WMSIC Electronic Components

DOWO P6KE47A

ModelP6KE47A
PackageDO-15
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
DOWO P6KE47A
Type
DOWO
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
P6KE47A
Electronic Component
1
Package
DO-15
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.455g
Electronic Component
1
Electronic Component
BM0264801979
Voltage
64.8V
Current(Ir)
1uA
Voltage(VBR)
44.65V
Electronic Component
Electronic Component
Electronic Component
2000

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

P6KE47A瞬态抑制二极管(TVS)产品概述

P6KE47A是东沃(DOWO)推出的一款单向瞬态抑制二极管(TVS),采用经典DO-15轴向直插封装,专为电子电路中的浪涌过压防护设计,可有效抑制雷击感应、开关瞬态、静电放电等瞬时高压,保护后端敏感元器件(如IC、MOS管、传感器等)。

一、核心应用场景

P6KE47A的性能参数适配中低功率电子设备的过压防护需求,典型应用包括:

  1. 工业控制设备:PLC输入输出端口、传感器接口、电机驱动电路的浪涌防护;
  2. 通信设备:路由器、交换机的电源端口、RS485/CAN总线接口的静电与浪涌防护;
  3. 消费电子:充电器、智能家居设备的电源输入端、显示接口的过压保护;
  4. 汽车电子(低功率场景):车载小功率传感器、辅助电路的瞬态防护(需确认温区适配)。

其600W的峰值脉冲功率(@10/1000us波形)足以应对大多数日常环境中的浪涌冲击,无需额外配置大功率防护器件,兼顾防护效果与成本。

二、关键电性能参数解析

P6KE47A的参数经过严格测试,核心指标可满足主流电路的防护要求:

  1. 极性与截止/击穿特性
    采用单向导通设计(仅抑制反向过压),正常工作时的反向截止电压(Vrwm)为40.2V——即电路正常电压低于40.2V时,TVS处于截止状态,不影响电路功耗;当反向电压超过击穿电压(44.65V) 时,TVS会快速击穿导通,将过压钳位在安全范围。

  2. 钳位与脉冲承载能力
    击穿导通后的钳位电压为64.8V——这是过压被限制的最高电压,需确保后端元器件的最大耐压高于该值(如常见IC耐压70V以上即可适配);
    峰值脉冲电流(Ipp)为9.26A,结合600W峰值脉冲功率(Ppp=600W@10/1000us波形),可有效承载瞬时浪涌电流,避免器件烧毁。

  3. 反向漏电流
    正常截止状态下的反向漏电流(Ir)仅1uA,远低于普通二极管的漏电流,不会造成电路额外功耗,适合低功耗设备使用。

三、封装与可靠性设计

P6KE47A采用DO-15轴向直插封装,具备以下优势:

  1. 安装便捷:通孔焊接方式,适配传统PCB设计,无需特殊工具;
  2. 散热性:封装尺寸适中(直径2.5mm,长度5.5mm),可通过PCB焊盘有效散热,满足600W脉冲功率的短时散热需求;
  3. 环境适应性:环氧树脂封装材料耐温(典型-55℃~+150℃)、绝缘性好,可适应工业环境的温度波动与轻度振动;
  4. 环保合规:符合RoHS无铅要求,适配全球电子设备的环保标准。

四、典型应用电路参考

1. 直流电源端口防护

电路结构:将P6KE47A反向并联在电源正极(+V)与地(GND)之间(TVS阴极接+V,阳极接GND);
工作原理:当电源出现浪涌(如雷击感应导致电压升至50V以上),TVS击穿导通,将电压钳位在64.8V左右,保护后端IC等元件。

2. 通信总线接口防护

电路结构:在RS485/CAN总线的每根信号线(如A、B线)与地之间并联P6KE47A(反向接法);
工作原理:抑制总线中的静电放电(ESD)与浪涌脉冲,避免接口芯片损坏。

注意:单向TVS仅能防护一个方向的过压(如电源正到地),若需双向防护需选择双向TVS(如P6KE47CA)。

五、选型与使用注意事项

  1. 选型匹配:

    • Vrwm需大于电路正常工作电压(如电路电压36V,40.2V的Vrwm留有余量);
    • 钳位电压需小于后端元器件的最大耐压(如IC耐压70V,64.8V满足);
    • 脉冲功率需大于电路可能出现的最大浪涌功率(可通过浪涌测试数据确认)。
  2. 安装要点:

    • 剪短TVS引线(建议长度≤5mm),减少寄生电感(寄生电感会导致浪涌时实际钳位电压升高);
    • 焊接温度控制在260℃以内,焊接时间≤3秒,避免损坏封装与内部芯片。
  3. 环境注意:

    • 避免在腐蚀性气体(如硫化氢、氯气)环境中使用,以免封装老化;
    • 工作温度需在器件允许范围内(典型-55℃~+150℃),高温环境下需增加散热措施。

P6KE47A作为一款性价比突出的单向TVS,凭借稳定的防护性能与便捷的封装设计,成为众多电子设备过压防护的常用选择,可有效降低电路因浪涌损坏的风险,提升设备可靠性。

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