WMSIC Electronic Components

DOWO P4KE10CA

ModelP4KE10CA
PackageDO-204AL(DO-41)
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 P4KE10CA
Type
DOWO
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
P4KE10CA
Electronic Component
1
Package
DO-204AL(DO-41)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.25g
Electronic Component
1
Electronic Component
BM0264356075
Voltage
14.5V
Current(Ir)
10uA
Voltage(VBR)
9.5V
Electronic Component
Electronic Component
Electronic Component
5000

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

P4KE10CA 产品概述

一、产品简介

P4KE10CA 是 DOWO(东沃)推出的一款双向瞬态电压抑制器(TVS),以 DO-204AL(DO-41)轴向封装供货,专用于保护电子电路免受瞬态过压冲击。该器件响应速度快、钳位能力强,适合用于直流或交流系统中对双极性浪涌的抑制。典型应用包括工业控制电源、通信接口、电源模块及汽车电子等需要双向浪涌防护的场景。

二、主要参数

  • 极性:双向(Bidirectional)
  • 反向截止电压 Vrwm:8.6 V
  • 击穿电压 VBR:9.5 V(标称)
  • 钳位电压 Vc:14.5 V(在标称脉冲条件下)
  • 峰值脉冲电流 Ipp:14.5 A(10/1000 µs 波形)
  • 峰值脉冲功率 Ppp:400 W(10/1000 µs 波形)
  • 反向电流 Ir:10 µA(在 Vrwm 条件下)
  • 类型:TVS(瞬态抑制二极管)
  • 品牌:DOWO(东沃)
  • 封装:DO-204AL(DO-41)轴向引线封装

三、工作原理与特性要点

  • 双向结构:P4KE10CA 在两极性瞬态过压条件下都能起到钳位作用,正、负方向对称工作,无需极性区分,适合交流或可能出现反向脉冲的系统。
  • 快速响应:作为 TVS 器件,其响应时间接近瞬时(纳秒级),可在瞬态出现的极短时间内把过压钳制到安全电压范围,保护后端敏感元件。
  • 高能量吸收:在 10/1000 µs 的浪涌波形下,器件能承受峰值功率 400 W,对应在实际浪涌条件下提供大幅能量吸收能力;在该测试条件下,峰值脉冲电流为 14.5 A,钳位电压约 14.5 V。
  • 低泄漏:在额定反向截止电压(8.6 V)下,反向漏电流仅约 10 µA,有助于保持系统待机功耗低且不影响正常工作。

四、典型应用场景

  • 电源与稳压模块的浪涌保护:在电源输入端或关键节点并联,可防止雷击、开关瞬变等导致的过压损毁。
  • 通信接口与数据线保护:适用于需要双向保护的串口、CAN、RS-485 等差分或双向信号线。
  • 汽车电子与车载设备:对车内可能出现的反向极性或负载瞬态提供防护(实际使用请参考车规级要求与温度循环能力)。
  • 工业控制与仪表:保护控制器输入、传感器供电线免受外部浪涌干扰。

五、封装与安装注意

  • DO-204AL(DO-41)为轴向引线、通孔封装,机械强度高、热容量大,适合波峰或手工焊接。
  • 建议安装在被保护线靠近源头处(例如靠近接口或电源输入)以减少引线感应与布线上的寄生阻抗,从而提高保护效果。
  • 焊接与热处理遵守厂商的工艺建议,避免过高焊接温度或过长停留时间,以防封装或引线受损。
  • 轴向封装便于替换和维修,但在高速或高频信号线上应注意寄生电容和引线电感带来的影响。

六、选型与使用建议

  • 工作电压匹配:Vrwm=8.6 V,适用于系统稳态电压不超过该值的场合;若系统工作电压较高,应选用额定 Vrwm 更高的型号。
  • 考虑最大浪涌能量:若系统可能遭受比 10/1000 µs、14.5 A 更大的浪涌,需选择功率或电流等级更高的 TVS 器件或采用级联保护策略(如保险丝+TVS)。
  • 温度与环境:在高温或严苛环境下,应参考厂方的温度系数和长期老化性能,必要时做实际环境下的寿命评估。
  • 双向应用注意:双向 TVS 在正常工作电压下两端对称钳位,适合交流或可能出现反向瞬变的场景;若仅需单极性保护,可优先考虑单向 TVS 以获得更低的钳位电压。

七、可靠性与维护

  • TVS 为牺牲性保护元件,经历多次大能量浪涌后性能可能衰减或失效,建议在明显遭受高能浪涌后进行检测或更换。
  • 在设计保护方案时,可配合限流元件(保险丝、PTC)、滤波器或阻尼元件共同使用,以分散能量并延长 TVS 的寿命。

总结:P4KE10CA(DOWO,DO-41 封装)以其双向抑制、400W 峰值功率和在 10/1000 µs 浪涌下 14.5A 的吸收能力,适合广泛的直流/交流瞬态保护场合。正确匹配系统工作电压与预期浪涌能量,并按厂方的安装与焊接规范使用,可获得可靠的浪涌保护效果。

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