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Specifications
Normal temperature Frequency Tolerance:
±10ppm
Frequency Stability:
±30ppm
Operating Temperature:
-40℃~+85℃
Load Capacitance:
18pF
Frequency:
50MHz
Mfr. Part #:
7E50000E18UCG
Package:
SMD2520-4P
Key Attributes
Model Number:
7E50000E18UCG
Product Description
Product Overview
The QUARTZ CRYSTAL UNIT SERIES 7E is a seam-sealed ceramic, 2.5*2.0mm surface mount package quartz crystal unit. It is designed for applications requiring precise frequency control.
Product Attributes
- Brand: SJK
- Origin: Shenzhen, China
- Certifications: RoHS, REACH, HF
- Minimum Packaging: 3000pcs/reel
- Moisture Sensitivity Level: Level 1
Technical Specifications
| Parameter | Specification |
| Output Frequency | 50.000000MHz |
| Vibration Mode | AT/Fundamental Frequency |
| Frequency Tolerance (at 25C) | 10 ppm max |
| Load Capacitance (CL) | 18.0 PF |
| Frequency Stability Over Operating Temperature | 30ppm max (-40 C to +85 C) |
| Operating Temperature Range | -40 C to +85 C |
| Storage Temperature Range | -40 C to +125 C |
| Shunt Capacitance (C0) | 3.0 PF Max |
| Driver Level (Typical) | 10W |
| Equivalent Series Resistance (ESR) | 40 Max |
| Aging @25C (1st year Max) | 3ppm/year |
| Testing Condition - Ambient Temperature | 255 |
| Testing Condition - Relative Humidity | 40%~70% |
| Reliability Test - Drop | 55cm height, 3 times. Frequency change 5ppm, Resistance change 15% |
| Reliability Test - Vibration | 10~55Hz, 1.5mm amplitude, 2 hours per axis (X, Y, Z). Frequency change 5ppm, Resistance change 15% |
| Reliability Test - Thermal Shock | 25 cycles (-403 for 30 min, 852 for 30 min). Frequency change 5ppm, Resistance change 15% |
| Reliability Test - Hermeticity | Helium pressure: 50.5Kg/cm, 120 min. Leak rate 110-9Pa.m3/s |
| Reliability Test - Resistance to Soldering Heat | 260C10C for 155 sec. Frequency change 5ppm, Resistance change 15% |
| Reliability Test - Tinning Test | 260C10C for 31 sec. Coverage 90% |
| Reliability Test - High Temp/Humidity | 60C2, 90%~95% RH for 240 hours. Frequency change 5ppm, Resistance change 15%. No rust on surface. |
| Reliability Test - High Temperature | 85C2 for 240 hours. Frequency change 5ppm, Resistance change 15% |
| Reliability Test - Low Temperature | -40C2 for 240 hours. Frequency change 5ppm, Resistance change 15% |
| Reliability Test - Life Test | 5V, 25 for 1000 hours. Frequency change 5ppm, Resistance change 15% |
2304131800_SJK-7E50000E18UCG_C524683.pdf
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