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Specifications
Normal temperature Frequency Tolerance:
±10ppm
Frequency Stability:
±30ppm
Operating Temperature:
-40℃~+85℃
Load Capacitance:
20pF
Frequency:
24.576MHz
Mfr. Part #:
7U24576E20UCG
Package:
SMD3225-4P
Key Attributes
Model Number:
7U24576E20UCG
Product Description
Product Overview
The Series 7U is a seam-sealed ceramic surface mount quartz crystal unit with a 3.2x2.5mm package. It offers a stable output frequency of 24.576MHz with a frequency tolerance of 10ppm at 25C and operates within a wide temperature range of -40C to +85C. This unit is designed for various electronic applications requiring reliable frequency control.
Product Attributes
- Brand: SJK ()
- Origin: China
- Package Type: 3.2x2.5mm Surface Mount Ceramic
- Sealing: Seam Sealed
- Certifications: RoHS, REACH, HF
- Minimum Packaging: 3000pcs/reel
- Moisture Sensitivity Level: Level 1
Technical Specifications
| Parameter | Specification |
|---|---|
| Output Frequency | 24.576000MHz |
| Vibration Mode | AT/Fundamental Frequency |
| Frequency Tolerance (at 25C) | 10 ppm max |
| Load Capacitance (CL) | 20.0 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) | 40 Max |
| Aging @25C (1st year Max) | 3ppm/year |
| Testing Condition - Ambient Temperature | 255 |
| Testing Condition - Relative Humidity | 40%~70% |
Reliability Test Specification
| No. | Test Item | Test Conditions | Standard Requirements |
|---|---|---|---|
| 1 | Drop | Free fall from 55cm height onto wooden board, 3 times | Frequency variation within 5ppm, resistance variation within 15% before and after test |
| 2 | Vibration | Frequency: 10~55Hz, Amplitude: 1.5mm, Time: 2 hours per each of X, Y, Z directions | Frequency variation within 5ppm, resistance variation within 15% before and after test |
| 3 | Thermal Shock | 25 cycles of high and low temperature in a test chamber. Low temp: -403 for 30 min, High temp: 852 for 30 min. Temp change in 3 min. | Frequency variation within 5ppm, resistance variation 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 variation within 5ppm, resistance variation within 15% before and after test |
| 6 | Solderability Test | Temperature: 260C10C, Immersion time: 31 seconds | Solder coverage on pins 90% |
| 7 | High Temperature & Humidity | Temperature: 60C2C, Humidity: 90%~95%, Duration: 240 hours | 1. Frequency variation within 5ppm, resistance variation within 15% before and after test. 2. Product surface shall not be rusted. |
| 8 | High Temperature Test | Temperature: 85C2C, Duration: 240 hours | Frequency variation within 5ppm, resistance variation within 15% before and after test |
| 9 | Low Temperature Test | Temperature: -40C2C, Duration: 240 hours | Frequency variation within 5ppm, resistance variation within 15% before and after test |
| 10 | Life Test | Voltage: 5V, Temperature: 25, Duration: 1000 hours | Frequency variation within 5ppm, resistance variation within 15% before and after test |
2207271530_SJK-7U24576E20UCG_C524743.pdf
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