MPS750-AP Equivalent & Substitute Parts

Part Overview

The MPS750-AP is a PNP bipolar junction transistor manufactured by Micro Commercial Co, designed for general-purpose switching and amplification applications. Specified for 40 V collector-emitter breakdown voltage and 2 A maximum collector current, the device is packaged in a TO-92 through-hole configuration with a maximum power dissipation of 625 mW.

The MPS750-AP is classified as obsolete. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production, repair, and field replacement applications.

Substiute Parts

MPS750-AP

Micro Commercial CoIn Stock: 1110MPS750-AP Datasheet

Current PartRFQ

KSA1281YTA

Fairchild SemiconductorIn Stock: 6831KSA1281YTA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPS750-AP is determined by the following critical parameters:

Transistor Type: Both the main part and substitute must be PNP configuration to maintain circuit polarity and biasing requirements.

Current Rating (Ic Max): The substitute must support a minimum collector current of 2 A to handle the same load conditions.

Voltage Rating (Vce Breakdown): The substitute voltage rating must equal or exceed 40 V to provide equivalent or superior voltage stress margin.

Power Dissipation: The substitute power rating must be sufficient to handle the thermal load of the application.

Package Type: The substitute must use TO-92 through-hole packaging to ensure mechanical and electrical compatibility with existing printed circuit board layouts and socket configurations.

Operating Temperature Range: The substitute must support the full operating temperature range or the specific range required by the application.

The KSA1281YTA meets all substitution criteria. It is a PNP transistor with 2 A maximum collector current, 50 V breakdown voltage (exceeding the 40 V requirement), 1 W power dissipation (exceeding the 625 mW requirement), and TO-92-3 through-hole packaging. The KSA1281YTA is classified as active product status, ensuring ongoing availability and supply chain support.

Parameter Comparison

Engineering Selection Recommendations

The KSA1281YTA is a direct substitute for the obsolete MPS750-AP based on electrical and mechanical compatibility. The substitute part exceeds the minimum performance requirements across all critical parameters:

Voltage Margin: The KSA1281YTA provides 50 V breakdown voltage compared to the MPS750-AP specification of 40 V, delivering a 25% voltage safety margin.

Power Dissipation: The KSA1281YTA is rated for 1 W maximum power dissipation, compared to 625 mW for the MPS750-AP, providing 60% additional thermal headroom.

Frequency Performance: The KSA1281YTA operates at 100 MHz transition frequency, exceeding the MPS750-AP specification of 75 MHz, supporting higher-speed switching applications.

Product Availability: The KSA1281YTA is classified as active product status with 6735 units in stock, ensuring reliable supply chain access compared to the obsolete MPS750-AP.

Compliance: Both parts are classified under ECCN EAR99 for export control purposes. The MPS750-AP carries ROHS3 compliance certification.

Package Compatibility: Both devices use identical TO-92-3 through-hole packaging with formed leads, ensuring direct mechanical and electrical compatibility with existing circuit board layouts without modification.

Frequently Asked Questions (FAQ)

Q: Can the KSA1281YTA directly replace the MPS750-AP without circuit modification?

A: Yes. Both transistors are PNP type with identical 2 A collector current rating, TO-92-3 through-hole packaging, and compatible pin configurations. The KSA1281YTA meets or exceeds all electrical specifications of the MPS750-AP.

Q: What is the voltage margin when substituting with the KSA1281YTA?

A: The KSA1281YTA provides 50 V breakdown voltage versus the MPS750-AP specification of 40 V, creating a 10 V safety margin. This additional margin improves reliability in voltage stress conditions.

Q: Are there thermal considerations when using the KSA1281YTA as a substitute?

A: The KSA1281YTA is rated for 1 W maximum power dissipation compared to 625 mW for the MPS750-AP. This higher rating provides additional thermal capacity. Thermal design calculations should be based on actual circuit operating conditions and ambient temperature.

Q: Does the higher DC current gain of the KSA1281YTA affect circuit operation?

A: The KSA1281YTA specifies 120 minimum hFE at 500 mA and 2 V, compared to 75 minimum hFE at 1 A and 2 V for the MPS750-AP. Higher current gain may reduce base drive requirements in switching applications. Circuit biasing should be verified for the specific application.

Q: Is the KSA1281YTA available for immediate procurement?

A: The KSA1281YTA is classified as active product status with 6735 units in stock, indicating current availability. The MPS750-AP is obsolete with limited remaining inventory.

Q: What is the operating temperature range for the KSA1281YTA?

A: The KSA1281YTA supports operation up to 150°C junction temperature. The MPS750-AP specifies -55°C to 150°C. Verify the minimum operating temperature requirement for your specific application.

Q: Are there any compliance or certification differences between these parts?

A: The MPS750-AP carries ROHS3 compliance certification. Both parts are classified under ECCN EAR99 for export control. Verify compliance requirements for your specific application and region.