{"product_id":"ds18b20-original-temperature-sensor-accurate-digital-thermometer","title":"DS18B20 Original Temperature Sensor – Accurate Digital Thermometer","description":"\u003ch1\u003eDS18B20 Original Temperature Sensor – Digital Thermometer IC\u003c\/h1\u003e\n\n\u003cp\u003eThe DS18B20 is a digital temperature sensor from Maxim Integrated that communicates over a 1-Wire interface. It provides 9-bit to 12-bit Celsius temperature measurements and has a wide operating range from -55°C to +125°C with ±0.5°C accuracy from -10°C to +85°C. Its unique 64-bit serial code allows multiple sensors to be connected on the same data line, making it ideal for distributed sensing applications.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e3.0V to 5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-55°C to +125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAccuracy (-10°C to +85°C)\u003c\/td\u003e\n\u003ctd\u003e±0.5°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e9 to 12 bits (user configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003e1-Wire (Maxim\/Dallas protocol)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePackage Type\u003c\/td\u003e\n\u003ctd\u003eTO-92 (original through-hole)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-indoor-weather-station\"\u003eDIY weather station with multiple outdoor sensors\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eHome thermostat using Arduino and a relay\u003c\/li\u003e\n  \u003cli\u003eIndustrial process monitoring with Raspberry Pi\u003c\/li\u003e\n  \u003cli\u003eTemperature logger with SD card storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe DS18B20 works with any 3.3V or 5V microcontroller board, including Arduino Uno, Mega, Nano, ESP8266, ESP32, and Raspberry Pi. It requires only one digital pin for communication and can share the bus with other 1-Wire devices. The sensor is often used with the DallasTemperature or OneWire libraries in Arduino IDE.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect the VDD pin to 3.3V or 5V, GND to ground, and the DQ (data) pin to any digital I\/O on your microcontroller. A 4.7kΩ pull-up resistor between DQ and VDD is required for reliable operation. For long cable runs, consider using a shielded twisted-pair cable and a lower resistance value.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the DS18B20 is fully compatible with Arduino boards. Simply connect it to a digital pin, use a 4.7k pull-up resistor, and install the DallasTemperature library. Multiple sensors can share the same pin.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use this sensor without external power?\u003c\/summary\u003e\u003cp\u003eThe DS18B20 supports parasitic power mode where it draws power from the data line. However, for temperatures above 100°C or when using long wires, external power is recommended to ensure stable operation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this the waterproof version?\u003c\/summary\u003e\u003cp\u003eThis is the original TO-92 package sensor, not the pre-assembled waterproof probe. You can easily waterproof it yourself using heat shrink tubing and silicone sealant if needed for wet environments.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445023203693,"sku":"CDN-0751","price":40.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_7048abd6-7187-4365-ad46-6727f84466d8.jpg?v=1781512885","url":"https:\/\/compoden.com\/products\/ds18b20-original-temperature-sensor-accurate-digital-thermometer","provider":"Compoden","version":"1.0","type":"link"}