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FOSAN 1N4148WT
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- FOSAN 1N4148WT
- Type
- FOSAN
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- FOSAN
- Electronic Component
- 1N4148WT
- Electronic Component
- 1
- Package
- SOD-523
- Electronic Component
- Switch Diode
- Electronic Component
- 0.022g
- Electronic Component
- 1
- Electronic Component
- BM0228561515
- Current
- 125mA
- Diode
- 1
- Current(Ir)
- 1uA@75V
- (Vf)
- 1.25V@150mA
- Power Dissipation(Pd)
- 150mW
- Electronic Component
- 50℃~+150℃
- 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.
1N4148WT 产品概述
一、产品简介
1N4148WT 是一款由 FOSAN（富信）生产的高速开关二极管，额定反向耐压 75V，整流电流 125mA，采用超小型 SOD-523 封装。该器件定位为信号级、高速切换与保护用途，适合在空间受限的表贴电路中替代传统 1N4148。
二、主要电气参数
- 正向压降 Vf：1.25V @ 150mA
- 直流反向耐压 Vr：75V
- 最大整流电流 If(av)：125mA
- 峰值浪涌电流 Ifsm（非重复）：2A
- 反向电流 Ir：1μA @ 75V
- 反向恢复时间 Trr：4ns
- 功耗 Pd：150mW
- 工作结温范围：-50℃ ~ +150℃
- 封装：SOD-523（表贴）
三、主要特性与优势
- 高频开关性能优越：Trr≈4ns，适用于几十 MHz 甚至更高频率的切换场合。
- 低漏电流：在 75V 时反向电流仅 1μA，适合高阻抗、低电流信号路径。
- 小体积高密度：SOD-523 小封装节省 PCB 面积，适合便携和 SMT 密度较高的设计。
- 容错能力：2A 峰值浪涌能力可应对短时脉冲冲击。
四、典型应用
- 高频脉冲与数字逻辑开关电路
- 信号整流、钳位与电平转换
- 输入保护、浪涌抑制与反向保护
- 通信设备、仪表和便携式电子产品中的小信号处理
五、封装与使用建议
- SOD-523 为极小封装，焊接推荐采用标准回流焊工艺；严格按照厂家回流曲线，避免过高峰值温度与长时间高温暴露。
- 布局时保证两端焊盘良好接触并适当考虑散热路径，必要时在周边加入铜箔以利热量扩散。
- 设计时建议进行降额（derating），在长期连续工作或高温环境下适当降低电流和功耗以提高可靠性。
- 垂直标识：注意管脚极性（阴极通常有表面标记条），安装时确认方向。
六、可靠性与注意事项
- 在高频或开关速度很高的场合，反向恢复电流可能引起电磁干扰或额外损耗，应在电路中考虑保护或缓冲元件。
- 极限参数（如 Ifsm、Pd）为瞬态或短时条件，长期工作应以额定值和热稳态为准。
- 出货前建议参照 FOSAN 的完整数据手册和封装图检查焊盘尺寸与力学要求。
综上，1N4148WT 以其高速响应、低漏电与超小体积，在现代高密度、低功耗电子系统中是一款实用且性价比高的小信号开关二极管。若需更详细的热阻、回流曲线或封装尺寸，请参阅厂商数据手册或联系供应商获取原始资料。
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