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DOWO 1N4002
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO 1N4002
- Type
- DOWO
- Minimum package
- 5000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- 1N4002
- Electronic Component
- 1
- Package
- SMA
- Electronic Component
- General Purpose Diode
- Electronic Component
- 0.123g
- Electronic Component
- 1
- Electronic Component
- BM0228536749
- Current
- 1A
- Diode
- 1
- Current(Ir)
- 1uA@100V
- (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.
1N4002 产品概述
一、产品简介
DOWO（东沃）品牌的 1N4002 是一款通用整流二极管，额定反向耐压100V、额定整流电流1A，常用于电源整流、保护与开关电路中。该型号在 SMA 表面贴装封装中提供，适合自动化贴装与中小功率 PCB 设计。
二、主要电气参数
- 正向压降 (Vf)：约 1.1V @ 1A（典型值），用于评估功耗与热量产生。
- 直流反向耐压 (Vr)：100V，适合较低电压直流/脉动电压环境。
- 整流电流：1A（连续额定），适合小功率整流应用。
- 非重复峰值浪涌电流 (Ifsm)：30A，可承受短时浪涌冲击（单次启动或浪涌事件）。
注：以上为典型或额定参数，具体应用时请参考厂商完整数据表以确认环境与脉冲条件限制。
三、性能特点
- 通用性强：适用于单相整流、极性保护、耦合回路等常见场景。
- 耐浪涌能力：30A 的峰值浪涌能力可吸收短时冲击电流，增强抗瞬态能力。
- 体积小、易贴装：SMA 封装便于高速贴装和紧凑布局，适合现代 PCB 设计。
- 成本效益高：作为通用整流管，性价比高，便于批量采购和替换。
四、典型应用场景
- 开关电源与线性电源的整流输出或验收整流。
- 反向极性保护电路（如电池反接保护）。
- 功率模块的次级整流、续流路径或钳位电路。
- 家电、小家电与工业控制中低功率电路的保护与整流。
五、封装与安装
- 封装：SMA 表面贴装，适用回流焊工艺以提高装配效率。
- 贴装注意：建议按厂商回流温度曲线进行焊接（常见上限约 250–260°C），并严格控制回流时间与升温速率，防止器件应力与内部损伤。
- PCB 布局：靠近热源或大电流回路时应考虑散热与热沉设计，走线尽量短粗以降低压降与热耗散。
六、使用注意与可靠性
- 额定电流与热管理：连续电流 1A，应做功耗估算（P ≈ Vf×I）并留足散热裕度。长期在高温下使用需降额（derating）。
- 反向电压裕量：在脉冲或高频场合，建议留出裕量，避免频繁接近 Vr 极限。
- 浪涌规范：Ifsm 为短时峰值能力，若频繁浪涌或长时间冲击需选用更高规格器件或并联/限流保护。
- 查询数据表：不同批次或厂商有细微差别，最终设计应以 DOWO 提供的详细数据表为准。
七、选型建议
- 若工作电压或浪涌更高，考虑选择 1N4003/4/5 等更高耐压或更大电流规格，或使用快恢复/肖特基二极管以降低正向损耗与反向恢复时间。
- 对于高效率或高频开关电源，优先考虑肖特基二极管以降低 Vf 与开关损耗。
- 在空间受限且需自动化贴装的场合，SMA 封装的 1N4002 为稳妥且成本友好的选择。
如需更详细的热阻、反向漏电、反向恢复时间等参数或 PCB 封装尺寸，请提供要求，我可根据 DOWO 数据表提取并校对具体参数。
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