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Specifications
Normal temperature Frequency Tolerance:
±20ppm
Frequency Stability:
±30ppm
Load Capacitance:
20pF
Operating Temperature:
-40℃~+85℃
Equivalent Series Resistance(ESR):
-
Frequency:
20MHz
Mfr. Part #:
7I20000F20UCG
Package:
SMD5032-4P
Key Attributes
Model Number:
7I20000F20UCG
Product Description
Product Overview
The QUARTZ CRYSTAL UNIT SERIES 7I is a seam-sealed ceramic surface mount package measuring 5.0*3.2mm. It is designed for applications requiring precise frequency control and stability.
Product Attributes
- Brand: SJK
- Origin: Shenzhen, China
- Certifications: RoHS, REACH, HF
- Package Type: Seam Sealed Ceramic, Surface Mount
- Package Dimensions: 5.0*3.2mm
- Minimum Packaging: 1000pcs/real
- Moisture Sensitivity Level: Level 1
Technical Specifications
| Parameter | Specification | Unit | Notes |
| Output Frequency | 20.000000 | MHz | Center Frequency |
| Vibration Mode | AT/Fundamental Frequency | ||
| Frequency Tolerance | ±20 | ppm max | at 25°C |
| Load Capacitance (CL) | 20 | PF | |
| Operating Temperature Range | -40 to +85 | °C | |
| Storage Temperature Range | -40 to +125 | °C | |
| Shunt Capacitance (C0) | 3.0 | PF Max | |
| Driver Level (Typical) | 100 | µW | |
| Equivalent Series Resistance (ESR) | 60 | Ω Max | |
| Aging @25°C (1st year Max) | ±3 | ppm/year | |
| Aging @25°C (Total Max) | ±30 | ppm | |
| Frequency Stability Over Operating Temperature | Not Specified | ||
Reliability Test Specification
| No. | Test Item | Test Conditions | Standard Requirements |
| 1 | Drop Test | Free fall from 55cm height onto a wooden board, 3 times | Frequency variation within ±5ppm, resistance variation within ±15% before and after test |
| 2 | Vibration Test | Frequency: 10~55Hz, Amplitude: 1.5mm, Duration: 2 hours per direction (X, Y, Z) | Frequency variation within ±5ppm, resistance variation within ±15% before and after test |
| 3 | Thermal Shock Test | 25 cycles of high and low temperature in a test chamber. Low temp: -40±3°C for 30 min, High temp: 85±2°C for 30 min. Transition time: 3 min. | Frequency variation within ±5ppm, resistance variation within ±15% before and after test |
| 4 | Hermeticity Test | Helium pressure: 5±0.5Kg/cm², Helium pressurization time: 120 minutes | Leak rate: ≤1×10-9Pa.m³/s |
| 5 | Resistance to Soldering Heat | Wave peak temperature: 260º±10ºC, Time: 15±5 seconds | Frequency variation within ±5ppm, resistance variation within ±15% before and after test |
| 6 | Solderability Test | Temperature: 260º±10ºC, Immersion time: 3±1 seconds | Solder-covered area of the pins reaches over 90% |
| 7 | High Temperature and High Humidity Test | Temperature: 60º±2ºC, 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: 85º±2ºC, Duration: 240 hours | Frequency variation within ±5ppm, resistance variation within ±15% before and after test |
| 9 | Low Temperature Test | Temperature: -40º±2ºC, Duration: 240 hours | Frequency variation within ±5ppm, resistance variation within ±15% before and after test |
| 10 | Life Test | Voltage: 5V, Temperature: 25°C, Duration: 1000 hours | Frequency variation within ±5ppm, resistance variation within ±15% before and after test |
2207271530_SJK-7I20000F20UCG_C251600.pdf
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