Name: BC557 PNP Transistor
SKU: 13401
Price: 15.00 ETB
Availability: InStock

BC557 PNP Transistor

Br 15.00

The BC557 is a versatile PNP bipolar junction transistor widely used in electronic circuits. With its low noise and high current gain, it’s ideal for applications requiring amplification, switching, or voltage regulation.
Package Type: TO-92
Transistor Type: PNP
Max Collector Current(I_C): -100mA
Max Collector-Emitter Voltage (V_CE): -45V
Max Collector-Base Voltage (V_CB): -50V
Max Emitter-Base Voltage (VBE): -5V
Max Collector Dissipation (Pc): 0.5 mW
Max Transition Frequency (fT): 100 MHz
Minimum & Maximum DC Current Gain (h_FE): 200-450
Max Storage & Operating temperature Should be: -65 to +150Centigrade

BC557 is a PNP transistor hence the collector and emitter will be closed (Forward biased) when the base pin is held at ground and will be opened (Reverse biased) when a signal is provided to base pin. This is where a PNP transistor differs from a NPN transistor, a Logic state (blue colour) is used to toggle between Ground and Signal Voltage (Emitter-Base Voltage V_BE)
Here are some of the transistors that can be used as BC557 transistor replacements:�BC157, BC558, 2N3906, 2SA1943, BD140, S8550, TIP127, TIP42
NPN Complementary: NPN Complementary of BC557 is BC547

Difference between BC557A , BC557B and BC557C

The major difference between these variants is that they offer different gain(hfe). While the BC557A variant offers the lowest gain of 110 to 200, the BC557B offers a gain of 200-450 and the BC557C gives the highest gain of 450-800.

Application