MPSA92_D81Z Equivalent & Substitute Parts

Part Overview

The MPSA92_D81Z is a PNP bipolar junction transistor 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_D81Z is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability for production, and support long-term system maintenance where original stock becomes depleted.

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_D81Z is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Parameters (Must Match):

Transistor polarity: PNP
Maximum collector current: 500 mA
Collector-emitter breakdown voltage: 300 V
Vce saturation 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 (Must Match):

Mounting type: Through Hole
Package designation: TO-92-3

The KSP92TA meets all specified electrical and mechanical parameters and is therefore classified as a direct equivalent substitute for the MPSA92_D81Z.

Parameter Comparison

Parameter	MPSA92_D81Z	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	—
REACH Status	REACH Unaffected	REACH Unaffected	✓
ECCN	EAR99	EAR99	✓

Engineering Selection Recommendations

The KSP92TA is a direct functional equivalent to the MPSA92_D81Z. Both devices share identical electrical specifications and mechanical packaging, enabling pin-for-pin substitution in circuit applications.

Product Status Consideration: The MPSA92_D81Z is classified as obsolete, while the KSP92TA maintains active product status. Selection of the KSP92TA ensures access to current manufacturing inventory and ongoing supplier support.

Compliance Status: Both parts carry REACH Unaffected designation and EAR99 export classification. The KSP92TA additionally carries RoHS3 Compliance certification, providing enhanced environmental and regulatory alignment with modern manufacturing standards.

Availability: The KSP92TA is available in significantly higher inventory quantities (85,100 pieces) compared to the MPSA92_D81Z (674 pieces), supporting both immediate procurement needs and long-term supply chain planning.

Frequently Asked Questions (FAQ)

Q: Can the KSP92TA be used as a direct replacement for the MPSA92_D81Z in existing designs?

A: Yes. The KSP92TA is electrically and mechanically equivalent to the MPSA92_D81Z. All electrical parameters, including collector current, breakdown voltage, saturation characteristics, current gain, power rating, and transition frequency are identical. The TO-92-3 package pinout is identical, enabling direct substitution without circuit modification.

Q: What is the primary reason to transition from MPSA92_D81Z to KSP92TA?

A: The MPSA92_D81Z is classified as an obsolete product with limited remaining inventory. The KSP92TA is an active product with substantially higher availability, ensuring reliable long-term supply for production and maintenance applications.

Q: Are there any differences in operating temperature range between these devices?

A: The MPSA92_D81Z specifies an operating temperature range of -55°C to 150°C. The KSP92TA specifies a maximum operating temperature of 150°C. For applications requiring operation below -55°C, the MPSA92_D81Z specifications must be retained. For standard industrial and commercial temperature ranges, both devices are equivalent.

Q: What packaging formats are available for the KSP92TA?

A: The KSP92TA is supplied in Cut Tape (CT) packaging. The MPSA92_D81Z packaging format is not specified in the provided data. Both devices use the TO-92-3 package designation for the physical component form factor.

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

A: Both parts carry REACH Unaffected and EAR99 export classification. The KSP92TA additionally carries RoHS3 Compliance certification. For applications subject to RoHS requirements, the KSP92TA provides enhanced regulatory compliance.

Q: Can these devices be used interchangeably in high-frequency switching applications?

A: Yes. Both devices specify identical transition frequency of 50 MHz and identical saturation characteristics. They are suitable for equivalent performance in switching applications within this frequency range.

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