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DOWO 1N4004
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO 1N4004
- Type
- DOWO
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- 1N4004
- Electronic Component
- 1
- Package
- SMA
- Electronic Component
- General Purpose Diode
- Electronic Component
- 0.122g
- Electronic Component
- 1
- Electronic Component
- BM0257638255
- Current
- 1A
- Diode
- 1
- Current(Ir)
- 1uA
- (Vf)
- 1.1V@1A
- Electronic Component
- 55℃~+175℃
- 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.
1N4004 通用整流二极管（DOWO 东沃，SMA封装）
一、产品简介
1N4004 是一款经典的通用整流二极管，DOWO（东沃）提供SMA贴片封装版本，适用于对空间、成本和可靠性有要求的SMT生产线。该器件面向一般直流整流、保护和开关电源的低频应用，结构简单、性能稳定、易于采购与替换。
二、主要参数
- 二极管数量：1个独立式
- 正向压降：Vf = 1.1V @ IF = 1A（典型值）
- 直流反向耐压：Vr = 400V（可承受最高反向电压）
- 连续整流电流：IF(AV) = 1A
- 非重复峰值浪涌电流：Ifsm = 30A（单次8.3ms半波冲击）
- 封装：SMA（表面贴装，适配SMT工艺）
- 品牌：DOWO（东沃）
三、特性与优势
- 可靠的反向耐压能力（400V），适合交流整流和高压直流链路。
- 1A连续整流等级满足小功率电源、适配器和控制电路常见需求。
- 峰值浪涌30A能承受开机或短时浪涌电流，增强抗冲击能力。
- SMA封装节省PCB面积，适合自动贴装与回流焊工艺，便于量产。
- 设计简单、成本低，兼容多数1N400x家族电路替换与升级。
四、典型应用场景
- 低功率整流桥或单点整流（适配器、电源模块）
- 输入防反接与极性保护电路
- 开关电源中低频整流、续流二极管（注意频率与损耗）
- LED驱动、电机驱动的小功率保护与整流
- 消费电子、家电、小型工业控制设备
五、封装与安装建议
SMA为表面贴装封装，推荐使用标准SMT焊盘与回流焊工艺。焊接时注意：
- 遵循厂商的回流温度曲线以避免热损伤；
- 为维持良好散热性能，适当增大焊盘铜面以帮助散热；
- 当电流接近1A连续工作时，应在PCB设计上提供足够的散热路径和铜箔面积。
六、热与电气注意事项
- 虽为1A等级，连续工作电流与环境温度、PCB散热条件密切相关，必要时做降额设计；
- 正向压降在高电流下会产生较大功耗（Pd ≈ Vf × IF），需计算结温并保证不超过器件额定温度；
- 反向泄漏电流随温度上升显著增加，高温环境应谨慎评估；
- 若电路存在高频反复开关或要求低正向压降，建议考虑肖特基或快恢复二极管替代。
七、订购与数据资料
订购时请确认完整型号与供应商批次，向DOWO/东沃索取最新数据手册以获取详细的电气特性、机械尺寸、回流曲线和可靠性测试数据。实际设计与验证应以厂商数据表为准。
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