WMSIC Electronic Components

DOWO MVR1206-470G MVR1206

ModelMVR1206-470G
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
DOWO MVR1206-470G
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
MVR1206-470G
Electronic Component
1
Package
1206
Electronic Component
Varistor Resistor
Electronic Component
1J
Electronic Component
0.051g
Electronic Component
1
Varistor Voltage
47V
Electronic Component
BM0258760028
Voltage
77V
Static Capacitor
850pF@1MHz
Operating Voltage(AC)
28V
Operating Voltage(DC)
36V
Surge Current
100A

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

MVR1206-470G 产品概述

一、产品简介

MVR1206-470G 是东沃(DOWO)推出的一款1206封装压敏电阻(多层抑制器),用于低压直流/交流系统的浪涌与过压保护。其标称压敏电压为47V,钳位电压为77V,适合在工作电压不超过36V DC(或28V AC RMS)的场合作为瞬态过压防护元件。器件封装为常见的1206 尺寸,便于表面贴装生产。

二、主要电气参数

  • 压敏电压 (Vb):47V
  • 钳位电压 (Vc):77V
  • 额定工作电压:36V DC / 28V AC
  • 峰值浪涌电流:100A(器件能短时间承受的浪涌能力,具体测试波形与条件以厂方说明为准)
  • 能量吸收:1J
  • 静态电容:850pF @ 1MHz(较高的静态电容会影响高频信号特性)

注:850pF 在1MHz 时的容抗约为 1/(2π·1MHz·850pF) ≈ 187Ω;在更高频率下容抗迅速下降,会对高速数据信号造成明显负载,应在设计中予以考虑。

三、特点与优势

  • 小型化封装(1206),适合自动贴装与高密度 PCB 布局;典型外形约 3.2mm × 1.6mm。
  • 工作电压等级适配 12V/24V 及常见工业小功率电源总线的瞬态抑制需求。
  • 峰值浪涌电流 100A 与 1J 能量吸收能力,提供对瞬态冲击(例如开关浪涌、瞬态过压)的有效保护。
  • 由多层陶瓷工艺实现较高的体积能量密度,可靠性好,适合批量制造与长期使用。

四、典型应用场景

  • 通用电源输入与直流总线的浪涌保护(开关电源输入端、逆变器控制板等)。
  • 通信与数据接口的低压保护(当对频率响应要求不高时);但对于高速 USB、HDMI、以太网等高速差分信号线,需评估其 850pF 电容对信号的影响,或选用低电容替代件。
  • 工业控制、安防设备、汽车电子(非高压域)等需要抗浪涌与瞬态抑制的场合。

五、设计与安装建议

  • 布局:压敏电阻应尽量靠近被保护器件的输入端或电源入口,焊盘短且对称,以减少串联电感。
  • 热管理:尽管封装小,但在连续重复浪涌或高能量情况下会发热,建议在布局时预留一定散热区域并避免紧邻热源。
  • 频率影响:若电路包含高带宽信号或敏感采样路径,需评估 850pF 静态电容对信号完整性的影响;必要时考虑并联小电容或改用低容型压敏器件。
  • 焊接与清洗:遵循常规 1206 SMT 回流焊工艺参数;清洗时使用对陶瓷和焊点安全的溶剂,避免长期浸泡或机械应力。

六、可靠性与选型注意事项

  • 浪涌规格(100A/1J)通常基于特定波形(如8/20μs)或测试条件,选型时应索取厂方完整的浪涌曲线与寿命曲线,以匹配实际电磁兼容(EMC)和抗浪涌要求。
  • 多次冲击后器件特性会累积变化,关键系统应在设计中保留冗余或易更换的保护元件。
  • 若应用于汽车或高可靠性场合,建议确认器件是否满足相关行业认证与温度循环、湿热等环境试验要求。

七、封装与订货信息

  • 型号:MVR1206-470G
  • 品牌:DOWO(东沃)
  • 封装:1206(SMD)
  • 描述:未分类(请按具体应用向供应商确认详细规格书与测试报告)

如需更详细的电气特性曲线(V–I 曲线、钳位与漏电随温度的变化、浪涌波形下的钳位电压)、封装尺寸图或推荐的 PCB 布局示意图,可向东沃或授权代理索取完整数据手册与应用说明。

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