E1SJA18-4.194304M TR

Crystals Overview

The E1SJA18-4.194304M TR is a surface-mount quartz crystal resonator from the Ecliptek E1S series, housed in an HC-49/UP Short package with two pads and a maximum height of 3.2mm. It utilizes a metal resistance weld seal for environmental protection. The nominal frequency is 4.194304 MHz with a parallel resonant mode operation. Frequency tolerance is ±15 ppm at 25°C and ±20 ppm over the operating temperature range of -20°C to +70°C. Aging is limited to 5 ppm per year maximum. Key electrical parameters include a load capacitance of 18 pF, shunt capacitance of 7 pF maximum, and equivalent series resistance of 200 ohms maximum.

Crystals Feature Summary

• Surface mount construction using HC-49/UP Short package
• Metal resistance weld seal for hermetic protection
• AT-cut fundamental mode of operation
• Lead-free and RoHS compliant manufacturing

Crystals Applications

• Clock generation circuits requiring precise timing
• Microcontroller oscillator inputs
• Communication module frequency references
• Industrial control system timing sources

Crystals Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm RoHS compliance status and lead-free solder finish upon receipt. Ensure storage conditions maintain insulation resistance requirements before soldering. Cross-reference part numbers with distributor catalogs to confirm exact suffix designations match the requested model.

Crystals Selection Notes

Select this component when a 4.194304 MHz reference is required in a compact surface-mount form factor. Consider the ±15 ppm initial tolerance and ±20 ppm stability limits for application accuracy needs. Evaluate the 18 pF load capacitance requirement against circuit design specifications. Assess thermal performance within the -20°C to +70°C operational range for environmental suitability.

Crystals Part Context

This resonator belongs to the Ecliptek E1S series of short-form surface-mount crystals. The series offers various frequencies in standardized packages to support rapid prototyping and production. The HC-49/UP Short footprint provides a space-saving alternative to through-hole variants while maintaining similar electrical characteristics and reliability standards for industrial applications.

Crystals Replacement Considerations

Direct substitutes must match the 4.194304 MHz frequency, HC-49/UP Short package dimensions, and 18 pF load capacitance. Verify that alternative components meet the same ±15 ppm tolerance and aging specifications. Ensure compatibility with existing PCB land patterns and reflow soldering profiles.