MMSTA92-7 Equivalent & Substitute Parts

Part Overview

The MMSTA92-7 is a PNP bipolar junction transistor manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-323 package. This component operates at 300 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and 200 mW power dissipation. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and production needs.

Key Parameters

Parameter	Value
Transistor Type	PNP
Voltage - Collector Emitter Breakdown (Max)	300 V
Current - Collector (Ic) (Max)	100 mA
Power - Max	200 mW
Frequency - Transition	50 MHz
Package / Case	SC-70, SOT-323
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 150°C (TJ)
Vce Saturation (Max) @ Ib, Ic	500mV @ 2mA, 20mA
DC Current Gain (hFE) (Min) @ Ic, Vce	25 @ 30mA, 10V

Substitute Part Grouping Explanation

Substitution of the MMSTA92-7 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Transistor Type: PNP
Voltage - Collector Emitter Breakdown (Max): 300 V minimum
Current - Collector (Ic) (Max): 100 mA minimum
Power - Max: 200 mW minimum
Frequency - Transition: 50 MHz minimum
Package / Case: SC-70 or SOT-323 compatible
Mounting Type: Surface Mount

Substitute parts are grouped into three categories based on their relationship to the main part:

Parametric Equivalents: Parts with identical electrical specifications and package compatibility, differing only in packaging format (tape & reel versus cut tape) or manufacturer.

Upgrade Parts: Components with enhanced electrical performance characteristics (higher current ratings, improved saturation voltage, or higher current gain) while maintaining voltage and frequency specifications, suitable for applications requiring additional design margin.

Manufacturer Recommended Alternatives: Parts with different package types or current ratings that provide functional equivalence through superior performance characteristics.

Parameter Comparison

Part Number	Manufacturer	Ic (Max)	Vce(sat) @ 2mA, 20mA	hFE (Min)	Power (Max)	Package	Product Status	RoHS Status
MMSTA92-7	Diodes Incorporated	100 mA	500mV	25 @ 30mA, 10V	200 mW	SOT-323	Discontinued	Non-compliant
MMSTA92-7-F	Diodes Incorporated	100 mA	500mV	25 @ 30mA, 10V	200 mW	SOT-323	Active	ROHS3 Compliant
MMSTA92-TP	Micro Commercial Co	100 mA	500mV	25 @ 30mA, 10V	200 mW	SOT-323	Active	ROHS3 Compliant
PMSTA92,115	Nexperia USA Inc.	100 mA	250mV	30 @ 30mA, 10V	200 mW	SOT-323	Active	ROHS3 Compliant
MMBTA92-TP	Micro Commercial Co	300 mA	200mV	100 @ 10mA, 10V	300 mW	SOT-23	Active	ROHS3 Compliant
MSB92WT1G	onsemi	500 mA	500mV	25 @ 1mA, 10V	150 mW	SOT-323	Active	ROHS3 Compliant
MSB92AWT1G	onsemi	500 mA	500mV	120 @ 1mA, 10V	150 mW	SOT-323	Active	ROHS3 Compliant
MSB92ASWT1G	onsemi	500 mA	500mV	120 @ 1mA, 10V	150 mW	SOT-323	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalents):

MMSTA92-7-F and MMSTA92-TP provide direct electrical and mechanical equivalence to the MMSTA92-7. Both components maintain identical collector current (100 mA), saturation voltage (500mV), and power dissipation (200 mW) specifications. MMSTA92-7-F is manufactured by Diodes Incorporated, the original manufacturer, and is ROHS3 compliant with active product status. MMSTA92-TP is manufactured by Micro Commercial Co and is also ROHS3 compliant with active status. Selection between these two depends on supply chain availability and preferred manufacturer qualification.

Enhanced Performance Alternative (Upgrade):

PMSTA92,115 manufactured by Nexperia USA Inc. offers improved electrical characteristics with reduced saturation voltage (250mV versus 500mV) and higher DC current gain (30 versus 25 at specified conditions). This component is AEC-Q101 qualified for automotive applications and ROHS3 compliant. The PMSTA92,115 is suitable for applications requiring enhanced switching performance and automotive-grade reliability.

Higher Current Capacity Alternatives:

MMBTA92-TP provides increased collector current capacity (300 mA versus 100 mA) and power dissipation (300 mW versus 200 mW) in a SOT-23 package. This component is suitable for applications requiring higher current handling with improved thermal performance.

MSB92WT1G, MSB92AWT1G, and MSB92ASWT1G offer the highest current capacity (500 mA) among available substitutes while maintaining SOT-323 package compatibility. These onsemi components provide design margin for applications with variable or uncertain current requirements. MSB92AWT1G and MSB92ASWT1G feature significantly higher DC current gain (120 versus 25), enabling more efficient switching characteristics.

All substitute parts listed maintain the 300 V collector-emitter breakdown voltage and 50 MHz transition frequency specifications of the original MMSTA92-7.

Frequently Asked Questions (FAQ)

Q: Can MMSTA92-7-F be used as a direct replacement for MMSTA92-7?

A: Yes. MMSTA92-7-F is a parametric equivalent with identical electrical specifications (100 mA collector current, 300 V breakdown voltage, 200 mW power, 50 MHz transition frequency) and package compatibility (SOT-323). The primary difference is packaging format (tape & reel) and ROHS3 compliance status. MMSTA92-7-F is manufactured by the same company (Diodes Incorporated) and has active product status.

Q: What is the difference between MMSTA92-TP and MMSTA92-7-F?

A: Both are parametric equivalents with identical electrical specifications. MMSTA92-TP is manufactured by Micro Commercial Co, while MMSTA92-7-F is manufactured by Diodes Incorporated. Both are ROHS3 compliant and have active product status. Selection depends on supply chain availability and manufacturer preference.

Q: When should PMSTA92,115 be selected instead of MMSTA92-7-F?

A: PMSTA92,115 should be selected when improved switching performance is required. This component features reduced saturation voltage (250mV versus 500mV) and higher DC current gain (30 versus 25), resulting in faster switching transitions and lower power dissipation during saturation. PMSTA92,115 is AEC-Q101 qualified for automotive applications.

Q: Can MMBTA92-TP replace MMSTA92-7 in all applications?

A: MMBTA92-TP is functionally suitable for applications where the MMSTA92-7 operates, as it exceeds all critical electrical specifications (300 mA versus 100 mA collector current, 300 mW versus 200 mW power). However, the package differs (SOT-23 versus SOT-323), requiring PCB layout modification. MMBTA92-TP is suitable for new designs or applications where package change is acceptable.

Q: What are the advantages of MSB92AWT1G over MMSTA92-7?

A: MSB92AWT1G provides significantly higher collector current capacity (500 mA versus 100 mA) and substantially higher DC current gain (120 versus 25 at 1mA, 10V). These characteristics enable more efficient switching with lower base drive requirements. The SOT-323 package maintains form factor compatibility. Trade-off: maximum power dissipation is lower (150 mW versus 200 mW).

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. The original MMSTA92-7 is RoHS non-compliant. This compliance difference is significant for applications subject to environmental regulations or customer requirements.

Q: Can MSB92WT1G and MSB92AWT1G be used interchangeably?

A: Both components are mechanically and electrically compatible in the SOT-323 package with 500 mA collector current and 300 V breakdown voltage. The primary difference is DC current gain: MSB92WT1G has minimum hFE of 25 at 1mA, 10V, while MSB92AWT1G has minimum hFE of 120 at the same conditions. Selection depends on base drive availability and switching speed requirements.

Q: What is the operating temperature range for substitute parts?

A: MMSTA92-7-F, MMSTA92-TP, and MMBTA92-TP operate across -55°C to 150°C (TJ). PMSTA92,115, MSB92WT1G, MSB92AWT1G, and MSB92ASWT1G operate to 150°C maximum junction temperature. Applications requiring full -55°C to 150°C range should specify MMSTA92-7-F or MMSTA92-TP.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message