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BC557 SMD (BC857) PNP Transistor – General Purpose SOT-23
Specifications
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Transistor Type: PNP
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Technology: BJT (Bipolar Junction Transistor)
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Collector-Emitter Voltage (Vce): -45V
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Collector-Base Voltage (Vcb): -50V
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Emitter-Base Voltage (Veb): -5V
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Continuous Collector Current (Ic): -100mA
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Power Dissipation: 250mW
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DC Current Gain (hFE): 110 – 800 (A/B/C grades)
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Transition Frequency (fT): 100MHz (typical)
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Operating Temperature: -55°C to +150°C
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Package Type: SMD (SOT-23)
₹2.08 (Incl. GST)
149 in stock
149 in stock
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The BC557 SMD, commonly referred to as BC857, is a general-purpose PNP bipolar junction transistor designed for low-power switching and signal amplification in compact surface-mount circuits. It offers the same electrical characteristics as the BC557 through-hole version but in a small SOT-23 SMD package, making it ideal for modern PCB designs.
This transistor is widely used in embedded electronics, audio circuits, control boards, sensor interfaces, and battery-powered devices where space saving and reliability are important.
Applications
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Low-power switching circuits
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Signal and voltage amplification
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Audio pre-amplifier circuits
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Sensor interfacing
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Arduino & microcontroller projects
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Embedded and IoT devices
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Consumer electronics
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Power management circuits
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