Part No. 2SA1943
Introduction:
The 2SA1943 is principally used in design of amplifiers. Most amplifiers utilize a push-pull circuit like that of Class B amplifier, which involves a NPN transistor and PNP transistor. The 2SA1943 is a PNP Transistor and it also has its corresponding 2SE5200 which is a NPN type transistor. Both these transistors are frequently used together to design high power Amplifiers
Features:
- PNP Transistor having medium power
- Range of DC current gain 55 to 160
- Collector current continuous is almost 15A
- Collector-Emitter voltage is 230 V
- Collector-Base voltage is 230V
- Emitter Base Voltage is 5V
Working:
Ever Since the Transistors work with high switching frequency and high collector current, they have a tendency to heat up very fast, hence they are all the time used along with a heat sink. Note that the heat sink will also act as the collector pin of the transistor and hence heat sink should be separated from the rest of the circuit. These transistors are mainly used for high powered devices and medium switches.
These transistors are frequently used to build Stereo systems that are rated for 200W or directly above, they can respond to frequency from 5Hz to 100kHz and has a very good sensitivity of 0.75Vrms. There has very fewer signal to noise ratio and less total harmonic distortion making it ideal for audio applications.
Applications:
Collector Voltage is very high approx. 230V
Recommended for high fidelity audio
High current medium power switches
Specially in RF and AF Switches
PS: Found Proximity Switch and Self-locking – Lock-free Switches on Utsource.
