E1SJA18-10.240M TR

Crystals Overview

The E1SJA18-10.240M TR is a quartz crystal resonator from the Ecliptek E1S series, designed for surface mount applications. It operates at a nominal frequency of 10.24 MHz with an AT-cut fundamental mode. The component features a parallel resonant configuration and an 18 pF load capacitance. Frequency tolerance is specified at ±15 ppm at 25°C, extending to ±30 ppm across the operating range of -40°C to +85°C. Aging stability is rated at 5 ppm per year maximum. The device utilizes a resistance-welded metal seal within an HC-49/UP short SMD package, measuring 13.3 mm in length, 4.85 mm in width, and 3.2 mm in height.

Crystals Feature Summary

• Surface mount construction using a resistance-welded metal seal for environmental protection
• AT-cut fundamental mode operation ensuring stable parallel resonance characteristics
• Compliance with RoHS directives indicating lead-free manufacturing processes

Crystals Applications

• Clock generation circuits requiring precise timing references
• Microcontroller oscillator inputs
• Communication interface modules
• Digital signal processing systems

Crystals Procurement Notes

Verify that the ordering suffix matches the required tape and reel packaging format. Confirm that the specific frequency tolerance and stability requirements align with the ±15 ppm and ±30 ppm specifications provided in the datasheet. Ensure compatibility with the 18 pF load capacitance setting of the target circuit design before finalizing procurement.

Crystals Selection Notes

Select this component when a surface mount solution is required for 10.24 MHz applications. The HC-49/UP short form factor suits space-constrained designs. Verify that the drive level specification does not exceed the circuit's output capability to prevent frequency pulling or damage. Ensure the operating temperature range covers the intended environmental conditions.

Crystals Part Context

This part belongs to the E1S series of short HC-49/UP surface mount crystals. The series offers various nominal frequencies while maintaining consistent physical dimensions and electrical characteristics. The E1SJA18 variant specifically denotes the 18 pF load capacitance configuration within this product line.

Crystals Replacement Considerations

Direct substitutes must match the 10.24 MHz frequency, 18 pF load capacitance, and HC-49/UP SMD package dimensions. Verify equivalent aging rates and frequency stability specifications to ensure system performance remains unaffected during replacement.