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DOWO P4KE33A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO P4KE33A
- Type
- DOWO
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- P4KE33A
- Electronic Component
- 1
- Package
- DO-41
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.348g
- Electronic Component
- 1
- Electronic Component
- BM0264866286
- Voltage
- 45.7V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 31.35V
- 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.
P4KE33A 产品概述
一、产品简介
P4KE33A 是一款由 DOWO（东沃）提供的高性能瞬态电压抑制（TVS）二极管，单向结构，采用玻璃钝化芯片工艺，封装为 DO-41。器件专为抑制瞬态浪涌和保护敏感电子设备设计，在雷击、电源浪涌或开关瞬变情况下能迅速钳位并吸收高能脉冲。
二、主要技术参数
- 反向截止电压 Vrwm：28.2 V
- 击穿电压 VBR：31.35 V
- 钳位电压（Ipp 条件）：45.7 V
- 峰值脉冲电流 Ipp：8.75 A
- 峰值脉冲功率 Ppp：400 W（10/1000 μs 波形，重复率/占空比 0.01%）
- 反向电流 Ir：1 μA（典型，静态低泄漏）
- 类型：单向 TVS，亦提供双向单元可选
- 封装：DO-41，符合 RoHS 标准
三、关键性能特点
- 高能量吸收：在 10/1000 μs 波形下可承受 400 W 峰值脉冲功率，适用于电源线和通信线路的强脉冲抑制。
- 优良钳位能力：在指定脉冲条件下钳位电压约 45.7 V，能有效限制被保护电路上的过压。
- 快速响应：TVS 器件响应速度极快，可在纳秒级别夹断瞬态，保护敏感半导体器件。
- 低泄漏电流：反向泄漏典型 1 μA，便于在低功耗系统中使用而不显著增加静态损耗。
- 可靠工艺：玻璃钝化芯片提高稳定性和长寿命，适应较宽的温度和环境条件。
四、典型应用场景
- 电源输入和稳压电路防护
- 通信接口（如串口、RS-485、CAN 总线等）浪涌抑制
- 汽车电子、工业控制设备和楼宇自控系统的过压保护（需选型确认环境等级）
- 家用电器和消费电子中对雷击或开关扰动敏感的节点防护
五、封装与可靠性说明
DO-41 轴向封装便于通孔安装和焊接加工，机械强度和散热性能适中。器件符合 RoHS 环保标准，玻璃钝化处理提升抗湿、抗热和长期稳定性。推荐按厂商数据手册的最大额定值和脉冲测试条件进行热设计与布板，以保证长期可靠性。
六、选型与使用建议
- 根据实际最大工作电压选择 Vrwm 与 VBR，确保平时工作电压远低于击穿电压以避免误触发。
- 对于反向和双向保护需求，选取对应型号（单向/双向）。
- 在高能脉冲环境下注意并联、散热和浪涌路径的设计，必要时配合熔断器或阻尼元件提升系统保护等级。
P4KE33A 在中等能量脉冲保护场合具有良好的性价比和可靠性，是多类电子系统常用的 TVS 保护选择。若需进一步的温度特性曲线、功率降额表或 PCB 布局建议，可参照厂商完整数据手册或联系供应商技术支持。
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