E1UGA18-25.OOOM TR – HC-49/US Crystal

Category: Crystals Resonators, Ecliptek Corporation, Electronics

Overview

The datasheet provides detailed information about the E1UGA18-25.OOOM TR, a resistance welded, short HC-49/US crystal that is compliant with the RoHS (Restriction of Hazardous Substances) directive, meaning it is lead-free and environmentally friendly. The datasheet includes electrical specifications, environmental and mechanical compliance, as well as mechanical dimensions for the component.

Electrical Specifications

At the heart of the datasheet are the electrical specifications for the E1UGA18-25.OOOM TR. The nominal frequency is stated to be 25.0MHz, with a frequency tolerance and stability of ±15ppm at 25°C and ±30ppm over the operating temperature range of 0°C to +70°C. The crystal also has an aging specification of ≤5ppm per year at 25°C. For resonant circuitry, it supports a maximum load capacitance of 18pF in a parallel resonant mode, a shunt capacitance (CO) of 7pF maximum, and an equivalent series resistance of 40 Ohms maximum. It operates on an AT-cut fundamental mode and can handle a maximum drive level of 1mWatt. The storage temperature range for the component extends from -40°C to +125°C, and it has an insulation resistance minimum of 500 Megaohms at 100Vdc.

Environmental & Mechanical Compliance

The E1UGA18-25.OOOM TR meets a wide array of military standard tests suggesting its robustness for various applications. These tests include fine and gross leak tests (MIL-STD-883, Method 1014), lead integrity (MIL-STD-883, Method 2004), mechanical shock resistance (MIL-STD-202, Method 213), resistance to soldering heat (MIL-STD-202, Method 210), resistance to solvents (MIL-STD-202, Method 215), solderability (MIL-STD-883, Method 2003), temperature cycling (MIL-STD-883, Method 1010), and vibration (MIL-STD-883, Method 2007). Moreover, the lead termination is specified as Sn (tin) with a thickness range of 2um (micro-meters).

Mechanical Dimensions & Marking

As for the physical characteristics, the mechanical dimensions of the crystal are provided in millimeters, showcasing the exact size and spacing necessary for incorporation into devices. Additionally, line marking information is included for proper identification of the component, with “E” denoting the Ecliptek designator and “M” standing for MHz, indicating the component’s nominal frequency.

It is noted at the bottom of the datasheet that specifications are subject to change without notice, emphasizing the importance of checking for the most current information when considering this component for use. This is confirmed by the “Rev E 8/14/2010” at the bottom, indicating the revision and date of the datasheet. For more detailed information, users are directed to the Ecliptek website.