AX97-101R0 Equivalent & Substitute Parts

Part Overview

The AX97-101R0 is a 1 µH unshielded drum core wirewound inductor manufactured by Triad Magnetics, rated for 2.9 A continuous current with a maximum DC resistance of 30 mOhm. This surface mount component operates across the temperature range of -40°C to 85°C and is specified at 100 kHz inductance frequency. The part is currently active in production with ROHS3 compliance and is suitable for applications requiring compact, fixed inductance filtering and energy storage in power conversion circuits.

Equivalent and substitute parts are identified to address inventory availability, extended temperature range requirements, or alternative packaging configurations while maintaining core electrical performance within acceptable tolerances.

Substiute Parts

AX97-101R0

Triad MagneticsIn Stock: 1053AX97-101R0 Datasheet

Current PartRFQ

SRR6603-1R0ML

Bourns Inc.In Stock: 14013SRR6603-1R0ML Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AX97-101R0 is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Inductance value must equal 1 µH at 100 kHz test frequency
• Current rating must meet or exceed 2.9 A
• DC resistance must not exceed 30 mOhm maximum
• Tolerance specification ±20% is acceptable

Mechanical & Environmental Criteria:

• Surface mount package configuration required
• Ferrite drum core construction
• Operating temperature range must encompass or extend the -40°C to 85°C specification
• RoHS3 compliance mandatory

Packaging Considerations:

• Original packaging (Bulk or Tape & Reel) does not affect electrical substitution but may impact procurement logistics

The SRR6603-1R0ML from Bourns Inc. qualifies as an equivalent substitute based on matching inductance, exceeding current rating (3 A vs. 2.9 A), and maintaining DC resistance within acceptable limits (40 mOhm vs. 30 mOhm maximum). Extended temperature range (-55°C to 125°C) provides additional operational margin.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (AX97-101R0): Select the AX97-101R0 when the unshielded configuration is required for specific circuit topology or when the lower DC resistance specification (30 mOhm maximum) is critical for thermal performance. This part is active in production with confirmed inventory of 1,025 pieces and maintains ROHS3 compliance.

Substitute Selection (SRR6603-1R0ML): The SRR6603-1R0ML from Bourns Inc. is electrically and mechanically compatible for direct substitution. This part offers:

• Higher current rating (3 A vs. 2.9 A) providing operational margin
• Extended operating temperature range (-55°C to 125°C) for applications requiring wider thermal performance
• Shielded construction reducing electromagnetic interference in sensitive circuits
• Higher inventory availability (13,969 pieces)
• ROHS3 compliance and REACH unaffected status

The 10 mOhm increase in maximum DC resistance (40 mOhm vs. 30 mOhm) is within acceptable tolerance for most power conversion applications and does not preclude substitution.

Both parts are active products with confirmed supply chain status and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the SRR6603-1R0ML directly replace the AX97-101R0 in existing designs?

A: Yes. Both parts share identical inductance (1 µH), tolerance (±20%), core material (ferrite), and mounting type (surface mount). The substitute part exceeds the current rating requirement and operates across an extended temperature range. The primary difference is shielding (shielded vs. unshielded) and DC resistance specification (40 mOhm vs. 30 mOhm maximum). Verify that the shielded configuration does not conflict with circuit layout or EMI requirements.

Q: What is the impact of the higher DC resistance in the substitute part?

A: The SRR6603-1R0ML specifies 40 mOhm maximum DC resistance compared to 30 mOhm for the AX97-101R0. This 10 mOhm difference results in proportionally higher resistive losses during current conduction. For a 2.9 A load, the additional power dissipation is approximately 0.25 mW. This is negligible in most applications but should be evaluated in thermally constrained designs or high-frequency switching circuits where inductor losses directly impact efficiency.

Q: Does the shielded construction of the substitute affect circuit performance?

A: Shielding in the SRR6603-1R0ML reduces radiated electromagnetic interference and improves immunity to external magnetic fields. In most applications, this is beneficial. However, shielded inductors exhibit slightly different frequency response characteristics and may have different parasitic capacitance. Verify compatibility in circuits sensitive to high-frequency behavior or where unshielded operation is explicitly required for impedance matching.

Q: Are there physical dimension differences between these parts?

A: Yes. The AX97-101R0 measures 0.287" L × 0.188" W × 0.127" H (7.30mm × 4.78mm × 3.23mm). The SRR6603-1R0ML measures 0.260" L × 0.173" W × 0.118" H (6.60mm × 4.40mm × 3.00mm). The substitute is slightly smaller in all dimensions. Verify that PCB layout and component placement accommodate the smaller footprint, particularly in high-density designs.

Q: What packaging formats are available for each part?

A: The AX97-101R0 is supplied in Bulk packaging. The SRR6603-1R0ML is supplied in Tape & Reel (TR) format. Bulk packaging is suitable for prototype and low-volume assembly. Tape & Reel format is optimized for automated pick-and-place assembly in production environments. Select based on manufacturing process requirements.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the AX97-101R0 and SRR6603-1R0ML are ROHS3 compliant and REACH unaffected. Both carry EAR99 export classification. Regulatory compliance is equivalent between the two parts.