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Specifications
Normal temperature Frequency Tolerance:
±10ppm
Frequency Stability:
±30ppm
Operating Temperature:
-40℃~+85℃
Load Capacitance:
12pF
Frequency:
27.12MHz
Mfr. Part #:
7U27120E12UCG
Package:
SMD3225-4P
Key Attributes
Model Number:
7U27120E12UCG
Product Description
QUARTZ CRYSTAL UNIT SERIES 7U
The 7U Series is a seam-sealed ceramic, surface-mount quartz crystal unit with a 3.2x2.5mm package. It is designed for applications requiring precise frequency control.
Product Attributes
- Brand: SJK
- Origin: Shenzhen, China
- Certifications: RoHS, REACH, HF
- Package Type: 3.2x2.5mm Surface Mount
- Sealing: Seam Sealed Ceramic
- Minimum Packaging: 3000pcs/real
- Moisture Sensitivity Level: Level 1
Technical Specifications
| Parameter | Specification | Conditions |
| Output Frequency | 27.120000MHz | |
| Vibration Mode | AT/Fundamental Frequency | |
| Frequency Tolerance | 10 ppm max | at 25C |
| Load Capacitance (CL) | 12.0 PF | |
| Frequency Stability Over Operating Temperature | 10ppm max / 30ppm max | -20 C to +70 C / -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 |
Reliability Test Specification
| No. | Test Item | Test Conditions | Standard Requirements |
| 1 | Drop | Free fall from 55cm height onto a wooden board, 3 times. | Frequency change within 5ppm, resistance change within 15% before and after test. |
| 2 | Vibration | Frequency: 10~55Hz, Amplitude: 1.5mm. Duration: 2 hours per orientation (X, Y, Z). | Frequency change within 5ppm, resistance change within 15% before and after test. |
| 3 | Thermal Shock | 25 cycles of high and low temperature. Low temp: -403C (30 min), High temp: 852C (30 min). Transition time: 3 minutes. | Frequency change within 5ppm, resistance change within 15% before and after test. |
| 4 | Hermeticity | Helium pressure: 50.5Kg/cm, Helium pressurization time: 120 minutes. | Leak rate: 110-9Pa.m3/s |
| 5 | Resistance to Soldering Heat | Wave peak temperature: 260C10C. Time: 155 seconds. | Frequency change within 5ppm, resistance change within 15% before and after test. |
| 6 | Solderability Test | Temperature: 260C10C. Immersion time: 31 seconds. | Solder coverage on pins 90%. |
| 7 | High Temperature High Humidity | Temperature: 60C2C. Humidity: 90%~95%. Duration: 240 hours. | 1. Frequency change within 5ppm, resistance change within 15% before and after test. 2. No rust on product surface. |
| 8 | High Temperature Test | Temperature: 85C2C. Duration: 240 hours. | Frequency change within 5ppm, resistance change within 15% before and after test. |
| 9 | Low Temperature Test | Temperature: -40C2C. Duration: 240 hours. | Frequency change within 5ppm, resistance change within 15% before and after test. |
| 10 | Life Test | Voltage: 5V. Temperature: 25. Duration: 1000 hours. | Frequency change within 5ppm, resistance change within 15% before and after test. |
2207271530_SJK-7U27120E12UCG_C251623.pdf
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