# CPC1709J (Component) ## Description IXYS Integrated Circuits brings OptoMOS® technology, reliability and compact size to a new family of high-power Solid State Relays. As part of this family, the CPC1709J single-pole normally open (1-Form-A) DC Solid State Power Relay employs optically coupled MOSFET technology to provide 2500Vrms of input to output isolation. The output, constructed with an efficient MOSFET switch and photovoltaic die, uses IXYS Integrated Circuits’ patented OptoMOS architecture while the input, a highly efficient infrared LED, provides the optically coupled control. The combination of low on-resistance and high load current handling capability makes this relay suitable for a variety of high performance DC switching applications. The unique ISOPLUS-264 package pioneered by IXYS enables Solid State Relays to achieve the highest load current and power ratings. This package features a unique IXYS process where the silicon chips are soft soldered onto the Direct Copper Bond (DCB) substrate instead of the traditional copper leadframe. The DCB ceramic, the same substrate used in high power modules, not only provides 2500Vrms isolation but also very low junction-to-case thermal impedance (0.3 °C/W). Features • 22.8ADC Load Current with 5°C/W Heat Sink • Low 0.05 On-Resistance • 60VP Blocking Voltage • 2500Vrms Input/Output Isolation • Low Thermal Impedance: JC = 0.3 °C/W • Isolated, Low Thermal Impedance Ceramic Pad for Heat Sink Applications • Low Drive Power Requirements • No EMI/RFI Generation Applications • Industrial Controls / Motor Control • Robotics • Medical Equipment—Patient/Equipment Isolation • Instrumentation • Multiplexers • Data Acquisition • Electronic Switching • I/O Subsystems • Meters (Watt-Hour, Water, Gas) • Transportation Equipment #CPC1709J #IXYS #Littelfuse #SolidStateRelay #SSR #OptoMOS #PowerRelay #DCRelay #MOSFETRelay #HighCurrentSwitching #ElectricalIsolation #IndustrialElectronics #PowerManagement #BatterySystems #AutomationControl ## Component Details - **Owner:** adrian95 - **Created:** 6/16/2026 - **Last Updated:** 6/16/2026 - **Visibility:** Public - **Manufacturer Name:** IXYS Integrated Circuits Division - **Part Type:** Relay - **License:** https://creativecommons.org/licenses/by/4.0/ - **Manufacturer Part Number:** CPC1709J - **Datasheet URL:** https://www.littelfuse.com/assetdocs/littelfuse-integrated-circuits-cpc1709j-datasheet?assetguid=542a0e2b-9dbe-4c28-83b0-704319326024 ## Distributor Pricing (qty 1) *Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.* | Distributor | Unit Price (qty 1) | Stock | |------------|--------------------|-------| | [Arrow](https://www.arrow.com/en/products/cpc1709j/littelfuse.html?utm_currency=USD&region=nac) | N/A | N/A | - **Part Type:** Electromechanical Components - **Manufacturer:** Littelfuse - **MPN:** CPC1709J - **Mount Type:** Solder - **Package / Case Code:** TO - **Pin Count:** 4 ## Pins | Pin | Name | Type | |-----|------|------| | 1 | 1 | | | 2 | 2 | | | 3 | 3 | | | 4 | 4 | | --- *Generated from [https://www.flux.ai/adrian95/cpc1709j](https://www.flux.ai/adrian95/cpc1709j)*