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SHIKUES B5819W
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- SHIKUES B5819W
- Type
- SHIKUES
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- SHIKUES
- Electronic Component
- B5819W
- Electronic Component
- 1
- Package
- SOD-123
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.039g
- Electronic Component
- 1
- Electronic Component
- BM0230855876
- Current
- 1A
- Diode
- Electronic Component
- Current(Ir)
- 1mA@40V
- (Vf)
- 600mV@1A
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- Voltage Rating(Vr)
- 40V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
B5819W 产品概述
一、产品简介
B5819W 是 SHIKUES（时科）推出的一款独立式肖特基整流二极管，采用 SOD-123 小型表面贴装封装。该器件专为中低功率整流与保护场合设计，具有较低的正向压降和快速响应特性，适合空间受限的电子设备与模块化电源应用。
二、主要电气参数
- 器件类型：肖特基二极管（独立式）
- 型号：B5819W（品牌：SHIKUES / 时科）
- 直流整流电流：1A（连续）
- 正向压降：Vf = 600 mV @ 1A
- 反向耐压：Vr = 40 V
- 反向电流：Ir = 1 mA @ 40 V
- 非重复峰值浪涌电流：Ifsm = 20 A（单次冲击）
- 封装：SOD-123（表贴）
三、关键特性与优势
- 低正向压降：600 mV @ 1A 的典型正向压降可有效降低导通损耗，提高效率，尤其适用于对功耗敏感的整流与功率路径。
- 快速恢复与低反向恢复电荷：肖特基结构本征上具有快速开关特性，适合高频开关电源与二次侧整流。
- 突发浪涌能力：20 A 的非重复峰值浪涌能力可承受启动或瞬态电流冲击，增强系统的鲁棒性。
- 小型封装：SOD-123 体积小、散热路径短，便于高密度 PCB 布局。
四、典型应用场景
- 开关电源二次侧整流与续流保护
- 电池充放电路径的反向保护与肖特基隔离
- DC-DC 转换器输出整流与旁路保护
- 电源输入的反向极性防护与尖峰吸收
- 移动设备、工业控制与消费电子中对体积与效率有要求的电路
五、封装与安装建议
- SOD-123 为小型表贴结构，贴装时请按照标准回流焊工艺处理，注意控制峰值温度和回流曲线以免影响器件可靠性。
- 为降低结温并保证连续 1A 工作，应在 PCB 上提供适当的散热铜箔、热流通道或靠近散热器布置。
- 器件正负极极性明确，布局时正极朝向负载方向，尽量缩短高电流回路长度以减小压降与电磁干扰。
六、可靠性与选型注意事项
- 反向泄漏电流 Ir = 1 mA @ 40 V 在高温时会显著上升，低漏电流要求的应用（如低功耗待机）需注意温度影响或考虑更低漏电型号。
- 连续工作电流应考虑热阻与环境温度，对长期稳定性建议适度降额使用并评估 PCB 散热。
- Ifsm 为非重复冲击能力，不能作为重复循环冲击标准，应避免频繁的大电流冲击。
七、结语
B5819W（SHIKUES）在尺寸、效率与冲击承受力之间提供了良好的平衡，适合用于中低功率整流与保护场合。选型时请结合工作温度、漏电容与系统散热一并评估，以确保在目标应用中获得最佳性能与可靠性。
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