2SA949 Transistor Pinout, Applications, Features, Equivalents and More

2SA949 is a high voltage transistor available in TO-92L package. It is designed for high voltage and audio driver stage applications but besides these applications it can also be used in other general purpose applications. This article explains 2SA949 transistor pinout, applications, features, equivalent and other details about this device.

2SA949 Pin Configuration:

The pin configuration of the transistor are as follows:

Pin1 is the Emitter pin: In a PNP transistor the current enters in the transistor through this pin.

Pin2 is the Collector pin: Collector is the output pin of the transistor the current exits from the collector pin and goes to the load connected to this pin.

Pin3 is the Base pin: The Base pin is connected with the middle region between the emitter and collector region. The base pin controls the flow of current from emitter to collector.

 

Key Specifications of 2SA949 Transistor:

• Package Type: TO-92
• Transistor Type: PNP
• Max Collector Current(I_C): 50mA
• Max Collector-Emitter Voltage (V_CEO): 150V
• Max Collector-Base Voltage (V_CBO): 150V
• Max Emitter-Base Voltage (VEBO): 5V
• Max Power Dissipation (PD): 800mW
• Minimum DC Current Gain (h_FE): 70 to 240
• Max Storage & Operating temperature: -55 to +150 Centigrade

 

Replacement & Equivalent:

KTA1024, KSA1013, BF423, 2SA1624, 2SA1370, 2SA1370, 2SB1456, 2SA1370E, 2SA1482, 2SA1584, 2SB1244, ZTX560, 2SA1145Y, KTA1070, 2SA1145.

 

2SA949 Short Description:

2SA949 is a high voltage PNP transistor designed for high voltage and audio amplifiers driver stage applications. The maximum collector-emitter voltage of the transistor is -150V that makes it suitable for high voltage circuits. The maximum collector current of the transistor is 50mA. Max collector power dissipation is 800mW.

Moreover the transistor also features transition frequency of 120MHz and the DC current gain of 70 to 240 due to which it provides good amplification. Additionally it has very low output capacitance and low leakage current makes it a reliable and stable transistor.

All these features and capabilities makes this transistor suitable for driver stages, regulated power supplies, amplifiers, switching and wide variety of other applications.

 

Key Features:

High Voltage

Good Transition Frequency

Good Amplification

Low Leakage Current

Good DC Current Gain

Low Output Capacitance

Small Package

Low Collector Emitter Saturation Voltage

Stable and Reliable

 

2SA949 Applications:

Audio Amplifiers

Switching for High Voltage

Regulated Power Supplies

Voltage Amplifiers

Control Circuits

General Purpose Switching

Signal Processing

 

Safe Operating Guidelines:

Here are some important guidelines to safely operate the transistor.

• Do not operate the transistor to its absolute maximum ratings and always stay at least 20% below their ratings.
• Always variety pin configuration of the transistor before using in circuits.
• Use a flyback diode when you are driving motors, solenoids, relays and other inductive loads.
• Use the transistor within the given temperature range of -55°C to +150°C.

 

Datasheet:

To download the datasheet just copy and paste the below link in your browser.

https://www.alldatasheet.com/datasheet-pdf/view/30052/TOSHIBA/2SA949.html