Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
MSKSEMI PESD0402MS03-MS PESD0402MS03
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MSKSEMI PESD0402MS03-MS
- Type
- MSKSEMI
- Minimum package
- 10000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MSKSEMI
- Electronic Component
- PESD0402MS03-MS
- Electronic Component
- 1
- Package
- 0402
- Electronic Component
- Electronic Component
- Type
- ESD
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.007g
- Electronic Component
- 1
- Channel Count
- Electronic Component
- Cj- Capacitor
- 0.05pF
- Electronic Component
- BM0225936501
- Operating Temperature
- 55℃~+125℃
- Voltage
- 40V
- Electronic Component
- IEC 61000-4-2
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
PESD0402MS03-MS 产品概述
一、产品简介
PESD0402MS03-MS 是 MSKSEMI（美森科）推出的一款单通道双向 ESD 防护二极管，采用 0402 超小封装，专为对抗静电放电（ESD）对敏感高速信号线的冲击而设计。器件工作温度范围宽（-55℃ ~ +125℃），适合工业级和消费类产品长期可靠应用。
二、主要参数与特点
- 钳位电压（Vclamp）：典型 40 V（随测试条件变化），能在瞬态事件中有效限制过冲幅度。
- 工作电压（Vrwm）：3.3 V 反向耐压，适用于 3.3V/低电压信号线保护。
- 极性：双向，支持信号正负摆幅的对称保护，无需额外偏置元件。
- 反向电流（Ir）：典型 10 nA，静态漏电小，不影响高阻抗电路。
- 结电容（Cj）：极低 0.05 pF，适合高频、高速数据链路（如 USB/HDMI/RF/差分线）应用，最大限度降低信号失真。
- 通道数：单路；封装：0402；温度范围：-55℃ ~ +125℃。
- 符合 IEC 61000-4-2 静电放电测试规范，提供可靠的接触与空气放电防护。
三、典型应用场景
- 3.3 V 或更低电压的 I/O 端口、串行差分线路保护（如 I2C/TTL/USART）
- 高频/高速接口（USB、HDMI、LVDS、SATA 等）对低电容保护需求的场合
- 天线或射频前端微保护（需结合系统选型确认）
- 工业控制、车载电子、移动终端与便携设备的端口防护
四、封装与 PCB 布局建议
- 将器件尽可能靠近保护目标（接口引脚）放置，缩短走线，减小回路电感。
- 器件一端连接信号线，另一端接地，双向器件在正负瞬态均将能量导入地；地端应通过短、粗的过孔连接至底层接地平面。
- 在高速差分对应用中，可在两条信号线上各并一个器件（或采用差分型保护方案），注意保持差分对阻抗一致性，避免引入额外寄生。
- 0402 为极小封装，焊盘设计与回流工艺需严格按照厂商推荐的焊盘尺寸与温度曲线执行，避免焊接缺陷。
五、可靠性与使用注意事项
- 在选型时建议参考完整数据手册中的最大冲击能量、钳位曲线与测试条件，以确认在目标系统中的实际保护能力。
- 对于常见高能量脉冲（如雷击耦合），单颗 ESD 器件可能不足以完全保护系统，需与滤波、电阻限流或多级保护结合使用。
- 储存与焊接过程中注意防潮包装与遵循回流温度规范，避免热应力或机械损伤。
六、订购信息与替代建议
- 品牌：MSKSEMI（美森科）；型号：PESD0402MS03-MS；封装：0402；单通道、双向。
- 订购前建议索取数据手册以确认所有电气参数及典型波形。
- 替代选择应满足：Vrwm≈3.3V、非常低的结电容（≤0.1 pF）、双向结构与相近钳位特性，用以保持性能等效。
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