Single-Pole, Normally Open OptoMOS Relay with Integrated Current Limit

Manufacturer's part number :


Manufacturer UK_IXY_SI


Description :

The CPC1540 is a normally open (1-Form-A) Solid State Relay with an integrated current limit feature that can replace electromechanical relays while enhancing the robustness of wireline-interface applications.

Designed specifically to target the hook switch telephony market, the CPC1540 has a load voltage rating of 350V.

The relay is constructed using a GaAIAs LED for actuation control and an integrated monolithic die for the switch output. The die, fabricated in a high-voltage dielectrically isolated technology, comprises a photodiode array, switch control with active current limiting circuitry, and MOSFET switches. Active current-limit circuitry in the CPC1540 provides a thermal shutdown feature, offering excellent power-cross immunity for improved survivability in harsh environments.

These enhancements greatly improve the robustness of end systems using this device compared to systems using relays without the integrated current limit. In addition, the active current limit circuitry enables the CPC1540 to pass FCC 68.302 and other regulatory voltage surge requirements when adequate overvoltage protection is provided. The CPC1540 relay may be used in both AC and DC applications.

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  • Integrated Active Current-Limit Protection
  • Thermal Shutdown
  • Guaranteed Turn-On: 2mA Input Control Current
  • 350VP Blocking Voltage
  • 3750Vrms Input/Output Isolation
  • Small Surface Mount Package
  • Low Drive Power Requirements (TTL/CMOS Compatible)
  • Arc-Free With No Snubbing Circuits
  • No EMI/RFI Generation
  • Machine Insertable, Wave Solderable
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Blocking Voltage (V) 350  
Load Current (mA) 120  
On Resistance (Ohms) 25  
Package DIP-6  
Operating temperature range (OC) -40 to 85°C