HC49SMD-BF2020-15.9744M-TR

Crystals Overview

The HC49SMD-BF2020-15.9744M-TR is a parallel fundamental quartz crystal manufactured by Transko Electronics, Inc. It operates at a nominal frequency of 15.9744 MHz with a load capacitance of 20pF. The component exhibits a frequency stability of ±25ppm and a frequency tolerance of ±20ppm. This device belongs to the HC49/SMD series, designed for surface-mount applications requiring precise timing signals in electronic circuits.

Crystals Feature Summary

• Parallel fundamental quartz crystal construction
• Surface-mount package design
• High frequency stability specification

Crystals Applications

• General purpose timing circuits
• Microcontroller clock sources
• Communication equipment oscillators

Crystals Procurement Notes

Verify the specific suffix BF2020 against official Transko documentation to confirm exact physical dimensions and soldering profile requirements. Ensure the load capacitance matches the target circuit design. Confirm the active status directly with the manufacturer or authorized distributors, as component availability may vary. Cross-reference the part number format to avoid confusion with similar HC49 variants.

Crystals Selection Notes

Select this component when a 15.9744 MHz reference is required for surface-mount PCB layouts. The 20pF load capacitance must align with the oscillator circuit's input capacitance. Consider the ±25ppm stability for applications sensitive to temperature-induced drift. Evaluate the HC49/SMD form factor for space-constrained designs compared to through-hole alternatives.

Crystals Part Context

This part belongs to the HC49/SMD family of quartz crystals from Transko Electronics. These components are standard industry replacements for legacy HC49/U packages but adapted for automated surface-mount assembly. The series typically offers various frequencies and load capacitances to support diverse digital and analog timing requirements across consumer and industrial electronics.

Crystals Replacement Considerations

Transko suggests TMM oscillators or TX-T series as potential drop-in replacements for other product lines, but direct substitution for this specific crystal requires matching electrical parameters. Verify compatibility with existing oscillator circuits before replacing.