Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
Littelfuse SESD0402X1UN-0020-090 SESD0402X1UN
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Littelfuse SESD0402X1UN-0020-090
- Type
- LITTELFUSE
- Minimum package
- 10000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- LITTELFUSE
- Electronic Component
- SESD0402X1UN-0020-090
- Electronic Component
- 1
- Package
- DFN1006-2
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.001g
- Electronic Component
- 1
- Channel Count
- Electronic Component
- Cj- Capacitor
- 0.25pF
- Electronic Component
- BM0229464545
- Operating Temperature
- 55℃~+125℃
- Voltage
- 9.2V
- 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.
SESD0402X1UN-0020-090 产品概述
一、产品简介
SESD0402X1UN-0020-090 是 Littelfuse（美国力特）推出的一款单路单向汽配级 TVS 二极管，封装为 DFN1006-2（常见 0402 大小），通过 AEC‑Q101 认证，专为汽车电子与高可靠性系统的瞬态浪涌和静电放电（ESD）保护而设计。器件在正常工作时对信号影响极小，能在瞬态发生时提供快速钳位保护，保护下游电路元件免受过压损害。
二、关键参数
- 反向工作电压（Vrwm）：7 V（单向）
- 击穿电压（Vbr）：9 V
- 钳位电压（Ipp=2A@8/20µs）：约 9.2 V
- 峰值脉冲电流（Ipp）：2 A @ 8/20 µs
- 反向漏电流（Ir）：约 50 nA
- 结电容（Cj）：0.25 pF（典型，适合高速信号线）
- 工作结温范围（Tj）：-55 ℃ ～ +125 ℃
- 防护等级：符合 IEC 61000‑4‑2（ESD 抗扰度）
- 通道数/极性：单路 / 单向
三、主要特性与优势
- 低结电容（0.25 pF）：对高速数据和通信接口（如 USB、相机链路、CAN/LIN 前端）影响很小，适合要求信号完整性的应用。
- 汽车级可靠性：通过 AEC‑Q101，适合车载电子、传感器和控制单元等高可靠性场合。
- 小尺寸封装：DFN1006‑2 占板面积小，便于空间受限的系统设计。
- 快速响应与有效钳位：在 8/20µs 冲击下能将浪涌电压限制在安全范围，保护后端器件。
四、典型应用场景
- 汽车车载信息娱乐、摄像头、ADAS 前端保护
- 车载传感器与通信接口（如 CAN/LIN、低压数据线）
- 工业控制与通信端口的 ESD/浪涌保护
- 便携式与消费电子的高可靠性接口防护
五、布局与使用建议
- 器件应尽量靠近保护的连接器或外部接口放置，输入端短线连接入器件，阴极（器件负极）接被保护线路，阳极接地（单向器件的常规接法）。
- 提供低阻抗的地回流路径，增加过孔或接地铜箔以提高脉冲能量分散能力。
- 注意其峰值能力为 2 A @ 8/20µs，不能替代用以承载持续故障电流的保护元件；对于较大能量浪涌需并联更高能量器件。
六、封装与可靠性提示
DFN1006‑2（2 引脚）适合标准回流焊工艺，存放与焊接时遵循厂商湿敏等级与回流曲线。器件额定温度范围适合大部分汽车环境，但在极端冲击或长时间高温工况下仍需在系统层面做热与浪涌管理。若需采购或替代件匹配，请参考 Littelfuse 的完整数据手册以获得详细电气特性曲线与基板布局范例。
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