{"product_id":"ntc-thermistor-mf52-1k-100k-b3950-temperature-sensor-5pack","title":"NTC Thermistor MF52 — 1K–100KΩ, ±5%, B3950, Through-Hole Temperature Sensor (5-Pack)","description":"\u003ch2\u003eNTC Thermistor MF52 — 1K–100KΩ, B3950, Through-Hole Temperature Sensor\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eMF52\u003c\/strong\u003e is a compact \u003cstrong\u003eNTC (Negative Temperature Coefficient) thermistor\u003c\/strong\u003e in a through-hole epoxy-coated package with flexible leads. As temperature increases, resistance decreases in a predictable manner described by the \u003cstrong\u003eB-value (B3950)\u003c\/strong\u003e — making it ideal for \u003cstrong\u003etemperature measurement and control\u003c\/strong\u003e in Arduino projects, 3D printers, HVAC systems, and industrial equipment. Available in resistance values from \u003cstrong\u003e1KΩ to 100KΩ\u003c\/strong\u003e at 25°C. Each pack contains \u003cstrong\u003e5 pieces\u003c\/strong\u003e.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eMF52\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance @ 25°C\u003c\/td\u003e\n\u003ctd\u003e1K \/ 2K \/ 5K \/ 10K \/ 20K \/ 47K \/ 100KΩ (select variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTolerance\u003c\/td\u003e\n\u003ctd\u003e±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB-Value (25\/50°C)\u003c\/td\u003e\n\u003ctd\u003e3950K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eThrough-hole, epoxy-coated bead\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLead Diameter\u003c\/td\u003e\n\u003ctd\u003e0.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLead Length\u003c\/td\u003e\n\u003ctd\u003e~30mm (flexible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-55°C to +125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDissipation Constant\u003c\/td\u003e\n\u003ctd\u003e~1mW\/°C (in still air)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e5 pieces per pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eWhy Choose MF52 NTC Thermistor?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh sensitivity\u003c\/strong\u003e — large resistance change per degree makes it easy to detect small temperature changes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eB3950 value\u003c\/strong\u003e — widely supported in Arduino libraries (Steinhart-Hart equation)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible leads\u003c\/strong\u003e — easy to position in tight spaces or embed in thermal mass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide temperature range\u003c\/strong\u003e — -55°C to +125°C covers most industrial and consumer applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10KΩ @ 25°C most popular\u003c\/strong\u003e — directly compatible with most Arduino temperature sensor circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-pack value\u003c\/strong\u003e — enough for multiple sensors or replacement stock\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArduino temperature sensing\u003c\/strong\u003e — voltage divider + ADC for temperature measurement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3D printer hotend \u0026amp; heated bed\u003c\/strong\u003e — 10K NTC thermistor is the standard sensor for most FDM printers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHVAC temperature control\u003c\/strong\u003e — room temperature sensing for thermostat circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery temperature monitoring\u003c\/strong\u003e — detect overheating in Li-ion battery packs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncubator \u0026amp; terrarium control\u003c\/strong\u003e — precise temperature regulation for biological applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor temperature protection\u003c\/strong\u003e — embed in motor windings for thermal cutoff\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eArduino Wiring (Voltage Divider)\u003c\/h3\u003e\u003cp\u003eConnect a \u003cstrong\u003e10KΩ fixed resistor\u003c\/strong\u003e in series between 3.3V\/5V and the thermistor, with the junction connected to an analog input pin. The other thermistor lead connects to GND. Use the \u003cstrong\u003eSteinhart-Hart equation\u003c\/strong\u003e or a lookup table with B=3950 to convert ADC reading to temperature. Many Arduino libraries (e.g., \u003ccode\u003eThermistor.h\u003c\/code\u003e) support B3950 directly.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Which resistance value should I choose for Arduino?\u003c\/strong\u003e\u003cbr\u003eA: \u003cstrong\u003e10KΩ\u003c\/strong\u003e is the most common choice for Arduino temperature sensing. It provides good sensitivity across -10°C to +80°C and is directly compatible with most Arduino thermistor libraries.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is MF52 10K the same as the 3D printer thermistor?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Most FDM 3D printers (Ender 3, CR-10, Prusa) use a 100K NTC thermistor with B3950 for the hotend. Select the 100K variant for 3D printer replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I use MF52 for measuring temperatures above 100°C?\u003c\/strong\u003e\u003cbr\u003eA: Yes, up to 125°C. However, accuracy decreases at temperature extremes. For hotend temperatures above 250°C, use a thermocouple instead.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003ePackage Contents\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e5× MF52 NTC Thermistor (resistance value as selected)\u003c\/li\u003e\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"5K","offer_id":46991476130027,"sku":"696:203121853#5K","price":4.0,"currency_code":"USD","in_stock":true},{"title":"47K","offer_id":46991476162795,"sku":"696:203124838","price":4.0,"currency_code":"USD","in_stock":true},{"title":"50K","offer_id":46991476195563,"sku":"696:203125817#50K","price":4.0,"currency_code":"USD","in_stock":true},{"title":"3K","offer_id":46991476228331,"sku":"696:203122918","price":4.0,"currency_code":"USD","in_stock":true},{"title":"4.7K","offer_id":46991476261099,"sku":"696:203124837","price":4.0,"currency_code":"USD","in_stock":true},{"title":"2K","offer_id":46991476293867,"sku":"696:203122942","price":4.0,"currency_code":"USD","in_stock":true},{"title":"20K","offer_id":46991476326635,"sku":"696:203122943","price":4.0,"currency_code":"USD","in_stock":true},{"title":"10K","offer_id":46991476359403,"sku":"696:203122953","price":4.0,"currency_code":"USD","in_stock":true},{"title":"100K","offer_id":46991476392171,"sku":"696:203122954","price":4.0,"currency_code":"USD","in_stock":true},{"title":"1k","offer_id":46991476424939,"sku":"696:201215958","price":4.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/ntc-thermistor-mf52-thermal-resistor-1k-100k-3950b.webp?v=1761630305","url":"https:\/\/keszoox.com\/products\/ntc-thermistor-mf52-1k-100k-b3950-temperature-sensor-5pack","provider":"Keszoox","version":"1.0","type":"link"}