BC858B Transistor 3K PNP 30V 100mA 300mW SOT-23

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SKU: IFT00181-28-1 Category: Brand:

BC858B Transistor is a general-purpose PNP junction transistor (BJT) designed for low-power switching and amplification in surface-mount applications. Packaged in a compact SOT-23 case, it offers moderate current handling, good gain, and is widely used in signal processing, control circuits, and consumer electronics.

Key Features:
  • PNP Polarity: Complements NPN devices like BC848 for push-pull configurations.
  • Low Collector-Emitter Voltage: Maximum VCE of 30V.
  • Decent Current Handling: Supports continuous collector current up to 100mA.
  • Good Power Dissipation: Rated up to 300mW total power at 25°C ambient.
  • Surface-Mount Package: Space-saving SOT-23 for high-density PCB layouts.
Technical Specifications:
  • Type: PNP BJT
  • Collector-Emitter Voltage (VCE): -30V
  • Collector Current (IC): -100mA (max)
  • Total Power Dissipation: 300mW
  • DC Current Gain (hFE): 200 – 450 (at IC = 2mA)
  • Transition Frequency (fT): 100MHz (typical)
  • Package: SOT-23
  • Mounting: Surface Mount (SMT)
Pin Configuration (SOT-23):
  • Pin 1: Base
  • Pin 2: Emitter
  • Pin 3: Collector
Schematic Diagram, Connection, Wiring and Pinout:
  • Configuration: Common emitter is most commonly used for amplification.
  • Wiring: Base connected via bias resistor, emitter to ground or negative rail.
  • Symbol: PNP transistor symbol with emitter arrow pointing toward base.
Datasheet and Documentation:
  • Download BC858B Transistor Datasheet (PDF)
Applications:
  • Signal Switching: Suitable for low-power analog and digital signal control.
  • Amplification: Used in low-frequency preamplifier and audio stages.
  • Logic Level Shifting: Acts as a level converter in interfacing applications.
  • Push-Pull Circuits: Complements BC848 in Class B or AB configurations.
  • Mobile & Portable Devices: Compact size ideal for handheld electronics.
Equivalent Models:
  • BC856B: Similar PNP transistor with slightly lower hFE range
  • MMBT2907A: General-purpose PNP in SOT-23 with higher current rating
  • S9012: Economical PNP surface mount transistor for similar applications
Package Includes:
  • 1 x BC858B Transistor 3K PNP 30V 100mA 300mW SOT-23

Additional information

Weight .1 g
PACKAGE

SOT-23

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BC858B Transistor 3K PNP 30V 100mA 300mW SOT-23

BC858B Transistor 3K PNP 30V 100mA 300mW SOT-23

2.00
You save

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