Product Overview
The KYX M-49USSMD /25.000MHz is a Quartz Crystal Resonator designed for electronic applications. It offers precise frequency control with a nominal frequency of 25.000 MHz and tight frequency tolerances.
Product Attributes
- Brand: KYX
- Origin: Shenzhen, China
- Marking: KYX XX (Nominal Frequency)
Technical Specifications
| Product Model | Nominal Frequency | Mode of Oscillation | Frequency Tolerance | Temperature Tolerance | Operating Temperature Range | Storage Temperature | Equivalent Resistance | Load Capacitance | Drive Level | Shunt Capacitance | Insulation Resistance | Aging | Hold Type |
| M-49USSMD /25.000MHz | 25.000 MHz | AT CUT | 10PPM | 20PPM | -20+70 | -40+85 | 40 | 12 pF | 100W | 3.0 pF | 500M at DC 100V15V | 3ppm/year | (Unit: mm) |
Product Reliability
Electrical Performance
A.1 Low Temperature Resistance Test
Quartz crystal placed in a thermostat at -405 for 500 hours 2 hours, then naturally cooled to room temperature for 1 hour before testing. () Frequency Change: 5ppm, Resistance Change: 20%
A.2 High Temperature Resistance Test
Quartz crystal placed in a thermostat at +1005 for 500 hours 2 hours, then naturally cooled to room temperature for 1 hour before testing. () Frequency Change: 5ppm, Resistance Change: 20%
A.3 Salt Spray Test
Saltwater (5% salt concentration) at 352 sprayed onto the quartz crystal for 48 hours 2 hours, then washed with clean water and checked for appearance. () Product appearance is qualified.
A.4 Humidity Test
Quartz crystal placed in a thermostat at 602 and 90-98% relative humidity for 500 hours 2 hours, then naturally cooled to room temperature for 1 hour before testing. () Frequency Change: 5ppm, Resistance Change: 20%
A.5 Temperature Cycling
Quartz crystal placed in a thermostat at -402 for 30 minutes 1 minute, then at +852 for 30 minutes 1 minute, for a total of 100 cycles. After completion, naturally cooled to room temperature for 2 hours. () Frequency Change: 5ppm, Resistance Change: 20%
Mechanical Performance
B.1 Drop Test
Quartz crystal freely dropped from a height of 75cm5cm onto a wooden board thicker than 3cm, 3 times. Tested after 1 hour of placement. () Frequency Change: 5ppm, Resistance Change: 20%
B.2 Vibration Test
Frequency 10-55Hz, amplitude 1.5mm. Product vibrated along X, Y, Z axes for 2 hours. Tested after 1 hour of placement. () Frequency Change: 5ppm, Resistance Change: 20%
B.3 Terminal Bending Strength Test
Main body fixed and twisted at a 45-degree angle, then slowly restored. () Leads without breakage and meets () requirements.
B.4 Terminal Strength
After mounting on the PCB, pressurized for 5 seconds 1 second with a bending degree of 2mm at a speed of 0.5mm/s. () Leads without breakage and meets () requirements.
B.5 Soldering Wettability Test
Terminals applied with flux (7-10% concentration) for approximately 5 seconds, then placed in a 2305 molten tin bath for 3 seconds. () Solder coverage rate higher than 90%.
B.6 Sealing Test
Quartz crystal immersed in 855 warm water for 5 minutes. Water depth covers the crystal by approximately 20cm. () No bubbles deposited on the crystal surface or emerging from the water.
B.7 Solder Heat Resistance
Quartz crystal placed on a 2655 tin bath with a distance of 2.00.2mm between the crystal and the tin surface for 3 minutes (2 times). Quartz crystal placed on a 35010 tin bath with a distance of 2.0mm0.2mm between the crystal and the tin surface for 30.5 seconds (total 2 times). After completion, the crystal is naturally cooled to room temperature for 2 hours before testing. () Frequency Change: 5ppm, Resistance Change: 20%
Packaging
1 tray per box (3000PCS). 10 boxes per outer carton (30000PCS).
2310121803_KYX-KMD250001210_C18213398.pdf
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