049ST2-25.000F20DTLJK

Crystals Overview

The 049ST2-25.000F20DTLJK is a quartz crystal resonator manufactured by Suzhou Hangjing Elec & Tech Co., Ltd. It operates at a fundamental frequency of 25 MHz with a frequency tolerance of ±20 ppm. The component features a load capacitance of 20 pF and an equivalent series resistance (ESR) of 30 Ohms. It utilizes the HC-49S package style, which is a two-dip configuration designed for through-hole mounting. This specific part number represents a standard frequency control unit intended for integration into electronic circuits requiring precise timing signals.

Crystals Feature Summary

• Fundamental operating mode for stable frequency generation
• HC-49S package style suitable for through-hole applications
• Designed for precision timing in signal processing circuits

Crystals Applications

• Smartphone timing circuits
• In-vehicle system synchronization
• GPS module clock sources

Crystals Procurement Notes

Verify the exact suffix codes against official manufacturer documentation to ensure correct package type and tolerance specifications. Confirm that the HC-49S form factor aligns with your PCB layout requirements. Cross-reference the 20pF load capacitance and 30 Ohm ESR values with your circuit design parameters before finalizing procurement orders to prevent compatibility issues.

Crystals Selection Notes

Select this component when a 25 MHz fundamental frequency with ±20 ppm stability is required. Ensure the circuit design supports a 20pF load capacitance and can accommodate the 30 Ohm series resistance. The HC-49S package dictates specific footprint constraints; verify mechanical clearance and mounting hole dimensions match the board design prior to selection.

Crystals Part Context

This part belongs to the quartz frequency controlling units produced by Suzhou Hangjing Elec & Tech Co., Ltd., founded in 2014. The company specializes in R&D and production of crystals and oscillators. The 049ST2 series denotes a specific variant within their portfolio, distinguished by the HC-49S package and through-hole construction, differentiating it from surface-mount alternatives like the 049SS2 series.

Crystals Replacement Considerations

The 049SS2-25.000F20DTLJK shares identical electrical specifications but uses an HC-49/US surface mount package. Substitution requires verifying PCB footprint compatibility and mounting method differences. No other public substitute part numbers are confirmed in available documentation.