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Specifications
Normal temperature Frequency Tolerance:
±20ppm
Frequency Stability:
±30ppm
Load Capacitance:
20pF
Operating Temperature:
-40℃~+85℃
Frequency:
48MHz
Mfr. Part #:
7U48000F20UCG
Package:
SMD3225-4P
Key Attributes
Model Number:
7U48000F20UCG
Product Description
Product Overview
The SJK Series 7U is a seam-sealed ceramic surface mount quartz crystal unit with a 3.2*2.5mm package. It is designed for applications requiring stable frequency output and offers a wide operating temperature range.
Product Attributes
- Brand: SJK
- Origin: (Shenzhen Jingkexin Industrial Co., Ltd.)
- Package Type: 3.2*2.5mm Surface Mount
- Sealing: Seam Sealed Ceramic
- Environmental Certifications: RoHS, REACH, HF
- Moisture Sensitivity Level: Level 1
- Minimum Packaging: 3000pcs/reel
Technical Specifications
| Parameter | Specification | Details |
|---|---|---|
| Product Name | (SMD Crystal) | SMD3225 48.000MHZ 20PF 20PPM -40~85 |
| Part Number (P/N SJK) | 7U48000F20UCG | |
| Output Frequency | 48.000000MHz | |
| Vibration Mode | AT/Fundamental | |
| Frequency Tolerance (@ 25C) | 30 ppm max | |
| Load Capacitance (CL) | 20.0 PF | |
| Frequency Stability (Operating Temp) | -20 C to +70 C | 10ppm max |
| -40 C to +85 C | 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 | |
| Testing Conditions | Ambient temperature: 255, Relative humidity: 40%~70% | |
| Measurement Equipment | S&A250B or equivalent | |
Reliability Test Specification
| No. | Test Item | Test Condition | Standard Requirement |
|---|---|---|---|
| 1 | Drop | Free fall from 55cm height onto a wooden board, 3 times | Frequency change 5ppm, Resistance change 15% before and after test |
| 2 | Vibration | Frequency: 10~55Hz, Amplitude: 1.5mm, Duration: 2 hours per direction (X, Y, Z) | Frequency change 5ppm, Resistance change 15% before and after test |
| 3 | Thermal Shock | 25 cycles of high/low temperature in a test chamber. Low temp: -403 (30 min), High temp: 852 (30 min). Temp change every 3 minutes. | Frequency change 5ppm, Resistance change 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, Duration: 155 seconds | Frequency change 5ppm, Resistance change 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 change 5ppm, Resistance change 15% before and after test. 2. Product surface must not rust. |
| 8 | High Temperature Test | Temperature: 85C2C, Duration: 240 hours | Frequency change 5ppm, Resistance change 15% before and after test |
| 9 | Low Temperature Test | Temperature: -40C2C, Duration: 240 hours | Frequency change 5ppm, Resistance change 15% before and after test |
| 10 | Life Test | Voltage: 5V, Temperature: 25, Duration: 1000 hours | Frequency change 5ppm, Resistance change 15% before and after test |
Company Address: 3C1212041206
Phone: 0755-82507042
Fax: 0755-88353718
Website: http://www.q-crystal.com.cn
2207271530_SJK-7U48000F20UCG_C2892060.pdf
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