{"product_id":"1-channel-pc817-optocoupler-isolation-module-3-5v-input","title":"1 Channel PC817 Optocoupler Isolation Module - 3-5V Input","description":"\u003cp\u003eThis 1-channel optocoupler isolation module uses the PC817 (EL817) photoelectric isolator to electrically separate your microcontroller or logic circuit from higher-voltage or higher-current loads. It's built for signal isolation, level shifting, and protecting sensitive MCU inputs and outputs from noise, back-EMF, and voltage spikes when driving inductive loads such as relays and motors.\u003c\/p\u003e\n\u003ch2\u003eCommon Uses\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIsolating MCU outputs (Arduino, ESP32, ESP8266, Raspberry Pi, AVR, ARM) when driving relays, motors, or other inductive loads\u003c\/li\u003e\n\u003cli\u003eLevel shifting between low-voltage logic and higher-voltage circuits, such as 24V PLC inputs\u003c\/li\u003e\n\u003cli\u003eDetecting higher-voltage sensor signals safely on a lower-voltage MCU input\u003c\/li\u003e\n\u003cli\u003eSignal inversion between input and output\u003c\/li\u003e\n\u003cli\u003eCurrent amplification where MCU output current is too low to drive a downstream circuit directly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptocoupler chip\u003c\/td\u003e\n\u003ctd\u003ePC817 (EL817)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput signal voltage\u003c\/td\u003e\n\u003ctd\u003eDC 3V–5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput signal voltage\u003c\/td\u003e\n\u003ctd\u003eDC 1.8V–24V (wide range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax input current\u003c\/td\u003e\n\u003ctd\u003e50mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax output current\u003c\/td\u003e\n\u003ctd\u003e50mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation voltage\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;3000V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax signal frequency\u003c\/td\u003e\n\u003ctd\u003e5KHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-55°C to 110°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal type\u003c\/td\u003e\n\u003ctd\u003e5.0mm pitch screw terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhy Optocoupler Isolation\u003c\/h2\u003e\n\u003cp\u003eOptocoupler isolation keeps your control circuit electrically separate from the load circuit, so voltage spikes, noise, or faults on the load side can't feed back into your MCU. This is standard practice when switching relays, motors, or other inductive loads from logic-level outputs.\u003c\/p\u003e\n\u003ch2\u003eSchematic\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0870\/0021\/9940\/files\/PC817-schematic-zaitronics.avif?v=1790414026\" alt=\"PC817 1-channel optocoupler module schematic\"\u003e\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eWorks with Arduino, ESP32, ESP8266, Raspberry Pi, AVR, ARM, and PLC systems operating at 3.3V or 5V logic level.\u003c\/p\u003e","brand":"Zaitronics","offers":[{"title":"Default Title","offer_id":67558107152676,"sku":"Z0891","price":6.3,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0870\/0021\/9940\/files\/S0b11bf14fdb746868832935c6df3530dZ_jpg_960x960q75_jpg.avif?v=1790414492","url":"https:\/\/zaitronics.com.au\/products\/1-channel-pc817-optocoupler-isolation-module-3-5v-input","provider":"Zaitronics","version":"1.0","type":"link"}