The LFXTAL084049RL3K is a Iqd product designed for electronic applications. It features compact design with reliable performance characteristics suitable for various industrial and consumer applications.<\/p>\n
| \u7c7b\u578b<\/td>\n | Quartz Crystal (kHz Tuning Fork)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| Frequency<\/td>\n | 32.768 kHz<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| Frequency Tolerance<\/td>\n | +\/- 20 ppm at 25C<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| Load Capacitance<\/td>\n | 12.5 pF<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| ESR (Equivalent Series Resistance)<\/td>\n | 70 kOhm (Typ)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| Motional Capacitance<\/td>\n | 3.4 fF (Typ)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| Shunt Capacitance<\/td>\n | 1.0 pF (Typ)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| Drive Level<\/td>\n | 0.1 uW (Typ), 0.5 uW (Max)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| Parabolic Coefficient<\/td>\n | -0.04 ppm\/C2<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| Turnover Temperature<\/td>\n | 25 +\/-5 C<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| Aging (First Year)<\/td>\n | +\/- 3 ppm (Max)<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| \u5de5\u4f5c\u6e29\u5ea6<\/td>\n | -40 C to +85 C<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| \u5305\u88c5<\/td>\n | SMD 3.2 x 1.5 x 0.9 mm<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| Series<\/td>\n | CFPX-217 \/ IQXC-217<\/td>\n<\/tr>\n | |||||||||||||||||||||||||||||||||||||
| \u5305\u88c5<\/td>\n | Tape and Reel (3K units)<\/td>\n<\/tr>\n<\/table>\n\u7279\u70b9<\/h2>\n32.768 kHz tuning fork crystal in ultra-compact 3.2 x 1.5 mm SMD package; Industry-standard FC-135 equivalent footprint; +\/-20 ppm frequency tolerance; 12.5 pF load capacitance; 70 kOhm typical ESR; Low profile 0.9mm max height; Low aging of +\/-3 ppm per year; Tape and reel packaging for automated assembly; RoHS compliant; Compatible with standard RTC oscillator circuits<\/p>\n \u5e94\u7528<\/h2>\nReal-time clock (RTC) circuits; Microcontroller sub-clock oscillators; Wearable devices and smartwatches; IoT sensor nodes; Battery-powered portable electronics; Automotive body electronics; Smart meters; Home automation devices<\/p>","protected":false},"excerpt":{"rendered":" Product Overview The LFXTAL084049RL3K is a Iqd product designed for electronic applications. It features compact design with reliable performance characteristics suitable for various industrial and consumer applications. Key Specifications Type Quartz Crystal (kHz Tuning Fork) Frequency 32.768 kHz Frequency Tolerance +\/- 20 ppm at 25C Load Capacitance 12.5 pF ESR (Equivalent Series Resistance) 70 kOhm […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[14,13],"tags":[1481],"chip_brand":[1031],"class_list":["post-10218","post","type-post","status-publish","format-standard","hentry","category-clock-timing-ics","category-integrated-circuits-ics","tag-lfxtal084049rl3k","chip_brand-iqd"],"acf":{"brief_explanation":"32.768kHz quartz crystal, CFPX-217, 3.2x1.5mm, 12.5pF, 20ppm, -40 to 85C, reel packaging","date_code":"","package_case":"SMD 3.2 x 1.5 x 0.9 mm (CFPX-217 \/ IQXC-217)","in_stock":12390,"datasheet":"https:\/\/www.iqdfrequencyproducts.com\/products\/quartz-crystals\/cfpx-217\/","price":"$0.40 @ 1ku","product_introduction":"The LFXTAL084049RL3K from IQD Frequency Products (Wurth Elektronik group) is a 32.768 kHz quartz crystal resonator in the CFPX-217 (IQXC-217) series, housed in an ultra-compact 3.2 x 1.5 x 0.9 mm SMD package. This tuning fork crystal provides the standard 32.768 kHz frequency used as the timebase for real-time clock (RTC) circuits and microcontroller sub-clock oscillators. With a frequency tolerance of +\/-20 ppm at 25C and a load capacitance of 12.5 pF, it is a direct footprint-compatible equivalent to the Epson FC-135 and other industry-standard 3215 kHz crystals. The typical ESR of 70 kOhm and drive level of 0.1uW make it compatible with most MCU integrated oscillator circuits. The RL3K suffix indicates tape and reel packaging with 3,000 units per reel, suitable for automated SMT assembly. The device operates from -40C to +85C with low aging of +\/-3 ppm per year, ensuring long-term timekeeping accuracy.","working_principle":"The LFXTAL084049RL3K operates as a tuning fork quartz crystal resonator using the piezoelectric effect of a quartz blank cut at a specific crystallographic orientation to produce mechanical resonance at exactly 32.768 kHz (2^15 Hz). When an AC voltage is applied across the crystal terminals, the quartz element vibrates mechanically at its natural resonant frequency due to the inverse piezoelectric effect. The mechanical vibration generates a corresponding electrical signal through the direct piezoelectric effect, creating a highly stable and precise frequency reference. The 32.768 kHz frequency is specifically chosen because dividing it by 2^15 yields exactly 1 Hz, which is the fundamental timebase for real-time clock circuits. The tuning fork geometry provides a small temperature coefficient described by a parabolic curve centered at the turnover temperature (approximately 25C), with a parabolic coefficient of -0.04 ppm\/C2. This means the frequency varies symmetrically around the turnover temperature, and the maximum deviation at -40C or +85C is approximately -144 ppm from the peak frequency. In a Pierce oscillator circuit (the most common MCU crystal oscillator), the crystal operates in parallel resonance mode, and the external load capacitors (together with the specified 12.5 pF load capacitance) set the exact oscillation frequency.","pin_description":"
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