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FOSAN MMBD4148CC
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- FOSAN MMBD4148CC
- Type
- FOSAN
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- FOSAN
- Electronic Component
- MMBD4148CC
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- Switch Diode
- Electronic Component
- 0.034g
- Electronic Component
- 1
- Electronic Component
- BM0264886298
- Current
- 200mA
- Diode
- 1
- Current(Ir)
- 5uA@75V
- (Vf)
- 1.25V@150mA
- Power Dissipation(Pd)
- 225mW
- Electronic Component
- 55℃~+150℃@(Tj)
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MMBD4148CC 产品概述
一、产品简介
MMBD4148CC 是富信（FOSAN）推出的一款小信号开关二极管，1 对共阴极（Common Cathode）配置，采用 SOT-23 封装。器件针对高速开关和小信号整流场景优化，具备较低的反向漏电流和快速的恢复特性，适用于便携式电子、通信及混合信号电路中的保护与整流应用。
二、主要电气参数
- 直流反向耐压（Vr）：100 V
- 正向压降（Vf）：1.25 V @ 150 mA
- 整流电流：200 mA（持续）
- 耗散功率（Pd）：225 mW
- 反向电流（Ir）：5 μA @ 75 V
- 反向恢复时间（Trr）：4 ns
- 工作结温范围（Tj）：-55 ℃ ~ +150 ℃
以上参数反映出 MMBD4148CC 在高压耐受与开关速度之间的均衡，使其在高阻抗或需要快速恢复的小信号路径上表现良好。
三、功能特性与优势
- 1 对共阴极结构便于在双通道比较、限幅和多路开关中实现简洁电路连接；
- 100 V 的反向耐压扩展了使用电压范围，适合更高电压的接口电路；
- 4 ns 的快速反向恢复时间保证开关过程中的低开关损耗与低串扰；
- 低反向漏电（5 μA @ 75 V）提高静态性能，适合高阻输入或采样电路；
- SOT-23 小体积封装利于表贴自动化生产和空间受限的系统设计。
四、典型应用场景
- 高速数字电路的开关与波形整形；
- 信号限幅、钳位和保护（输入保护二极管）；
- 小功率电源与反向保护；
- 通信设备的射频/中频前端保护（非功率放大）；
- 逻辑电平移位与采样保持电路的快速恢复整流。
五、封装与可靠性注意事项
器件采用 SOT-23 表面贴装封装，便于回流焊加工。设计时应注意：
- 根据 PCB 布局预留合理散热铜箔，尽量增大焊盘附近的铜面以降低结温；
- 避免在高频或高应力环境下超过 Pd 与 If 限值，以免热失效；
- 在高压应用中考虑击穿裕量与反向漏电对系统功耗的影响。
六、选型建议与替代器件
当系统需要 100 V 耐压、快速恢复且保持小封装时，MMBD4148CC 为优选。若应用侧重更低正向压降或更大持续电流，可考虑尺寸更大或专用整流器件；若需要更快恢复时间或更低漏电，可参考同类高速开关二极管族的其他型号进行对比（注意匹配封装与结温规格）。
如需进一步的封装图、引脚定义、电气特性图或可靠性数据，可提供具体应用电路以便给出更详细的布局与热设计建议。
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