Datasheet

50RIA120S90 Datasheet PDF – 1200V, 50A, SCR, Thyristor

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Part Number: 50RIA120S90

Function: 1200V, 50A, Medium Power Phase Control Thyristor

Package: TO-65 ( TO-208AC )

Manufacturer: Vishay Semiconductors

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50RIA120S90 datasheet

Description

The 50RIA120S90 is a high-power thyristor (SCR) designed for demanding power control applications, featuring a 50A average current rating and 1200V blocking voltage. It offers robust surge capability and excellent dynamic performance, making it suitable for phase-controlled rectification and industrial power regulation systems. The device is typically housed in a stud-mounted package, allowing efficient thermal management and mechanical stability.

Features

  • Excellent dynamic characteristics for switching performance
  • High dV/dt capability (up to 1000 V/µs option)
  • Superior surge current handling capability
  • Stud-type package for efficient heat dissipation
  • Available in metric thread versions
  • Suitable for high-reliability industrial applications

Absolute Maximum Ratings

Parameter Symbol Value Unit
Repetitive Peak Off-State Voltage VDRM, VRRM 1200 V
Average On-State Current IT(AV) 50 A
Surge Current (Non-repetitive) ITSM ~600 A
Critical Rate of Rise of Off-State Voltage dV/dt 1000 V/µs
Operating Junction Temperature TJ -40 ~ +125 °C

Typical Circuit Usage

  • Phase-controlled rectifiers (AC-DC conversion)
  • AC power control (light dimmers, heaters)
  • Motor speed control circuits
  • Battery charging systems
  • Soft-start circuits for high-power loads

How to Choose This Part

  • Select based on required current (≤50A) and voltage (≤1200V)
  • Evaluate surge current capability for inductive loads
  • Consider switching speed and dV/dt requirements
  • Ensure compatibility with gate drive circuitry
  • Compare with IGBT or MOSFET solutions for high-frequency applications

Applications

  • Phase control converters
  • Lighting control circuits
  • Battery chargers
  • Regulated power supplies
  • Temperature and motor speed control systems

Alternative / Equivalent Products

  • TYN1225 – 1200V thyristor (lower current)
  • SKT50 series – SEMIKRON stud thyristors
  • 2N6509 – General-purpose SCR
  • BT152 – Medium power thyristor
  • IRKT56 – Dual thyristor module

Other data sheets are available within the file:

50RIA100S90M, 50RIA120S90, 50RIA120S90M, 50RIA20S90M, 50RIA40S90M

 

50RIA120S90 Datasheet PDF Download


50RIA120S90 pdf

C-MH-18-790A-CM Datasheet PDF – DC Motor Controller

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Part Number: C-MH-18-790A-CM

Function: DC Motor controller / No IR Module Required

Manufacturer: Electrol

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C-MH-18-790A-CM datasheet

Description

C-MH-18-790A-CM is a DC motor controller designed for multiple horsepower applications, supporting dual voltage operation with a 12A continuous current rating when properly heat-sinked. It incorporates SCR-based control, soft-start functionality, and precise speed regulation with adjustable parameters for torque, acceleration, and speed range. This controller is typically used with DC motors and gearmotors in industrial and commercial motion control systems.

Features

  • Dual voltage operation for 90V and 180V DC motor applications
  • 12A continuous current rating with appropriate heat sinking
  • 2% base speed regulation with line voltage compensation
  • Wide 50:1 speed range with constant torque capability
  • Soft-start circuitry for reduced mechanical stress
  • Integrated transient and surge protection
  • SCR-based discrete power components for improved heat dissipation
  • Power ON/OFF switch and status indication (enclosed models)
  • Includes 5kΩ, 5W speed control potentiometer
  • Flexible connection via screw terminal or plug-in terminal options

Design Notes

  • External heat sink is required for high horsepower applications to maintain thermal stability
  • Proper adjustment of IR compensation is critical for maintaining constant speed under varying loads
  • Ensure adequate ventilation when used in enclosed systems
  • Line voltage compensation helps maintain stable motor performance under supply variations
  • Use proper fuse protection and wiring practices for safety compliance

Typical Circuit Usage

  • DC motor speed control systems
  • Industrial conveyor and material handling equipment
  • Gearmotor-driven automation systems
  • Variable speed drives in machinery

How to Choose This Part

  • Select based on required motor voltage (90V or 180V DC)
  • Ensure current rating matches motor load requirements
  • Consider thermal management for continuous high-load operation
  • Suitable for applications requiring wide speed control range with stable torque

Applications

  • Industrial motor control systems
  • Packaging and processing machinery
  • Automation and motion control equipment
  • Commercial motor-driven devices

Alternative / Equivalent Products

  • KB Electronics KBIC series
  • Minarik MM series DC drives
  • Dart Controls 125 series
  • MC-60 motor controller

Reference World_Class_790A PDF :
pdf

Other data sheets are available within the file: CMH18790CM, CMH-18-790A-CM, C-MH-XB-790A-E

C-MH-18-790A-CM Datasheet PDF Download


C-MH-18-790A-CM pdf