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Specifications
Normal temperature Frequency Tolerance:
±10ppm
Frequency Stability:
±30ppm
Operating Temperature:
-40℃~+85℃
Load Capacitance:
20pF
Frequency:
20.25MHz
Mfr. Part #:
7U20250E20UCG
Package:
SMD3225-4P
Key Attributes
Model Number:
7U20250E20UCG
Product Description
Product Overview
The 7U Series Quartz Crystal Unit is a seam-sealed ceramic surface mount component 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: 3.2*2.5mm Surface Mount Ceramic
- Sealing: Seam Sealed
- Minimum Packaging: 3000pcs/reel
- Moisture Sensitivity Level: Level 1
Technical Specifications
| Parameter | Value | Unit | Condition |
|---|---|---|---|
| Output Frequency | 20.250000 | MHz | Center Frequency |
| Mode | AT/Fundamental | Vibration Mode | |
| Frequency Tolerance | 10 | ppm max | at 25C |
| Load Capacitance (CL) | 20.0 | PF | |
| Frequency Stability Over Operating Temperature | 30 | ppm max | |
| Operating Temperature Range | -40 to +85 | C | |
| Storage Temperature Range | -40 to +125 | C | |
| Shunt Capacitance (C0) | 3.0 | PF Max | |
| Driver Level (Typical) | 10 | W | |
| Equivalent Series Resistance (ESR) | 60 | Max | |
| Aging @25C (1st year Max) | 3 | ppm/year | |
| Drop Test | Frequency change 5ppm, Resistance change 15% | From 55cm height onto wood board, 3 times | |
| Vibration Test | Frequency change 5ppm, Resistance change 15% | 10~55Hz, 1.5mm amplitude, 2 hours per axis (X, Y, Z) | |
| Thermal Shock Test | Frequency change 5ppm, Resistance change 15% | 25 cycles, -40C (30min) to +85C (30min), 3min transition | |
| Hermeticity Test | Leak Rate 110-9 Pa.m/s | Helium pressure: 50.5 Kg/cm, 120 minutes | |
| Resistance to Soldering Heat | Frequency change 5ppm, Resistance change 15% | Peak temp: 260C10C, Time: 155 sec | |
| Tinning Test | Pin coverage 90% | Temp: 260C10C, Immersion time: 31 sec | |
| High Temp. & Humidity Test | Frequency change 5ppm, Resistance change 15%; No rust on surface | Temp: 60C2C, Humidity: 90%~95%, Time: 240 hours | |
| High Temp. Test | Frequency change 5ppm, Resistance change 15% | Temp: 85C2C, Time: 240 hours | |
| Low Temp. Test | Frequency change 5ppm, Resistance change 15% | Temp: -40C2C, Time: 240 hours | |
| Life Test | Frequency change 5ppm, Resistance change 15% | Voltage: 5V, Temp: 25, Time: 1000 hours |
2304131800_SJK-7U20250E20UCG_C524736.pdf
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