WMSIC Electronic Components

Brightking 390KD07J

Model390KD07J
PackageElectronic Component
BrandBrightking
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
Brightking 390KD07J
Type
BRIGHTKING
Minimum package
1000 袋

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
390KD07J
Electronic Component
1
Package
Electronic Component
Electronic Component
Varistor Resistor
Electronic Component
2.1J
Electronic Component
0.488g
Electronic Component
1
Varistor Voltage
39V
Electronic Component
BM0264339535
Voltage
77V
Static Power
20mW
Static Capacitor
1.3nF@1kHz
Operating Voltage(AC)
25V
Operating Voltage(DC)
31V

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

Brightking 390KD07J径向引线压敏电阻产品概述

一、产品基本信息

台湾君耀(Brightking)推出的390KD07J是一款针对低电压电路设计的径向引线压敏电阻,核心参数明确:压敏电压标称39V(公差±10%),封装直径5mm,属于小型化过压防护元件。该产品依托君耀成熟的压敏电阻制造工艺,兼顾浪涌防护能力与应用灵活性,适用于多种低功耗电子设备的瞬态过压防护场景。

二、核心电气参数详解

390KD07J的电气参数围绕低电压防护需求优化,关键指标清晰可参考:

  1. 压敏电压(V₁ₘₐ):39V±10%,指元件通过1mA直流电流时的电压值,是判断防护等级的核心基准,公差±10%可满足大多数通用电路的匹配需求;
  2. 工作电压:直流(DC)最大工作电压31V,交流(AC)最大工作电压25V(有效值),需注意AC工作电压为有效值,实际峰值需结合电路波形评估,避免长期过压;
  3. 钳位电压(V_C):77V,指在10/700μs浪涌波形下,通过250A峰值电流时的电压值——当电路出现浪涌时,该元件可将电压钳位在77V以内,保护后端敏感元件;
  4. 浪涌耐受能力:峰值浪涌电流250A(8/20μs波形),能量耐受2.1J(10/1000μs波形),可有效应对常见的雷击浪涌、电源开关瞬态等干扰;
  5. 静态特性:静态电容1.3nF(1kHz测试条件),静态功率20mW,电容值处于低范围,适合对电容敏感的信号电路(如低速数据传输、音频电路),避免高频干扰。

三、封装与物理特性

390KD07J采用径向引线封装,直径5mm,体积紧凑,便于PCB板焊接与空间布局;引线材质为镀锡铜线,抗氧化性能良好,焊接可靠性高。其工作温度范围为-40℃+85℃,存储温度范围-55℃+125℃,湿度≤85%RH(存储),可适应大多数工业与民用环境的温度变化。

四、典型应用场景

结合390KD07J的低电压、小体积特性,主要应用于以下场景:

  1. 消费电子:手机充电器、小型家电(如台灯、加湿器)的电源端口过压防护,应对插拔浪涌、雷击感应等干扰;
  2. 通信设备:低功耗无线模块(如蓝牙、WiFi模块)的电源与信号线路防护,避免瞬态电压损坏射频电路;
  3. 工业控制:小型传感器(如温度、压力传感器)的辅助电路防护,适配工业现场的低电压供电需求;
  4. 汽车电子:12V系统的辅助电路(如车载USB、小型显示屏)防护,需注意工作电压匹配,避免超25V AC有效值使用。

五、关键性能优势

  1. 浪涌防护与成本平衡:250A峰值电流+2.1J能量的浪涌能力,可覆盖90%以上的通用低电压电路防护需求,同时小体积设计降低系统成本;
  2. 电容可控:1.3nF的静态电容远低于同规格高压压敏电阻,适合对电容敏感的信号电路,避免影响传输质量;
  3. 安装灵活:径向引线封装可直接焊接于PCB板,无需特殊夹具,适配手工与自动化焊接工艺;
  4. 品牌可靠性:台湾君耀作为专业压敏电阻厂商,产品符合RoHS环保标准,通过多项安规认证(如UL、VDE),质量稳定可靠。

六、选型与使用注意事项

  1. 工作电压匹配:DC电路正常工作电压需≤31V,AC电路≤25V(有效值),严禁长期工作在压敏电压(39V)附近,否则会加速元件老化;
  2. 配合保险丝使用:压敏电阻属于耗散型防护元件,多次浪涌后可能短路,需串联慢断型保险丝,防止电路起火;
  3. 高频电路评估:若应用于射频(RF)电路,需注意1.3nF电容对信号的衰减,建议通过仿真或实验验证;
  4. 焊接规范:烙铁温度≤350℃,焊接时间≤3s,避免过热损坏元件内部结构;
  5. 存储条件:存储时远离潮湿、腐蚀性气体,开封后尽快使用,避免长期暴露于空气中。

该产品以稳定的防护性能与紧凑体积,成为低电压电路过压防护的高性价比选择,可满足多数民用与工业级场景的基础防护需求。

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