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DOWO MVR1206-240G MVR1206
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO MVR1206-240G
- Type
- DOWO
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- MVR1206-240G
- Electronic Component
- 1
- Package
- 1206
- Electronic Component
- Varistor Resistor
- Electronic Component
- 1J
- Electronic Component
- 0.051g
- Electronic Component
- 1
- Varistor Voltage
- 24V
- Electronic Component
- BM0264548661
- Voltage
- 38V
- Static Capacitor
- 850pF@1MHz
- Operating Voltage(AC)
- 14V
- Operating Voltage(DC)
- 18V
- Surge Current
- 100A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MVR1206-240G 产品概述
一、主要参数与型号说明
MVR1206-240G 是 DOWO（东沃）推出的一款片式压敏电阻（SMD Varistor），封装为 1206，面向印刷电路板上的浪涌与瞬态过压保护。关键电气参数如下：
- 压敏电压（Vn）：24 V
- 钳位电压（Vc）：38 V
- 工作电压（DC）：18 V
- 工作电压（AC）：14 V
- 峰值浪涌电流（Ipp）：100 A
- 能量吸收能力：1 J
- 静态电容：850 pF @ 1 MHz
型号 MVR1206-240G 中的 “240” 对应压敏电压等级，1206 代表常见的 SMD 尺寸，适合表面贴装生产工艺。
二、核心性能特点
- 高能量密度：在 1206 小尺寸下实现 1 J 的能量吸收，适合局部浪涌抑制需求。
- 快速钳位响应：当瞬态电压到达阈值时快速进入低阻态，钳位电压 38 V 可有效限制受保护节点电压峰值。
- 较低电容：850 pF 的静态电容在信号线保护时需注意对高频信号的影响，适合电源与控制线保护，对高速差分信号可能带来负担。
- 标准化封装：1206 尺寸利于自动贴装与回流焊工艺，布局灵活，适配多数工业与消费电子 PCB 设计。
三、典型应用场景
- 24 V 直流供电系统的入口或各节点保护，如工业控制、楼宇设备、安防与传感器接口。
- 开关电源与 DC-DC 模块的前端浪涌抑制，防止输入瞬态损害后级元件。
- 电源适配器、车载电子（需与车辆规范配合）、通讯设备的过压防护。
- 对于信号线或接口使用时，需评估 850 pF 电容对信号完整性的影响，适用于对带宽要求不高的控制/状态线。
四、设计与布局建议
- 尽量将 MVR1206-240G 放置在被保护点与外部干扰源（如连接器、电源入线）之间的最接近处，减小引线与走线电感。
- 对于高能量环境，建议与熔断器或限流电阻配合使用，避免压敏电阻承受重复大能量冲击导致失效。
- 回流焊温度曲线遵循厂商推荐，避免超温影响长期可靠性。
- 如果用于差分或高速信号线，先评估 850 pF 引入的失配与带宽降低，必要时选用低容型压敏或在保护策略中采用其他器件（如高压 TVS）配合。
五、可靠性与使用注意事项
- 压敏电阻主要用于吸收瞬态能量，不应作为长期限流或稳压元件。持续过压或频繁大电流冲击会加速老化并改变压敏特性。
- 能量标称（1 J）通常基于特定波形（如 8/20 μs），实际能量承受与冲击波形有关，设计时应按最恶劣工况进行裕量评估。
- 在高温、潮湿或化学腐蚀环境下应采取防护措施，延长器件寿命。
六、总结
MVR1206-240G 提供在紧凑 1206 封装下的高效浪涌抑制能力，适合对 24 V 级电源与控制线进行局部保护。设计时需平衡其 850 pF 静态电容对信号的影响，并配合熔断、限流等保护策略以保证长期可靠性。针对具体应用，建议结合实际浪涌波形与频率进行验证，以确定最优保护方案。
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