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Littelfuse PESD0402-240 PESD0402
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Littelfuse PESD0402-240
- Type
- 0402
- Minimum package
- 10000
Technical parameters
- Electronic Component
- LITTELFUSE
- Electronic Component
- PESD0402-240
- Electronic Component
- 1
- Package
- 0402
- Electronic Component
- Electronic Component
- Type
- ESD
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.014g
- Electronic Component
- 1
- Cj- Capacitor
- 0.25pF
- Electronic Component
- BM0231032844
- Operating Temperature
- 55℃~+125℃
- Voltage
- 40V
- Electronic Component
- IEC 61000-4-2
- Current(Ir)
- 10uA
- Electronic Component
- 10000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
PESD0402-240 产品概述
一、概述
PESD0402-240 为 Littelfuse（美国力特）推出的汽车级聚合物 ESD 抑制器，封装为 0402（毫米制小封装），属于双向（bidirectional）保护器件。器件工作耐压 Vrwm 为 24V，典型钳位电压约 40V，反向漏电流 Ir 为 10μA，结电容 Cj 极低为 0.25pF。工作温度范围为 -55℃ 至 +125℃，并符合 IEC 61000-4-2 ESD 防护要求，适用于对信号完整性和空间受限要求较高的汽车及工业应用。
二、主要特点
- 双向保护：支持正负极性瞬态浪涌，适合差分或可反向冲击的信号线。
- 低漏电流：Ir = 10μA，可用于电源与高阻抗传感器电路或低功耗系统，避免影响偏置与测量精度。
- 超低电容：Cj = 0.25pF，对高速数据线（如高速串行、射频前端、传感器接口）引入的串扰和带宽损耗极小。
- 小尺寸：0402 封装利于高密度 PCB 布局，贴近受保护端口（连接器/芯片引脚）布置，提升保护效率。
- 宽温工作：-55℃~+125℃ 满足汽车等级温度要求，可靠性高。
- 符合 IEC 61000-4-2：通过工业/汽车级 ESD 抗扰度测试，能有效防护人为接触或金属接触产生的静电放电。
三、典型应用场景
- 汽车信息娱乐系统（USB、A/V 接口）、车载传感器与摄像头接口
- ADAS/雷达与激光传感器前端信号保护
- 通信总线（CAN/LIN）与差分信号线保护
- 手持终端、可穿戴设备或工业控制器的 I/O 端口和高频信号线
四、设计与使用建议
- 器件应尽量靠近受保护端口或连接器放置，走线长度越短越好，以降低感抗和提高钳位效率。
- 对于高速差分线，建议对称使用双个器件布局或选择专为差分对设计的保护方案，以保证阻抗连续性。
- 注意焊接工艺与回流曲线，0402 封装对贴片与焊接工艺敏感，应遵循厂家推荐的温度曲线与湿敏等级要求。
- 在对可靠性或车规认证有严格要求时，建议确认器件是否具有 AEC 等相关质量认证或向厂商索取可靠性测试报告。
五、结论
PESD0402-240 以其极低结电容、低漏电和小尺寸特点，特别适合需要兼顾高速信号完整性与空间受限的汽车与工业应用。作为 Littelfuse Polymer ESD 系列的一员，它在 ESD 抗扰度和温度耐受性上表现优异，是用于端口和信号线静电保护的理想选择。购买或设计采用前，建议参考官方规格书获取完整电气参数及焊接/可靠性信息。
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