E2SCA18-25.000M TR Quartz Crystal Resonator Datasheet

Category: Crystals Resonators, Ecliptek Corporation, Electronics

Overview

The E2SCA18-25.000M TR is a Quartz Crystal Resonator product by Ecliptek. This resonator operates at a nominal frequency of 25.000MHz and is especially designed for surface-mount technology (SMT) with a height profile of 4.5mm. The resonator is encapsulated with a metal resistance weld seal. The product’s full title according to the data sheet is the “Quartz Crystal Resonator HC49/UP 2 Pad SMD 4.5mm Height Metal Resistance Weld Seal.” The device is compliant with several regulatory standards, including Lead-Free, EuroHS, ChinaRoHS, REACH SVHC, and is certified DRC Conflict Free.

Regulatory Compliance

The datasheet highlights the product’s adherence to regulatory compliances updated on February 11, 2020. It meets EuroHS 2011/65 2015/863, ChinaRoHS, REACH with 191 SVHC substances, and is DRC Conflict Free. There is a provision for the user to download the latest compliance documents directly from Ecliptek’s website.

Electrical Specifications

The device’s electrical characteristics include a nominal frequency of 25.000MHz with a frequency tolerance/stability of ±50ppm at 25°C and ±100ppm over the temperature range of -40°C to +85°C. Aging is specified at less than or equal to 5ppm per year at 25°C. The resonator has a load capacitance of 18pF in parallel resonant mode, a shunt capacitance of 7pF maximum, and an equivalent series resistance (ESR) of 40 Ohms maximum. It can handle a drive level of up to 1mWatt maximum. The insulation resistance is indicated to be a minimum of 500 Megaohms when measured at 100Vdc.

Environmental and Mechanical Specifications

The device is built to withstand harsh environmental and mechanical conditions. Specifications include ESD susceptibility meeting MIL-STD-883, Method 3015, with a human body model (HBM) of 1500V. It also adheres to various MIL-STD-883 and MIL-STD-202 testing methodologies, covering aspects such as fine and gross leak test conditions, flammability ratings (UL94-VO), mechanical shock, moisture resistance, sensitivity and resistance to soldering heat, resistance to solvents, solderability and temperature cycling, as well as vibration durability. Additional notes suggest that the part’s specifications are subject to change without prior notice and provides Ecliptek’s contact information.

Storage and Insulation Resistance

For storage, the resonator’s temperature range is specified from -40°C to +125°C. A highlighted insulation resistance value of 500 Megaohms minimum assures robustness for long-term application.