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Specifications
Normal temperature Frequency Tolerance:
±10ppm
Frequency Stability:
±30ppm
Operating Temperature:
-40℃~+85℃
Load Capacitance:
20pF
Frequency:
54MHz
Mfr. Part #:
7U54000E20UCG
Package:
SMD3225-4P
Key Attributes
Model Number:
7U54000E20UCG
Product Description
QUARTZ CRYSTAL UNIT SERIES 7U, SEAM SEALED CERAMIC 3.2*2.5MM SURFACE MOUNT PACKAGE
The Series 7U Quartz Crystal Unit is a seam-sealed ceramic surface mount component designed for various electronic applications. It offers a compact 3.2*2.5mm footprint and is suitable for operation within a wide temperature range.
Product Attributes
- Brand: SJK ()
- Origin: Shenzhen, China
- Package Type: 3.2*2.5mm Surface Mount, Ceramic, Seam Sealed
- Certifications: RoHS, REACH, HF
- Minimum Packaging: 3000pcs/reel
- Moisture Sensitivity Level: Level 1
Technical Specifications
| Parameter | Value | Condition |
|---|---|---|
| Output Frequency | 54.000000MHz | Center Frequency |
| Vibration Mode | AT/Fundamental Frequency | |
| Frequency Tolerance | 10 ppm max | at 25C |
| Load Capacitance (CL) | 20.0 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 Conditions | Ambient temperature: 255, Relative humidity: 40%~70% | Standard atmospheric conditions |
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 within 5ppm, resistance change within 15% before and after test |
| 2 | Vibration | Frequency: 10~55Hz, Amplitude: 1.5mm, Time: 2 hours per direction (X, Y, Z) | Frequency change within 5ppm, resistance change within 15% before and after test |
| 3 | Thermal Shock | 25 cycles of high/low temperature: -403 for 30 min, 852 for 30 min. Temperature change in 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 crest 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 leads 90% |
| 7 | High Temperature and Humidity | Temperature: 60C2C, Humidity: 90%~95%, Duration: 240 hours | Frequency change within 5ppm, resistance change within 15% before and after test. 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 |
2304131800_SJK-7U54000E20UCG_C524775.pdf
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