MPSA05-AP Equivalent & Substitute Parts

Part Overview

The MPSA05-AP is a through-hole NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for general-purpose switching and amplification applications. Specified for 60 V collector-emitter breakdown voltage and 500 mA maximum collector current, this device operates across a temperature range of -55°C to 150°C with a maximum power dissipation of 625 mW.

The MPSA05-AP carries an obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	60	V
Current - Collector (Ic) (Max)	500	mA
Power - Max	625	mW
Frequency - Transition	100	MHz
DC Current Gain (hFE) (Min)	100	—
Operating Temperature Range	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	TO-92-3	—

Substitute Part Grouping Explanation

Substitution of the MPSA05-AP is determined by electrical and mechanical parameter compatibility within the NPN bipolar junction transistor category. The following parameters establish the substitution criteria:

Electrical Parameters:

Transistor polarity (NPN type)
Collector-emitter breakdown voltage rating (minimum 60 V required)
Maximum collector current capacity (minimum 500 mA required)
Maximum power dissipation (minimum 625 mW required)
Transition frequency (100 MHz minimum)
DC current gain characteristics

Mechanical Parameters:

Through-hole mounting configuration
TO-92-3 package compatibility
Formed leads physical interface

Substitute parts must meet or exceed all specified electrical parameters and maintain identical mechanical packaging to ensure direct replacement capability without circuit board redesign or layout modification.

Parameter Comparison

Parameter	MPSA05-AP	BC63916-D27Z	Unit
Manufacturer	Micro Commercial Co	onsemi	—
Transistor Type	NPN	NPN	—
Voltage - Collector Emitter Breakdown (Max)	60	80	V
Current - Collector (Ic) (Max)	500	1000	mA
Power - Max	625	1000	mW
Frequency - Transition	100	100	MHz
DC Current Gain (hFE) (Min)	100	100	—
Operating Temperature Range	-55 to 150	-55 to 150	°C
Mounting Type	Through Hole	Through Hole	—
Package / Case	TO-92-3	TO-92-3	—
Product Status	Obsolete	Active	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

The BC63916-D27Z manufactured by onsemi qualifies as a direct substitute for the MPSA05-AP based on the following criteria:

Electrical Compatibility: The BC63916-D27Z exceeds all maximum electrical ratings of the MPSA05-AP. The substitute device provides 80 V collector-emitter breakdown voltage (versus 60 V), 1 A maximum collector current (versus 500 mA), and 1 W maximum power dissipation (versus 625 mW). Transition frequency and DC current gain specifications are identical. These enhanced ratings ensure the substitute operates within safe margins in applications designed for the MPSA05-AP.

Mechanical Compatibility: Both devices utilize identical TO-92-3 through-hole packaging with formed leads, enabling direct board-level replacement without modification to printed circuit board layouts or mechanical assemblies.

Compliance and Availability: The BC63916-D27Z maintains ROHS3 compliance and REACH unaffected status, matching the regulatory posture of the original part. The substitute carries active product status with confirmed inventory availability, addressing the obsolescence constraint of the MPSA05-AP.

Temperature Performance: Operating temperature range remains constant at -55°C to 150°C across both devices, preserving thermal design margins in target applications.

Frequently Asked Questions (FAQ)

Q: Can the BC63916-D27Z replace the MPSA05-AP in existing circuit designs?

A: Yes. The BC63916-D27Z meets or exceeds all electrical specifications of the MPSA05-AP and shares identical TO-92-3 packaging. No circuit modifications or board redesign is required for direct substitution.

Q: What are the key differences between these two transistors?

A: The BC63916-D27Z provides higher electrical ratings across three parameters: 80 V versus 60 V collector-emitter breakdown voltage, 1 A versus 500 mA maximum collector current, and 1 W versus 625 mW maximum power dissipation. Transition frequency, DC current gain, operating temperature range, and package type remain identical.

Q: Does the higher current rating of the BC63916-D27Z affect circuit operation?

A: No. Higher maximum ratings do not alter circuit behavior when operating within the original design specifications. The substitute device will perform identically to the MPSA05-AP in applications designed for 500 mA collector current and 60 V breakdown voltage.

Q: Are both devices RoHS compliant?

A: Yes. Both the MPSA05-AP and BC63916-D27Z are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the physical package compatibility?

A: Both transistors use TO-92-3 through-hole packaging with formed leads. The devices are mechanically interchangeable without any modifications to circuit board layouts or component mounting procedures.

Q: Why is the MPSA05-AP listed as obsolete?

A: The MPSA05-AP carries obsolete product status, indicating it is no longer in active production. The BC63916-D27Z, with active product status and confirmed inventory, provides continuity for applications requiring this transistor type.

Q: Can the BC63916-D27Z be used in high-frequency applications?

A: Yes. The transition frequency specification of 100 MHz is identical for both devices, confirming equivalent performance in high-frequency switching and amplification circuits.

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