晶振在蓝牙模块中无处不在，常用的四款晶振是SMD2016，SMD2520，SMD3225，SMD5032贴片晶振，使用的频率范围：12MHz，16MHZ，20MHz，24MHZ，26MHZ，32MHz，另外还有一款频率为32.768KHZ。晶振是非常复杂的频率元器件。
日本进口爱普生晶振FA-20H，是一款石英晶体谐振器，小体积晶振尺寸2.5x2.0mm无源晶振，四脚贴片晶振，频率范围12MHz至54MHz。具有超小型，轻薄型，耐热及耐环境特性，主要用于移动电话，智能手机，蓝牙模块，无线-局域网，儿童用游戏机，ISM频段电台广播，MPU时钟等。
常用封装2520mm晶振Q24FA20H0007300用于蓝牙模块晶振应用
| 爱普生晶振 |
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 频率
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 负载电容
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    频率公差
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| Q24FA20H0000100 | 2.5x2x0.55mm | FA-20H | 18.000000MHz | 10pF | +/-10ppm | +/-20ppm | -30to+85°C |
| Q24FA20H0000300 | 2.5x2x0.55mm | FA-20H | 40.000000MHz | 9pF | +/-10ppm | +/-18ppm | -20to+70°C |
| Q24FA20H0000500 | 2.5x2x0.55mm | FA-20H | 26.000000MHz | 9pF | +/-10ppm | +/-10ppm | -20to+75°C |
| Q24FA20H0000600 | 2.5x2x0.55mm | FA-20H | 26.000000MHz | 10pF | +/-10ppm | +/-10ppm | -20to+70°C |
| Q24FA20H0000800 | 2.5x2x0.55mm | FA-20H | 48.000000MHz | 7pF | +/-50ppm | +/-30ppm | -20to+70°C |
| Q24FA20H0002900 | 2.5x2x0.55mm | FA-20H | 40.000000MHz | 8pF | +/-10ppm | +/-15ppm | -20to+75°C |
| Q24FA20H0003100 | 2.5x2x0.55mm | FA-20H | 40.000000MHz | 9pF | +/-10ppm | +/-15ppm | -20to+75°C |
| Q24FA20H0003600 | 2.5x2x0.55mm | FA-20H | 40.000000MHz | 11.5pF | +/-10ppm | +/-15ppm | -20to+75°C |
| Q24FA20H0003800 | 2.5x2x0.55mm | FA-20H | 40.000000MHz | 12pF | +/-10ppm | +/-10ppm | -20to+70°C |
| Q24FA20H0003900 | 2.5x2x0.55mm | FA-20H | 26.000000MHz | 9pF | -9/+11ppm | -10/+8ppm | -20to+75°C |
| Q24FA20H0004400 | 2.5x2x0.55mm | FA-20H | 16.000000MHz | 9pF | +/-10ppm | +/-12ppm | -20to+75°C |
| Q24FA20H0004700 | 2.5x2x0.55mm | FA-20H | 40.000000MHz | 8.5pF | +/-15ppm | +/-15ppm | -20to+85°C |
| Q24FA20H0005000 | 2.5x2x0.55mm | FA-20H | 32.000000MHz | 16pF | +/-10ppm | +/-25ppm | -40to+85°C |
| Q24FA20H0005100 | 2.5x2x0.55mm | FA-20H | 16.000000MHz | 12pF | +/-10ppm | +/-10ppm | -15to+75°C |
| Q24FA20H0005200 | 2.5x2x0.55mm | FA-20H | 40.000000MHz | 9pF | +/-10ppm | +/-10ppm | -20to+75°C |
| Q24FA20H0005300 | 2.5x2x0.55mm | FA-20H | 16.000000MHz | 9pF | +/-20ppm | +/-20ppm | -20to+70°C |
| Q24FA20H0005400 | 2.5x2x0.55mm | FA-20H | 24.000000MHz | 12pF | +/-30ppm | +/-30ppm | -20to+75°C |
| Q24FA20H0005900 | 2.5x2x0.55mm | FA-20H | 16.000000MHz | 6pF | +/-10ppm | +/-12ppm | -20to+75°C |
| Q24FA20H0006600 | 2.5x2x0.55mm | FA-20H | 16.000000MHz | 9pF | +/-30ppm | +/-30ppm | -20to+75°C |
| Q24FA20H0006900 | 2.5x2x0.55mm | FA-20H | 40.000000MHz | 10pF | +/-10ppm | +/-15ppm | -30to+85°C |
| Q24FA20H0007000 | 2.5x2x0.55mm | FA-20H | 26.000000MHz | 8pF | +/-10ppm | +/-10ppm | -20to+75°C |
| Q24FA20H0007300 | 2.5x2x0.55mm | FA-20H | 26.000000MHz | 10pF | +/-10ppm | +/-10ppm | -20to+75°C |
| Q24FA20H0007400 | 2.5x2x0.55mm | FA-20H | 26.000000MHz | 10.5pF | +/-10ppm | +/-10ppm | -20to+75°C |
| Q24FA20H0007700 | 2.5x2x0.55mm | FA-20H | 26.000000MHz | 12pF | +/-10ppm | +/-10ppm | -20to+75°C |
| Q24FA20H0007900 | 2.5x2x0.55mm | FA-20H | 26.000000MHz | 16pF | +/-10ppm | +/-10ppm | -20to+75°C |
| Q24FA20H0008500 | 2.5x2x0.55mm | FA-20H | 24.000000MHz | 10pF | +/-10ppm | +/-10ppm | -20to+75°C |
| Q24FA20H0008600 | 2.5x2x0.55mm | FA-20H | 24.576000MHz | 8pF | +/-15ppm | +/-15ppm | -20to+75°C |
| Q24FA20H0008700 | 2.5x2x0.55mm | FA-20H | 30.000000MHz | 10pF | +/-10ppm | +/-10ppm | -20to+70°C |
| Q24FA20H0009200 | 2.5x2x0.55mm | FA-20H | 24.000000MHz | 10pF | +/-10ppm | +/-20ppm | -40to+85°C |
| Q24FA20H0009300 | 2.5x2x0.55mm | FA-20H | 12.000000MHz | 10pF | +/-30ppm | +/-30ppm | -20to+70°C |
| Q24FA20H0009500 | 2.5x2x0.55mm | FA-20H | 27.000000MHz | 7pF | +/-10ppm | +/-10ppm | -20to+75°C |
| Q24FA20H0034600 | 2.5x2x0.55mm | FA-20H | 31.250000MHz | 12pF | +/-50ppm | +/-50ppm | -40to+85°C |
| Q24FA20H0035200 | 2.5x2x0.55mm | FA-20H | 16.000000MHz | 9pF | +/-10ppm | +/-10ppm | -20to+75°C |
| Q24FA20H0035500 | 2.5x2x0.55mm | FA-20H | 25.000000MHz | 16pF | +/-10ppm | +/-15ppm | -30to+85°C |
| Q24FA20H0036400 | 2.5x2x0.55mm | FA-20H | 32.000000MHz | 12pF | +/-10ppm | +/-13ppm | -30to+85°C |
| Q24FA20H0037100 | 2.5x2x0.55mm | FA-20H | 32.000000MHz | 6pF | +/-10ppm | +/-13ppm | -30to+85°C |
| Q24FA20H0037200 | 2.5x2x0.55mm | FA-20H | 16.000000MHz | 15pF | +/-20ppm | +/-30ppm | -20to+85°C |
| Q24FA20H0038000 | 2.5x2x0.55mm | FA-20H | 32.000000MHz | 16pF | +/-10ppm | +/-20ppm | -40to+85°C |
| Q24FA20H0038100 | 2.5x2x0.55mm | FA-20H | 28.636360MHz | 30pF | +/-30ppm | +/-30ppm | -40to+85°C |
| Q24FA20H0038400 | 2.5x2x0.55mm | FA-20H | 30.000000MHz | 15pF | +/-10ppm | +/-20ppm | -40to+85°C |
| Q24FA20H0038600 | 2.5x2x0.55mm | FA-20H | 12.000000MHz | 10pF | +/-20ppm | +/-25ppm | -20to+75°C |
| Q24FA20H0038700 | 2.5x2x0.55mm | FA-20H | 16.384000MHz | 10pF | +/-15ppm | +/-15ppm | -20to+70°C |
| Q24FA20H0039000 | 2.5x2x0.55mm | FA-20H | 25.000000MHz | 18pF | +/-20ppm | +/-18ppm | -40to+85°C |
| Q24FA20H0039100 | 2.5x2x0.55mm | FA-20H | 16.000000MHz | 16pF | +/-20ppm | +/-30ppm | -20to+70°C |
| Q24FA20H0039400 | 2.5x2x0.55mm | FA-20H | 24.000000MHz | 12pF | +/-10ppm | +/-19ppm | -40to+85°C |
| Q24FA20H0040400 | 2.5x2x0.55mm | FA-20H | 25.000000MHz | 12pF | +/-10ppm | +/-10ppm | -20to+70°C |
| Q24FA20H0041800 | 2.5x2x0.55mm | FA-20H | 16.000000MHz | 12pF | +/-20ppm | +/-40ppm | -40to+85°C |
| Q24FA20H0042200 | 2.5x2x0.55mm | FA-20H | 24.000000MHz | 20pF | +/-30ppm | +/-20ppm | -20to+75°C |
| Q24FA20H0042400 | 2.5x2x0.55mm | FA-20H | 27.000000MHz | 20pF | +/-30ppm | +/-30ppm | -20to+75°C |
| Q24FA20H0042800 | 2.5x2x0.55mm | FA-20H | 27.120000MHz | 10pF | +/-10ppm | +/-30ppm | -40to+85°C |
| Q24FA20H0043100 | 2.5x2x0.55mm | FA-20H | 27.120000MHz | 18pF | +/-20ppm | +/-30ppm | -40to+85°C |
| Q24FA20H0043400 | 2.5x2x0.55mm | FA-20H | 24.000000MHz | 9pF | +/-10ppm | +/-10ppm | -20to+75°C |
| Q24FA20H0044200 | 2.5x2x0.55mm | FA-20H | 16.000000MHz | 8pF | +/-10ppm | +/-11ppm | -20to+75°C |
| Q24FA20H0045900 | 2.5x2x0.55mm | FA-20H | 25.000000MHz | 12pF | +/-30ppm | +/-30ppm | -20to+70°C |
| Q24FA20H0047800 | 2.5x2x0.55mm | FA-20H | 32.000000MHz | 12pF | +/-10ppm | +/-25ppm | -40to+85°C |
| Q24FA20H0048500 | 2.5x2x0.55mm | FA-20H | 16.000000MHz | 10pF | +/-10ppm | +/-10ppm | -20to+75°C |
| Q24FA20H0049200 | 2.5x2x0.55mm | FA-20H | 25.400000MHz | 10pF | +/-10ppm | +/-10ppm | -20to+75°C |
| Q24FA20H0049600 | 2.5x2x0.55mm | FA-20H | 40.000000MHz | 8pF | +/-10ppm | +/-10ppm | -20to+75°C |
常用封装2520mm晶振Q24FA20H0007300用于蓝牙模块晶振应用
晶振特点和属性:
1. 按形状区分晶振有(SMD贴片晶振)和DIP(插件晶振)两种。贴片晶振价格跟插件晶振相对比下，贴片晶振价格贵一些。
2. 按频率区分贴片晶振有MHZ和KHZ。MHZ常用封装的有SMD2016、SMD2520、SMD3225、SMD5032、SMD6035、SMD7050。而KHZ最常用的频率32.768KHZ；在手机和蓝牙应用的晶振频率有：12MHZ，16MHZ，24 MHZ，26 MHZ，32MHZ贴片晶振配套使用。
3. 按性能区分贴片晶振分为：有源晶振（石英晶体振荡器、温补振荡器、压控振荡器、恒温振荡器）和无源晶振（石英晶体谐振器、陶瓷晶振）。
4. 按材质区分贴片晶振分为金属封装和陶瓷封装。
SMI晶振,86M0368 -16,86SMX进口晶振,6G相关设备晶振
日本SMI晶体,53SMX石英晶振,53M320-16,6G基站晶振