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YXC X49SM18432MSD2SC Crystal X49SM18432MSD2SC
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- YXC X49SM18432MSD2SC
- Type
- YXC Yangxing Technology
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- YXC
- Electronic Component
- X49SM18432MSD2SC
- Electronic Component
- 1
- Package
- HC-49S-SMD
- Electronic Component
- Passive Crystal Oscillator
- Electronic Component
- 0.91g
- Frequency
- 18.432MHz
- Electronic Component
- 1
- Electronic Component
- BM0230877988
- Operating Temperature
- 20℃~+70℃
- Electronic Component
- ±20ppm
- Crystal Oscillator Type
- SMDCrystal Oscillator
- Load Capacitor
- 20pF
- Frequency
- ±30ppm
- 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.
X49SM18432MSD2SC 产品概述
一、产品简介
X49SM18432MSD2SC 为 YXC（扬兴科技）出品的无源贴片晶振，标称频率 18.432 MHz，适配 SMD 工艺的 HC-49S-SMD 封装。该器件为无源晶体元件，需配合外部振荡器电路（如 Pierce 架构的反相器或微控制器内部振荡器）使用，广泛用于对时基精度有较高要求的数字系统。
二、主要技术参数
- 频率：18.432 MHz
- 常温频差：±20 ppm（室温标称偏差）
- 负载电容：20 pF（标称 CL）
- 频率稳定度：±30 ppm（通常指温度范围内的综合稳定性）
- 工作温度：-20 ℃ ～ +70 ℃
- 封装：HC-49S-SMD（贴片型）
- 类型：无源晶振
三、特点与优势
- 精度适中：18.432 MHz 配合 ±20 ppm 常温频差，满足通信串口、计时等对分频精度要求高的应用。
- 兼容性好：HC-49S-SMD 封装便于自动贴装与回流焊，适配主流 SMT 生产线。
- 稳定性可靠：±30 ppm 的频率稳定度在典型商业温度范围内可提供稳定时基。
- 成本与性能平衡：适合中低成本批量产品对时钟精度的需求。
四、典型应用
- MCU 时钟与 UART/串口通讯（18.432 MHz 可整除常用波特率）
- 工业控制与仪表计时电路
- 通信设备中的本振或参考时钟
- 需要外部精确时基的消费类电子与嵌入式系统
五、选型与电路建议
- 作为无源晶振，需与一个反相器或专用晶振驱动器配合构成振荡回路，常用的为 Pierce 架构。
- 负载电容选型：两端电容相等时，单个电容约等于 2×CL 减去 PCB 与引脚寄生电容（通常 2–5 pF）。以 CL=20 pF 为例，建议尝试 30–36 pF 的贴片电容并通过实际测量微调。
- 布线与布局：晶体与两端电容应尽量靠近 MCU 或振荡器引脚放置，联线最短且避免与其他高速信号近邻布线，以减小干扰与寄生电容。
- 驱动与老化：避免过大驱动电平以防止晶体过驱动和加速老化；长期频率漂移请按出厂老化数据与应用需求留有裕量。
六、封装与焊接提示
- HC-49S-SMD 为贴片形式，应按照制造商推荐的回流焊温度曲线执行焊接工艺；如需手工焊接或二次加工，请遵循温度与时间限制以免损伤晶体。
- 运输与存储时注意防潮、防静电；若长期存放或受潮，应按厂商建议进行干燥处理（请参考出货数据表）。
七、品质与供货
- 建议在设计初期索取 YXC 的样品与完整数据手册进行验证测试；批量采购前可申请老化与可靠性报告以评估长期稳定性。
- 对关键应用场合，建议在产品开发阶段进行环境与温度循环测试，确认在-20～+70 ℃ 工作范围内的频率表现满足系统要求。
如需更详细的电气特性、老化曲线、回流焊工艺或 PCB 推荐封装尺寸，请提供联系方式或直接向扬兴科技索取 X49SM18432MSD2SC 的官方技术资料与样品。
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