MPS2907ARLG Equivalent & Substitute Parts

Part Overview

The MPS2907ARLG is a PNP bipolar junction transistor manufactured by onsemi, rated for 60 V collector-emitter breakdown voltage and 600 mA maximum collector current. This device is packaged in a through-hole TO-92 (TO-226-3) configuration and is designed for general-purpose switching and amplification applications. The MPS2907ARLG is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts maintain the same electrical performance characteristics while offering active product status and improved availability.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Voltage - Collector Emitter Breakdown (Max)	60	V
Current - Collector (Ic) (Max)	600	mA
Vce Saturation (Max) @ Ib, Ic	1.6 @ 50mA, 500mA	V
Current - Collector Cutoff (Max)	10	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 150mA, 10V	—
Power - Max	625	mW
Frequency - Transition	200	MHz
Operating Temperature Range	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	TO-226-3, TO-92-3	—

Substitute Part Grouping Explanation

Substitute parts for the MPS2907ARLG are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes (Identical Electrical Specifications): Parts that maintain all key electrical parameters including 60 V breakdown voltage, 600 mA maximum collector current, 625 mW power dissipation, 200 MHz transition frequency, and identical saturation voltage characteristics. These parts are packaged in TO-92-3 through-hole configuration and are pin-compatible with the original device.

Similar Substitutes (Enhanced or Modified Specifications): Parts that share the same voltage and frequency ratings but differ in collector current rating (800 mA instead of 600 mA) or package type (surface mount SOT-23-3 instead of through-hole TO-92-3). These parts are functionally compatible for applications where the enhanced current rating or alternative package does not conflict with circuit design requirements.

Substitution eligibility is determined by the following parameters:

Transistor polarity (PNP)
Voltage - Collector Emitter Breakdown (60 V minimum)
DC Current Gain (hFE) minimum specification (100 @ 150mA, 10V)
Frequency - Transition (200 MHz)
Vce Saturation characteristics (1.6 V @ 50mA, 500mA)

Parameter Comparison

Part Number	Manufacturer	Product Status	Ic (Max) mA	Vce(br) V	Power mW	Package Type	Mounting	Temp Range °C
MPS2907ARLG	onsemi	Obsolete	600	60	625	TO-92-3	Through Hole	-55 to 150
KSP2907ACTA	onsemi	Active	600	60	625	TO-92-3	Through Hole	-55 to 150
KSP2907ATA	Fairchild Semiconductor	Active	600	60	625	TO-92-3	Through Hole	-55 to 150
KSP2907ATF	Fairchild Semiconductor	Active	600	60	625	TO-92-3	Through Hole	-55 to 150
MMBT2907ALT1G	onsemi	Active	600	60	300	SOT-23-3	Surface Mount	-55 to 150
PN2907ATA	onsemi	Active	800	60	625	TO-92-3	Through Hole	-55 to 150
PN2907ATAR	onsemi	Active	800	60	625	TO-92-3	Through Hole	-55 to 150
PN2907ATF	Fairchild Semiconductor	Active	800	60	625	TO-92-3	Through Hole	-55 to 150
PN2907ATFR	onsemi	Active	800	60	625	TO-92-3	Through Hole	-55 to 150

Engineering Selection Recommendations

Direct Substitutes for Pin-Compatible Through-Hole Applications:

KSP2907ACTA, KSP2907ATA, and KSP2907ATF are direct electrical equivalents to the MPS2907ARLG with active product status. These parts maintain identical collector current (600 mA), breakdown voltage (60 V), power dissipation (625 mW), and operating temperature range. KSP2907ACTA is manufactured by onsemi and carries ROHS3 compliance. KSP2907ATA and KSP2907ATF are manufactured by Fairchild Semiconductor and are available in bulk packaging. All three parts are suitable for direct replacement in existing through-hole PCB designs without circuit modification.

Enhanced Current Rating Alternatives:

PN2907ATA, PN2907ATAR, PN2907ATF, and PN2907ATFR offer 800 mA maximum collector current while maintaining the same 60 V breakdown voltage and 625 mW power dissipation. These parts are functionally compatible with the MPS2907ARLG in applications where the higher current rating does not introduce thermal or circuit design conflicts. All PN2907 variants are manufactured by onsemi or Fairchild Semiconductor and carry active product status with ROHS3 compliance.

Surface Mount Alternative:

MMBT2907ALT1G is a surface-mount equivalent in SOT-23-3 package manufactured by onsemi with active product status and ROHS3 compliance. This part maintains the same electrical specifications (600 mA, 60 V, 200 MHz) but reduces power dissipation to 300 mW due to the smaller package. MMBT2907ALT1G is suitable for new designs requiring surface-mount technology but is not pin-compatible with through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can KSP2907ACTA be used as a direct replacement for MPS2907ARLG in existing designs?

A: Yes. KSP2907ACTA is electrically and mechanically identical to MPS2907ARLG. Both devices are rated for 600 mA collector current, 60 V breakdown voltage, 625 mW power dissipation, and are packaged in TO-92-3 through-hole configuration. No circuit modification is required.

Q: What is the difference between the KSP2907 and PN2907 series?

A: The primary difference is collector current rating. KSP2907 variants are rated for 600 mA maximum collector current, matching the original MPS2907ARLG specification. PN2907 variants are rated for 800 mA maximum collector current. Both series maintain identical 60 V breakdown voltage, 200 MHz transition frequency, and 625 mW power dissipation. PN2907 parts are suitable for applications requiring higher current capacity.

Q: Is MMBT2907ALT1G compatible with through-hole PCB designs?

A: No. MMBT2907ALT1G is a surface-mount device in SOT-23-3 package and is not pin-compatible with through-hole designs. This part is intended for new surface-mount designs. For through-hole applications, use KSP2907ACTA, KSP2907ATA, KSP2907ATF, or PN2907 variants.

Q: What is the significance of the product status difference between MPS2907ARLG and substitute parts?

A: MPS2907ARLG is classified as obsolete, indicating that onsemi has discontinued production and support. All listed substitute parts carry active product status, ensuring ongoing manufacturing, technical support, and supply chain availability. Active status is critical for production continuity and long-term design support.

Q: Can PN2907 parts be used in applications designed for 600 mA maximum current?

A: Yes. PN2907 parts rated for 800 mA maximum collector current are functionally compatible with applications designed for 600 mA operation. The higher current rating provides design margin and does not introduce incompatibility. However, circuit thermal design must account for actual operating current to prevent excessive power dissipation.

Q: What packaging options are available for through-hole applications?

A: All direct and enhanced current substitutes (KSP2907 and PN2907 series) are available in TO-92-3 through-hole package. These parts are mechanically and electrically compatible with existing through-hole PCB designs. Surface-mount alternatives are limited to MMBT2907ALT1G in SOT-23-3 package.

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

A: KSP2907ACTA and PN2907 variants carry ROHS3 compliance certification. KSP2907ATA and KSP2907ATF are manufactured by Fairchild Semiconductor and carry REACH Unaffected status. All parts are classified under ECCN EAR99. Specific compliance requirements should be verified against design and procurement specifications.

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