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MDD SMCJ45A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MDD SMCJ45A
- Type
- MDD
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MDD
- Electronic Component
- SMCJ45A
- Electronic Component
- 1
- Package
- SMC
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.357g
- Electronic Component
- 1
- Electronic Component
- BM0264862666
- Operating Temperature
- 65℃~+150℃
- Voltage
- 72.7V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 55.3V
- 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.
SMCJ45A 产品概述
一、产品简介
SMCJ45A 是 MDD 品牌的一款表面贴装瞬态电压抑制器（TVS），专为电路板空间受限、需高可靠性浪涌保护的场合设计。器件采用 SMC（DO-214AB）低外形封装，玻璃钝化结工艺和内置应力消除结构，兼顾耐冲击能力与热稳定性，适合工业级与消费类电子中的瞬态过压防护。
二、主要电气参数
- 反向截止电压 Vrwm：45 V
- 击穿电压 VBR：≈55.3 V（在规定测试电流下）
- 钳位电压 Vcl：72.7 V（峰值脉冲条件下）
- 峰值脉冲电流 Ipp：20.6 A
- 峰值脉冲功率 Ppp：1.5 kW
- 反向漏电流 Ir：≤1 μA
- 工作结温：-65 ℃ ~ +150 ℃
三、关键特性
- 表面贴装设计，优化电路板空间利用率；低轮廓封装便于自动贴装与回流焊工艺。
- 玻璃钝化结与内置应力释放结构，提高热循环与机械冲击下的可靠性。
- 低电感封装，有利于高速信号线的瞬态抑制而不引入显著寄生。
- 出色的钳位能力（钳位电压72.7 V），在大电流冲击时能有效限制电压峰值，保护下游器件。
四、典型应用
- I/O 接口保护（USB、RS-232/485、以太网、GPIO 等）
- AC/DC 电源输入端浪涌吸收与反向瞬态保护
- 工业控制与自动化设备的电源与信号线防护
- 汽车电子（非车规专用型号需核实）与消费电子防雷击、抗静电设计
五、封装与安装
SMC（SMCJ 系列）封装支持常规回流焊装配流程，适配自动贴装设备。推荐在靠近被保护节点处短引线、低阻抗布局以获得最佳抑制效果，同时在高能量场合配合合适熔断与滤波元件使用。
六、可靠性与环境适应性
器件工作温度范围宽（-65 ℃ 到 +150 ℃），适合苛刻环境。低漏电（Ir ≤1 μA）有助于保持静态功耗低，玻璃钝化与内应力释放设计增强长期稳定性。
七、选型与订购建议
在选型时核实所需的单/双向型号及测试条件（钳位值对应的脉冲波形与测试电流），并根据系统最大允许钳位电压选择合适 Vrwm。MDD SMCJ45A 适合需要中高能量瞬态抑制且空间受限的应用场景。若用于汽车或更高能量浪涌场合，请联系供应商确认车规等级或更大功率等级的替代型号。
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