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ST BAT54A Schottky diode BAT54A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ST BAT54A
- Type
- ST
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ST
- Electronic Component
- BAT54A
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- Schottky Diode
- Electronic Component
- 0g
- Electronic Component
- 1
- Electronic Component
- BM0232256321
- Current
- 300mA
- Current(Ir)
- 2uA@25V
- Electronic Component
- 55℃~+150℃
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- Voltage Rating(Vr)
- 30V
- Surge Current (Ifsm)
- 600mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BAT54A 肖特基二极管（SOT-23）产品概述
一、产品简介
BAT54A 为低正向压降的肖特基（二极管）器件，适用于高开关频率和低电压降场合。该器件常见于表面贴装 SOT-23 封装，由于肖特基势垒特性，在小信号整流、保护与快速切换应用中表现优异。本概述基于提供的典型参数给出器件特性、应用与使用建议。
二、主要电气参数
- 直流反向耐压 (Vr)：30 V
- 最大整流电流（IF）：300 mA（连续）
- 峰值非重复浪涌电流（Ifsm）：600 mA
- 反向电流（Ir）：2 μA @ 25 V
- 工作结温范围：-55 ℃ ~ +150 ℃
- 典型正向电压参考：约 1.0 V @ 100 mA（注：正向压降随电流与温度变化）
以上参数可作为电路设计时的基础极限与参考值，实际电气特性应结合具体器件数据手册中的典型曲线和条件确认。
三、主要特点与优势
- 低正向压降：在小电流条件下压降低，有助于提高整流效率、降低功耗。
- 快速切换速度：肖特基结构无少量电荷存储，开关响应快，适合高频整流与钳位。
- 低反向漏电：在室温下反向电流较小（2 μA @ 25 V），在中低电压电源保护时具有良好表现。
- 宽温度范围：-55 ℃ 至 +150 ℃ 的结温支持工业环境与较高工作温度的可靠性要求。
- 小尺寸封装（SOT-23）：节省PCB面积，适合便携式和密集布板设计。
四、典型应用场景
- 电源整流与二次侧整流（低功率）
- 反向电压保护、续流与钳位电路
- 快速开关与混合信号隔离电路中的保护元件
- 便携式设备、通信模块与传感器供电路径的低压降整流
五、设计与使用注意事项
- 漏电依温度上升显著增加，应在高温环境下评估反向漏电对系统待机功耗的影响。
- 1.0 V@100 mA 为参考正向压降，设计时应参考器件数据手册的 Vf–If 曲线以避免过热或功耗异常。
- 若预期脉冲浪涌电流接近 Ifsm，应考虑并联或使用更高浪涌能力器件，并保证瞬态热阻允许短时脉冲。
- SOT-23 封装热阻与 PCB 散热布局相关，功耗较大时需优化铜箔面积与散热路径以防结温超限。
- 在存在较大反向电压或高温的应用中，需对反向击穿裕量进行评估，避免长期靠近 Vr 极限工作。
六、选型建议
在选型时，结合实际工作电流、最大反向电压、允许的浪涌脉冲以及工作温度范围。若系统对正向压降非常敏感，可比较同类肖特基器件的 Vf 曲线；若需更高整流电流或更强浪涌能力，应选用更大封装或额定电流更高的型号。最终选型以完整数据手册与实际样片验证为准。
若需我进一步提供热阻计算示例、典型应用电路或与同类型号对比表，请告知具体应用场景和设计要求。
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