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ST BAV99 diode BAV99
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ST BAV99
- Type
- ST
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ST
- Electronic Component
- BAV99
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- Switch Diode
- Electronic Component
- 0.028g
- Electronic Component
- 1
- Electronic Component
- BM0226493365
- Current
- 215mA
- Diode
- 1
- Current(Ir)
- 1uA@75V
- (Vf)
- 1V@50mA
- Power Dissipation(Pd)
- 350mW
- 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.
BAV99 产品概述
一、产品简介
BAV99 是一款常用的高速开关二极管，采用一对串联结构，适用于高频开关和信号整形场合。该型号由 ST（先科）供应，封装为 SOT-23，体积小、易于表面贴装，适合紧凑型电路板设计。
二、关键电气参数
- 正向压降：Vf ≈ 1V @ 50mA，适合中等电流下的开关应用。
- 反向耐压：Vr = 75V，可用于中等电压的整流与保护场景。
- 反向电流：Ir ≈ 1μA @ 75V，漏电流低，有利于高阻节点的电平保持。
- 非重复峰值浪涌电流：Ifsm = 4.5A，能承受短时浪涌，适用于瞬态冲击。
- 反向恢复时间：Trr = 4ns，高速切换性能良好，适合高频数字与模拟电路。
- 整流电流（平均）：Irect ≈ 215mA，满足小功率整流与信号整流需求。
- 功率耗散：Pd = 350mW，需关注封装热阻与散热条件。
三、封装与热性能
SOT-23 封装体积小巧，适合自动贴装与高密度布局。但受限于热阻，器件在高环境温度或连续大电流工况下需限流或采取散热设计。布局时建议靠近散热铜箔或采用较宽的地/电源铜箔以降低结温。
四、典型应用场景
- 高速开关与脉冲整形电路；
- 信号钳位、限幅与电平转换；
- 低功耗检测与样点保护；
- 小功率整流与反向保护电路。
五、选型与使用建议
选型时需确认工作电流、开关频率与最大反向电压的裕量。若工作在高开关频率或更低正向压降需求，可考虑肖特基二极管；若需更高电流或更强热能力，可并联设备或选用更大封装。布局注意：缩短引线、增加散热铜面、在可能的地方加保护元件以限制浪涌。
六、结论
BAV99（ST/先科，SOT-23）以其高速恢复、低漏电和中等耐压特性，适合多种开关与信号处理场合。合理的热管理与电流/电压裕量设计，能确保其在小型化电路中长期可靠工作。若有具体应用环境或电路参数，可提供进一步的选型与布局建议。
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