32.768 kHz at fundamental mode
The ECS-.327-7-34B-C-TR is a 32.768 kHz tuning fork crystal operating in fundamental mode — the standard frequency for RTC circuits and low-power timing reference designs. At 25 °C the frequency tolerance is ±10 ppm, which translates to roughly ±0.864 seconds per day — well within the ±1 minute per month drift budget for most calendar-clock applications. The load capacitance specification of 7 pF defines the crystal's intended external capacitance total; many RTC ICs expect 12.5 pF total, so confirm the target device's recommended load and adjust with series/shunt capacitors accordingly.
Industrial temp grade and ESR
Equivalent series resistance is specified at 70 kΩ; this is the value the oscillator startup circuit must drive on power-up, and it directly affects the drive-level budget — a higher ESR means the IC must supply more current to get the crystal oscillating reliably.
2-SMD package for compact assembly
The part ships on Tape & Reel with a Cut Tape option — reel quantities suit high-volume production runs; confirm reel pitch against your pick-and-place feeder spec.