BC177 PNP Transistor

• BC177 is a transistor of the widely used PNP transistor of BC17x series, the other transistors in this series are BC178 and BC179. The NPN complimentary series of these transistors is BC10x in which there are also three NPN transistors that are BC107, BC108 and BC109. All these transistors are very popular and used in variety of applications. BC177 is designed for general purpose usage for example general purpose switching and amplification tasks under its limits.
• The maximum collector current of the BC177 transistor is -100mA. The maximum collector emitter voltage is -45V and the maximum collector consumption is 300mW. It has a very good DC current gain property which is 200 to 800 and it also has low noise capability and maximum noise packer is 10dB which is quite interesting.
• As mentioned above BC177 is a general purpose PNP transistor therefore it can be used in variety of general purpose switching and amplifications purposes that falls under its specifications. As a switch it can be used to drive load of upto 100mA and as an amplifier it can be used in variety of low power audio amplifiers, audio amplifier stages and preamplifiers. In addition, the transistor has very good noise figure and DC current gain, so it can be used to amplify a variety of small signals with noise reduction.
• NPN Complementary: NPN Complementary of BC177 is BC107
• Replacement and Equivalent: BC556,  BC557, BC558, BC559, BC560

Applications:

• Audio amplifier Circuits
• Audio Preamplifier Circuits
• Small Signal Amplification
• Darlington pairs
• Radio Frequency Applications
• Switching loads under 100mA