E1SJA18-28.63636M TR

Crystals Overview

The E1SJA18-28.63636M TR is a quartz crystal resonator manufactured by Ecliptek, operating at a nominal frequency of 28.63636 MHz. It utilizes an AT-cut fundamental parallel resonance mode with a load capacitance of 18 pF and an equivalent series resistance of 40 Ohms. The device supports a drive level of 1000 µW and exhibits a maximum aging rate of 5 ppm per year. Frequency tolerance is specified at ±15 ppm at 25°C and ±30 ppm over the operating temperature range of -40°C to +85°C. It features a surface-mount package measuring 13.3 mm x 4.85 mm x 3.2 mm.

Crystals Feature Summary

• AT-cut fundamental parallel resonance operation for stable frequency generation
• Resistance welded metal seal construction ensuring environmental durability
• Surface mount design compatible with automated assembly processes
• Lead-free and RoHS compliant manufacturing standards

Crystals Applications

• Digital clock signal generation in embedded systems
• Microcontroller and processor timing references
• Communication interface synchronization circuits
• Consumer electronics requiring precise frequency control

Crystals Procurement Notes

Verify component authenticity through official Ecliptek channels or authorized distributors. Confirm that the received parts match the specific model number and packaging specifications. Ensure compliance with relevant regulatory standards such as RoHS and REACH requirements before integration into final products.

Crystals Selection Notes

Select this component when a precise 28.63636 MHz reference is required for digital logic applications. Consider the -40°C to +85°C temperature range suitability for industrial environments. Evaluate the 18 pF load capacitance requirement against the oscillator circuit design to ensure proper frequency accuracy and stability.

Crystals Part Context

This part belongs to the E1S Series of short HC-49/UP surface mount crystals from Ecliptek. The series offers various frequency options within a compact footprint, providing a reliable alternative to traditional through-hole components. The resistance welded seal enhances long-term reliability compared to standard epoxy-sealed packages.

Crystals Replacement Considerations

Direct substitutes include other Ecliptek E1S series crystals with identical electrical parameters and package dimensions. Cross-referencing with major distributors may reveal equivalent parts from manufacturers like Abracon or TXC, provided frequency, tolerance, and load capacitance match exactly.