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SR24W_R1_00001 为 PANJIT(强茂)生产的肖特基二极管,采用 SMA(DO-214AC)贴片封装,面向中低压高频整流与保护场合。主要电气参数:正向压降 Vf = 500 mV @ 2 A,直流反向耐压 Vr = 40 V,额定整流电流 2 A,反向漏电流 Ir ≤ 100 µA @ 40 V。器件工作结温范围宽,-55 ℃ 至 +150 ℃,具备非重复峰值浪涌电流 Ifsm = 50 A 的抗冲击能力。
在连续 2 A 工作时,导通损耗约为 P ≈ Vf × I ≈ 1 W。SMA 封装对 PCB 铜箔依赖较大,应采用足够的散热铜面积和热孔(VIA)以降低结温。建议在布局时将器件附近铜箔扩展、增加过孔连接至内层/底层散热平面,并减少导线长度以降低寄生电感。设计时应进行结温计算并考虑额定值的温度降额以保证长期可靠性。
选择本型号时应确认:反向耐压 40 V 能覆盖系统最高反向电压及瞬态;正向压降与漏电流满足功率损耗与待机漏电要求;峰值浪涌能力满足启动或短路情形下的冲击。若系统电压或浪涌要求更高,可考虑更高 Vr 或更大 IFSM 的肖特基或快恢复二极管,但需权衡 Vf 与开关特性。
SMA(DO-214AC)表面贴装,适应自动化贴片与回流焊流程。器件通过温度循环、浪涌与封装应力测试以保证在工业级温度范围内稳定工作。建议在焊接工艺中遵循厂家回流温度曲线以避免封装应力与焊接缺陷。
产品型号:SR24W_R1_00001;品牌:PANJIT(强茂)。常见供货形式为卷带(Tape & Reel)或散装托盘,订购时请确认包装方式与出货批次。使用前核对 PCB 焊盘、丝印极性标记并在样机阶段进行温升与寿命验证,以确保满足终端应用需求。
如需更详细的电气特性曲线、等效电路参数或推荐的 PCB 焊盘布局图,可提供以供进一步设计验证。
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