SP-T Series (SP-T3) Surface Mount Quartz Crystal Units for Low Frequencies FEATURES • Low height 2.0mm max. • Plastic mold package incorporated tubular type quartz crystal. • Suitable for automatic and high density surface mounting. • Excellent shock and heat resistance. APPLICATIONS • Radio Communication Equipment, Pagers, Cellular Phones, Portable Applications, Clock Source for Micro-Computers STANDARD SPECIFICATIONS Item Nominal Frequency Frequency Tolerance Conditions without notice (Temperature: +25°C±2°C) Symbol Specifications fo 32.768kHz ±20ppm, ±30ppm, ±50ppm,±100ppm f/fo Turnover Temperature Tp +25°C±5°C Temperature Coefficient K (-3.5±1.0) x 10-8/°C2 Load Capacitance CL 6.0 to 12.5pF Equivalent Series Resistance R1 55kΩ max. Maximum Drive Level Conditions / Notes DLmax 1µW Recommended Drive Level DL 0.1µW Shunt Capacitance C0 Aging f/fo 0.9pF typ. ±3ppm max. +25°C±3°C, First Year Operating Temperature Range Tope -40°C to +85°C Storage Temperature Range Tsto -55°C to +125°C Reflow Profile Tsol 230°C max., 20sec. max. x 2 times IR Reflow INTERNAL LEAD CONNECTION DIMENSIONS (For details, please refer to individual specification) 4# 3# 1# 2# UNIT: mm 7.3MAX. 4# Can be used in high accurate products 4.3MAX. 2.6 3# RECOMMENDED SOLDERING PATTERN 1# UNIT: mm 2# 0.4 2.0MAX. 1.8 1.2 3.88 1.2 1.3 0.4 5.08 2.4 1.3 13