BT152-800R,127: Overview,parameter,Main uses,Features,application fields,working principle and alternative models


BT152-800R,127 Thyristor Detailed Introduction:


The BT152-800R,127 is a high-voltage Silicon Controlled Rectifier (SCR) or thyristor designed for medium to high-power switching applications, offering controlled conduction of electrical currents.



  • Voltage Rating: Maximum voltage the thyristor can handle.
  • Current Rating: Maximum current the thyristor can conduct.
  • Gate Trigger Voltage: Voltage required to turn on the thyristor.
  • Gate Trigger Current: Current required to initiate conduction.
  • Repetitive Peak Off-State Voltage: Maximum reverse voltage the thyristor can block.
  • Repetitive Peak Forward Blocking Current: Maximum forward blocking current.
  • DataSheet

    BT152-800R,127 PDF

Main Uses:

  • Power Control: Used in switching and regulating power to various electrical loads.
  • Heating Systems: Controlling heating elements in appliances and industrial equipment.
  • Motor Speed Control: Varying the speed of motors in machinery and devices.
  • Light Dimming: Adjusting light intensity in lighting applications.


  • High Voltage Handling: Designed for medium to high-voltage applications.
  • Reliable Switching: Offers controlled switching of AC or DC loads.
  • Overcurrent Protection: Safeguards against excessive current flow.
  • Fast Turn-On and Turn-Off: Enables precise control of power flow.
  • High Surge Current Capability: Ability to handle sudden spikes in current.

Application Fields:

  • Industrial Equipment: Power control in machinery, equipment, and automation systems.
  • Lighting Systems: Dimming circuits in residential, commercial, and industrial lighting.
  • Heating Control: Regulating temperature in ovens, furnaces, and heating appliances.
  • Power Supplies: Switching and controlling power in various electronic devices.

Working Principle:

  • Conduction Control: The thyristor conducts current when triggered by a gate signal.
  • Gate Triggering: Application of a sufficient voltage or current to the gate initiates conduction.
  • Maintained Conduction: The thyristor remains conducting until the current falls below a specific level.
  • Off State: The thyristor blocks current until triggered to conduct again.

Alternative Models:

  • BT151-800R: Similar high-voltage SCR alternative with comparable specifications.
  • BT169D: Lower-power thyristor suitable for specific control applications.
  • C106D: General-purpose thyristor with various applications in electronics.

The BT152-800R,127 SCR is a robust component for medium to high-power switching applications, commonly found in industrial equipment, power control systems, and lighting circuits. Alternative models such as the BT151-800R or BT169D offer variations in specifications for different application requirements. Consulting datasheets and technical specifications can aid in selecting the most suitable thyristor for specific power management and control needs.