<
>
Specifications
Normal temperature Frequency Tolerance:
±10ppm
Frequency Stability:
±30ppm
Operating Temperature:
-40℃~+85℃
Load Capacitance:
20pF
Frequency:
28.224MHz
Mfr. Part #:
7U28224E20UCG
Package:
SMD3225-4P
Key Attributes
Model Number:
7U28224E20UCG
Product Description
Product Overview
The Series 7U is a seam-sealed ceramic surface mount quartz crystal unit with a 3.2*2.5mm package. It offers precise frequency control and stability over a wide operating temperature range, making it suitable for various electronic applications.
Product Attributes
- Brand: SJK
- Origin: Shenzhen, China
- Certifications: RoHS, REACH, HF
- Package: 3.2*2.5mm Surface Mount
- Sealing: Seam Sealed Ceramic
- Minimum Packaging: 3000pcs/real
- Moisture Sensitivity Level: Level 1
Technical Specifications
| Parameter | Specification | Condition |
| Output Frequency | 28.224000MHz | |
| 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 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 | Standard atmospheric conditions |
| Testing Condition (Relative Humidity) | 40%~70% | Standard atmospheric conditions |
| Reliability Test: Drop | Frequency change 5ppm, ESR change 15% | 55cm height onto wood board, 3 times |
| Reliability Test: Vibration | Frequency change 5ppm, ESR change 15% | 10~55Hz, 1.5mm amplitude, 2 hours per axis (X,Y,Z) |
| Reliability Test: Thermal Shock | Frequency change 5ppm, ESR change 15% | 25 cycles: -403 (30 min) to 852 (30 min), 3 min transition |
| Reliability Test: Hermeticity | Leakage rate 110-9Pa.m3/s | Helium pressure: 50.5Kg/cm2, 120 min |
| Reliability Test: Resistance to Soldering Heat | Frequency change 5ppm, ESR change 15% | Peak temp: 260C10C, 155 sec |
| Reliability Test: Tinning Test | Pin coverage 90% | Temp: 260C10C, 31 sec immersion |
| Reliability Test: High Temp. & Humidity | Frequency change 5ppm, ESR change 15%; No rust on surface | 60C2, 90%~95% RH, 240 hours |
| Reliability Test: High Temp. Test | Frequency change 5ppm, ESR change 15% | 85C2, 240 hours |
| Reliability Test: Low Temp. Test | Frequency change 5ppm, ESR change 15% | -40C2, 240 hours |
| Reliability Test: Life Test | Frequency change 5ppm, ESR change 15% | Voltage: 5V, Temp: 25, 1000 hours |
2207271530_SJK-7U28224E20UCG_C524757.pdf
Request A Quote
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
