MPS750 Equivalent & Substitute Parts

Part Overview

The MPS750 is an active PNP bipolar junction transistor manufactured by Central Semiconductor Corp, rated for 40 V collector-emitter breakdown voltage and 2 A maximum collector current. This device is packaged in TO-92-3 (TO-226AA) through-hole configuration and operates across a temperature range of -65°C to 150°C. The MPS750 is suitable for general-purpose switching and amplification applications requiring moderate power dissipation up to 625 mW. Identifying equivalent substitute parts becomes necessary when the primary device is unavailable, when alternative compliance certifications are required, or when enhanced performance characteristics within the same electrical specifications are beneficial for system optimization.

Substiute Parts

MPS750

Central Semiconductor CorpIn Stock: 1279MPS750 Datasheet

Current PartRFQ

ZTX790A

Diodes IncorporatedIn Stock: 5001ZTX790A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPS750 is determined by strict electrical and mechanical compatibility criteria. The substitute part must satisfy the following mandatory parameters:

• Transistor Type: PNP configuration
• Current Rating: Minimum 2 A collector current capability
• Voltage Rating: Minimum 40 V collector-emitter breakdown voltage
• Package Compatibility: Through-hole mounting with TO-92 or TO-92-compatible pinout
• Power Dissipation: Minimum 625 mW capability

The ZTX790A from Diodes Incorporated meets all substitution criteria. This device maintains identical maximum ratings for collector current (2 A) and collector-emitter breakdown voltage (40 V), while providing enhanced performance in transition frequency (100 MHz versus 75 MHz) and maximum power dissipation (1 W versus 625 mW). The ZTX790A is packaged in E-Line-3 configuration, which is mechanically and electrically compatible with TO-92 pinout standards. Both devices operate as PNP transistors with through-hole mounting, ensuring direct functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

MPS750 Selection Criteria: The MPS750 remains the primary choice when RoHS non-compliant components are acceptable within system design constraints and when the specific thermal or frequency characteristics of this device are required. This device is active and maintains full inventory availability.

ZTX790A Selection Criteria: The ZTX790A is selected when ROHS3 compliance is mandatory for the application or end-market. This substitute provides superior performance margins in power dissipation (1 W versus 625 mW) and transition frequency (100 MHz versus 75 MHz), enabling operation in higher-speed switching applications. The extended upper operating temperature limit (200°C versus 150°C) accommodates thermal environments requiring enhanced temperature headroom. Both devices maintain identical maximum electrical ratings for current and voltage, ensuring direct functional substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the ZTX790A directly replace the MPS750 in existing circuit designs?

A: Yes. Both devices are PNP transistors with identical maximum collector current (2 A) and collector-emitter breakdown voltage (40 V) ratings. The E-Line-3 package of the ZTX790A is mechanically and electrically compatible with TO-92-3 pinout. No circuit modifications are required for direct substitution.

Q: What are the key differences between these two devices?

A: The ZTX790A provides enhanced performance specifications: transition frequency increases from 75 MHz to 100 MHz, maximum power dissipation increases from 625 mW to 1 W, and the upper operating temperature extends from 150°C to 200°C. Additionally, the ZTX790A is ROHS3 compliant, while the MPS750 is RoHS non-compliant.

Q: Are there package compatibility concerns when substituting the MPS750 with the ZTX790A?

A: No. The ZTX790A E-Line-3 package maintains TO-92 pinout compatibility. Both devices are through-hole mounted with identical lead configurations, allowing direct board-level substitution without mechanical modification.

Q: Which device should be selected for new designs?

A: Selection depends on compliance requirements. For applications requiring ROHS3 certification, the ZTX790A is the appropriate choice. For applications without RoHS compliance mandates, either device is suitable based on performance and availability considerations.

Q: Do these devices have different DC current gain characteristics?

A: Yes. The MPS750 specifies minimum DC current gain (hFE) of 75 at 1 A collector current and 2 V collector-emitter voltage. The ZTX790A specifies minimum DC current gain of 300 at 10 mA collector current and 2 V collector-emitter voltage. These measurements are taken at different operating points and reflect different device characterization methodologies. Both devices are suitable for general-purpose switching applications.