AX02-300R6 Equivalent & Substitute Parts

Part Overview

The AX02-300R6 is a 600 nH shielded drum core wirewound inductor manufactured by Triad Magnetics, designed for surface mount applications requiring high current handling. This component is rated for 27 A continuous current with a maximum DC resistance of 0.95 mOhm and operates across the temperature range of -40°C to 85°C. The part is currently in active production status with ROHS3 compliance.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining functional compatibility in the target application circuit.

Substiute Parts

AX02-300R6

Triad MagneticsIn Stock: 762AX02-300R6 Datasheet

Current PartRFQ

SRP1250-R68M

Bourns Inc.In Stock: 10246SRP1250-R68M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AX02-300R6 is determined by the following critical parameters:

Inductance Value: The substitute part must operate within the ±20% tolerance band of 600 nH, establishing an acceptable range of 480 nH to 720 nH at the 100 kHz test frequency.

Current Handling: The substitute must support a minimum continuous current rating of 27 A and saturation current (Isat) of at least 40 A to maintain performance under peak load conditions.

DC Resistance: The substitute's maximum DC resistance must not exceed 0.95 mOhm to preserve power efficiency and thermal characteristics in the application circuit.

Core Type and Shielding: The substitute must employ a shielded drum core wirewound construction to maintain electromagnetic isolation and prevent coupling with adjacent circuit elements.

Mounting and Package Compatibility: The substitute must be surface mount compatible with standard PCB assembly processes.

Compliance and Environmental: The substitute must maintain ROHS3 compliance and operate within or exceed the specified temperature range of -40°C to 85°C.

Parameter Comparison

Engineering Selection Recommendations

Electrical Performance: The SRP1250-R68M substitute provides inductance within the ±20% tolerance specification (680 nH versus 600 nH nominal). Current handling capacity exceeds the main part requirement by 26% (34 A versus 27 A), and saturation current exceeds the requirement by 35% (54 A versus 40 A).

DC Resistance Consideration: The substitute exhibits higher DC resistance at 1.7 mOhm maximum compared to 0.95 mOhm for the main part. This represents a 79% increase in resistance and will result in proportionally higher resistive losses and heat generation under identical current conditions.

Thermal Performance: The substitute operates across a wider temperature range (-55°C to 150°C) compared to the main part (-40°C to 85°C), providing extended environmental capability.

Physical Compatibility: The substitute footprint is similar in length (13.90 mm versus 13.30 mm) but slightly narrower (13.50 mm versus 15.00 mm) and lower in profile (5.90 mm versus 6.50 mm). Package designation differs (Nonstandard versus 2-SMD, J-Lead), requiring verification of PCB land pattern compatibility.

Core Material Difference: The substitute uses iron core material versus ferrite in the main part. This material difference affects frequency response characteristics, Q factor, and electromagnetic shielding properties.

Compliance Status: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements.

Selection Criteria: The SRP1250-R68M is suitable as a substitute when the application can tolerate increased DC resistance losses and when the different core material characteristics are compatible with circuit performance requirements. Physical package differences require PCB layout verification prior to implementation.

Frequently Asked Questions (FAQ)

Q: Can the SRP1250-R68M directly replace the AX02-300R6 without circuit modification?

A: The SRP1250-R68M meets the inductance and current rating specifications within tolerance. However, the higher DC resistance (1.7 mOhm versus 0.95 mOhm) will increase power dissipation. The different core material (iron versus ferrite) may affect frequency response. Physical package differences require PCB land pattern verification. Circuit performance validation is necessary before production implementation.

Q: What is the impact of the 0.75 mOhm increase in DC resistance?

A: At the rated 27 A current, the additional resistance increases power loss by approximately 0.55 watts compared to the main part. This results in higher component temperature rise and requires thermal management evaluation in the application circuit.

Q: Are the physical dimensions compatible with existing PCB layouts?

A: The substitute is slightly narrower (13.50 mm versus 15.00 mm) and lower in profile (5.90 mm versus 6.50 mm). The length is comparable (13.90 mm versus 13.30 mm). Package designation differs (Nonstandard versus 2-SMD, J-Lead), requiring verification that PCB land patterns and assembly equipment accommodate the substitute package geometry.

Q: How does the core material difference affect circuit performance?

A: Ferrite core (main part) and iron core (substitute) exhibit different permeability characteristics, frequency response, and Q factor behavior. The iron core typically provides higher saturation current but may exhibit different impedance characteristics across the operating frequency range. Application-specific frequency response requirements must be evaluated.

Q: Is the substitute suitable for high-temperature applications?

A: The substitute operates to 150°C maximum, exceeding the main part's 85°C limit. However, the higher DC resistance generates additional heat at rated current. Thermal analysis is required to confirm the substitute remains within safe operating temperature limits under application load conditions.

Q: What packaging format is supplied for the SRP1250-R68M?

A: The substitute is supplied in Tape & Reel (TR) format with Moisture Sensitivity Level 1 (Unlimited). The main part is supplied in Box packaging. Assembly process compatibility with tape and reel format must be confirmed.

Q: Are both parts currently available for procurement?

A: Both parts maintain active product status. The main part has 667 pieces in stock; the substitute has 10,227 pieces in stock. Availability should be confirmed with the component supplier for specific delivery requirements.