WMSIC Electronic Components

KUU KSMAJ15A-E3/61

ModelKSMAJ15A-E3/61
PackageSMA
BrandKUU
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
KUU KSMAJ15A-E3/61
Type
KUU
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
KUU
Electronic Component
KSMAJ15A-E3/61
Electronic Component
1
Package
SMA
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.077g
Electronic Component
1
Electronic Component
BM0264896714
Operating Temperature
55℃~+150℃
Voltage
24.4V
Current(Ir)
1uA
Voltage(VBR)
16.7V
Electronic Component
Electronic Component

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

KSMAJ15A-E3/61 单向瞬态抑制二极管(TVS)产品概述

KSMAJ15A-E3/61是KUU品牌推出的表面贴装式单向瞬态抑制二极管(TVS),核心作用是快速吸收电路中的瞬态过压脉冲,保护敏感电子元件免受雷击、静电放电(ESD)、开关浪涌等干扰损坏。其聚焦15V左右低电压电路防护,兼顾宽温适应性、高脉冲耐受能力与小体积特性,可广泛应用于消费电子、工业控制、汽车电子等领域。

一、核心功能与设计定位

作为单向TVS器件,KSMAJ15A-E3/61的核心设计逻辑是**“常态高阻、瞬态低阻”**:正常工作时处于高阻态,不影响电路运行;当异常过压脉冲到来时,能在纳秒级时间内击穿导通,将电压钳位至安全范围,同时吸收脉冲能量。其定位针对12V/5V等低电压系统,平衡防护性能与安装空间需求。

二、关键电气参数解析

1. 电压类核心参数

  • 反向截止电压(Vrwm):15V
    电路正常工作时可承受的最大反向直流电压,要求被保护电路供电电压≤15V(如12V车载系统、5V消费电子),避免器件常态击穿。
  • 击穿电压(Vbr):16.7V
    反向偏置下的典型击穿电压,比Vrwm高1.7V,确保电压波动(如电源纹波)不会触发误击穿,保证电路稳定性。
  • 钳位电压(Vc):24.4V
    脉冲电流通过时的最大电压,是防护效果的关键——需低于被保护元件的耐压(如多数MCU耐压≤30V),可有效避免后端器件损坏。

2. 电流与功率参数

  • 峰值脉冲电流(Ipp):16.4A
    单次可承受的最大脉冲电流峰值(对应8/20μs标准浪涌波形),能应对近距离雷击、大功率开关浪涌等中等强度干扰。
  • 峰值脉冲功率(Ppp):400W
    由Vc×Ipp计算得出(24.4V×16.4A≈400W),代表单次可吸收的最大脉冲能量,满足多数低电压电路防护需求。
  • 反向漏电流(Ir):1μA
    Vrwm(15V)下的反向漏电流,数值极小,不会增加电路额外功耗或干扰。

3. 温度适应性

  • 工作温度范围:-55℃~+150℃
    覆盖工业级宽温要求,可在极端环境(如户外设备、汽车发动机舱)稳定工作,可靠性符合恶劣场景需求。

三、封装与安装特性

采用SMA表面贴装封装,符合行业标准尺寸(典型值:长2.4mm×宽1.6mm×高1.0mm),具备三大优势:

  1. 小体积高密度:适配智能手机、小型工业控制器等对PCB空间严格要求的产品;
  2. 自动化兼容:支持常规SMT贴装设备,生产效率高;
  3. 焊接可靠:引脚设计合理,回流焊(≤260℃/30s)、波峰焊(≤240℃/5s)工艺均能保证质量,符合RoHS环保标准。

四、典型应用场景

结合参数特性,KSMAJ15A-E3/61适用于以下场景:

  1. 消费电子:智能手机USB充电口、音频接口、SIM卡槽的ESD及浪涌防护;
  2. 工业控制:PLC、温度/压力传感器12V供电电路的过压防护;
  3. 汽车电子:车载显示屏、传感器模块的12V系统瞬态防护;
  4. 通信设备:小型路由器、交换机电源输入及信号端口防护。

五、选型与使用注意事项

  1. 电压匹配:被保护电路正常电压需≤15V,避免器件长期击穿;
  2. 钳位校验:确认被保护元件耐压≥24.4V,否则需并联多个器件降低钳位电压;
  3. 极性安装:单向TVS需反向偏置接电源端,接反会导致防护失效;
  4. 散热设计:高频脉冲场景需增加PCB散热铜箔,避免器件过热;
  5. 焊接规范:严格控制焊接温度与时间,防止封装损坏。

综上,KSMAJ15A-E3/61凭借宽温适应性、高脉冲耐受能力与小封装优势,成为低电压电路瞬态防护的高性价比选择,可有效提升电子设备的抗干扰能力与可靠性。

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