transistor bc558 pinout

 BC558 NPN Transistor pinout and Datasheet:

Pinout:

Collector (C)

Base (B)

Emitter (E)

BC558 NPN Transistor Datasheet

General Description: 

The BC558 is a widely used NPN bipolar junction transistor (BJT) designed for general-purpose amplification and switching applications. It belongs to the BC54x series of transistors and is commonly used in low-power amplifier circuits, signal amplification, and as a switch in various electronic devices.

Features:

NPN transistor with three-layer construction.

Low current (IC) and voltage (VCE) ratings.

High current gain (hFE).

Low saturation voltage.

RoHS compliant.

Electrical Characteristics (TA = 25°C unless otherwise specified):

1 Absolute Maximum Ratings:

Collector-Base Voltage (VCBO): 30 V

Collector-Emitter Voltage (VCEO): 30 V

Emitter-Base Voltage (VEBO): 5 V

Collector Current (IC): 100 mA

Total Device Dissipation (PD): 500 mW

Operating and Storage Junction Temperature Range (TJ, TSTG): -55°C to +150°C

2 Electrical Characteristics (TA = 25°C unless otherwise specified):

DC Current Gain (hFE): 100 - 800

Collector-Emitter Saturation Voltage (VCE(sat)): 0.25 V (IC = 10 mA, IB = 1 mA)

Base-Emitter Saturation Voltage (VBE(sat)): 0.7 V (IC = 10 mA, IB = 1 mA)

Collector Cut-off Current (ICBO): 10 nA (VCE = 30 V, IB = 0)

Emitter Cut-off Current (IEBO): 10 nA (VEB = 5 V, IC = 0)

Transition Frequency (fT): 100 MHz (IC = 10 mA, VCE = 20 V, f = 100 MHz)

Package Type:

TO-92 (Plastic Package)

 Typical Applications:

1 Small signal amplification.

2 Low-power audio amplification.

3 Signal switching and buffering.

4 Oscillator circuits.

5 Driver stages for transistors, relays, and other semiconductor devices.

Package Dimensions (TO-92):

Length (L): 15.5 mm (approx.)

Width (W): 4.5 mm (approx.)

Height (H): 4.5 mm (approx.)