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 |
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