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KUU B340A
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- KUU B340A
- Type
- KUU
- Minimum package
- 2000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- KUU
- Electronic Component
- B340A
- Electronic Component
- 1
- Package
- SMA
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.11g
- Electronic Component
- 1
- Electronic Component
- BM0257646975
- Current
- 3A
- Diode
- Electronic Component
- Current(Ir)
- 500uA@40V
- (Vf)
- 550mV@3A
- Electronic Component
- 65℃~+125℃
- Electronic Component
- Electronic Component
- Electronic Component
- 2000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
B340A 产品概述
一、产品概述
KUU B340A 为独立式肖特基屏蔽二极管，封装为 SMA（表面贴装），适用于中小功率整流与保护场合。器件在 3A 直流整流电流下具有较低的正向压降（Vf = 550 mV @ 3A），并提供 40V 的直流反向耐压（Vr），适用于 12V~24V 电源系统中的低损耗整流与极性/反接保护。
二、主要电气参数
- 正向压降：典型 Vf = 550 mV @ IF = 3 A（测试条件标注）
- 直流反向耐压：Vr = 40 V
- 正向整流电流：IF = 3 A（连续）
- 反向漏电流：Ir = 500 μA @ VR = 40 V（常温）
- 非重复峰值浪涌电流：Ifsm = 100 A（单次浪涌能承受较高瞬态电流）
- 工作结温范围：-65 ℃ ~ +125 ℃
注：肖特基结构决定反向漏电随温度上升显著增加，设计时需考虑环境温度与热散逸条件。
三、典型特性与优势
- 低正向压降：在高电流工况下降低功耗与发热，提升整流效率。
- 快速响应：肖特基二极管几乎无反向恢复时间，适合开关电源、快速开关和高频整流。
- 良好浪涌能力：100 A 的单次浪涌能力对启动浪涌或短时过载有缓冲能力。
- SMA 封装：适合表面贴装生产，便于自动化贴装和回流焊工艺。
四、典型应用场景
- 开关电源（整流/回路输出整流）
- DC-DC 转换器的输出整流和同步整流替代件
- 逆极性保护与电源输入保护（汽车电子、工业电源）
- 电池充放电路径与太阳能系统的小电流整流
- 快速开关的免费轮回二极管（flyback/boost）
五、PCB 布局与散热建议
- 虽为 SMA 小封装，但在 3A 连续工况下需保证良好散热：在焊盘下和周边布置较大铜箔（散热电源平面），并增加过孔与散热层连通。
- 回流焊温度遵循通用无铅回流曲线，避免过长高温暴露以保护器件。
- 在有高反向电压和高温环境下应考虑反向漏电增大，必要时选择并联或替代更高 Vr / 更低 Ir 的型号。
六、可靠性与使用注意
- 反向漏电随结温上升显著增加，长期在高温高压反向偏置下可能导致能耗与热失控，应在设计阶段做热仿真与电流降额。
- 浪涌能力为单次峰值，频繁的冲击或长时间超额浪涌会削弱器件寿命。
- 安装时注意极性标识（SMA 封装通常在器件一端有阴极标识），避免反向安装。
七、订购信息与替代
- 品牌：KUU
- 型号：B340A
- 封装：SMA（独立式）
下单或替换时建议确认 Vf、Ir、Ifsm、工作温度范围等与实际应用一致。对于更高温度或更低漏电要求，可选择更高 Vr 或低 Ir 的肖特基或普通整流二极管替代器件。
总结：KUU B340A 在中低压、3A 等级场合表现出低压降、快速响应和良好浪涌能力，适合常见电源整流与保护用途，但需重视反向漏电与热管理。
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