2SC1845 Transistor Pinout, Equivalents, Applications, Features and Other Info
Today I am doing to discuss a very interesting NPN transistor 2SC1845 that is designed to be used in middle range, power amplifier and other types of amplifier applications. This post focuses on 2SC1845 transistor pinout, equivalents, applications, features and other technical information about this transistor.
Absolute Maximum Ratings:
- Package Type: TO-92
- Transistor Type: NPN
- Max Collector Current(IC): 50mA
- Max Collector-Emitter Voltage (VCE): 120V
- Max Collector-Base Voltage (VCB): 120V
- Max Emitter-Base Voltage (VBE): 5V
- Max Collector Dissipation (Pc): 500 mW
- Max Transition Frequency (fT): 50 to 110 MHz
- Minimum & Maximum DC Current Gain (hFE): 150 to 1200
- Max Storage, Operating & Junction temperature range: -55 to +150 Centigrade
PNP Complementary:
PNP Complementary of 2SC1845 is 2SA992
Replacement and Equivalent:
KSC1845, 2SD1701, KTC3200, ECG90
2SC1845 Transistor Explained / Description:
2SC1845 is a very interesting transistor designed to be used in middle range and power amplifiers. But due to its good electrical characteristics this transistor can also be used in variety of other applications.
The transistor is packed with many good features such as DC current gain of 200 to 1200, transition frequency of upto 110MHz, low noise ability etc.
The absolute maximum ratings of the transistor are collector-emitter voltage of 120V, collector current is 50mA, collector-base voltage is also 120V, emitter-base voltage is 5V, collector dissipation is 500mW and max storage and junction temperature is from -55°C to 150°C.
The transistor is manufactured in 4 different DC current gain values or hFE values which can be determined with the help of the alphabet written after their part numbers. If that alphabet is “P” then the transistor’s hFE value will be 200 to 400, if the alphabet is “F” then the hFE value will be 300 to 600, if “E” then 400 to 800 and if the alphabet is “U” then its hFE value will be 600 to 1200.
Where and How to Use This Transistor:
As discussed above the transistor is mainly designed to be used in audio amplification applications but it is not limited to these applications and can also be used in variety of other applications.
Moreover, it is a BJT (Bipolar Junction Transistor) so the using procedure is the same as we use any other BJT by applying signal to its base, connecting its emitter to the negative rail of the circuit and receiving the output from the collector pin in amplifier circuits and driving load through collector pin in switch circuits.
Applications:
Audio preamplifiers
Audio amplifiers
Low Gain Signal Amplification
Radio and RF Applications
Switching
Safe Operating Guidelines:
The transistor should not be used to its absolute maximum ratings and it is recommended to stay 20% below from these ratings. Always check and confirm its pinout before use and do not expose it to temperatures below -55°C and above +150 °C.
Datasheet:
To download the datasheet just copy and paste the below link in your browser.
https://www.alldatasheet.com/datasheet-pdf/view/83356/NEC/2SC1845.html
