AX97-20151 Equivalent & Substitute Parts Reference

Part Overview

The AX97-20151 is a 150 µH unshielded drum core wirewound inductor manufactured by Triad Magnetics, rated for 500 mA continuous current with a maximum DC resistance of 890mOhm. 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 1099 units in stock. Substitute parts are identified when equivalent inductance values, compatible current ratings, and matching mounting technologies are available from alternative manufacturers, enabling procurement flexibility and supply chain continuity.

Substiute Parts

AX97-20151

Triad MagneticsIn Stock: 1206AX97-20151 Datasheet

Current PartRFQ

SRR1005-151K

Bourns Inc.In Stock: 1824SRR1005-151K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AX97-20151 are identified based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 150 µH (exact match required)
• Core type: Drum core wirewound construction
• Core material: Ferrite
• Mounting technology: Surface mount
• Current rating: Minimum 500 mA or higher
• DC resistance: Within acceptable operating limits for the application
• Regulatory compliance: ROHS3 compliant

Substitution Logic: The SRR1005-151K from Bourns Inc. qualifies as a substitute because it maintains the same inductance specification (150 µH), uses identical core construction (ferrite drum core wirewound), and supports surface mount assembly. The substitute part exceeds the current rating requirement (550 mA versus 500 mA) and provides lower DC resistance (520mOhm maximum versus 890mOhm maximum), representing an improvement in electrical performance. Both parts are ROHS3 compliant and operate within compatible temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

AX97-20151 (Triad Magnetics) is the primary component choice when:

• Unshielded inductor performance is required for the application
• Compact height (3.50mm maximum) is a critical constraint
• Original equipment specifications explicitly call for this part number
• Bulk packaging format is preferred for procurement

SRR1005-151K (Bourns Inc.) is a qualified substitute when:

• The application can accommodate shielded inductor characteristics
• Physical dimensions allow for the slightly larger footprint (12.70mm x 10.00mm) and increased height (5.20mm maximum)
• Lower DC resistance (520mOhm) provides performance benefits
• Extended operating temperature range (-40 to 125°C) is advantageous
• Tighter inductance tolerance (±10%) improves circuit performance
• Tape & Reel packaging format aligns with production requirements

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements. Selection between these parts depends on physical layout constraints, shielding requirements, and thermal operating conditions specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the SRR1005-151K directly replace the AX97-20151 on a PCB?

A: Direct replacement requires verification of physical constraints. The SRR1005-151K has a smaller footprint (12.70mm x 10.00mm versus 13.46mm x 9.40mm) but is taller (5.20mm versus 3.50mm). PCB layout must accommodate the increased height. Shielding characteristics also differ, which may affect circuit performance in noise-sensitive applications.

Q: What is the significance of the shielding difference?

A: The AX97-20151 is unshielded, while the SRR1005-151K is shielded. Shielding reduces electromagnetic interference (EMI) emission and susceptibility. Applications requiring EMI control may benefit from the shielded substitute. Conversely, applications where shielding is not required or where unshielded performance is specified should use the AX97-20151.

Q: Are the inductance values truly equivalent?

A: Both parts are specified at 150 µH. However, the AX97-20151 has a tolerance of ±20%, while the SRR1005-151K has a tolerance of ±10%. This means the substitute provides tighter inductance control, which may improve circuit performance in applications sensitive to inductance variation.

Q: What does the lower DC resistance of the SRR1005-151K mean?

A: The SRR1005-151K has a maximum DC resistance of 520mOhm compared to 890mOhm for the AX97-20151. Lower DC resistance reduces resistive losses and heat generation during operation. This is advantageous in power applications where efficiency is important.

Q: Can I use the AX97-20151 in applications requiring operation above 85°C?

A: No. The AX97-20151 is rated for -40°C to 85°C operation. The SRR1005-151K extends this range to -40°C to 125°C, making it suitable for high-temperature applications. If your application requires operation above 85°C, the SRR1005-151K is the appropriate choice.

Q: What is the difference between Bulk and Tape & Reel packaging?

A: Bulk packaging is suitable for manual assembly or small-volume production. Tape & Reel (TR) packaging is designed for automated pick-and-place assembly equipment. The SRR1005-151K in Tape & Reel format is optimized for high-volume manufacturing processes.

Q: Are both parts currently available?

A: According to inventory data, the AX97-20151 has 1099 units in stock, and the SRR1005-151K has 1776 units in stock. Both parts are active products. Availability should be confirmed with your supplier for current procurement timelines.

Q: What is the saturation current specification?

A: The SRR1005-151K specifies a saturation current (Isat) of 660 mA, meaning the inductor maintains its specified inductance up to this current level. The AX97-20151 does not provide a saturation specification. For applications approaching or exceeding 500 mA, the saturation specification of the substitute provides additional design margin.