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Ecliptek is one of the ILSI America brands, which also include:

ILSI America MMD Oscilent

E3WS Series Crystal
Watch Crystal Resonator 1.2mm x 2.0mm x 0.6mm 2 Pad Ceramic Surface Mount (SMD)

Revision  A  05/19/2016

Electrical Specifications

Nominal Frequency 32.768kHz
Frequency Tolerance ±20ppm at 25°C
Frequency Stability Temperature Coefficient -0.04ppm/(Change in °C)2 Maximum
Turn over Temperature 25°C ±5°C
Aging at 25°C ±3ppm/year Maximum
Operating Temperature Range -40°C to +85°C
Load Capacitance 12.5pF Parallel Resonant
Shunt Capacitance(C0) 1.3pF Typical, 1.5pF Maximum
Motional Capacitance 6.4fF Typical
Equivalent Series Resistance 80,000 Ohms Maximum
Mode of Operation Fundamental
Drive Level 0.5µWatt Maximum
Crystal Cut Tuning Fork
Storage Temperature Range -40°C to +85°C
Insulation Resistance Measured at 100VDC
500 Megaohms Minimum