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ST BAT54C Schottky diode BAT54C
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ST BAT54C
- Type
- ST
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ST
- Electronic Component
- BAT54C
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- Schottky Diode
- Electronic Component
- 0.026g
- Electronic Component
- 1
- Electronic Component
- BM0232256318
- 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.
BAT54C 产品概述
一、产品简介
BAT54C 为双肖特基二极管（共阴极）器件，封装为 SOT-23，品牌：ST（先科）。器件由一对共阴极肖特基二极管组成，两路阴极共用，适合在同一封装内实现两个独立的整流/保护路径。主要电气参数：正向压降 Vf ≈ 800 mV @100 mA，直流反向耐压 Vr = 30 V，整流电流 Io = 200 mA，反向漏电流 Ir = 2 μA @25 V，非重复峰值浪涌电流 Ifsm = 600 mA，结温工作范围 -55 ℃ ~ +150 ℃。
二、主要特性
- 共阴极双肖特基结构，节省 PCB 面积并方便桥接/二进制选择电路设计。
- 低正向压降与快速响应，适用于高频开关及快速保护场合（给定测试条件下 Vf ≈ 800 mV @100 mA）。
- 30 V 反向耐压，能满足较高电压的整流与防反接需求。
- 低漏电流（2 μA @25 V），适合对静态功耗敏感的便携与电池供电设备。
- 宽温度范围（-55℃~+150℃），适应工业级与车用边界条件（需参考具体应用的热设计）。
三、典型应用
- 电源整流与肖特基整流保护（低压快恢复场合）。
- 反向极性保护与电源 OR-ing（多电源自动切换）。
- ESD/瞬态钳位与输入保护（配合阻抗匹配与滤波元件）。
- 电平移位、快速开关回路的钳位二极管。
- 便携式设备、通信设备与消费电子中对体积与响应时间有要求的场合。
四、使用要点与热管理建议
- 连续整流电流不宜超过 200 mA，长时间高电流时需考虑结温上升与 PCB 散热。
- 浪涌电流 Ifsm = 600 mA 为非重复峰值，适用于瞬态冲击（上电浪涌或短时电流），但不能作为常态工作值。
- 在高反向电压及高温下，漏电流会增加，长期工作时建议适当降额设计并预留热阻路径（加大铜箔、缩短热阻）。
- SOT-23 封装体积小，焊盘设计与回流工艺应符合制造商推荐，避免热应力及焊接缺陷。
五、选型与替代
在需要相同封装与参数时，BAT54C 可由多个厂商提供，ST（先科）品牌版本在可靠性与一致性上具有优势。选型时注意正向压降与漏电在不同测试电流/温度下的曲线差异，如需更低 Vf 或更高电流能力，可考虑更大封装或其它型号肖特基替代。
六、结论
BAT54C（SOT-23，1 对共阴极）是一种体积小、响应快、适用面广的肖特基二极管方案，适合用于整流、保护与快速钳位电路。在实际应用中应关注热管理与电流降额，合理布线与焊接工艺可确保长期稳定运行。
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