- Transistors
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- Working of Transistor as a Switch
- C828 transistor Pinout, Equivalent, uses, working
- C945 Transistor Pinout, feature, Equivalent
- IRF740 N-Channel Power Mosfet Features, Application
- C1815 Transistor Pinout, Equivalent, Uses, Features
- IRF3205 MOSFET Pinout, Its Features and Application
- 2SA1015 Transistor, Pinout, Features ,alternate
- BC547 Transistor Pinout, Features, uses, working
- BC108 Transistor Pinout, Equivalent
- BC548 Transistor Pinout, Equivalent, Uses
- BC549 Transistor Pinout, Features
- BC550 Transistor pinout features
- BC556 Transistor Pinout, Equivalent
- BC557 Transistor Pinout, Equivalent, Features Features Specifications
- BC558 Transistor Pinout, Equivalent
- BC559 General Purpose PNP Transistor
- BC560 Pinout, Equivalent features
- BC847W Transistor pinout, equivalent
- TIP120 Transistor Pinout, Equivalent and Features
- TIP122 Transistor Pinout, Equivalent, Uses, Features
- TIP127 Transistor Pinout, equivalent & Features
- KSA1220 Transistor pinout, Features and other detail
- KSA992 Transistor Pinout, Features and uses
- TIP32C Transistor pinout Features and Applications
- 2N3904 Transistor Pinout, Features and applications
- 2N3906 Pinout, Features, Equivalent uses
- BD139 Transistor Pinout, Features, Alternate
- BD140 Transistor Pinout, Equivalent
- 2N2222A Transistor: Pin Configuration
- Transistor 2N2907 Pinout Features
- 2N7000 N-Channel MOSFET
- 2N7002 N-channel Logic Level MOSFET
- 2SA1943 Transistor Pinout, Features
- MJE13009 Transistor Pinout, Features
2SA1943 Transistor Pinout, Features
The 2SA1943 transistor is a PNP transistor originally from Toshiba. Due to the transistor's high current gain and collector current, it is very generally used in AF amplifiers or High power audio circuits. But now this Transistor is entirely from Toshiba and it has been changed with TTA1943, However, still, the good and old transistor 2SA1943 can still be found in the market since it is still being cloned by other manufacturers in China. the pin configuration of 2sa1943.
Pin Diagram of 2SA1943 Transistor
| Pin Number | Pin Name | Description |
| 1 | Base | Controls the current between the collector and emitter |
| 2 | Collector | Current flows out through the collector |
| 3 | Emitter | Current Drains in through emitter |
Features of PNP transistor:
- Package – TO-264
- Type of package – PNP
- Collector and Emitter Voltage: -230 V
- Collector -Base Voltage: -230 Volt
- Emitter-Base Voltage: -5 Volts
- The current of Collector 15 A
- Collector Dissipation – 150 Watt
- DC Current Gain (hfe) – 55–160
- Transition Frequency – 30 MHz
- Operating & Storage Junction Temperature Range -55 to +150 °C
Complement of PNP transistor
The complement of the PNP transistor is the 2SC5200.
Replacement and equivalent of 2SA1943
Replacement and equivalent of the PNP transistor are: 2SA1962,KTA1962A, 2SA2151A-O KTA1943, 2SA2151A-P, 2SA2151A-Y, FJA4213, FJL4215, KTA1943A, KTA1962, KTA1943, MJW1302A or MJW1302AG
How we can use 2SA1943
Transistor 2sa1943 has mainly been used in amplifier designs Most amplifiers used a push-pull circuit similar to that of a Class B amplifier, which needs a NPN transistor and a PNP transistor. The 2SA1943 is a PNP Transistor and it also has its complementary 2SE5200 which is a kind of NPN. 2SA1943 and 2SE5200 transistors are often employed together to design high-power Amplifiers. Since the Transistors work with high switching frequency and high collector current which tend to heat up very fast, therefore they are always used along with a heat sink. These transistors are generally used to manufacture Stereo systems that are rated for 200 watts or above, they can respond to frequency from 5Hz to 100kHz and has a very good sense of 0.75Vrms.
Applications of PNP transistor:
- high current switching (upto 15A) loads
- AF /RF circuits
- Push-Pull configuration circuits
- Can be used as medium Power switches
- Low Slew rate devices
- Audio frequency Amplifier
Transistor 2SA1943 datasheet
To download the datasheet of this transistor just copy and paste the below link in your browser.
https://datasheetspdf.com/pdf-file/73730/ToshibaSemiconductor/2SA1943/1
2SA1943 package
The package Type of transistor 2SA1943 is TO-264
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