MPSA92_D74Z Equivalent & Substitute Parts

Part Overview

The MPSA92_D74Z 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_D74Z 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 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_D74Z is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Parameters:

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
DC current gain: 25 @ 30mA, 10V
Maximum power dissipation: 625 mW
Transition frequency: 50 MHz

Mechanical Parameters:

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

Substitute parts must match all specified electrical parameters and maintain the same physical package configuration to ensure direct replacement capability in existing circuit designs and PCB layouts.

Parameter Comparison

Parameter	MPSA92_D74Z	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	—
RoHS Status	Not specified	ROHS3 Compliant	—

Engineering Selection Recommendations

The KSP92TA is a parametric equivalent to the MPSA92_D74Z across all specified electrical and mechanical characteristics. Both devices are manufactured by onsemi and share identical performance parameters for collector current, breakdown voltage, saturation characteristics, current gain, power dissipation, and transition frequency.

The KSP92TA is classified as an active product with current manufacturing status, whereas the MPSA92_D74Z is obsolete. The KSP92TA carries ROHS3 compliance certification, supporting modern regulatory requirements for electronic component manufacturing and environmental standards.

Both parts maintain REACH Unaffected status and identical ECCN and HTSUS classifications, confirming regulatory alignment for international trade and supply chain applications.

The KSP92TA is available in Cut Tape packaging format with significantly higher inventory levels (85,100 pieces), providing improved supply chain reliability compared to the obsolete MPSA92_D74Z.

Frequently Asked Questions (FAQ)

Q: Can the KSP92TA directly replace the MPSA92_D74Z in existing designs?

A: Yes. The KSP92TA matches all electrical parameters and physical package specifications of the MPSA92_D74Z. Both devices are PNP transistors with identical maximum ratings for collector current (500 mA), breakdown voltage (300 V), power dissipation (625 mW), and transition frequency (50 MHz). The TO-92-3 package configuration is identical, enabling direct pin-compatible substitution.

Q: What is the difference in product status between these parts?

A: The MPSA92_D74Z is classified as obsolete, indicating it is no longer in active production. The KSP92TA is an active product with current manufacturing support. For new designs and ongoing production requirements, the KSP92TA is the recommended selection.

Q: Are there packaging differences between these parts?

A: Both parts use the TO-92-3 Through Hole package. The MPSA92_D74Z is supplied in standard packaging, while the KSP92TA is available in Cut Tape format. This packaging difference does not affect electrical performance or physical compatibility; it reflects different distribution and handling methods.

Q: Do these parts have different compliance certifications?

A: The KSP92TA carries ROHS3 compliance certification. Both parts maintain REACH Unaffected status and share identical ECCN (EAR99) and HTSUS (8541.21.0095) classifications. The ROHS3 compliance of the KSP92TA supports modern environmental and regulatory requirements.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by matching transistor polarity (PNP), maximum collector current (500 mA), collector-emitter breakdown voltage (300 V), saturation voltage (500mV @ 2mA, 20mA), collector cutoff current (250 nA), DC current gain (25 @ 30mA, 10V), maximum power dissipation (625 mW), and transition frequency (50 MHz). All these parameters are identical between the MPSA92_D74Z and KSP92TA.

Q: Is the operating temperature range identical for both parts?

A: The MPSA92_D74Z specifies an operating temperature range of -55°C to 150°C. The KSP92TA specifies a maximum operating temperature of 150°C. Both parts support the upper temperature limit of 150°C; the KSP92TA data does not specify a lower temperature limit in the provided parameters.

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