Crystal Units NX3215SB For Mobile Communications n Features Ultra compact, thin, and light weight tuning fork crystal unit. lExcellent heat resistance and environmental characteristics. lExcellent electric performance optimum for mobile communications, OA (office automation), AV (audiovisual) and Automotive applications are exhibited. lRoHS compliant. These can meet the requirements of re-flow profiling using lead-free solder. lUse a metal lid: Excellent shock resistance during chip mounting process comparing to a glass lid. n Specifications Model Item NX3215SB 32.768kHz Nominal Frequency −40 to +85℃ Operating temperature (℃) Storage temperature (℃) −40 to +85℃ Recommended drive leve 0.1µW (0.5µW Max.) ±20 × 10−6 Frequency Tolerance (25 ±3 ℃) +25℃ ± 5℃ Turning point −0.04 × 10−6/ ℃2 Max. Temperature coefficient Load capacitance 9.0pF, 12.5pF Series resistance 80kΩ Max. Shunt capacitance 1pF typ./ 1.5pF Max. 500MΩ Min. Insulation resistance n List of Ordering Codes Load capacitance Ordering Code 9.0pF 12.5pF NX3215SB-32.768K-STD-MUA-7 NX3215SB-32.768K-STD-MUA-6 n Dimensions 3.2±0.1 mm 1.5±0.1 Internal connections (TOP VIEW) #2 0.55±0.05 #1 Reference land pattern 1.6 #2 #1 2 1 1.55 1 0.6 3.6 tf01_090610_nx3215sb_e