Crystal Units NX2520SG For Automotive ■ Features Crystal Unit with built-in Thermistor construction for automotive. ● Placing temperature sensor(Thermistor) close to Crystal blank in one airtight housing can detect more precise crystal blank temperature. Improvement on frequency temperature compensation compared to present Crystal unit. ● It is ideal for applications such as vehicle communication equipment and car navigation systems. ● Meets the requirements for re-flow profiling using lead-free solder. ● Conforms to AEC-Q200. ■ Specifications Model Item Nominal Frequency NX2520SG 16 to 80 MHz Overtone Order Fundamental Frequency Tolerance (25°C ) ±10 × 10−6 Frequency versus Temperature Characteristics (with reference to +25 °C) ±25 × 10−6 *1 Operating Temperature Range −40 to +105 °C Storage Temperature Range −40 to +105 °C Equivalent Series Resistance Refer to *2 Level of Drive 10 μW (Max. 100 μW) Load Capacitance 7 pF *1: In the case of 19.2M is with reference to +30°C. NTC Thermistor for Temperature Sensor Resistance [R25] 100k Ω ± 1 % B-Constant [B25-50] 4250K ± 1 % ■ Dimensions mm 2.5±0.1 #3 2.0.±0.1 #4 Terminal land connections (TOP VIEW) #4 #1 #3 #2 #1 Nominal frequency (MHz) Equivalent Series Resistance max. [Ω] 16 to 19.2 120 19.2 to 20 80 20 to 40 50 40 to 80 40 0.90±0.10 Terminal #1, #3 : X’ tal #4 : Thermistor #2 : Thermistor & GND (0.8) (0.65) #1 #2 *1 Equivalent Series Resistance (0.8) Land pattern (Typical) 1.7 #2 1.0 (0.65) 1.3 C0.3 C0.3 #4 #3 1.2 If you require this product, please contact NDK sales. -9- 1604B_NX2520SG_e