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Specifications
Normal temperature Frequency Tolerance:
±10ppm
Frequency Stability:
±30ppm
Load Capacitance:
18pF
Operating Temperature:
-40℃~+85℃
Frequency:
40MHz
Mfr. Part #:
7U40000E18UCG
Package:
SMD3225-4P
Key Attributes
Model Number:
7U40000E18UCG
Product Description
Product Overview
The Series 7U is a seam-sealed ceramic surface mount quartz crystal unit in a 3.2x2.5mm package. It offers a center frequency of 40.000MHz with a load capacitance of 18pF and a frequency tolerance of 10ppm at 25C. This unit is designed for operation in a temperature range of -40C to +85C and features RoHS, REACH, and HF compliance.
Product Attributes
- Brand: SJK ()
- Origin: Shenzhen, China
- Certifications: RoHS, REACH, HF
- Package Type: 3.2*2.5MM Surface Mount
- Minimum Packaging: 3000pcs/real
- Moisture Sensitivity Level: Level 1
Technical Specifications
| Parameter | Specification |
| Output Frequency | 40.000000MHz |
| Vibration Mode | AT/Fundamental Frequency |
| Frequency Tolerance (@ 25C) | 10 ppm max |
| Load Capacitance (CL) | 18.0 PF |
| Frequency Stability Over Operating Temperature | 30ppm max |
| 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 |
| Drop Test | Frequency change 5ppm, Resistance change 15% after 3 drops from 55cm onto wood board. |
| Vibration Test | Frequency change 5ppm, Resistance change 15% after 2 hours vibration (10-55Hz, 1.5mm amplitude) in X, Y, Z directions. |
| Thermal Shock Test | Frequency change 5ppm, Resistance change 15% after 25 cycles of -40C (30min) to +85C (30min). |
| Hermeticity Test | Leak rate 110-9Pa.m3/s with 50.5Kg/cm2 Helium pressure for 120 minutes. |
| Resistance to Soldering Heat | Frequency change 5ppm, Resistance change 15% after 155 seconds at 260C10C. |
| Solderability Test | Pin coverage 90% after 31 seconds dip in 260C10C. |
| High Temperature & Humidity Test | Frequency change 5ppm, Resistance change 15% after 240 hours at 60C2C / 90%~95% humidity. No rust on product surface. |
| High Temperature Test | Frequency change 5ppm, Resistance change 15% after 240 hours at 85C2C. |
| Low Temperature Test | Frequency change 5ppm, Resistance change 15% after 240 hours at -40C2C. |
| Life Test | Frequency change 5ppm, Resistance change 15% after 1000 hours at 5V, 25. |
2303170930_SJK-7U40000E18UCG_C5375513.pdf
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