FOXSDLF/250F-20 is a surface-mount quartz crystal resonator introduced by Fox Electronics, featuring the HC-49/US (HC-49/SDLF) micro package. This device provides a stable 25 MHz clock reference frequency for MCUs, communication chips, and digital logic circuits.
Main performance parameters: Nominal frequency 25 MHz, Load capacitance 20 pF, Frequency tolerance ±30 ppm, Frequency stability ±50 ppm. Equivalent series resistance 30 Ω, operates in base frequency mode. Driving power 100 µW.
This device is packaged in a small SMD format and is suitable for automated SMT production. It complies with RoHS standards and is lead-free and environmentally friendly. The operating temperature range is -20°C to +70°C (standard industrial temperature). An extended temperature version ranging from -40°C to +85°C is also available for selection.
Features ：
• Product Type: Quartz Crystal Resonator (Crystal), 2-pin SMD Package
• Nominal frequency: 25 MHz
• Load capacitance (CL): 20pF
• Frequency tolerance: ±30 ppm (at 25°C)
• Frequency stability: ±50ppm (within the range of -20°C to +70°C)
• Equivalent series resistance (ESR): 30Ω
• Working mode: Base frequency
• Drive power: 100 µW
• Aging rate: ±3ppm per year
• Operating temperature range: -20°C to +70°C (standard grade), optional -40°C to +85°C version
• Compact packaging: HC-49/US (SMD), size approximately 13.9mm × 5.0mm × 4.5mm
• MSL level: Level-1 (unrestricted, unlimited workshop lifespan)
• Environmental compliance: Meets RoHS3 standards, lead-free (Pb-Free)
Application：
• Microcontroller clock source: Provides the system clock for MCU, MPU, and DSP
• Communication equipment: Ethernet PHY, USB controller, wireless module clock
• Industrial control: Sequential circuits of PLC and data acquisition systems
• Consumer electronics: Digital TV, set-top box, gaming equipment
• Testing and Measurement: Frequency Counter, Signal Generator
