ECS-147.4-20-4

Crystals Overview

The ECS-147.4-20-4 is a fundamental mode quartz crystal resonator manufactured by ECS Inc. It operates at a nominal frequency of 14.7456 MHz with a load capacitance of 20 pF. The component exhibits a frequency tolerance of ±30 ppm and a stability of ±50 ppm over the operating temperature range of -10°C to +70°C. It features an equivalent series resistance (ESR) of 40 Ohms and utilizes an HC-49/US through-hole package.

Crystals Feature Summary

• Fundamental mode quartz crystal construction for stable oscillation
• HC-49/US radial leaded package design for through-hole mounting
• RoHS compliant manufacturing process

Crystals Applications

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

Crystals Procurement Notes

Verify the specific suffix against the manufacturer's current datasheet to ensure compliance with updated RoHS directives and material declarations. Confirm that the HC-49/US package dimensions align with the target PCB footprint requirements. Ensure the operating temperature range of -10°C to +70°C meets the environmental specifications of the intended application before finalizing procurement orders.

Crystals Selection Notes

Select this component when a fundamental mode crystal is required for cost-sensitive applications. The 20 pF load capacitance must match the oscillator circuit design parameters. Consider the ±50 ppm stability limit for applications requiring precise timing synchronization. The HC-49/US form factor is suitable for standard through-hole assembly processes where surface mount options are not feasible.

Crystals Part Context

This part belongs to the standard quartz crystal resonator category from ECS Inc. It differs from active oscillators like the ECS-2025-147.4-AM or TCXOs such as the ECS-TXO-3225-147.4-TR by lacking integrated circuitry. Unlike voltage-controlled or compensated variants, it provides a passive frequency reference dependent on external circuit loading conditions.

Crystals Replacement Considerations

Direct replacements must maintain the 14.7456 MHz frequency, 20 pF load capacitance, and HC-49/US package. Verify ESR compatibility with the host oscillator circuit. Cross-reference with other manufacturers' HC-49/US crystals offering similar ±30 ppm tolerance and ±50 ppm stability ratings.