WMSIC Electronic Components

HCI 3437S-32.768DT07LLL 3437S

Model3437S-32.768DT07LLL
PackageHC-49S-SMD-Mini
BrandHCI
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
HCI 3437S-32.768DT07LLL
Type
HCI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HCI
Electronic Component
3437S-32.768DT07LLL
Electronic Component
1
Package
HC-49S-SMD-Mini
Electronic Component
Passive Crystal Oscillator
Electronic Component
0.264g
Frequency
32.768kHz
Electronic Component
1
Electronic Component
BM0264526990
Operating Temperature
40℃~+85℃
Electronic Component
±20ppm
Crystal Oscillator Type
SMDCrystal Oscillator
Load Capacitor
7pF
Frequency
±20ppm
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

3437S-32.768DT07LLL 石英晶体谐振器产品概述

一、产品基本信息

3437S-32.768DT07LLL是HCI(杭晶) 品牌推出的小型贴片石英晶体谐振器,属于HC-49S系列的迷你贴片封装(HC-49S-SMD-Mini)。该产品以32.768kHz为核心基准频率,专为需要稳定计时、频率同步的电子设备设计,具备工业级温度适应能力,是消费电子、物联网、工业控制等领域的常用时钟基准元件。

二、核心性能参数

该产品的关键参数直接决定了其适用场景与稳定性,具体如下:

  1. 基准频率:32.768kHz
    这是石英晶体谐振器的经典计时频率,因2^15=32768,可通过简单分频直接得到1Hz信号,无需复杂电路即可实现秒级计时,完美适配实时时钟(RTC)场景。

  2. 常温频差:±20ppm
    常温(25℃左右)下频率偏差为±20ppm,换算为实际频率偏差约±0.655Hz(32.768kHz×20×10^-6)。以日误差为例,该偏差对应的日误差约0.864秒,能满足日常电子钟、智能设备的计时精度要求。

  3. 负载电容:7pF
    谐振器需外接负载电容与振荡电路匹配以达到稳定振荡,7pF是该产品的推荐负载电容值。实际电路中通常采用两个电容并联(如3.3pF+3.3pF),需确保总负载电容与7pF一致,避免频率偏差或振荡不稳定。

  4. 频率稳定度:±20ppm
    涵盖工作温度范围(-40℃~+85℃)、电源波动、机械振动等因素下的频率变化,该指标与常温频差一致,说明产品温度特性优异,宽温下仍能保持稳定的频率输出。

  5. 工作温度范围:-40℃~+85℃
    符合工业级温度标准,可适应户外环境(如低温严寒、高温暴晒)、车载电子(如发动机舱附近)等恶劣工况,无需额外温控措施即可稳定工作。

三、典型应用场景

3437S-32.768DT07LLL的参数特性使其适配多领域场景:

  1. 实时时钟(RTC)模块
    智能手表、智能家居控制器、工业数据记录仪、ATM机等设备的计时核心,保证时间同步与记录的准确性。

  2. 物联网(IoT)终端
    传感器节点、低功耗蓝牙(BLE)模块、LoRa网关等设备的时间基准,支持设备间的同步通信与数据时间戳标记。

  3. 消费电子
    计算器、电子闹钟、小型家电(如智能电饭煲)、儿童玩具等产品的计时电路,实现精准计时功能。

  4. 工业控制设备
    PLC(可编程逻辑控制器)、SCADA系统、数据采集器等的基准时钟,保证工业自动化流程的时序控制精度。

  5. 车载电子
    车载信息娱乐系统、胎压监测模块、行车记录仪等的时间基准,适应车载环境的宽温度与振动要求。

四、产品核心优势

相比同类产品,该谐振器具备以下突出优势:

  1. 高稳定性与精度
    ±20ppm的频差与稳定度,宽温下仍能保持精准频率输出,满足多种场景的计时与同步需求。

  2. 工业级宽温适应
    -40℃~+85℃的工作温度范围,覆盖大部分户外与工业应用场景,可靠性更高。

  3. 小型化贴片封装
    HC-49S-SMD-Mini封装体积紧凑,适合高密度PCB设计,可有效缩小设备体积,适配便携式与小型化产品。

  4. 杭晶品牌可靠性
    HCI(杭晶)是国内石英晶体行业的资深厂商,产品经过严格可靠性测试(如振动、冲击、老化),批次一致性好,批量应用时无需额外校准。

  5. 低功耗适配
    32.768kHz是低功耗振荡频率,配合谐振器的低损耗特性,适合电池供电的便携式设备(如智能手环),延长续航时间。

五、选型与使用注意事项

为保证产品性能稳定,需注意以下要点:

  1. 负载电容匹配
    必须使用7pF左右的外接电容,实际电路中需计算谐振器与电容的等效负载电容,避免因电容不匹配导致频率偏差或振荡失效。

  2. 焊接工艺控制
    贴片封装采用回流焊时,需控制峰值温度不超过260℃,焊接时间不超过10秒;手工焊接需使用恒温烙铁(温度≤350℃),避免过热损坏晶体内部结构。

  3. 电路布局优化
    谐振器应靠近MCU的振荡引脚,走线长度尽量缩短,避免与高频信号线平行,减少电磁干扰(EMI)对频率稳定性的影响。

  4. 存储与运输
    存储温度范围为-55℃~+125℃,湿度≤60%RH,避免长期暴露在高湿环境中;运输时需使用防静电包装,防止静电损坏晶体。

  5. 批次与规格确认
    批量采购前需确认型号参数(如负载电容、工作温度)与实际需求一致,杭晶产品支持定制化参数(如更高稳定度、特殊封装),可根据场景调整。

综上,3437S-32.768DT07LLL凭借稳定的性能、宽温适应能力与小型化设计,成为多领域时钟基准的优选元件,能有效满足各类设备的计时与同步需求。

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