EMTECH SOLUTION - AHMEDABAD

DC TO DC Solid State Relay

Salient Features:

  • RDS (ON) Has positive temperature co-efficient which aids in paralleled power MOSFET device And Negative temperature co-efficient of trans conductance. So less susceptible for thermal Runway
  • Power (PD) increase with case temperature increase.
  • Junction temperature increases with RDS will increased
  • Switching speed are inherently faster
  • No need to derating power handing capacity
  • Turn ON/OFF time more than 10 mili second than
  • Across the load suppression diode require for inductive load
  • Input LED indication/Output off led indication
  • N/O configuration only
  • Input-output-body lsolation2.5KVA
  • Glass filled nylon

Advantages:

  • Contact less Logic Relay with Switching Function Performed by Semiconductor Device
  • Virtually Free Electromagnetic Interference and Radio Frequency Interference
  • No Moving Contacts So No Acoustic Noise
  • Dustproof, Immunity to Humidity, No effect of Alkaline / Acidic Atmosphere
  • No Moving Contacts So No Acoustic Noise
  • Dustproof, Immunity to Humidity, No effect of Alkaline / Acidic Atmosphere
  • High Speed And High Frequency Switching
  • Shock And Vibration Resistance
  • Longer Life Due to Infinite Number of Switching

Precautions:

  • For Load Current More Than 3Amp External Heat sink is Must
  • Apply Heat sink Pest On the Base Plate of the SSR Before Mounting it on External Heat sink
  • Fast Acting Fuse Require For Protection Of SSR
  • SSR Rating Should Be More or Equal to Maximum Jerk Current of Load
  • For Additional Transient Over Voltage Protection Add MOV
  • Do Not Check SSR by Meter OR Continuity Tester, otherwise, It will Always Shows OPEN

Applications:

  • Microprocessor Based Control
  • Traffic Signal Controls
  • ON / OFF of Solenoid Valve
  • CNC Machine Control
  • Switching of Contractors
  • Medical Equipments
  • Business Machines
  • Primary Transformer Control 
  • Photography Process Equipments
  • Automatic Vending Machine

 

DIFFERENCE OF POWER MOSFET AND TRANSISTOR
POWER MOSFET TRANSISTOR
High speed on/off (high frequency) Low speed on/off
High power capacity Low power capacity
Voltage drop across power MOSFET is less Voltage drop across transistor is more
Size of heat sink less Size of heat sink more
DC TO DC Solid State Relay

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