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LGE 1N4148WT
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- LGE 1N4148WT
- Type
- LGE
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- LGE
- Electronic Component
- 1N4148WT
- Electronic Component
- 1
- Package
- SOD-523
- Electronic Component
- Switch Diode
- Electronic Component
- 0.022g
- Electronic Component
- 1
- Electronic Component
- BM0257672028
- Current
- 125mA
- Diode
- Electronic Component
- Current(Ir)
- 1uA@75V
- (Vf)
- 1.25V@150mA
- Power Dissipation(Pd)
- 150mW
- 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.
1N4148WT 产品概述
一、产品概述
1N4148WT 是鲁光（LGE）推出的小信号快速切换二极管，采用 SOD-523 超小封装，属于独立式开关二极管。该器件专为高密度贴片电路设计，在占板面积极小的同时兼顾较高的开关速度和良好的耐压性能，适合现代便携式和消费电子中的高速信号处理与保护电路。
二、主要参数
- 二极管配置：独立式（单只封装）
- 正向压降：Vf = 1.25 V @ If = 150 mA
- 最大反向耐压：Vr = 80 V
- 整流电流（平均）：I_F(AV) = 125 mA
- 功耗耗散：Pd = 150 mW
- 反向电流：Ir = 1 μA @ Vr = 75 V
- 反向恢复时间：Trr = 4 ns
- 封装：SOD-523（超小型贴片封装）
以上参数为典型/额定值，设计时应考虑热与电应力的留余裕。
三、产品特性与优点
- 小体积：SOD-523 封装极大节省 PCB 空间，适用于高密度布板。
- 高速开关：Trr = 4 ns，适合脉冲、逻辑级开关与高速信号整形。
- 良好耐压性能：80 V 反向耐压满足多数中低压开关与保护场景。
- 低反向漏流：1 μA @75 V 在高阻抗信号路径中减少误差与功耗。
- 可承受较大瞬态电流：150 mA 正向测试点表明在短时脉冲下有良好表现。
四、典型应用
- 高频和高速逻辑电路的开关与级间隔离。
- 脉冲整形、信号钳位和电平恢复。
- 输入保护、反向极性保护与浪涌抑制的辅佐元件。
- 便携设备、移动终端、通信模块与传感器前端的小信号路径。
五、封装与安装要点
SOD-523 为超小尺寸贴片封装，焊接时需注意焊盘设计与回流工艺控制，避免过热导致封装损伤或引线翘曲。由于器件功耗 Pd = 150 mW 较低，连续高电流或高占空比工作时需保证良好散热环境与合理电流余量。
六、使用注意事项
- 长时间工作电流应低于额定整流电流并考虑热阻和环境温度的影响。
- 在高电压或高频应用中，应关注反向恢复特性对系统波形的影响，必要时配合阻尼或缓冲电路。
- 焊接与存储按 SMD 元件规范执行，避免潮湿导致焊接缺陷或器件降级。
- 在严格低漏电要求的设计中，建议在目标条件下验证 Ir 值与温漂特性。
七、质量与可靠性
鲁光（LGE）系列产品经过工业级生产与测试流程，适配批量化 SMT 生产线。为保证长期可靠性，推荐在设计阶段加入适当的电气与热裕量，进行必要的温升与寿命测试，以符合最终应用的可靠性要求。
总结：1N4148WT 以其超小封装、快速恢复和合理的电气特性，适合空间受限且需高速切换的小信号应用。设计时关注热管理与工作余量，可在多种消费与通信类电子产品中发挥良好作用。
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