WMSIC Electronic Components

SCTF SX3B12.288F1010F30

ModelSX3B12.288F1010F30
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 SX3B12.288F1010F30
Type
SCTF
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SCTF
Electronic Component
SX3B12.288F1010F30
Electronic Component
1
Package
SMD3225-4P
Electronic Component
Passive Crystal Oscillator
Electronic Component
0.045g
Frequency
12.288MHz
Electronic Component
1
Electronic Component
BM0266107530
Operating Temperature
40℃~+85℃
Electronic Component
±10ppm
Crystal Oscillator Type
SMDCrystal Oscillator
Load Capacitor
10pF
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.

SX3B12.288F1010F30 无源贴片晶振产品概述

一、产品定位与核心特征

SX3B12.288F1010F30是星通时频(SCTF) 推出的工业级无源贴片晶振,针对中低端通信、工业控制等场景设计,核心定位为「高性价比、宽温稳定的时钟参考源」。其核心特征可总结为:

  • 12.288MHz标准频率(适配串口、SPI等常见通信协议);
  • SMD3225-4P小封装(3.2×2.5mm,适合高密度PCB);
  • ±10ppm常温频差(满足多数MCU时钟精度需求);
  • -40℃~+85℃宽温范围(覆盖工业环境典型温度区间)。

二、关键参数详解

1. 频率与频差

频率为12.288MHz,是串口通信(9600bps、115200bps)、SPI总线、UART等协议的常用整数倍频率,可避免通信时的时钟偏移问题;常温频差±10ppm(即±122.88Hz),满足单片机、传感器模块的时钟精度要求(一般MCU要求频差≤±20ppm即可稳定通信)。

2. 负载电容与封装

负载电容为10pF,与SMD3225-4P封装的内部寄生电容(约2~3pF)匹配,无需额外复杂电路设计;封装采用4引脚贴片结构,体积小巧,兼容主流贴片机生产,适合批量应用。

3. 频率稳定度

全温范围频率稳定度为**±30ppm**,覆盖-40℃~+85℃温区,可有效抑制极端温度下的频率漂移(如工业现场的低温启动、高温持续运行),避免因频率偏移导致的通信错误或系统卡顿。

4. 等效串联电阻(ESR)

ESR为100Ω,低于多数MCU振荡电路的起振阈值(一般≤150Ω即可稳定起振),确保晶振在通电后快速进入稳定振荡状态,减少系统启动延迟。

5. 温区范围

工作温度为**-40℃~+85℃**,符合工业级温度标准,可用于户外设备、车载辅助系统(非车规级但满足宽温)、智能电表等场景。

三、典型应用场景

SX3B12.288F1010F30因成本与性能平衡,广泛应用于以下领域:

  • 工业控制:PLC模块、传感器节点、电机控制器的时钟源;
  • 通信设备:串口转USB模块、蓝牙低功耗(BLE)模块、LoRa网关的参考时钟;
  • 消费电子:智能家居设备(如智能门锁、温湿度传感器)、智能电表的MCU时钟;
  • 车载电子:车载信息娱乐系统的辅助时钟(如蓝牙模块、USB通信)。

四、性能优势与可靠性

  1. 成本与性能平衡:无源晶振无内置振荡电路,成本仅为有源晶振的1/3~1/2,同时满足多数场景的精度需求;
  2. 宽温稳定性:全温范围±30ppm漂移,避免极端温度下的通信中断;
  3. 起振可靠性:100Ω低ESR配合10pF负载电容,可快速稳定起振,无需额外匹配电路;
  4. 封装兼容性:SMD3225是通用贴片封装,主流SMT生产线均可兼容,生产效率高。

五、应用注意事项

  1. 负载电容匹配:必须外接10pF±5% 的陶瓷电容(如0603封装),避免因电容偏差导致频率偏移;
  2. 布线设计:晶振电路需远离高频干扰源(如开关电源、射频模块),布线尽量短且对称,减少寄生电容影响;
  3. 温区适配:若应用场景温度低于-40℃或高于85℃,需更换宽温范围更大的型号(如-55℃~+125℃);
  4. 批量一致性:SCTF作为国内时频器件厂商,产品一致性较好,适合工业批量应用,可降低生产不良率。

综上,SX3B12.288F1010F30是一款「高性价比、宽温稳定」的无源贴片晶振,适合对成本敏感且需满足工业级温度要求的通信、控制类场景。

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