BC177 Low Power PNP Transistor: Datasheet pdf, Pinout and Equivalents
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BC177B datasheet pdf and Unclassified product details from NEW JERSEY SEMICONDUCTOR PRODUCTS INC stock available at Utmel









The BC177 is a Silicon PNP Bipolar Planar Epitaxial Transistor with low power. This article mainly covers datasheet pdf, pinout, equivalents, features, and other details about BC177 transistor.
BC177 Description
The BC177 is a TO-18 metal-cased silicon planar epitaxial PNP transistor. It can be found in television receivers' driver stages, low-noise input stages, and signal processing circuits. The VCE of this transistor is -50V, and the continuous collector current is -100mA. It can be used as a signal switching transistor for small signals. It has a -5V base voltage as well.
BC177 Pinout

BC177 Pinout
| Pin Number | Pin Name | Description |
| 1 | Base | Controls the biasing of the transistor |
| 2 | Collector | Electrons Emitted from Emitter Collected by the Collector |
| 3 | Emitter | Electrons emitted from the emitter into the first PN junction |
BC177 CAD Model

BC177 Footprint
BC177 Specifications
| Transistor Polarity | PNP |
| Collector-Base Voltage (VCBO) | 50V |
| Collector-Emitter Voltage (VCEO) | 45V |
| Emitter-Base Voltage (VEBO) | 5V |
| Continuous Collector Current (IC) | 0.2A |
| Output Capacitance (Cobo) | 4pF |
| Transition Frequency (fT) | 200MHz |
| DC Current Gain (hFE) | 120-460 |
| Operating Temperature Range | -65 - 200°C |
| Power Dissipation (PD) | 1W |
BC177 Features
Metal TO-18 can package
Advanced process technology
Low error voltage
Fast switching speed
Full-voltage operation
High power and current handling capability
Equivalents for BC107
NTE159M, BC107, MMBT3904, BC107, BC177A, BC177B, 2SA1218, BC266, BC291, BC292, BC477, BCY71, BCY77, BC556, BC557, BC558, BC559, BC560
BC177 Applications
Lighting systems
Relay drivers
Simple switching applications
Microphone preamplifiers
Audio Preamplifier Circuits
Audio Amplifiers
Signal Amplifiers
BC177 Working
A PNP junction transistor is a sandwiched construction of P-type material with an N-type material in the center. The BC177 transistor is a general-purpose PNP transistor. Transistors are classified into two groups based on their construction: NPN transistors and PNP transistors, as shown below.

BC177 Working Diagram
Where and how to use BC177 transistor?
Because BC177 is a general-purpose PNP transistor, it can be utilized for a wide range of general-purpose switching and amplification applications that fall within its specifications. It can drive a load of up to 100mA as a switch, and as an amplifier, it can be utilized in a variety of low-power audio amplifiers, stages, and preamplifiers. Furthermore, because the transistor has a low noise figure and high DC gain, it can be utilized to enhance a variety of tiny signals while reducing noise.
BC177 Dimensions

BC177 Dimensions
BC177 Manufacturer
New Jersey Semiconductor has been designing, manufacturing, and producing highly reliable electronic devices since 1957. Our mission is to supply you with high-quality, cost-effective discrete devices for commercial, industrial, and military applications.
What is the use of BC177?
The BC177 is a silicon Planar Epitaxial PNP transistor in the TO-18 metal case. It is suitable for use in driver stages, low noise input stages, and signal processing circuits of television receivers. The NPN complementary type is BC107
What is the hFE value of BC177?
120hFE
What is the current of BC177?
This transistor comes with a VCE of -50V and a continuous collector current of -100mA.
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