HC49/SMD-BF20-30-14.7456M-TR

Crystals Overview

The HC49/SMD-BF20-30-14.7456M-TR is a parallel fundamental quartz crystal manufactured by Transko Electronics, Inc. It operates at a nominal frequency of 14.7456 MHz and utilizes the HC49/SMD surface-mount package. The component features a load capacitance of 30 pF and offers a frequency tolerance of ±30 ppm at 25°C, with a total frequency deviation of ±50 ppm across the operating temperature range. It exhibits an annual aging rate of ±5 ppm and supports a maximum drive level of 500 μW. The device is designed for industrial applications, providing reliable frequency control in serial communication systems.

Crystals Feature Summary

• Provides zero-error frequency division for standard serial baud rates such as 9600 and 115200 bps
• Utilizes hermetic resistance welding sealing with glass-metal sealed pins for environmental stability
• Supports lead-free manufacturing processes and complies with RoHS and REACH standards

Crystals Applications

• Industrial RS485 gateways
• Low-power IoT gateway devices
• Microcontroller-based serial communication interfaces

Crystals Procurement Notes

Verify that the specific part number matches the required load capacitance and frequency tolerance specifications from the official datasheet. Confirm compatibility with the target microcontroller's oscillator circuit requirements, particularly regarding equivalent series resistance limits. Ensure the procurement channel supplies original components to guarantee reliability in industrial environments.

Crystals Selection Notes

Select this component when precise baud rate generation is critical for serial communication integrity. The 14.7456 MHz frequency eliminates fractional error in common baud rates. Consider the 30 pF load capacitance for PCB layout matching and verify that the ESR specifications align with the driving capability of the host MCU to prevent startup failures.

Crystals Part Context

This crystal belongs to the HC49/SMD family, which provides a robust surface-mount alternative to through-hole crystals. The BF20-30 suffix indicates specific electrical parameters including load capacitance and tolerance levels. Transko Electronics specializes in high-performance quartz crystals and oscillators, offering products suitable for demanding industrial and commercial applications.

Crystals Replacement Considerations

HC49/SMD-BF2050ET-12.000M-TR (Different Frequency)

Crystals FAQ

Why is 14.7456 MHz preferred for serial communication?

It allows for integer division to generate standard baud rates like 115200 bps without frequency error, preventing data loss.

What is the maximum drive level for this crystal?

The maximum drive level is 500 μW, which helps prevent aging acceleration due to overdriving.