Overview of Ecliptek E4WCDA 12-32.768K Watch Crystal Resonator
The Ecliptek E4WCDA 12-32.768K datasheet provides detailed information on a watch crystal resonator, emphasizing its regulatory compliance, electrical specifications, and mechanical dimensions. Specifically designed for timekeeping applications, this part displays Ecliptek’s commitment to industry standards and quality.
Regulatory Compliance
The E4WCDA 12-32.768K crystal resonator is compliant with several regulatory standards, including EU RoHS, China RoHS, REACH with 144 SVHC, and the DRC Conflict-Free policy. Compliance badges available in the datasheet link directly to documentations that confirm its adherence to environmental and safety requirements set by governing bodies, which are regularly updated.
Electrical Specifications
An essential part of the datasheet highlights the resonator’s precise electrical characteristics, which include:
Nominal Frequency: 32.768KHz
Frequency Tolerance: ±20ppm at 25ºC
Frequency Stability Temperature Coefficient: 0.042ppm per degree Celsius change²
Turn-over Temperature: 25ºC ±5ºC
Aging at 25ºC: ±5ppm per year maximum
Operating Temperature Range: -10ºC to +60ºC
Load Capacitance: 12.5pF Parallel Resonant
Shunt Capacitance: 0.85pF typical, 2pF maximum
Motional Capacitance: 2.0fF typical
Equivalent Series Resistance: 50,000 Ohms maximum
Drive Level: 1μWatt maximum
Storage Temperature Range: -20ºC to +70ºC
Insulation Resistance: 100 Megaohms minimum at 100Vdc
These specifications suggest the crystal’s suitability for precise timekeeping under a variety of conditions.
Mechanical Dimensions
For integration into electronic devices, the datasheet provides the mechanical dimensions of the resonator:
Length (max): 6.3mm
Width (max): 2.1mm
The package envelops these dimensions and includes thorough dimensional tolerances for precise implementation in product design.
Summary Points
The Ecliptek E4WCDA 12-32.768K is a thru-hole metal cylindrical watch crystal resonator that operates at a frequency of 32.768KHz with frequency stability suitable for accurate timekeeping. Its robust design is evident in the wide operating and storage temperature ranges, withstanding -10ºC to +60ºC and -20ºC to +70ºC respectively. The crystals are designed for fundamental mode operation with series resistance and capacitance tailored for typical horological applications. Ecliptek reinforces reliability with an assurance of adjusted specifications without notice and provides direct customer support through their provided contacts. This datasheet serves designers and manufacturers requiring detailed technical information for product development and integration.
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