WMSIC Electronic Components

HCI 3438T-32.768DTTLNNL 3438T

Model3438T-32.768DTTLNNL
PackageDT-38
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 3438T-32.768DTTLNNL
Type
HCI
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HCI
Electronic Component
3438T-32.768DTTLNNL
Electronic Component
1
Package
DT-38
Electronic Component
Passive Crystal Oscillator
Electronic Component
0.167g
Frequency
32.768kHz
Electronic Component
1
Electronic Component
BM0264982113
Operating Temperature
40℃~+85℃
Electronic Component
±10ppm
Crystal Oscillator Type
Through-hole Crystal Oscillator
Load Capacitor
12.5pF
Frequency
±10ppm
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.

HCI 3438T-32.768DTTLNNL 直插石英晶振产品概述

一、产品核心定位与身份

HCI 3438T-32.768DTTLNNL是杭晶电子(HCI)推出的工业级直插石英晶振,采用DT-38封装,核心频率为32.768kHz——这一频率是实时时钟(RTC)、计时系统的行业标准(因2^15=32768,可通过简单分频直接得到1Hz秒信号)。产品针对宽温环境下的稳定计时需求设计,兼顾精度与成本,适用于工业控制、消费电子、车载等多场景。

二、关键性能参数深度解析

1. 频率与精度参数

  • 核心频率:32.768kHz:适配DS1302、PCF8563等主流RTC芯片的标准时钟输入,无需额外分频电路即可输出1Hz秒信号,简化系统设计;
  • 常温频差:±10ppm:常温(25℃左右)下频率偏差为百万分之十,换算为实际偏差约0.32768Hz,保证计时精度(每日误差约0.86秒,年误差≤5.3分钟);
  • 频率稳定度:±10ppm:工作温度范围内(-40℃~+85℃),频率变化不超过±10ppm,宽温下仍保持稳定计时,满足工业/车载环境需求。

2. 电气与封装参数

  • 负载电容:12.5pF:晶振工作时需外部匹配12.5pF负载电容(通常为两个6.25pF电容并联),若匹配不当会导致频率偏移,需严格按规格书设置;
  • 等效串联电阻(ESR):30kΩ:晶振内阻,30kΩ属于常规低阻范围,可被大多数振荡电路(如CMOS反相器)驱动,确保起振可靠性;
  • 封装:DT-38:2引脚直插封装,尺寸小巧(典型直径3mm、高度8mm),安装方便,兼容手工焊接与批量插件生产;
  • 工作温度:-40℃~+85℃:覆盖工业级温度范围,可在严寒(-40℃)至高温(+85℃)环境下稳定工作,适合户外设备、车载电子等场景。

三、典型应用场景

  1. 实时时钟(RTC)模块:作为DS1302、PCF8563等RTC芯片的时钟源,为智能手表、电子钟、智能家居网关提供精准计时;
  2. 工业控制设备:PLC、变频器、工业传感器的计时单元,保证生产流程的时间同步与控制精度;
  3. 车载电子系统:车载导航、行车记录仪、胎压监测的计时模块,适应-40℃至+85℃的车载环境;
  4. 通信设备:基站、路由器、交换机的时间同步模块,满足网络设备的精准时间需求;
  5. 消费电子:智能手环、电子日历、玩具的计时功能,兼顾精度与成本。

四、产品核心优势

  1. 宽温稳定可靠:-40℃~+85℃范围内频率稳定度±10ppm,无温漂过大问题,适合 harsh 环境;
  2. 精度适配主流需求:常温±10ppm的频差满足绝大多数计时场景(如日常电子钟、工业控制),无需更高精度的温补晶振(TCXO),降低成本;
  3. 安装便捷:DT-38直插封装无需特殊焊接工具,手工或机器插件均可快速安装;
  4. 品牌品质保障:HCI杭晶是国内晶振行业知名厂商,产品经过多年市场验证,一致性与可靠性高。

五、使用注意事项

  1. 负载电容匹配:必须严格匹配12.5pF负载电容,若使用非标准电容会导致频率偏移,影响计时精度;
  2. 静电防护:石英晶振对静电敏感,操作时需佩戴静电手环,避免直接接触引脚;
  3. 焊接温度控制:焊接温度不宜超过260℃(烙铁头温度),焊接时间不超过3秒,避免损坏晶振内部石英片;
  4. 振荡电路设计:确保振荡电路的放大倍数足够驱动30kΩ ESR,可通过增加反馈电阻(如1MΩ)优化起振性能。

该产品以高性价比、宽温稳定的特点,成为工业与消费电子领域计时系统的主流选择,可满足多数场景下的精准计时需求。

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