QT49-14.31818MAHI-B

Overview

The QT49-14.31818MAHI-B is a fundamental quartz crystal resonator manufactured by QST Products, LLC. It operates at a nominal frequency of 14.31818 MHz and utilizes AT-cut technology for stable performance. The component is housed in an HC-49/US package with through-hole mounting capabilities. Key electrical specifications include a load capacitance of 16 pF and a series resistance of 30 Ohms. Frequency stability is rated at ±30 ppm, with aging specified at ±5 ppm maximum during the first year at 25°C. The drive level typically ranges from 1 to 500 μW, with a typical value of 100 μW.

Feature Summary

• Fundamental AT-cut quartz crystal construction ensures high frequency stability and low phase noise.
• HC-49/US hermetically sealed metal package provides robust environmental protection and mechanical durability.
• Designed for standard through-hole surface mounting applications compatible with automated assembly processes.

Applications

• Microprocessor clock circuits
• Computer system timing references
• Modem communication interfaces

Procurement Notes

Verify the specific suffix 'MAHI-B' against the manufacturer's current datasheet to confirm exact tolerance and temperature range parameters. Ensure compatibility with existing PCB footprint dimensions and lead configuration. Confirm RoHS compliance status if required by project specifications. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a fundamental mode crystal is required for precise timing applications. The HC-49/US form factor suits designs needing established through-hole reliability. Consider the ±30 ppm stability requirement against system clock accuracy needs. Evaluate the 16 pF load capacitance against the oscillator circuit design to ensure proper frequency matching.

Part Context

This part belongs to the QT49 series of MHz crystals produced by QST. The series offers various frequencies and stability options within the HC-49/US package. These components are widely used in digital electronics requiring stable clock signals. The specific model denotes particular frequency and tolerance characteristics within this product line.

Replacement Considerations

Compatible substitutes include other HC-49/US crystals with identical 14.31818 MHz frequency, 16 pF load capacitance, and similar stability ratings. Verify pin compatibility and physical dimensions before substitution. Check manufacturer datasheets for equivalent parts from Abracon or Epson.