WMSIC Electronic Components

TDK AVRH10C101KT4R7FA8

ModelAVRH10C101KT4R7FA8
Package0402
BrandTDK
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 26+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
TDK AVRH10C101KT4R7FA8
Type
TDK
Unit
Electronic Component
Minimum package
10000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
TDK
Electronic Component
AVRH10C101KT4R7FA8
Electronic Component
1
Package
0402
Electronic Component
Varistor Resistor
Electronic Component
30mJ
Electronic Component
0.011g
Electronic Component
1
Varistor Voltage
100V
Electronic Component
BM0258758175
Voltage
190V
Static Capacitor
4.7pF@1MHz
Operating Voltage(DC)
70V
Surge Current
1A

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

TDK AVRH10C101KT4R7FA8 压敏电阻产品概述

TDK AVRH10C101KT4R7FA8是一款专为低功耗、高密度电子设备设计的小型化片式压敏电阻,核心定位为敏感电路的瞬态浪涌(含静电放电ESD)防护,兼具低电容特性与紧凑封装,适配射频、高速数字接口等对信号干扰敏感的场景。

一、核心定位与应用场景

该压敏电阻属于TDK AVRH系列高可靠性产品,针对消费电子、物联网、工业传感器等领域的小型化设计需求,重点解决电路中常见的瞬态浪涌问题(如电源尖峰、静电放电、信号线路过压)。其小体积、低电容的特点,尤其适合以下场景:

  • 便携式设备(智能手机、智能手表)的电源/接口防护;
  • 无线通信模块(WiFi、蓝牙、Sub-GHz)的射频前端防护;
  • 高速数字接口(USB、HDMI、MIPI)的ESD抑制;
  • 低功率DC-DC转换器、传感器节点的输入输出防护。

二、关键电气参数解析

压敏电阻的性能核心由电气参数决定,该产品的关键参数需结合应用场景精准匹配:

1. 压敏电压与工作电压

  • 压敏电压(100V):指通过1mA测试电流时的电压值,是产品标称防护电压基准;
  • 直流工作电压(70V):长期可靠工作的直流电压上限(AC工作电压约为42V,因压敏电阻对AC的耐受能力约为DC的60%)。需注意:电路正常工作电压需低于压敏电压的80%,该产品70V DC满足此要求,可稳定工作无漏电流。

2. 浪涌防护核心参数

  • 钳位电压(190V):当峰值浪涌电流为1A时,产品两端的电压峰值,是浪涌防护的关键指标(越低表示防护效果越好);
  • 峰值浪涌电流(1A):单次可承受的最大浪涌电流峰值,配合能量耐受(30mJ),可有效抑制一般强度的瞬态浪涌(如人体静电放电、电源瞬态尖峰)。

3. 低电容特性

  • 静态电容(4.7pF@1MHz):该参数是高频电路适配的核心优势——低电容可最大程度减少对射频信号、高速数字信号的干扰,避免信号衰减或失真,适合WiFi、蓝牙等2.4GHz频段的射频电路。

三、封装与物理特性

该产品采用0402封装(公制1005),是目前片式元件中体积最小的封装之一:

  • 尺寸:长1.0mm×宽0.5mm×高0.5mm(典型值);
  • 结构:表面贴装(SMD),两端电极设计,适配回流焊、波峰焊工艺;
  • 重量:约0.005g,对设备整体重量影响可忽略。

小体积设计使其可在高密度PCB布局中灵活放置,尤其适合智能手机、可穿戴设备等空间受限的产品。

四、性能优势与设计价值

相比普通压敏电阻,该产品的差异化优势体现在:

  1. 高频适配性:4.7pF低电容解决了传统压敏电阻“防护性能与信号干扰”的矛盾,可直接并联在射频天线、高速接口线路上;
  2. 快速响应:压敏电阻响应时间为ns级(通常<10ns),能瞬间抑制浪涌,保护后端敏感元件(如MCU、射频芯片);
  3. 高可靠性:TDK的工艺保障,符合AEC-Q200(汽车级)、IEC 61000-4-2(ESD)等标准,可长期稳定工作在-40℃~+85℃的环境温度范围;
  4. 成本与空间平衡:0402封装节省PCB面积,降低整体BOM成本,同时满足小型化设计需求。

五、选型与使用注意事项

为确保防护效果与长期可靠性,需注意以下要点:

  1. 参数匹配:需确认电路的最大工作电压(DC/AC)不超过产品额定值,浪涌能量/电流不超过30mJ/1A;
  2. 布局建议:在高频电路中,应尽量靠近被防护元件放置,减少线路寄生电感;避免与高频信号路径平行布线;
  3. 焊接工艺:回流焊温度需符合TDK datasheet要求(通常峰值温度<245℃,时间<30s),避免过热导致电容变化或性能下降;
  4. 并联扩容:若需更高浪涌耐受能力,可并联多个该产品,但需注意电容叠加(如2个并联则电容为9.4pF),仅适合低频场景;
  5. 环境要求:避免在高湿度(>85%RH)或腐蚀性环境中长期使用,必要时需加防护涂层。

六、典型应用案例参考

  1. 智能手机USB接口防护:并联在USB电源与地之间,抑制静电放电(人体接触USB口时的ESD)与电源瞬态尖峰;
  2. 蓝牙模块射频前端:并联在天线与地之间,保护蓝牙芯片免受静电与浪涌损坏,同时低电容不影响2.4GHz信号传输;
  3. 工业温湿度传感器:并联在传感器电源输入与信号输出端,防护工业现场的电磁干扰与瞬态浪涌;
  4. 可穿戴设备充电接口:保护充电电路免受充电时的电压尖峰与静电损坏,适配小体积设计。

TDK AVRH10C101KT4R7FA8凭借“小型化、低电容、高可靠性”的综合优势,成为当前电子设备浪涌防护的主流选型之一,尤其适合对信号质量与体积有严格要求的场景。

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