AX97-20470 Equivalent & Substitute Parts

Part Overview

The AX97-20470 is a 47 µH unshielded drum core wirewound inductor manufactured by Triad Magnetics, rated for 800 mA continuous current with a maximum DC resistance of 310mOhm. 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 749 pieces available in stock.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining compatibility with the application's mechanical and thermal requirements.

Substiute Parts

AX97-20470

Triad MagneticsIn Stock: 820AX97-20470 Datasheet

Current PartRFQ

SRR1005-470Y

Bourns Inc.In Stock: 2428SRR1005-470Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AX97-20470 is determined by the following critical parameters:

Inductance Value: The substitute part must provide 47 µH inductance within the tolerance band of the main part (±20%).

Current Rating: The substitute must support at least 800 mA continuous current without saturation or thermal degradation.

DC Resistance: The substitute's maximum DC resistance must not exceed 310mOhm to maintain equivalent power dissipation characteristics.

Core Type and Material: Both the main part and substitute must utilize ferrite drum core wirewound construction to ensure electromagnetic performance consistency.

Mounting Configuration: Surface mount packaging is required for mechanical compatibility with the target PCB assembly process.

Compliance Standards: Both parts must maintain ROHS3 compliance and EAR99 export classification.

The SRR1005-470Y from Bourns Inc. qualifies as a substitute based on these parameters. While the substitute exhibits improved specifications in certain areas (lower DCR, higher current rating, shielded construction), these enhancements do not preclude its use as a direct replacement in applications designed for the AX97-20470.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (AX97-20470): Select this part when the application requires an unshielded 47 µH inductor with 800 mA current capacity and operates within the -40°C to 85°C temperature range. This part is active in production with established supply availability.

Substitute Part (SRR1005-470Y): This Bourns component provides equivalent inductance with enhanced electrical performance characteristics. The lower DC resistance (190 mOhm vs. 310 mOhm) reduces power dissipation. The higher current rating (1 A vs. 800 mA) provides additional design margin. The shielded construction offers improved electromagnetic isolation. The extended operating temperature range (-40°C to 125°C) accommodates more demanding thermal environments. Both parts maintain ROHS3 compliance and EAR99 classification, ensuring regulatory equivalence.

Selection between these parts should be based on application-specific requirements regarding thermal performance, electromagnetic interference considerations, and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can the SRR1005-470Y directly replace the AX97-20470 in existing designs?

A: Yes. Both parts provide 47 µH inductance with compatible surface mount packaging. The substitute's lower DC resistance and higher current rating represent performance improvements rather than deviations. The shielded construction of the SRR1005-470Y may affect electromagnetic coupling in circuits sensitive to field distribution, requiring circuit-level validation.

Q: What is the significance of the inductance tolerance difference (±20% vs. ±15%)?

A: The SRR1005-470Y exhibits tighter tolerance control. For applications requiring precise inductance values, the Bourns part provides better consistency. Both parts fall within acceptable ranges for general filtering and energy storage applications.

Q: How does the shielded vs. unshielded construction affect substitution?

A: The AX97-20470 is unshielded, allowing magnetic field radiation. The SRR1005-470Y is shielded, containing the magnetic field. In applications where adjacent components are sensitive to magnetic coupling, the shielded substitute may reduce interference. Conversely, in circuits designed to exploit magnetic coupling, the shielded design may alter performance.

Q: Are there packaging differences between these parts?

A: The AX97-20470 is supplied in bulk packaging. The SRR1005-470Y is supplied in tape and reel format. Both use nonstandard surface mount packages with similar footprints (13.46mm x 9.40mm vs. 12.70mm x 10.00mm). Height differences exist (3.50mm vs. 5.20mm), which may affect PCB assembly clearance in space-constrained designs.

Q: What is the operating temperature consideration for substitution?

A: The AX97-20470 operates to 85°C maximum. The SRR1005-470Y extends to 125°C. For applications operating near the upper limit of the primary part's range, the substitute provides additional thermal margin. For applications with strict thermal budgets below 85°C, both parts are equivalent.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes. Regulatory substitution is direct.