kHz Range Crystal Devices Crystal Units Surface Mount Type: Tuning Fork ST3215SB 3.2×1.5mm for Consumer/ Mobile Equipment Features How to Order ST3215SB 32768 □□ □ □ □ □□ • Small, Low Profile • Ceramic Package • Reflow Compatible ① ② ③ ④⑤⑥ ⑦ ① Series ② Frequency ③ Load Capacitance ④ Frequency Tolerance 32.768kHz Applications • Consumer/ Mobile Equipment H5 E0 C0 B0 A0 Z0 RoHS Compliant 12.5 pF 9.0 pF 7.0 pF 6.0 pF 5.0 pF 4.0 pF ⑤ Operating Temp. Range P H Std. ±20×10−6 ⑥ Frequency Temp. Stability −40 to +85°C W ±200×10−6 ⑦ Individual Specification Packaging (Tape & Reel 3000/ 10000 pcs./ reel) Specifications Item Symbol Nominal Frequency Specification f_nom Units 32.768 kHz ±10, ±20 ×10−6 Remarks 25°C±3°C Frequency Tolerance f_tol Turnover Temperature Ti +25±5 Parabolic Coefficient B −0.04 max. Motional Resistance R1 70 max. k-ohm Motional Capacitance C1 3.7 typ. fF Shunt Capacitance C0 0.9 typ. pF Load Capacitance CL 4.0/ 5.0/ 6.0/ 7.0/ 9.0/ 12.5 pF Please contact us Drive Level DL 0.1 µW 0.5 max. °C ×10−6/ °C2 Operating Temp. Range T_use −40 to +85 °C Storage Temp. Range T_stg −55 to +85 °C Frequency Aging f_age ±3 Dimensions ×10−6 Recommended Land Pattern (Unit: mm) 1.5±0.1 (Unit: mm) 1.55 0.8±0.1 1.0 3.2±0.1 2.6 1.7