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Specifications
Normal temperature Frequency Tolerance:
±10ppm
Frequency Stability:
±30ppm
Operating Temperature:
-40℃~+85℃
Load Capacitance:
18pF
Frequency:
12MHz
Mfr. Part #:
7U12000E18UCG
Package:
SMD3225-4P
Key Attributes
Model Number:
7U12000E18UCG
Product Description
QUARTZ CRYSTAL UNIT SERIES 7U
The Series 7U Quartz Crystal Unit is a seam-sealed ceramic, surface-mount device in a 3.2*2.5mm package. It is designed for applications requiring precise frequency control and stability.
Product Attributes
- Brand: SJK ()
- Origin: Shenzhen, China
- Package Type: 3.2*2.5mm Surface Mount, Ceramic Seam Sealed
- Certifications: RoHS, REACH, HF
- Moisture Sensitivity Level: Level 1
- Minimum Packaging: 3000pcs/reel
Technical Specifications
| Parameter | Specification | Notes |
|---|---|---|
| Output Frequency | 12.000000MHz | |
| Vibration Mode | AT/Fundamental Frequency | |
| Frequency Tolerance (@25C) | 10 ppm max | |
| Load Capacitance (CL) | 18.0 pF | |
| Frequency Stability Over Operating Temperature | 10ppm max / -20 C to +70 C 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) | 100 Max | |
| Aging @25C (1st year Max) | 3ppm/year |
Reliability Test Specification
| No. | Test Item | Test Condition | Standard Requirement |
|---|---|---|---|
| 1 | Drop | Free fall from 55cm height onto a wooden board, 3 times | Frequency change 5ppm, Resistance change 15% before and after test |
| 2 | Vibration | Frequency: 10~55Hz, Amplitude: 1.5mm, Duration: 2 hours per axis (X, Y, Z) | Frequency change 5ppm, Resistance change 15% before and after test |
| 3 | Thermal Shock | 25 cycles: -403C (30 min), 852C (30 min), 3 min transition | Frequency change 5ppm, Resistance change 15% before and after test |
| 4 | Hermeticity | Helium pressure: 50.5Kg/cm, Duration: 120 min | Leak rate 110-9Pa.m/s |
| 5 | Resistance to Soldering Heat | Wave peak temp: 260C10C, Duration: 155 sec | Frequency change 5ppm, Resistance change 15% before and after test |
| 6 | Solderability Test | Temperature: 260C10C, Immersion time: 31 sec | Solder coverage 90% on pins |
| 7 | High Temp & Humidity | Temp: 60C2C, Humidity: 90%~95%, Duration: 240 hours | Frequency change 5ppm, Resistance change 15% before and after test. No rust on product surface. |
| 8 | High Temperature Test | Temp: 85C2C, Duration: 240 hours | Frequency change 5ppm, Resistance change 15% before and after test |
| 9 | Low Temperature Test | Temp: -40C2C, Duration: 240 hours | Frequency change 5ppm, Resistance change 15% before and after test |
| 10 | Life Test | Voltage: 5V, Temp: 25, Duration: 1000 hours | Frequency change 5ppm, Resistance change 15% before and after test |
2207271530_SJK-7U12000E18UCG_C524717.pdf
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