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KST42MTF - onsemi

Description: Obsolete - NPN Epitaxial Silicon Transistor

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KST42MTF - onsemi - PCB symbol
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PCB Footprints
KST42MTF - onsemi PCB footprint - SOT23 (3-Pin) - SOT23 (3-Pin) - SOT−23 CASE 318BM ISSUE A
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3D Models
KST42MTF - onsemi - 3D model - SOT23 (3-Pin) - SOT−23 CASE 318BM ISSUE A
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KST42MTF Details

  • Manufacturer Part Number:

    KST42MTF

  • Brand Name:

    onsemi

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOT-23-3

  • Manufacturer Package Code:

    318BM

  • ECCN Code:

    EAR99

  • Manufacturer:

    onsemi

  • YTEOL:

    0

  • Collector Current-Max (IC):

    0.5 A

  • Collector-Emitter Voltage-Max:

    300 V

  • Configuration:

    SINGLE

  • DC Current Gain-Min (hFE):

    40

  • JESD-30 Code:

    R-PDSO-G3

  • JESD-609 Code:

    e3

  • Moisture Sensitivity Level:

    1

  • Number of Elements:

    1

  • Number of Terminals:

    3

  • Operating Temperature-Max:

    150 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Polarity/Channel Type:

    NPN

  • Power Dissipation-Max (Abs):

    350 W

  • Qualification Status:

    Not Qualified

  • Surface Mount:

    YES

  • Terminal Finish:

    MATTE TIN

  • Terminal Form:

    GULL WING

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Transistor Element Material:

    SILICON

  • Transition Frequency-Nom (fT):

    50 MHz

KST42MTF Frequently Asked Questions (FAQs)

  • The recommended operating voltage range for the KST42MTF is 4.5V to 18V, although it can tolerate up to 20V for short periods.
  • To ensure proper biasing, connect the base to the emitter through a resistor (Rb) and connect the collector to the positive supply voltage through a resistor (Rc). The values of Rb and Rc depend on the specific application and desired performance.
  • The KST42MTF can handle a maximum continuous collector current of 1A, and a peak current of 2A for short periods.
  • To prevent overheating, ensure good heat sinking, use a heat sink with a thermal resistance of 10°C/W or less, and keep the junction temperature below 150°C.
  • Yes, the KST42MTF can be used in switching applications, but ensure that the switching frequency is within the recommended range (up to 100 kHz) and that the device is properly biased and heat-sinked.

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