GL049F33IET

Crystals Overview

The GL049F33IET is a fundamental mode quartz crystal resonator manufactured by CTS-Frequency Controls. It operates at a nominal frequency of 4.9152 MHz with a frequency tolerance and stability of ±30 ppm. The component features an equivalent series resistance (ESR) of 120 Ohms and is designed for a load capacitance of 20 pF. It utilizes a glass-sealed construction housed in a 3-lead HC-49/US package, suitable for through-hole mounting. The device is RoHS3 compliant and classified under EAR99.

Crystals Feature Summary

• Fundamental oscillation mode operation
• Glass-sealed hermetic construction
• HC-49/US 3-lead package design

Crystals Applications

• Wireless infrastructure timing
• Wireline core networking synchronization
• Embedded processor clock sources

Crystals Procurement Notes

Verify the specific suffix 'IET' against the manufacturer's official datasheet to confirm pin configuration and lead material specifications. Ensure the required load capacitance matches the circuit design, as this unit specifies 20 pF. Confirm that the 120 Ohm ESR aligns with the oscillator circuit requirements. Check RoHS3 compliance status if environmental regulations apply to the final assembly.

Crystals Selection Notes

Select this component when a stable 4.9152 MHz reference is required in applications utilizing HC-49/US form factors. The ±30 ppm tolerance suits general-purpose timing needs rather than high-precision metrology. Consider the 120 Ohm ESR when designing the drive level and feedback network to ensure stable startup without overdriving the crystal. Verify compatibility with the intended PCB layout for 3-lead through-hole mounting.

Crystals Part Context

This part belongs to the CTS Frequency Controls line of discrete crystals, distinct from their surface-mount 445 series or other packaged oscillators. It serves as a passive timing element within larger electronic systems, providing the reference frequency necessary for digital logic and communication interfaces. The HC-49/US style represents a legacy but widely supported package type for industrial and consumer electronics.

Crystals Replacement Considerations

Direct substitutes must match the 4.9152 MHz frequency, 20 pF load capacitance, and HC-49/US 3-lead package. Verify that alternative manufacturers offer components with comparable ±30 ppm stability and 120 Ohm ESR to maintain circuit performance. Cross-reference pin dimensions and lead spacing to ensure mechanical fit.