32.768KHz是款实时时钟晶振，它的作用是可以产生时序电路基准信号。而之所以选用32.768K是因为它是2的15次幂，是因为可以很精确的得到一秒的计时。不仅如此，包括所有的实时时钟晶振一般都是32.768或其倍频。32.768K晶振的负载电容都是12.5pf。常用32.768K晶振的电子产品有智能手机、智能手表、安防和可穿戴设备等等。也还有很多生活类、工业类电子也会常用到这款频率的进口晶振。
ECS晶振ECX-49系列是一款超小型SMD 32.768KHz晶振，提供低70kω最大值，行业标准的4.1x1.5x0.9毫米(LWH)陶瓷封装两脚贴片晶振，标准版本在+25°C时的频率容差为20ppm，C版本在+25°C时的容差为10ppm，可用负载电容为6pF、7pF、9pF或12.5pF，工作温度为-40°C至+85°C。非常适合工业，钟表电子，物联网，中央空调，通讯设备应用。
中央空调温度控制器32.768K专用晶振ECS-.327-12.5-49-TR
中央空调温度控制器32.768K专用晶振ECS-.327-12.5-49-TR
特点:
小体积尺寸：4.1x1.5mm两脚贴片晶振
扩展温度范围
符合RoHS 2和REACH标准
MSL 1号
铅饰面金
应用：物联网，雷达跟踪中心（Radar Tracking Centre的缩写），产业的，无线设备，要求低ESR的微处理器，低功耗RTC应用
| 原厂编码 | 厂家 | 型号 | 频率 | 工作温度 | 包装/封装 |
| ECS-.327-CDX-1128 | ECS Crystal | ECS-CDX | 32.768kHz | -40°C ~ 85°C | 2-SMD, No Lead |
| ECS-.327-CDX-1128 | ECS Crystal | ECS-CDX | 32.768kHz | -40°C ~ 85°C | 2-SMD, No Lead |
| ECS-.327-CDX-1128 | ECS Crystal | ECS-CDX | 32.768kHz | -40°C ~ 85°C | 2-SMD, No Lead |
| ECS-.327-12.5-39-TR | ECS Crystal | ECX-39 | 32.768kHz | -40°C ~ 85°C | 2-SMD, No Lead |
| ECS-.327-12.5-39-TR | ECS Crystal | ECX-39 | 32.768kHz | -40°C ~ 85°C | 2-SMD, No Lead |
| ECS-.327-12.5-39-TR | ECS Crystal | ECX-39 | 32.768kHz | -40°C ~ 85°C | 2-SMD, No Lead |
| ECS-.327-6-34S-TR | ECS Crystal | ECX-34S | 32.768kHz | -40°C ~ 125°C | 2-SMD, No Lead |
| ECS-.327-6-34S-TR | ECS Crystal | ECX-34S | 32.768kHz | -40°C ~ 125°C | 2-SMD, No Lead |
| ECS-.327-6-34S-TR | ECS Crystal | ECX-34S | 32.768kHz | -40°C ~ 125°C | 2-SMD, No Lead |
| ECS-.327-12.5-34S-TR | ECS Crystal | ECX-34S | 32.768kHz | -40°C ~ 125°C | 2-SMD, No Lead |
| ECS-.327-12.5-34S-TR | ECS Crystal | ECX-34S | 32.768kHz | -40°C ~ 125°C | 2-SMD, No Lead |
| ECS-.327-12.5-34S-TR | ECS Crystal | ECX-34S | 32.768k | -40°C ~ 125°C | 2-SMD, No Lead |
| ECS-.327-CDX-1293 | ECS Crystal | ECS-CDX | 32.768kHz | -40°C ~ 85°C | 2-SMD, No Lead |
| ECS-.327-CDX-1293 | ECS Crystal | ECS-CDX | 32.768kHz | -40°C ~ 85°C | 2-SMD, No Lead |
| ECS-.327-CDX-1293 | ECS Crystal | ECS-CDX | 32.768kHz | -40°C ~ 85°C | 2-SMD, No Lead |
| ECS-.327-CDX-1293 | ECS Crystal | ECS-CDX | 32.768kHz | -40°C ~ 85°C | 2-SMD, No Lead |
| ECS-.327-12.5-34RR-TR | ECS Crystal | ECX-34RR | 32.768kHz | -40°C ~ 85°C | 2-SMD, No Lead |
| ECS-.327-9-34RR-TR | ECS Crystal | ECX-34RR | 32.768kHz | -40°C ~ 85°C | 2-SMD, No Lead |
| ECS-.327-6-34RR-TR | ECS Crystal | ECX-34RR | 32.768kHz | -40°C ~ 85°C | 2-SMD, No Lead |
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