WMSIC Electronic Components

UMW MMBZ18VALT1G

ModelMMBZ18VALT1G
PackageSOT-23
BrandUMW
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 25+

Available for RFQ

Technical data

Product details

13 specifications

Core information

Product name
UMW MMBZ18VALT1G
Type
UMW
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
UMW
Electronic Component
MMBZ18VALT1G
Electronic Component
1
Package
SOT-23
Electronic Component
0.034g
Electronic Component
1
Electronic Component
BM0265804779
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.

MMBZ18VALT1G TVS二极管产品概述

一、产品基本定义与定位

MMBZ18VALT1G是UMW友台半导体推出的一款双路单向瞬态抑制二极管(TVS),核心作用是快速抑制电子电路中的瞬态过压(如静电放电、浪涌脉冲),将电压钳位在安全范围,保护后级敏感元件(如MCU、传感器、接口芯片)免受损坏。该器件采用紧凑的SOT-23贴片封装,主打小尺寸、双路防护、低功耗,适配空间受限的小型化应用场景,是消费电子、工业微模块等领域的高性价比防护方案。

二、核心电性能参数解析

该器件的关键参数明确了其防护能力与工作边界,核心指标及实际意义如下:

  1. 工作电压与导通阈值:
    单向极性设计,正常工作时可承受的最大反向截止电压(Vrwm)为14.5V,确保常规电路电压下不导通、不干扰信号;击穿电压(Vbr)为18V,是器件开始启动防护的阈值——当电路电压超过18V时,TVS管快速导通,分流瞬态电流。
  2. 瞬态防护能力:
    峰值脉冲电流(Ipp)达1.6A,可承受1ms脉冲宽度下的峰值脉冲功率(Ppp)40W,能有效抑制常见的浪涌(如电源开关瞬态、雷击感应脉冲);钳位电压(Vc)为25V,是峰值脉冲作用下的最大电压限制,可将后级电路电压稳定在安全区间(避免超过芯片耐压)。
  3. 低功耗特性:
    反向漏电流(Ir)仅50nA,远低于常规TVS管的漏电流水平,正常工作时对电路功耗影响极小,适合低功耗设备(如智能穿戴、物联网节点)应用。

三、封装与结构优势

MMBZ18VALT1G采用SOT-23贴片封装,尺寸紧凑(典型规格:2.9mm×1.6mm×1.1mm),适配自动化贴装生产线,同时满足小型电子设备的空间需求。
器件为双路集成设计,可同时为两路独立电路(如双路数据线、双路电源输入)提供防护,减少PCB上的器件数量,简化电路布局(无需使用两个单路TVS管),进一步降低设计成本与空间占用。

四、防护标准与可靠性

该器件符合IEC 61000-4-2静电放电防护标准,可应对±8kV(接触放电)、±15kV(空气放电)等常见静电冲击,同时具备对浪涌脉冲的抑制能力,可靠性覆盖工业级与消费级设备的防护要求。
其击穿电压一致性好(典型偏差±5%)、漏电流稳定,长期工作下防护性能无明显衰减,可有效降低设备的静电/浪涌故障率。

五、典型应用场景

基于小封装、双路防护、低功耗的特点,MMBZ18VALT1G广泛应用于以下领域:

  1. 消费电子:智能手机、平板电脑、蓝牙耳机的USB接口、音频接口、充电端口的静电与浪涌防护;
  2. 智能穿戴:智能手表、手环的信号链路(如蓝牙天线)与电源输入防护;
  3. 工业微模块:物联网传感器节点、微型MCU模块的I/O口、电源轨防护;
  4. 车载辅助设备:车载USB车充、小屏显示器的低电压瞬态防护(需结合应用场景验证)。

综上,MMBZ18VALT1G以紧凑封装、双路防护、低功耗为核心优势,是小型化电子设备过压防护的实用选择,可有效提升设备的抗干扰能力与可靠性。

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