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LRC SM220AF
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- LRC SM220AF
- Type
- LRC
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- LRC
- Electronic Component
- SM220AF
- Electronic Component
- 1
- Package
- SMA-FL
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.057g
- Electronic Component
- 1
- Electronic Component
- BM0264844020
- Current
- 2A
- Diode
- 1
- Current(Ir)
- 5mA
- (Vf)
- 500mV
- Electronic Component
- 40℃~+150℃
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SM220AF 肖特基二极管 产品概述
一、产品简介
SM220AF 是由 LRC（乐山无线电）推出的一款独立式肖特基整流二极管，采用 SMA-FL 封装，针对低压、高效率整流场景优化。器件正向压降典型值仅为 0.5V，整流电流可达 2A，同时具备良好的浪涌承受能力，适合在空间受限的电源和保护电路中使用。
二、主要性能
- 正向压降 (Vf)：约 500mV（典型），有助于降低整流损耗与发热。
- 直流反向耐压 (Vr)：20V，适配 5V、12V 等低压系统。
- 最大整流电流：2A 连续工作能力，满足中小功率负载需求。
- 反向电流 (Ir)：5mA（在规定条件下），需注意在高温或低电流待机状态下的泄漏影响。
- 非重复峰值浪涌电流 (Ifsm)：60A，可承受短时开机/inrush 或故障浪涌。
三、电气参数详解
SM220AF 的 0.5V 正向压降在相同电流下明显低于普通硅整流二极管，有利于提升转换效率并减少散热设计压力。20V 的反向耐压决定了其不适合高压场合；5mA 的反向漏电在待机功耗敏感应用中需予以评估。若用于较高结温时，漏电随温度上升，会对系统静态功耗产生影响，应结合热设计与环境温度做降额考量。
四、典型应用场景
- 开关电源次级整流、小功率适配器；
- DC-DC 转换器及同步整流替代；
- 反向极性保护、续流/钳位二极管；
- 电池供电设备、便携式电子产品中对效率和体积有要求的应用。
五、封装与热性能
SMA-FL 紧凑封装便于 PCB 布局，适合表面贴装工艺。尽管器件结温工作范围为 -40℃ 至 +150℃，在接近上限温度或高电流工况下需合理安排散热路径（如加大焊盘面积、使用多层铜箔或热孔），并参考厂商提供的热阻及降额曲线进行设计。
六、可靠性与注意事项
SM220AF 适合低压高效整流，但使用时应注意其 20V 反向耐压的限制和 5mA 的漏电特性。建议在选型时结合最大工作电压、环境温度与待机功耗评估是否满足系统要求；浪涌和反复热循环的场景应验证实际可靠性。总体而言，SM220AF 在小型电源与保护电路中能提供良好的性能/成本平衡。
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