1005-101K ships in Tape & Reel format. Box packaging suits low-volume or prototype applications. Tape & Reel packaging is standard for automated assembly processes and high-volume production. Inventory management and procurement processes differ between formats.

Q: Is the higher current rating of the SRR1005-101K a concern?

A: No. The 680 mA rating of the SRR1005-101K exceeds the 600 mA requirement of the AX97-20101. Higher current ratings provide design margin and reduce thermal stress on the component. The lower DC resistance (420 mOhm vs. 580 mOhm) further reduces power dissipation at rated current levels.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the AX97-20101 and SRR1005-101K are ROHS3 compliant, REACH unaffected, and classified under EAR99. Regulatory compliance is equivalent for both parts in all jurisdictions where these standards apply.