2SA671 Transistor Pinout, Applications, Features, Equivalents and More

2SA671 is a PNP power transistor available in TO-220 package. The transistor is mainly designed for low frequency amps applications. It features low collector to emitter saturation voltage and good DC current gain and can handle up to -50V collector-emitter voltage and up to 3A collector current, moreover it also has a complementary transistor which is also a plus. In this article we will discuss 2SA671 transistor pinout, equivalents, features, applications and other details.

2SA671 Pin Configuration:

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 goes out or exits from this pin and goes to the load connected to this pin.

Pin3 is the Base pin: The Base pin is the middle pin of the transistor, it controls the flow of current from Emitter to Collector.

 

 

Key Specifications of 2SA671 Transistor:

• Package Type: TO-220
• Transistor Type: PNP
• Max Collector Current(I_C): -3A
• Max Collector-Emitter Voltage (V_CEO): -50V
• Max Collector-Base Voltage (V_CBO): -50V
• Max Emitter-Base Voltage (VEBO): -4V
• Max Power Dissipation (PD): 25W
• Minimum DC Current Gain (h_FE): 35 to 320
• Transition Frequency (fT): 5MHz
• Max Storage & Operating temperature: -55 to +150 Centigrade

 

PNP Complementary:

PNP Complementary of 2SA671 is 2SC1061

 

Replacement & Equivalent

BD244A/B/C, BDT96, BDT94, BDT92, BD242A/B/C D45C8, D45C12, D45C10, D44C8, D44C12, D44C10, BD808, BD800, BD304.

 

2SA671 Short Description:

2SA671 is a PNP power transistor designed to be used in low frequency power amp applications. The Maximum collector-base voltage of the transistor is -50V, maximum collector-emitter voltage is -50V, maximum continuous collector current is -3A, continuous base current is -0.5A, total device power dissipation is 25W, junction temperature is 150°C and storage temperature is from -55°C to 150°C.

The transistor has 5MHz transition frequency at -0.5A collector current, maximum collector emitter saturation voltage is -1.0V at -2A collector current and -0.2A base current. The DC current gain of the transistor is from 35 to 320.

All the above specs and features makes this transistor suitable to use in low frequency power amplifier applications but it is not only limited to that and can also be used in other applications such as switching circuits, variety of audio amplifiers and their stages and other general purpose applications.

 

hFE Classification:

The transistor is available in different DC current gain classifications which are as follows:

The gain of each 2sa671 can be determined with the help of alphabet written after the part number here are the details of each alphabet.

Class A = 35-70

Class B = 60-12

Class C = 100-200

Class D = 160-320

 

Key Features:

3A Continuous and 6A Peak Collector Current

Collector-Emitter Voltage of -50V

25W Power Dissipation

Low Collector-Emitter Saturation Voltage

5MHz Transition Frequency

Good DC Current Gain and Availability in Different Gains.

Availability of Complimentary transistor

Low Collector Emitter Saturation Voltage

 

2SA671 Applications:

Audio Amplifiers

Audio Driver Circuits

Switching Circuits

Regulated Power Supplies

Control Circuits

General Purpose Amplifications

 

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.
• Always use a suitable heatsink with the transistor if the transistor is generating heat.
• 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/264219/ISC/2SA671.html