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ST BAT54S Schottky diode BAT54S
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ST BAT54S
- Type
- ST
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ST
- Electronic Component
- BAT54S
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.028g
- Electronic Component
- 1
- Electronic Component
- BM0225351911
- Current
- 200mA
- Diode
- 1
- Current(Ir)
- 2uA@25V
- (Vf)
- 800mV@100mA
- 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.
BAT54S 产品概述
一、产品简介
BAT54S 为肖特基势垒二极管系列中的表贴器件，适用于小电流、高速切换与功率受限的整流与保护场合。该器件由先科（ST）品牌以 SOT-23 封装提供，体积小、重量轻，便于自动贴装与高密度 PCB 设计。典型工作结温范围为 -55℃ 至 +150℃，可满足工业级温度要求。
二、主要参数
- 直流反向耐压 (Vr)：30 V
- 正向压降 (Vf)：800 mV @ 100 mA
- 最大整流电流：200 mA（平均）
- 非重复峰值浪涌电流 (Ifsm)：600 mA（单次脉冲）
- 反向电流 (Ir)：2 μA @ 25 V（室温）
这些参数说明 BAT54S 在中低功率整流与保护应用中具有良好的均衡性能。
三、主要特性与优势
- 低正向压降：在低到中等电流下提供较低的压降，减少功耗与功率损耗。
- 快速切换：肖特基结构无显著反向恢复电荷，适合高速开关场合。
- 宽温度范围：-55℃~+150℃ 的工作结温增强了在恶劣环境下的可靠性。
- 小型封装：SOT-23 适合高密度 SMT 布局，利于便携与消费类产品设计。
需要注意的是：肖特基二极管的反向漏电随温度显著上升，在高温下 Ir 会增加，设计中应考虑温升与漏电影响。
四、典型应用场景
- 低压电源整流与续流路径（小功率开关电源、USB 电源前端）
- 反接与极性保护（电池或外部电源接口）
- 信号钳位与保护（接口隔离与 ESD 旁路）
- 混合信号电路中的快速切换二极管
五、PCB 布局与可靠性建议
- 保持焊盘与热沉路径完整，利用短而宽的走线减少寄生电阻。
- 若需散热提升，可在焊盘下方设计过孔或扩大铜箔面积（视 SOT-23 允许）。
- 对于高脉冲或高频场合，关注 Ifsm 与峰值功耗，做好热工裕量与退火工艺控制。
- 在高温环境中，应按厂商温度-漏电特性对 Ir 进行热降额设计。
六、选型与替代建议
选择 BAT54S 时，请以实际工作电流与工作电压为准，若系统对正向压降或反向耐压有更高要求，可考虑额定电流或耐压更高的肖特基型号，或采用肖特基与普通整流搭配的解决方案。最终选型请参照厂商完整数据手册，关注 Vf（随电流）、Ir（随温度）与热阻等关键曲线。
如需进一步资料（封装图、引脚定义、典型特性曲线或 PCB 焊接建议），建议索取并严格按照先科（ST）提供的最新数据表进行验证与设计验证。
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