WMSIC Electronic Components

KUU KBTR04D3

ModelKBTR04D3
Package0402
BrandKUU
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

19 specifications

Core information

Product name
KUU KBTR04D3
Type
KUU
Minimum package
10000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
KUU
Electronic Component
KBTR04D3
Electronic Component
1
Package
0402
Electronic Component
Varistor Resistor
Electronic Component
3mJ
Electronic Component
0.013g
Electronic Component
1
Varistor Voltage
31V~38V
Electronic Component
BM0264342973
Voltage
58V
Static Capacitor
3pF@1MHz
Operating Voltage(AC)
12.7V
Operating Voltage(DC)
18V
Surge Current
1A

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

KBTR04D3 压敏电阻产品概述

KBTR04D3是KUU品牌针对低电压电路瞬态防护推出的小型化贴片压敏电阻,凭借0402封装的高密度适配性、低静态电容的高频兼容性,成为消费电子、物联网、汽车电子等领域终端设备的常用防护器件。

一、产品核心定位与应用场景

该产品聚焦低电压、高密度、高频电路的浪涌防护需求,针对ESD(静电放电)、EFT(电快速瞬变脉冲群)等常见瞬态过压场景提供可靠防护。典型应用覆盖:

  • 消费电子:智能手机/平板的充电接口、蓝牙耳机的音频/数据接口;
  • 物联网:传感器节点(温湿度、运动传感器)的电源/信号端;
  • 汽车电子:车内USB接口、仪表盘辅助电源等低电压辅助电路;
  • 便携式设备:智能手环、移动电源的输入输出端口。

二、关键电气参数解析

KBTR04D3的参数设计精准匹配应用场景,核心参数的实际意义如下:

  1. 压敏电压(31V~38V):常态下(工作电压DC18V/AC12.7V)处于高阻状态,不干扰电路正常工作;浪涌电压超过此范围时,ns级切换导通泄放能量。
  2. 钳位电压(58V):浪涌发生时,将受保护节点电压钳位在58V以内,避免MCU、音频芯片等敏感器件过压击穿。
  3. 浪涌能力(1A峰值/3mJ能量):可应对常规终端浪涌(插拔过压、人体静电),但为小功率防护,不适合大功率雷击场景。
  4. 静态电容(3pF@1MHz):低电容特性保证高频电路(射频接口、高速数据传输线)中信号无明显衰减,维持完整性。

三、封装与可靠性设计

KBTR04D3采用0402封装(1005公制,1.0mm×0.5mm),具备以下优势:

  • 高密度适配:体积仅为0603封装的1/4,大幅提升PCB布局密度,满足小型化设备需求;
  • 焊接兼容性:支持回流焊、波峰焊,焊接温度(峰值230℃~250℃)与常规贴片元件一致,无需特殊工艺;
  • 环境可靠性:通过-40℃~+85℃温度循环、85℃/85%RH湿度测试,稳定工作在工业级/汽车级环境;
  • 材料稳定性:氧化锌基压敏陶瓷,压敏特性随温度变化小,长期工作性能可靠。

四、典型应用案例参考

  1. 智能手机Type-C接口:并联Vbus与GND,防护插拔浪涌及静电,低电容不影响USB3.0数据传输;
  2. 蓝牙耳机音频接口:保护Codec芯片免受静电干扰,3pF电容对10kHz~20kHz音频无明显衰减;
  3. 物联网温湿度传感器:电源端并联防护雷电感应浪涌及开关过压,延长传感器寿命;
  4. 车载USB接口:满足车载温度要求,防护系统瞬态过压,保障充电安全。

五、选型与使用注意事项

  1. 工作电压匹配:电路常态电压需低于DC18V/AC12.7V,避免长期过压导致老化失效;
  2. 浪涌能量评估:户外大功率浪涌场景需搭配TVS或大功率压敏电阻形成多级防护;
  3. 电容兼容性:2.4GHz蓝牙等射频电路需确认3pF电容是否满足阻抗匹配,必要时选低电容型号;
  4. 安装方式:必须并联在被保护端与地之间,且与器件距离≤5mm,减少引线电感影响;
  5. 焊接规范:遵循KUU手册,回流焊时间不超过30秒,避免过热开裂。

KBTR04D3以平衡的防护能力、小型化设计和高频兼容性,成为低电压电路浪涌防护的高性价比选择,广泛适配各类终端设备的紧凑设计需求。

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