WMSIC Electronic Components

DOWO MVR1206-330G MVR1206

ModelMVR1206-330G
Package1206
BrandDOWO
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration Option 66373

Availability on request

Technical data

Product details

19 specifications

Core information

Product name
DOWO MVR1206-330G
Type
DOWO
Minimum package
3000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
MVR1206-330G
Electronic Component
1
Package
1206
Electronic Component
Varistor Resistor
Electronic Component
1J
Electronic Component
0.053g
Electronic Component
1
Varistor Voltage
33V
Electronic Component
BM0230826980
Voltage
54V
Static Capacitor
750pF@1MHz
Operating Voltage(AC)
20V
Operating Voltage(DC)
26V
Surge Current
100A

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

MVR1206-330G 产品概述

一、产品简介

MVR1206-330G 是东沃(DOWO)推出的一款片式压敏电阻(MOV),采用 1206 封装,针对电源与信号线路的瞬态过压保护设计。器件体积小、响应快,适合表面贴装工艺,用于吸收雷击感应浪涌、开关瞬变及静电放电引起的过压脉冲,保护下游元件免受损坏。

二、主要参数与电性能

  • 压敏电压(Vz):33 V(典型,常用测试电流下测得)
  • 工作电压:DC 26 V,AC 20 V(器件的连续工作电压上限)
  • 钳位电压(Vc):54 V(在指定浪涌电流下的最大钳位电压)
  • 峰值浪涌电流(Imax):100 A(单次浪涌峰值能力)
  • 能量吸收能力:1 J(单脉冲能量吸收额定)
  • 静态电容:750 pF @ 1 MHz(对高速信号有明显影响,应在设计中考虑)
  • 封装:1206,适配常见 SMT 工艺

以上参数用于评估器件在实际系统中的保护能力与对信号完整性的影响。钳位电压表示在浪涌发生时被动夹持的电压水平,能量和峰值电流指示单次冲击时的承受能力,静态电容决定其对高频信号的负载效应。

三、典型应用场景

  • 汽车电子低压线缆与车载充电系统的瞬变抑制(需确认汽车三级要求)
  • 通信设备、路由器、交换机等电源输入端过压保护
  • 工业控制、电源模块、家电适配器的防雷浪涌保护
  • 一般消费电子电源滤波端与防护回路

注意:由于静态电容较大(750 pF),不建议直接用于高速差分数据线(如 USB3.x、HDMI 等)上的敏感信号保护;对低频或电源线保护非常适合。

四、封装与安装注意事项

  • 采用 1206 SMT 封装,兼容标准回流焊工艺;建议遵循制造商推荐的回流温度曲线,避免过高峰值温度和长时间高温暴露。
  • 焊盘设计应兼顾机械强度与热量分布,避免应力集中导致器件裂纹。
  • 严禁在器件已发生击穿或出现明显变色后继续使用;压敏电阻发生导通表示已吸收大能量,可靠性可能下降。

五、选型与使用建议

  • 连续工作电压应低于压敏阈值且不超过器件规定的工作电压(本品 DC 26 V / AC 20 V)。若系统工作电压接近或超过该值,应选用压敏电压更高的型号或并联/并用更高能量器件。
  • 对于存在频繁大能量浪涌的环境,应选用能量等级更高或多级保护方案(如先用高能压敏电阻后接低钳位器件)。
  • 在对信号完整性要求高的场合,优先考虑低电容型抑制器件,或将 MOV 放置在电源入口处而非信号线上。

六、可靠性与存储

  • 存储环境建议干燥、常温、避光,避免长期潮湿和腐蚀性气体。
  • 长期贮存后使用前建议进行外观检查与必要的电气测试(漏电流、压敏电压等),确认性能未退化。
  • 在设计中留有一定裕量,避免器件在临界条件下长期工作,从而延长使用寿命并提高系统可靠性。

总结:MVR1206-330G 以 1206 小封装实现较强的单次浪涌吸收能力(1 J / 100 A),适合低压电源和一般电子设备的输入端防护,但其较高的静态电容在高频信号场合需要谨慎选用或采取替代方案。

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