MPS8599G Equivalent & Substitute Parts

Part Overview

The MPS8599G is a PNP bipolar junction transistor manufactured by onsemi, rated for 80V collector-emitter breakdown voltage and 500mA maximum collector current. This component is packaged in a TO-92 through-hole configuration and is rated for 625mW maximum power dissipation. The MPS8599G is classified as obsolete, making identification of equivalent substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Transistor Type	PNP
Current - Collector (Ic) (Max)	500 mA
Voltage - Collector Emitter Breakdown (Max)	80 V
Power - Max	625 mW
Mounting Type	Through Hole
Package / Case	TO-92
Operating Temperature Range	-55°C to 150°C (TJ)
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the MPS8599G are identified based on electrical and mechanical parameter equivalence. The following criteria determine substitution validity:

Electrical Parameters:

Transistor type must be PNP
Maximum collector current must be equal to or greater than 500 mA
Maximum collector-emitter breakdown voltage must be equal to or greater than 80 V
Maximum power dissipation must be equal to or greater than 625 mW
Operating temperature range must encompass -55°C to 150°C

Mechanical Parameters:

Mounting type must be through-hole
Package must be TO-92 or equivalent TO-226-3 configuration

The MPSA56-AP manufactured by Micro Commercial Co meets all specified electrical and mechanical parameters for direct substitution with the MPS8599G.

Parameter Comparison

Parameter	MPS8599G (onsemi)	MPSA56-AP (Micro Commercial Co)	Match Status
Transistor Type	PNP	PNP	Equivalent
Current - Collector (Ic) (Max)	500 mA	500 mA	Equivalent
Voltage - Collector Emitter Breakdown (Max)	80 V	80 V	Equivalent
Power - Max	625 mW	625 mW	Equivalent
Current - Collector Cutoff (Max)	100 nA	100 nA	Equivalent
Operating Temperature Range	-55°C to 150°C (TJ)	-55°C to 150°C (TJ)	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	TO-92-3	TO-92-3	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent
Frequency - Transition	150 MHz	50 MHz	MPSA56-AP Lower
DC Current Gain (hFE) (Min)	100 @ 1mA, 5V	100 @ 100mA, 1V	Different Test Conditions
Vce Saturation (Max)	400mV @ 5mA, 100mA	250mV @ 10mA, 100mA	MPSA56-AP Lower

Engineering Selection Recommendations

The MPSA56-AP is a direct electrical and mechanical substitute for the MPS8599G. Both components share identical maximum ratings for collector current (500 mA), collector-emitter breakdown voltage (80 V), and power dissipation (625 mW). Both operate across the same temperature range (-55°C to 150°C) and are packaged in TO-92 through-hole configuration.

The MPSA56-AP is RoHS3 compliant, whereas the MPS8599G compliance status is not specified in the provided data. Both components are REACH unaffected and classified under ECCN EAR99.

The transition frequency of the MPSA56-AP (50 MHz) is lower than the MPS8599G (150 MHz). This difference is relevant only for applications requiring high-frequency switching performance. For DC and low-frequency applications, this parameter difference does not affect functional equivalence.

The saturation voltage characteristics differ between the two parts under specified test conditions. The MPSA56-AP exhibits lower saturation voltage (250 mV versus 400 mV), which may provide improved performance in switching applications.

Frequently Asked Questions (FAQ)

Q: Can the MPSA56-AP directly replace the MPS8599G in existing designs?

A: Yes. The MPSA56-AP meets all maximum electrical ratings and operates across the identical temperature range. Both components are packaged in TO-92 through-hole configuration with identical pinout. Direct substitution is valid from an electrical and mechanical standpoint.

Q: What is the significance of the different transition frequencies?

A: The MPS8599G has a transition frequency of 150 MHz, while the MPSA56-AP is rated at 50 MHz. This parameter defines the frequency at which current gain begins to decrease. For DC applications and low-frequency switching circuits, this difference is not operationally significant. For applications requiring switching speeds above 50 MHz, the frequency rating difference must be evaluated against specific circuit requirements.

Q: Are there differences in saturation voltage performance?

A: Yes. The MPSA56-AP exhibits a maximum saturation voltage of 250 mV (at 10 mA base current, 100 mA collector current), compared to 400 mV for the MPS8599G (at 5 mA base current, 100 mA collector current). The lower saturation voltage of the MPSA56-AP may provide improved efficiency in saturated switching applications.

Q: What packaging considerations apply to this substitution?

A: Both the MPS8599G and MPSA56-AP use TO-92 through-hole packaging. The MPSA56-AP is supplied in cut tape format, while the MPS8599G packaging format is not specified. Both components have identical lead configurations and footprints, allowing direct board-level substitution without layout modifications.

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

A: The MPSA56-AP is RoHS3 compliant. The MPS8599G compliance status is not provided in the available data. Both components are REACH unaffected and carry the same ECCN classification (EAR99).

Q: What is the current availability status of these parts?

A: Both the MPS8599G and MPSA56-AP are classified as obsolete. The MPS8599G has 804 pieces in stock, and the MPSA56-AP has 793 pieces in stock according to the provided inventory data.

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