WMSIC Electronic Components

SCTF SX3M32.768KM20F30TNN

ModelSX3M32.768KM20F30TNN
PackageSMD3225-4P
BrandSCTF
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
SCTF SX3M32.768KM20F30TNN
Type
SCTF
Minimum package
3000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SCTF
Electronic Component
SX3M32.768KM20F30TNN
Electronic Component
1
Package
SMD3225-4P
Electronic Component
Active Crystal Oscillator
Electronic Component
0.065g
Frequency
32.768kHz
Electronic Component
1
Electronic Component
BM0266061179
Operating Temperature
40℃~+85℃
Operating Voltage
1.62V~3.63V
Operating Current
90uA
Electronic Component
±20ppm
Output
CMOS
Frequency
±30ppm

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

SX3M32.768KM20F30TNN 有源晶振产品概述

一、产品定位与核心价值

SX3M32.768KM20F30TNN是星通时频(SCTF)推出的工业级低功耗CMOS有源晶振,专为需要高精度时钟基准、宽电压适配、长续航的电子设备设计。其核心优势在于平衡了“精度”“功耗”“环境适应性”三大关键指标,可满足从消费电子到工业场景的多样化需求,是32.768kHz时钟应用的高性价比选择。

二、基础参数全解析

作为有源晶振,该产品参数经过优化,覆盖主流应用需求:

  1. 频率特性:中心频率为32.768kHz(RTC领域通用基准频率),常温频差±20ppm(25℃环境下频率偏差≤655.36Hz,满足多数计时精度要求);全温范围(-40℃~+85℃)内频率稳定度为**±30ppm**,避免高低温下时钟漂移影响设备计时/通信精度。
  2. 电气特性:工作电压范围1.62V~3.63V,覆盖1.8V、3.3V等常见MCU/SoC供电电压,无需额外稳压电路;工作电流仅90uA(典型值),适合电池供电设备延长续航;输出模式为CMOS,兼容多数数字电路输入,无需电平转换。
  3. 封装与尺寸:采用SMD3225-4P贴片封装(3.2mm×2.5mm×1.0mm典型厚度),4引脚设计,适配高密度PCB布局,满足小型化设备需求。
  4. 环境适应性:工作温度范围-40℃~+85℃(工业级温度标准),可稳定工作于户外、车载、工业现场等严苛环境。

三、典型应用场景

该晶振的参数特性使其适配多类场景:

  1. 实时时钟(RTC)模块:智能手表、智能家居控制器、工业PLC的RTC核心基准,32.768kHz频率匹配RTC计时需求,低功耗确保纽扣电池供电下长期工作(可支持数年续航)。
  2. 低功耗物联网节点:温湿度传感器、烟雾报警器、智能门锁等电池供电设备,宽电压适配纽扣电池(3V)和锂电池(4.2V放电至3V),低电流延长换电周期。
  3. 车载电子设备:车载中控、胎压监测系统(TPMS)等,-40℃~+85℃宽温满足车载环境,宽电压兼容汽车12V转3.3V电源。
  4. 消费电子便携设备:智能手环、蓝牙耳机、智能音箱的时钟基准,小封装适配设备小型化设计,CMOS输出兼容蓝牙芯片、MCU等数字电路。

四、可靠性与设计优势

  1. 宽温频率稳定:±30ppm全温频差设计,避免极端温度下时钟精度下降(如冬季户外设备或夏季车载高温环境),确保计时/通信功能稳定。
  2. 低功耗续航保障:90uA工作电流远低于多数同类有源晶振,以3V纽扣电池为例,理论续航可达10年以上(忽略电池自放电),降低设备维护成本。
  3. 宽电压简化设计:1.62V~3.63V电压范围覆盖主流低功耗芯片供电,无需额外设计稳压电路,减少PCB元件数量,降低研发成本。
  4. 小封装适配高密度布局:SMD3225-4P封装尺寸小巧,适合智能穿戴、物联网节点等小型化设备,同时支持自动化贴片生产,提升生产效率。

五、使用注意事项

  1. 引脚定义确认:需参考SCTF官方 datasheet确认4引脚功能(通常包括VDD、GND、OUT、NC),避免接反损坏晶振。
  2. 焊接工艺规范:采用回流焊时,需遵循SCTF推荐的温度曲线(峰值温度≤260℃,回流时间≤10s),避免高温损坏晶振内部电路。
  3. 电源滤波建议:在VDD引脚并联0.1uF陶瓷电容(靠近晶振引脚),抑制电源噪声,进一步提升频率稳定性。
  4. 负载匹配说明:CMOS有源晶振内置振荡电路,无需外接负载电容,可直接连接MCU/SoC的时钟输入引脚,简化外围电路。

该产品凭借稳定的性能、灵活的适配性,已成为多领域电子设备时钟基准的优选方案。

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