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Description:
The MMBTA42 is a PNP bipolar junction transistor (BJT) known for its robust performance and reliability in various electronic circuits. Encapsulated in the SOT-23 package, this transistor features a collector-emitter voltage (VCEO) rating of 300V, a maximum collector current (IC) of 0.3A, and a power dissipation (PD) of 0.35W. It has a transition frequency (fT) of 50MHz, making it suitable for applications that require efficient switching and moderate frequency amplification.

Slkor alternative equivalents to STMicroelectronics.

STMicroelectronics	Slkor Replacements
Part Number	Part Number	Product Category	Package
BTA06-800BWRG	BTA06-800B	SCR	TO-220
BTA08-800BWRG	BTA08-800B	SCR	TO-220
BTA12-600BWRG	BTA12-600B	SCR	TO-220
BTA16-800BWRG	BTA16-800B	SCR	TO-220
BTA24-800BWRG	BTA24-800B	SCR	TO-220
BTA26-800BWRG	BTA26-800B	SCR	TO-3P
BTA41-800BRG	BTA41-800B	SCR	TO-3P
BTA41-1200BRG	BTA41-1200B	SCR	TO-3P
ZMM5V1	ZMM5V1	Zener Diode	LL-34
TIP122	TIP122	Darlington Array	TO-220
TIP127	TIP127	Darlington Array	TO-220
ULN2001D1013TR	ULN2001D	Darlington Array	SOP-16
L4949	SL4949	Linear Regulator	SOP-8
LM317T-DGZ	LM317	Linear Regulator	TO-220
LMV321ILT	LMV321	Op-amp	SOT-23-5
M24C02-WMN6TP	SL24C02D	EEPROM	SOP-8
MMBTA42	MMBTA42	Transistor	SOT-23
MMBT4401	MMBT4401	Transistor	SOT-23
MMBT5551	MMBT5551	Transistor	SOT-23
MMBT5401	MMBT5401	Transistor	SOT-23
MMBT3904	MMBT3904	Transistor	SOT-23
MMBT3906	MMBT3906	Transistor	SOT-23
MMBT2222A	MMBT2222A	Transistor	SOT-23
D44H11	SL44H11	Transistor	TO-220-3L

Features

l High breakdown voltage

l Low collector-emitter saturation voltage
    Complementary to MMBTA92 (PNP)

Applications:
The MMBTA42 transistor is suitable for a variety of electronic applications, including:

● Switching Applications: Used in low to medium power switching circuits where efficient control of current flow is essential.
● Voltage Regulation: Integrated into voltage regulator circuits for stable power supply outputs in consumer electronics and industrial equipment.
● Audio Amplification: Ideal for low to moderate power audio amplifiers and signal amplification circuits.
● Power Management: Suitable for applications requiring reliable power switching and control, such as in DC-DC converters and power supply units.

MAXIMUM RATINGS (Ta=25℃ unless otherwise noted)

Symbol	Parameter	Value		Unit
VCBO	Collector-Base Voltage	300		V
VCEO	Collector-Emitter Voltage	300		V
VEBO	Emitter-Base Voltage	5		V
IC	Collector Current -Continuous	0.3		A