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DOWO 1N4002W
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO 1N4002W
- Type
- DOWO
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- 1N4002W
- Electronic Component
- 1
- Package
- SOD-123FL
- Electronic Component
- General Purpose Diode
- Electronic Component
- 0.02g
- Electronic Component
- 1
- Electronic Component
- BM0264342816
- Current
- 1A
- Diode
- 1
- Current(Ir)
- 1uA@100V
- (Vf)
- 1.1V@1A
- Electronic Component
- 55℃~+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.
1N4002W 产品概述
一、产品简介
1N4002W 是一款通用整流二极管，东沃（DOWO）出品，封装为低矮表贴型 SOD-123FL。器件为单只独立二极管，适用于各种低压到中压的整流与保护场合，兼顾体积小、可靠性高与贴片工艺的装配便利性。
二、主要参数
- 正向压降 (Vf)：1.1 V @ IF = 1 A
- 直流反向耐压 (Vr)：100 V
- 额定整流电流 (IF)：1 A（直流）
- 反向漏电流 (IR)：1 µA @ 100 V
- 非重复峰值冲击电流 (IFSM)：30 A
- 工作结温范围：-55 ℃ ~ +150 ℃
- 封装：SOD-123FL，品牌：DOWO（东沃）
三、性能特点
- 100V/1A 的电气等级满足常见的整流与保护需求，100V 的反向耐压对多数工业与家用电源足够。
- Vf 在 1 A 时约 1.1 V，表明在中等电流下有一定的压降和功耗，需要考虑热量。
- 低至微安级的反向漏电流在高压时也能保证较小的静态损耗，适合对静态功耗敏感的应用。
- 峰值冲击电流 30A，支持短时浪涌（如整流器开机浪涌或突发负载）能力良好。
- SOD-123FL 表贴封装体积小、厚度低，利于高密度 PCB 布局和自动化贴装。
四、典型应用场景
- 交流到直流的整流电路（小功率电源、适配器、充电器二次侧）
- 反向极性保护、续流二极管（继电器、直流电机驱动）
- 开关电源的输出整流与续流（在非高频快速恢复要求下）
- 各类消费电子和工业控制电路中做过压/反向保护用
五、使用建议与注意事项
- 功率耗散考虑：在 1 A 正向电流下，二极管的耗散约为 Vf × IF ≈ 1.1 W，需在 PCB 布局时提供适当散热（增加铜面积或靠近散热结构），否则长时间满载会提升结温并影响可靠性。
- 频率与恢复特性：此类通用整流二极管恢复速度一般，不适合高频硬开关环境或对反向恢复时间要求严格的应用，若需高频性能应选择快恢复或肖特基二极管。
- 工艺兼容：SOD-123FL 为常规贴片封装，兼容回流焊工艺；焊接时按元件厂商的回流温度曲线与湿热处理要求操作。
- 电压裕量：尽量在工作电压与耐压之间保留裕量，避免长期在接近 Vr 的反向电压下工作以降低漏电与失效风险。
六、与传统 1N4002 的对比
与传统直插式 1N4002 相比，1N4002W 的 SMD 封装更适合表贴工艺和高密度板设计，但功耗散热能力相对有限；电气参数（100V/1A）与经典型号一致，功能定位相同，选型时可根据装配方式和散热条件决定。
总结：1N4002W（DOWO，SOD-123FL）是一款性价比高的通用整流二极管，适用于中等电流和中等电压的整流与保护场合。在设计时注意散热与适用频率，可在多数消费和工业电子产品中放心使用。
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