ECS-147.4-20-4X

Crystals Overview

The ECS-147.4-20-4X is a through-hole MHz crystal manufactured by ECS Inc., designed for general-purpose timing applications. It operates at a nominal frequency of 14.7456 MHz with a fundamental oscillation mode. The component features a load capacitance of 20 pF and an equivalent series resistance (ESR) of 40 Ohms. Frequency tolerance is specified at ±30 ppm, while overall frequency stability is rated at ±50 ppm. It supports a supply voltage range up to 5 VDC and functions within an operating temperature range of -10°C to +70°C. The physical dimensions are 11.40 mm in length, 4.70 mm in width, and 4.20 mm in maximum height.

Crystals Feature Summary

• Fundamental mode operation ensures stable oscillation characteristics for standard clock generation circuits.
• Through-hole HC-49/US package design facilitates reliable mounting on printed circuit boards using traditional assembly methods.
• RoHS compliant construction supports environmentally conscious manufacturing processes without compromising performance.

Crystals Applications

• Microcontroller clock sources
• Communication interface timing
• General-purpose digital logic circuits

Crystals Procurement Notes

Verify the specific suffix configuration against the manufacturer's official datasheet to ensure compatibility with required environmental ratings and electrical specifications. Confirm that the HC-49/US footprint matches the target PCB layout constraints. Cross-reference the RoHS compliance status with current regulatory requirements for the intended market. Ensure storage conditions adhere to moisture sensitivity levels defined in the component documentation prior to soldering.

Crystals Selection Notes

Select this component when a fundamental mode crystal with through-hole termination is required for 14.7456 MHz applications. Consider the 40 Ohm ESR value for oscillator circuit design to ensure proper startup and stability. Evaluate the ±50 ppm stability rating against system timing accuracy requirements. Verify that the 20 pF load capacitance aligns with the host oscillator circuit's capacitive loading specifications.

Crystals Part Context

This part belongs to the standard MHz crystal category from ECS Inc., utilizing the widely adopted HC-49/US housing format. It serves as a basic timing element for digital systems requiring precise frequency references. The product line emphasizes reliability and cost-effectiveness for high-volume consumer and industrial electronics. It represents a foundational component type for creating clock signals in microprocessor-based architectures.

Crystals Replacement Considerations

Substitute parts must match the 14.7456 MHz frequency, 20 pF load capacitance, and HC-49/US package dimensions. Verify equivalent ESR values and frequency stability tolerances to maintain circuit performance. Ensure the replacement component supports the same operating temperature range and fundamental mode operation.