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S-LBZX84C2V4LT1G是乐山无线电(LRC)推出的表面贴装型2.4V稳压二极管,属于LBZX84系列低电压分支,专为小型化、低功耗电子设备设计。核心功能是提供稳定的2.4V基准电压,兼具高可靠性与宽环境适应性,适配SOT-23封装的紧凑体积,可直接集成于高密度PCB电路中。
其核心特性可概括为:
该器件的电气参数经过严格测试,核心参数的设计针对性明确:
标称稳压值2.4V,工作范围2.2V2.6V,在典型电流(1mA5mA)下无需额外校准,可满足大多数低电压基准需求。
反向偏置电压下的漏电流仅50nA,相比普通稳压管(μA级)降低两个数量级,尤其适合低功耗IoT、可穿戴设备,延长电池续航。
允许的最大功耗为300mW,结合SOT-23封装热阻(约100℃/W),结温上升控制在30℃以内,满足常规工作场景的热稳定性。
电压随电流变化的比值为100Ω,例如电流变化1mA,电压变化仅0.1V,稳压性能优于多数同类型通用器件。
-55℃至+150℃的宽范围,符合工业级器件标准,可在极端低温(户外冬季)或高温(设备内部散热区)环境下可靠工作。
S-LBZX84C2V4LT1G采用SOT-23表面贴装封装,设计优势与可靠性体现在:
尺寸仅1.6mm(长)×1.0mm(宽)×0.8mm(高),相比直插DO-35封装缩小约70%,适配智能手机、智能手环等便携设备的高密度PCB。
封装表面带有阴极标记(如色环或印刷符号),便于焊接前快速识别,避免反向安装导致器件正向导通损坏。
采用LRC成熟的玻璃钝化工艺,抑制漏电流随温度上升,增强抗ESD能力(满足HBM 2kV以上)。
适配回流焊、波峰焊等自动化贴装,焊接峰值温度可达260℃(符合JEDEC标准),存储温度范围-65℃~+150℃,满足供应链长期存储需求。
结合参数特性,该器件典型应用覆盖以下领域:
智能手机、智能手表、蓝牙耳机的电源管理模块,提供稳定2.4V基准,用于电压检测、充电控制。
PLC、传感器节点的辅助电源基准,宽温范围适配工业现场温度波动。
智能门锁、环境传感器等电池供电设备,低漏电流延长电池使用寿命。
温度、压力传感器的输出信号调理,稳定基准用于信号放大与校准。
为确保稳定工作,需注意以下要点:
SOT-23封装阴极通常为带标记端,焊接前对照 datasheet 确认,反向安装会导致器件损坏。
工作功耗需满足P=Vzt×Iz≤300mW,建议工作电流控制在5mA~50mA区间。
若电流较大,需在PCB对应引脚增加铜箔面积(1mm²以上)辅助散热,避免结温超过150℃。
2.4V齐纳管温度系数约-2mV/℃,高精度应用需串联/并联温度补偿元件。
焊接与存储需采用防静电措施,避免ESD损坏器件。
该器件凭借小体积、低功耗、宽温特性,成为便携电子、工业控制等领域的高性价比稳压方案。
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