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DOWO MVR1206-180G MVR1206
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO MVR1206-180G
- Type
- DOWO
- Minimum package
- 3000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- MVR1206-180G
- Electronic Component
- 1
- Package
- 1206
- Electronic Component
- Varistor Resistor
- Electronic Component
- 800mJ
- Electronic Component
- 0.051g
- Electronic Component
- 1
- Varistor Voltage
- 18V
- Electronic Component
- BM0231110377
- Voltage
- 30V
- Static Capacitor
- 1.2nF@1MHz
- Operating Voltage(AC)
- 11V
- Operating Voltage(DC)
- 14V
- Surge Current
- 150A
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MVR1206-180G 产品概述
一、产品简介
MVR1206-180G 是东沃（DOWO）推出的一款1206 封装金属氧化物压敏电阻（MOV），用于对直流和交流供电线路的瞬态过电压进行钳位保护。典型应用为12V系统防护、板级浪涌抑制及 EMI 辅助防护。器件体积小、能量吸收能力适中，适合表贴化、批量化生产的电子设备。
二、主要电气参数与解读
- 钳位电压（Vc）：30V（典型），表明在峰值浪涌时器件将电压钳位在该水平附近，保护下游电路。
- 能量吸收：800 mJ，适用于短时中等能量脉冲的吸收与分散。
- 工作电压：DC 14V；AC 11V，推荐用于额定电压低于该值的直流或交流供电系统，如12V汽车/工业总线及小型电源。
- 峰值浪涌电流：150 A（典型），对短时大电流冲击有良好承受能力。
- 压敏电压（VZ）：18V，为器件进入导通区的参考电压。
- 静态电容：1.2 nF @1 MHz，表明在高频下存在一定容性耦合，需考虑对信号完整性的影响。
三、典型应用场景
- 汽车电子、车载充电与辅助电源（12V 母线防护）。
- 工业控制设备的板级浪涌保护。
- 通信设备和路由器的电源入口防护。
- 需要体积小且能量吸收适中的场合的局部过电压保护。
四、封装与安装建议
器件为1206 SMD 封装，便于自动贴装与回流焊工艺。推荐：
- 遵循厂商给定的焊盘布局与回流温度曲线（避免超温或长时间保温）。
- 焊盘采用适当铜面积与过孔以控制焊料量，保证机械可靠性。
- 对于高能量冲击场合，建议在器件附近留出足够的爬电距离及热量散发空间。
五、选型与工程注意事项
- 工作电压需低于器件额定工作电压，预留安全余量；若工作环境可能出现高压尖峰，应选择额定电压更高或能量更大的型号。
- 静态电容较大（1.2 nF），不建议用于高速信号线或高频差分对的直接保护，否则会影响信号带宽与阻抗。
- 能量与峰值电流参数需对照实际浪涌工况（脉冲宽度、次数）进行匹配，必要时采用并联或串联组合提升性能。
- 注意在长期高温或重复冲击条件下的老化问题，设计时考虑冗余保护手段（如熔丝、TVS 二极管配合）。
六、可靠性与检测建议
出厂前应进行外观、阻抗及吸收能量测试；工程验证阶段建议做脉冲浪涌（按实际工况）与温度循环试验，评估钳位电压漂移与残余损耗。对于安全关键系统，需建立周期性更换或在线监测策略，避免单点失效带来系统风险。
总结：MVR1206-180G 在体积受限、需要中等能量吸收与较高峰值浪涌电流承受的12V级别电源保护中具有良好性价比。在选型与布局时重点关注工作电压余量与电容对信号的影响，以确保保护效果与系统性能的平衡。
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