ST2310FX Equivalent & Substitute Parts

Part Overview

The ST2310FX is an NPN bipolar junction transistor manufactured by STMicroelectronics, rated for 600 V collector-emitter breakdown voltage and 12 A maximum collector current in an ISOWATT-218FX through-hole package. This device is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and procurement needs. The ST2310FX delivers 65 W maximum power dissipation with a junction temperature rating of 150°C and maintains ROHS3 compliance.

Substiute Parts

ST2310FX

STMicroelectronicsIn Stock: 1671ST2310FX Datasheet

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ST1510FX

STMicroelectronicsIn Stock: 2194ST1510FX Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ST2310FX is determined by the following critical parameters:

Mandatory Matching Criteria:

• Transistor Type: NPN configuration
• Mounting Type: Through Hole
• Package / Case: ISOWATT218FX
• Maximum Collector Current: 12 A minimum
• Operating Temperature: 150°C (TJ) minimum
• RoHS Compliance: ROHS3 Compliant

Allowable Parameter Variations:

• Voltage - Collector Emitter Breakdown: Equal to or greater than 600 V
• Power - Max: Equal to or greater than 65 W
• Vce Saturation: Lower values indicate improved performance
• DC Current Gain (hFE): Equal to or greater than specified minimum
• Current - Collector Cutoff: Lower values acceptable

The ST1510FX qualifies as a direct substitute based on identical transistor type, mounting configuration, and package specification. The ST1510FX exceeds the voltage rating requirement (750 V versus 600 V) and maintains equivalent current handling capacity (12 A) and thermal rating (150°C).

Parameter Comparison

Engineering Selection Recommendations

The ST1510FX is the qualified substitute for the obsolete ST2310FX based on the following engineering criteria:

Product Status Alignment: The ST1510FX maintains active product status with STMicroelectronics, ensuring continued availability and supply chain stability. The ST2310FX obsolete classification creates procurement risk and supply discontinuation.

Compliance Certification: Both devices maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and legacy system maintenance.

Electrical Performance: The ST1510FX provides enhanced voltage rating (750 V versus 600 V), delivering improved overvoltage margin in applications operating near the 600 V specification. Collector current capacity remains identical at 12 A. The lower saturation voltage (2V versus 3V) in the ST1510FX indicates superior switching efficiency.

Thermal and Mechanical Compatibility: Identical junction temperature rating (150°C), mounting type (through hole), and package specification (ISOWATT218FX) ensure direct mechanical and thermal interchangeability without circuit board redesign.

Inventory Availability: The ST1510FX maintains higher inventory levels (2138 Pcs) compared to the ST2310FX (1600 Pcs), supporting production scheduling and procurement planning.

Frequently Asked Questions (FAQ)

Q: Can the ST1510FX directly replace the ST2310FX in existing circuit designs?

A: Yes. Both devices share identical transistor type (NPN), mounting configuration (through hole), and package specification (ISOWATT218FX). The ST1510FX provides enhanced voltage rating and improved saturation characteristics, making it functionally compatible for all applications rated at or below 600 V.

Q: What is the primary difference between the ST2310FX and ST1510FX?

A: The ST1510FX features a higher collector-emitter breakdown voltage rating (750 V versus 600 V) and lower saturation voltage (2V versus 3V). Both devices maintain 12 A collector current capacity and 150°C junction temperature rating. The ST1510FX is active product status while the ST2310FX is obsolete.

Q: Are there any thermal or mounting considerations when substituting the ST1510FX for the ST2310FX?

A: No thermal or mounting modifications are required. Both devices utilize the ISOWATT218FX through-hole package with identical pin configuration and thermal characteristics. Direct socket substitution is supported without circuit board layout changes.

Q: Does the ST1510FX meet the same compliance standards as the ST2310FX?

A: Yes. The ST1510FX maintains ROHS3 compliance and REACH unaffected status identical to the ST2310FX, satisfying regulatory requirements for both new designs and legacy system applications.

Q: What is the significance of the lower saturation voltage in the ST1510FX?

A: Lower saturation voltage (2V versus 3V) indicates reduced voltage drop across the transistor during saturation, resulting in lower power dissipation and improved switching efficiency in high-current applications.

Q: Is the ST1510FX suitable for applications originally designed for 600 V operation?

A: Yes. The ST1510FX 750 V rating exceeds the 600 V requirement, providing additional safety margin and overvoltage protection. No circuit modifications are necessary for applications operating at or below 600 V.