Product Overview
The QUARTZ CRYSTAL UNIT SERIES 7U is a seam-sealed ceramic, surface mount package designed for various electronic applications. It offers a compact 3.2*2.5mm footprint and is available in a 25.000MHz frequency with a load capacitance of 12pF and a frequency tolerance of 10PPM.
Product Attributes
- Brand: SJK
- Origin: Shenzhen, China
- Package Type: 3.2*2.5MM Surface Mount, Ceramic, Seam Sealed
- Environmental Certifications: RoHS, REACH, HF
- Minimum Packaging: 3000pcs/reel
- Moisture Sensitivity Level: Level 1
Technical Specifications
| Parameter | Value | Condition |
|---|---|---|
| Product Name | QUARTZ CRYSTAL UNIT SERIES 7U | |
| Part Number (P/N SJK) | 7U25000E12UCG | |
| Frequency | 25.000000MHz | |
| Vibration Mode | AT/Fundamental | |
| Frequency Tolerance (at 25C) | 10 ppm max | |
| Load Capacitance (CL) | 12.0 PF | |
| Frequency Stability (Over Operating Temperature) | 10ppm max | -20 C to +70 C |
| 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 | Standard atmospheric conditions |
| Testing Condition - Relative Humidity | 40%~70% | Standard atmospheric conditions |
| Reliability Test - Drop | 55cm onto wood board, 3 times | Frequency change 5ppm, ESR change 15% |
| Reliability Test - Vibration | 10~55Hz, 1.5mm amplitude, 2 hours/axis (X, Y, Z) | Frequency change 5ppm, ESR change 15% |
| Reliability Test - Thermal Shock | 25 cycles (-403 for 30min, 852 for 30min) | Frequency change 5ppm, ESR 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, ESR change 15% |
| Reliability Test - Solderability | 260C10C, 31 sec immersion | Pin coverage 90% |
| Reliability Test - High Temp. & Humidity | 60C2, 90%~95% RH, 240 hours | Frequency change 5ppm, ESR change 15%, No rust on surface |
| Reliability Test - High Temperature | 85C2, 240 hours | Frequency change 5ppm, ESR change 15% |
| Reliability Test - Low Temperature | -40C2, 240 hours | Frequency change 5ppm, ESR change 15% |
| Reliability Test - Life Test | 5V, 25, 1000 hours | Frequency change 5ppm, ESR change 15% |
2207271530_SJK-7U25000E12UCG_C251614.pdf
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