WMSIC Electronic Components

DOWO 1.5KE30A

Model1.5KE30A
PackageDO-201AD
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 1.5KE30A
Type
DOWO
Minimum package
1250 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
1.5KE30A
Electronic Component
1
Package
DO-201AD
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.91g
Electronic Component
1
Electronic Component
BM0264254680
Voltage
41.4V
Current(Ir)
1uA
Voltage(VBR)
28.5V
Electronic Component
Electronic Component
Electronic Component
1250

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

1.5KE30A瞬态抑制二极管(TVS)产品概述

1.5KE30A是DOWO(东沃)品牌推出的单向瞬态抑制二极管(TVS),专为中功率电子设备的浪涌过压防护设计,具备1.5kW级峰值脉冲功率容量,可有效抑制静电放电、雷击浪涌及电源瞬变等异常电压冲击,保护敏感电路免受损坏。

一、产品核心定位与典型应用场景

1.5KE30A的设计目标是为中功率电子系统提供经济可靠的过压防护,其参数适配性覆盖多个领域:

  • 工业控制领域:PLC(可编程逻辑控制器)的电源输入端口、传感器接口的浪涌防护;
  • 通信设备:基站射频模块、光传输设备的信号与电源端口防护;
  • 电源系统:开关电源输出端、车载充电模块的过压保护;
  • 消费电子:高端家电、智能终端的电源接口防护(针对中等功率浪涌场景)。

该产品通过轴向引线封装(DO-201AD)适配传统插件安装工艺,适合对成本敏感且需要稳定防护的批量应用。

二、关键电气参数解析

1.5KE30A的核心参数经过精准设计,确保防护性能与电路兼容性平衡:

  • 极性与截止特性:单向极性(仅反向导通防护),反向截止电压( V_{RWM}=25.6V )(正常工作时反向偏置下可承受的最大连续电压),击穿电压( V_{BR}=28.5V )(比( V_{RWM} )高约11%,避免电路正常波动触发防护),反向漏电流( I_R=1\mu A )(正常工作时功耗极低,不影响电路效率);
  • 浪涌防护能力:峰值脉冲功率( P_{PP}=1.5kW )(基于10/1000μs标准浪涌波形,即脉冲上升沿10μs、半峰值持续1000μs),峰值脉冲电流( I_{PP}=36.23A )(由( P_{PP}=V_{CL} \times I_{PP} )推导,( 41.4V \times 36.23A \approx 1.5kW )),钳位电压( V_{CL}=41.4V )(浪涌发生时,TVS导通后两端的最大电压,直接决定被保护电路的安全上限)。

三、封装与可靠性设计

1.5KE30A采用DO-201AD轴向引线封装,具备以下设计优势:

  • 散热性能:轴向封装结构利于热量向引线及PCB扩散,可承受1.5kW脉冲功率下的瞬时热应力;
  • 机械可靠性:引线镀锡处理(抗氧化),管体采用绝缘环氧树脂封装,耐焊接温度(260℃/10s),适配回流焊与波峰焊工艺;
  • 环境适应性:符合商业级(-55℃~+150℃)或工业级温度范围(需结合品牌具体规格),可在复杂工况下长期稳定工作。

四、性能优势与竞争特点

相较于同类产品,1.5KE30A的核心优势体现在:

  1. 参数梯度精准:( V_{RWM} )、( V_{BR} )、( V_{CL} )梯度合理(25.6V→28.5V→41.4V),既避免正常电压波动误触发,又能快速钳位浪涌电压;
  2. 高功率密度:1.5kW脉冲功率适配多数中功率设备的浪涌需求,无需并联多个低功率TVS,简化电路设计;
  3. 低功耗兼容:1μA反向漏电流,不影响电路正常工作效率,适合低功耗系统;
  4. 品牌保障:DOWO(东沃)作为国内TVS领域的成熟厂商,产品经过可靠性测试(如温度循环、振动测试),品质稳定。

五、选型与使用注意事项

为确保1.5KE30A的防护效果,需注意以下要点:

  1. 极性确认:单向TVS需严格匹配电路极性(反向接被保护电路),接反会导致TVS正向导通,无法实现过压防护;
  2. 电压匹配:( V_{RWM} )需高于电路正常工作电压(如电路正常电压24V,( V_{RWM}=25.6V )刚好适配);
  3. 功率裕量:实际浪涌功率需低于1.5kW,若存在更高浪涌风险,建议并联多个TVS或选择更高功率型号;
  4. 安装散热:轴向封装需预留散热空间,避免密集安装导致热量积聚;
  5. 温度影响:高温环境下(如+125℃),反向漏电流会略有增加,需结合实际工作温度调整参数裕量。

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