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DOWO SP1045
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SP1045
- Type
- DOWO
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SP1045
- Electronic Component
- 1
- Package
- TO-277B
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.168g
- Electronic Component
- 1
- Electronic Component
- BM0264215338
- Current
- 10A
- Diode
- 1
- Current(Ir)
- 100uA@45V
- (Vf)
- 550mV
- Electronic Component
- 55℃~+150℃
- 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.
SP1045 产品概述
一、产品简介
SP1045 是东沃（DOWO）推出的一款高可靠性肖特基整流二极管，单只独立封装（TO-277B）。该器件以低正向压降、较小反向漏电和较高整流电流能力为特点，适用于开关电源整流、DC-DC 变换、整流桥单元及各种高效率电源管理场景。
二、主要电气参数
- 二极管配置：1 个独立式
- 正向压降（Vf）：550 mV（典型值，在高电流工作下明显降低功耗）
- 直流反向耐压（Vr）：45 V
- 额定整流电流（Io）：10 A
- 反向电流（Ir）：100 μA @ 45 V
- 非重复峰值浪涌电流（Ifsm）：180 A
- 工作结温范围：-55 ℃ ~ +150 ℃
- 品牌 / 型号：DOWO（东沃） / SP1045
- 封装：TO-277B
三、性能亮点
- 低正向压降（≈0.55 V）降低导通损耗，提升转换效率，尤其在大电流整流时效果明显。
- 45 V 的反向耐压覆盖常见的中低压电源轨，适配多种电源拓扑。
- 100 μA 的反向漏电在高温或高压时仍保持较低水平，有利于待机功耗控制和热管理。
- 180 A 的浪涌能力确保在启动、输出短路或瞬态冲击时具有足够的承受能力。
四、典型应用场景
- 开关电源（SMPS）输出整流
- DC-DC 降压模块、同步整流替代方案
- 充电器与适配器的整流与保护电路
- 电机驱动回生整流、缓冲电路
- 汽车电子（在45 V 以内的电源域）与工业电源系统
五、封装与热管理建议
TO-277B 封装利于散热片或导热垫的安装，建议：
- 在 PCB 设计中为二极管预留足够散热铜箔和过孔，降低结到壳与结到环境的热阻。
- 在接近额定电流（10 A）连续工作时，进行适当降额处理并评估结温，确保工作结温不超过 150 ℃。
- 对于频繁冲击或高浪涌环境，考虑增加浪涌保护器件或使用冗余并联设计（注意电流均流措施）。
六、使用与焊接注意事项
- 焊接时遵循封装的最高温度与时间限制，避免长时间高温暴露导致封装或终端损伤。
- 推荐使用合适的焊膏与回流曲线，焊后进行目视或 X-ray 检查以确保焊点可靠。
- 储存时防潮防尘，按照厂家建议的保管条件保存，避免长时间受潮影响焊接性能。
七、选型与替换建议
在替换或并联使用时，确认正向压降、反向耐压、漏电与浪涌能力匹配或优于原器件；并注意热阻与封装兼容性。对于对效率要求更高的系统，可考虑并联多只以降低等效 Vf，但需做好电流均流与热设计。
总结：SP1045（DOWO，TO-277B）以其低 Vf、10 A 的整流能力及良好的浪涌承受力，是中低压高效整流和电源设计中的稳妥选择。若需更详细的典型特性曲线或封装尺寸，请参考厂家数据手册或联系供应商获取原始资料。
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