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Specifications
Normal temperature Frequency Tolerance:
±10ppm
Frequency Stability:
±30ppm
Operating Temperature:
-40℃~+85℃
Load Capacitance:
18pF
Frequency:
27MHz
Mfr. Part #:
7E27000E18UCG
Package:
SMD2520-4P
Key Attributes
Model Number:
7E27000E18UCG
Product Description
QUARTZ CRYSTAL UNIT SERIES 7E, SEAM SEALED CERAMIC 2.5*2.0MM SURFACE MOUNT PACKAGE
The Series 7E is a seam-sealed ceramic surface mount quartz crystal unit designed for various electronic applications. Its compact 2.5*2.0mm package makes it suitable for space-constrained designs.
Product Attributes
- Brand: SJK
- Origin: Shenzhen, China
- Certifications: RoHS, REACH, HF
- Package Type: 2.5*2.0mm Surface Mount, Seam Sealed Ceramic
- Minimum Packaging: 3000pcs/reel
- Moisture Sensitivity Level: Level 1
Technical Specifications
| Parameter | Specification | Conditions |
| Output Frequency | 27.000000MHz | |
| Vibration Mode | AT/Fundamental Frequency | |
| Frequency Tolerance | 10 ppm max | at 25C |
| Load Capacitance (CL) | 18.0 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) | 60 Max | |
| Aging @25C 1st year (Max) | 3ppm/year | |
| Testing Conditions | Ambient temperature: 255, Relative humidity: 40%~70% | Standard atmospheric conditions |
| Reliability Test - Drop | Frequency change 5ppm, Resistance change 15% | From 55cm height onto wood board, 3 times |
| Reliability Test - Vibration | Frequency change 5ppm, Resistance change 15% | 10~55Hz, 1.5mm amplitude, 2 hours per axis (X, Y, Z) |
| Reliability Test - Thermal Shock | Frequency change 5ppm, Resistance change 15% | 25 cycles: -403 (30 min) to 852 (30 min), 3 min transition |
| Reliability Test - Hermeticity | Leak rate 110-9Pa.m3/s | Helium pressure: 50.5Kg/cm2, 120 min |
| Reliability Test - Resistance to Soldering Heat | Frequency change 5ppm, Resistance change 15% | Wave crest temp: 260C10C, 155 sec |
| Reliability Test - Solderability | 90% coverage after dipping | Temp: 260C10C, Soak time: 31 sec |
| Reliability Test - High Temp/High Humidity | Frequency change 5ppm, Resistance change 15%, No rust on surface | 60C2, 90%~95% RH, 240 hours |
| Reliability Test - High Temperature Test | Frequency change 5ppm, Resistance change 15% | 85C2, 240 hours |
| Reliability Test - Low Temperature Test | Frequency change 5ppm, Resistance change 15% | -40C2, 240 hours |
| Reliability Test - Life Test | Frequency change 5ppm, Resistance change 15% | Voltage: 5V, Temp: 25, 1000 hours |
2207271530_SJK-7E27000E18UCG_C524670.pdf
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