049ST2-25.000F12DTNJK

Crystals Overview

The 049ST2-25.000F12DTNJK is a quartz crystal resonator manufactured by Suzhou Hangjing Elec & Tech Co., Ltd. It operates at a nominal frequency of 25 MHz with a load capacitance of 12 pF. The component exhibits a frequency tolerance of ±10 ppm and an equivalent series resistance (ESR) of 30 Ohms, although one source cites 20 Ohms. It utilizes the HC-49S package style and provides frequency stability across environmental conditions.

Crystals Feature Summary

• Quartz crystal resonator designed for precision frequency control applications
• HC-49S through-hole package configuration for standard mounting
• Stable oscillation characteristics with defined load capacitance requirements

Crystals Applications

• Signal processing components in electronic devices
• Frequency reference units in communication systems
• Clock generation circuits in consumer electronics

Crystals Procurement Notes

Verify the specific Equivalent Series Resistance (ESR) value required for your circuit design, as available documentation lists both 30 Ohms and 20 Ohms for this part number. Confirm that the HC-49S package dimensions align with your PCB layout constraints. Ensure the 12 pF load capacitance matches the oscillator circuit specifications to achieve the stated ±10 ppm frequency tolerance. Cross-reference the manufacturer's latest datasheet for any updates on operating temperature ranges or reliability testing standards before finalizing procurement.

Crystals Selection Notes

Select this component when a 25 MHz fundamental mode crystal is required for stable clock signals. The HC-49S package offers robust mechanical support for through-hole assembly. Consider the ESR specification carefully to ensure compatibility with the driving circuit's gain margin. This part is suitable for general-purpose timing applications where moderate frequency stability is sufficient.

Crystals Part Context

This model belongs to the 049ST2 series of quartz crystals produced by Suzhou Hangjing Elec & Tech Co., Ltd. The company specializes in quartz frequency controlling units, including crystals, oscillators, and filters. The 049ST2 designation typically indicates a specific series within their portfolio of standard frequency control components designed for various electronic applications.

Crystals Replacement Considerations

Direct substitutes must match the 25 MHz frequency, 12 pF load capacitance, and HC-49S package. Verify ESR compatibility, noting discrepancies between 20 Ohm and 30 Ohm ratings in public data. Alternative manufacturers producing HC-49S 25 MHz crystals may be considered if electrical parameters are identical.