MPSA92_D27Z Equivalent & Substitute Parts

Part Overview

The MPSA92_D27Z is a PNP bipolar junction transistor (BJT) manufactured by onsemi, designed for general-purpose switching and amplification applications. This device features a maximum collector current of 500 mA, collector-emitter breakdown voltage of 300 V, and maximum power dissipation of 625 mW in a Through Hole TO-92-3 package.

The MPSA92_D27Z is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production and repair requirements for legacy systems utilizing this transistor.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) (Max)	500	mA
Voltage - Collector Emitter Breakdown (Max)	300	V
Vce Saturation (Max) @ Ib, Ic	500mV @ 2mA, 20mA	—
Current - Collector Cutoff (Max)	250	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	25 @ 30mA, 10V	—
Power - Max	625	mW
Frequency - Transition	50	MHz
Operating Temperature Range	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	TO-92-3	—

Substitute Part Grouping Explanation

Substitution of the MPSA92_D27Z is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Parameters (Critical for Substitution):

Transistor polarity: PNP
Maximum collector current: 500 mA
Collector-emitter breakdown voltage: 300 V
Saturation voltage characteristics: 500mV @ 2mA, 20mA
Collector cutoff current: 250 nA (ICBO)
DC current gain (hFE): 25 @ 30mA, 10V
Maximum power dissipation: 625 mW
Transition frequency: 50 MHz

Mechanical Parameters (Critical for Substitution):

Mounting type: Through Hole
Package designation: TO-92-3 (TO-226AA Formed Leads)

The KSP92TA meets all specified electrical and mechanical parameters and qualifies as a direct substitute for the MPSA92_D27Z in applications requiring these performance characteristics.

Parameter Comparison

Parameter	MPSA92_D27Z	KSP92TA	Match
Transistor Type	PNP	PNP	✓
Current - Collector (Ic) (Max)	500 mA	500 mA	✓
Voltage - Collector Emitter Breakdown (Max)	300 V	300 V	✓
Vce Saturation (Max) @ Ib, Ic	500mV @ 2mA, 20mA	500mV @ 2mA, 20mA	✓
Current - Collector Cutoff (Max)	250 nA	250 nA	✓
DC Current Gain (hFE) (Min) @ Ic, Vce	25 @ 30mA, 10V	25 @ 30mA, 10V	✓
Power - Max	625 mW	625 mW	✓
Frequency - Transition	50 MHz	50 MHz	✓
Mounting Type	Through Hole	Through Hole	✓
Package / Case	TO-92-3	TO-92-3	✓
Product Status	Obsolete	Active	—

Engineering Selection Recommendations

The KSP92TA is a direct electrical and mechanical equivalent to the MPSA92_D27Z. Both devices are manufactured by onsemi and share identical electrical specifications across all critical parameters including collector current, breakdown voltage, saturation characteristics, current gain, power rating, and transition frequency.

The primary distinction between these parts is product status: the MPSA92_D27Z is classified as obsolete, while the KSP92TA maintains active product status. The KSP92TA is ROHS3 compliant, whereas the MPSA92_D27Z does not specify RoHS compliance. Both parts carry REACH Unaffected status and EAR99 export classification.

For new designs and ongoing production requiring PNP transistor functionality within the specified electrical and thermal parameters, the KSP92TA is the appropriate selection due to its active availability and current compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the KSP92TA directly replace the MPSA92_D27Z in existing circuit designs?

A: Yes. The KSP92TA meets all electrical and mechanical specifications of the MPSA92_D27Z, including collector current, breakdown voltage, saturation characteristics, current gain, power dissipation, transition frequency, and TO-92-3 package configuration. Direct substitution is supported without circuit modification.

Q: What is the difference between the MPSA92_D27Z and KSP92TA packaging?

A: Both devices utilize the TO-92-3 (TO-226AA Formed Leads) package for Through Hole mounting. The MPSA92_D27Z is supplied in standard packaging, while the KSP92TA is supplied in Cut Tape (CT) format. The physical package and pin configuration are identical; the difference is in the delivery format only.

Q: Why is the MPSA92_D27Z classified as obsolete?

A: The MPSA92_D27Z has reached end-of-life status in the manufacturer's product portfolio. The KSP92TA represents the active equivalent offering from onsemi with identical electrical performance and current manufacturing support.

Q: Are there compliance differences between these parts?

A: The KSP92TA is ROHS3 compliant, while the MPSA92_D27Z does not specify RoHS compliance. Both parts are REACH Unaffected and carry EAR99 export classification. For applications requiring RoHS compliance, the KSP92TA is the appropriate selection.

Q: What are the operating temperature ranges for these transistors?

A: The MPSA92_D27Z operates from -55°C to 150°C (TJ). The KSP92TA operates to 150°C (TJ). For applications requiring the full -55°C lower temperature limit, design verification is necessary to confirm KSP92TA suitability within the specific thermal environment.

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