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ST STPS1L40M Schottky Rectifier STPS1L40M
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- ST(STMicroelectronics) STPS1L40M
- Type
- ST
- Unit
- Electronic Component
- Minimum package
- 12000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- ST(STMicroelectronics)
- Electronic Component
- STPS1L40M
- Electronic Component
- 1
- Package
- DO-216AA
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.044g
- Electronic Component
- 1
- Electronic Component
- BM0229271142
- Current
- 1A
- Diode
- 1
- Current(Ir)
- 63uA@40V
- (Vf)
- 460mV@1A
- Electronic Component
- Electronic Component
- Electronic Component
- 12000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
STPS1L40M 产品概述
一、主要特性
STPS1L40M 是意法半导体（ST）推出的一款独立式肖特基二极管，针对低压、高效率电源与开关应用优化设计。器件在 1A 电流条件下正向压降仅约 0.46V（460mV@1A），可有效降低导通损耗并改善整体能效；反向耐压为 40V，非重复峰值浪涌电流 Ifsm 为 50A，可承受短时浪涌冲击。典型反向漏电流为 63µA（@40V），封装为 DO-216AA，适合表面贴装使用。
二、典型电气参数
- 正向压降 Vf：0.46V @ 1A
- 标称整流电流 If：1A（直流）
- 直流反向耐压 Vr：40V
- 反向漏电流 Ir：63µA @ 40V（典型/测试条件见数据手册）
- 非重复峰值浪涌电流 Ifsm：50A（短时脉冲）
以上参数为常用设计参考值，实际使用请以官方数据手册和测试曲线为准。
三、应用场景
- 开关电源输出整流（尤其在低压、低压差场合）
- DC-DC 转换器中的快速续流/箝位二极管
- 反向保护与极性保护电路（电池管理、小型电源模块）
- 电源输入整流与低压降功率路径，适用于通信设备、消费电子、工业控制等领域
四、热特性与使用注意
- 在 1A 工作点下，器件在导通时的功耗约为 Pd ≈ Vf × I ≈ 0.46W，板上铜箔散热与周围器件布局会直接影响结温（Tj）。
- 肖特基二极管的反向漏电流随温度上升明显增加，长期在高温和高反向电压下工作需要注意漏电与热耗散问题。
- Ifsm 为非重复峰值浪涌指标，适用于短时启动/浪涌条件；但在频繁冲击或重复脉冲场合需谨慎，并考虑更高应力等级器件或并联/保护电路。
五、封装与机械信息
STPS1L40M 采用 DO-216AA 封装，属于常见的小型表面贴装二极管封装，便于自动贴装与波峰/回流焊接。设计 PCB 布局时建议增大焊盘铜量以改善散热，并参考厂方推荐的封装尺寸与焊盘图。
六、选型建议与替代方案
- 若应用对正向压降与效率敏感，STPS1L40M 是 1A 级低 Vf 的经济之选；若需要更高电流或更高耐压，应选择对应额定更高的肖特基或同步整流器件。
- 当工作环境温度较高或反向电压持续较高时，应留意漏电流增长并评估结温极限。
- 推荐在最终设计前参照 ST 官方数据手册，查看完整的电气特性曲线、热阻参数和焊接条件；如需替代，可在同类 1A/40V 肖特基产品中比较 Vf、Ir 与浪涌能力以确定最优方案。
总结：STPS1L40M 以低正向压降、适中的反向耐压和良好的浪涌承受能力，适合多种低压整流与保护应用，是面向效率与成本平衡的实用肖特基选型。
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