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KUU KCMSH3-40MA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- KUU KCMSH3-40MA
- Type
- KUU
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- KUU
- Electronic Component
- KCMSH3-40MA
- Electronic Component
- 1
- Package
- SMA
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.075g
- Electronic Component
- 1
- Electronic Component
- BM0264548716
- Current
- 3A
- Diode
- Electronic Component
- Current(Ir)
- 500uA@40V
- (Vf)
- 550mV@3A
- Electronic Component
- 55℃~+125℃
- Electronic Component
- Electronic Component
- Electronic Component
- 5000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
KCMSH3-40MA 产品概述
一、概述
KCMSH3-40MA 是 KUU 品牌的一款独立式肖特基整流二极管，采用 SMA 封装，面向需要低正向压降和快速响应的中小功率整流与保护场合。器件在 3A 持续整流电流下具有较低的正向压降，适用于开关电源、DC-DC 模块、充电器及一般电源管理电路中的整流与反向保护应用。
二、主要参数
- 二极管类型：肖特基，独立式（Discrete）
- 封装：SMA
- 型号：KCMSH3-40MA（KUU）
- 正向压降（Vf）：0.55 V @ 3 A
- 额定整流电流：3 A（直流）
- 直流反向耐压（Vr）：40 V
- 反向电流（Ir）：500 μA @ 40 V（室温或指定条件）
- 非重复峰值浪涌电流（Ifsm）：80 A
- 工作结温范围：-55 ℃ ～ +125 ℃
三、产品特点
- 低正向压降：0.55V@3A，导通损耗低，有利于提高效率并降低发热。
- 快速响应、无恢复时间：肖特基结构使开关损耗小，适合高频整流场合。
- 良好的浪涌承受力：80A 峰值浪涌，可承受启动或突发冲击电流。
- 宽温度范围：-55℃ 到 +125℃，适应工业级工作环境。
- 紧凑封装：SMA 有利于自动贴装和紧凑电路板布局。
四、典型应用场景
- 开关电源输出整流、同步降压电路的反并联保护。
- 电池充电器、适配器的整流及极性保护。
- 太阳能逆变、LED 驱动等中低压电源模块。
- 电源环路的浪涌钳位与反向电流保护（需评估反向泄漏）。
五、电气与热管理建议
- 导通损耗示例：在 3A 时，P ≈ Vf × I = 0.55V × 3A ≈ 1.65W。SMA 封装对散热依赖 PCB 铜箔面积，建议在焊盘处增加热铜层并采用适当的过孔散热。
- 反向漏电随温度上升显著增加，若在高温环境或需低漏电的应用，请评估温升下的 Ir。
- 布局要点：缩短电流回路走线、增大焊盘铜面积、在可能的情况下并联多个器件以分摊热量（需注意均流）。
- 浪涌能力高，但仍建议在预计较大浪涌的场合配合限流或浪涌抑制元件使用。
六、封装与可靠性注意
SMA 为标准表面贴装封装，兼容自动贴装与回流焊工艺。焊接条件应符合工业回流温度曲线，避免过高峰值温度或过长保温时间以保持器件可靠性。长期高压反向偏置下，反向泄漏与热耗散需作为可靠性评估项。
七、选型建议
当系统电压低于 40V 且工作电流在 3A 附近，需要兼顾效率和成本时，KCMSH3-40MA 是合适的选择。若系统工作电压或浪涌更高，应选择更高 Vr 或更大 Ifsm 余量的型号；若对反向漏电要求严格，应选择漏电更低或有降温设计的替代件。
欲获样品、数据手册或包装信息（卷带、散装等），建议联系 KUU 授权代理或分销商以获取完整的规格书与可靠性数据。
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