Q13FC13500049

Q13FC13500049 is a 32.768 kHz tuning-fork crystal from Epson's FC-135 series in a 3.2 x 1.5 x 0.9 mm SMD case, listed in Epson's official part-number database. The database values: load capacitance 6 pF, equivalent series resistance 70 kΩ maximum, frequency tolerance ±20 ppm at +25 °C (at a 0.1 µW drive level), turnover temperature +25 °C ±5 °C, parabolic coefficient −0.04 ppm/°C² (the maker's maximum figure), aging ±3 ppm maximum in the first year at +25 °C, maximum drive level 0.5 µW, gold-plated terminals, operating range −40 °C to +85 °C. The selection point is the low-CL variant: 6 pF serves low-power RTC oscillators whose circuit capacitance budget is built around it. Ordering form: this page carries the stable base code from Epson's database — the final orderable form adds a two-character packing suffix, so the complete string is confirmed when you request a quote rather than assumed here. Selection advice: against the 12.5 pF sibling (Q13FC13500004, same series, same case, also listed here), this code differs in exactly one specification — the load capacitance — and that difference is the whole part; the two were verified independently from Epson's database and are not interchangeable without re-trimming the oscillator.