WMSIC Electronic Components

KUU KSD103AX

ModelKSD103AX
PackageSOD-523
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
KUU KSD103AX
Type
KUU
Minimum package
8000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
KUU
Electronic Component
KSD103AX
Electronic Component
1
Package
SOD-523
Electronic Component
Schottky Diode
Electronic Component
0.022g
Electronic Component
1
Electronic Component
BM0264356204
Current
350mA
Diode
Electronic Component
Current(Ir)
5uA@30V
(Vf)
600mV@200mA
Electronic Component
Electronic Component
Electronic Component
8000
Voltage Rating(Vr)
40V

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

KSD103AX肖特基二极管产品概述

KSD103AX是KUU品牌推出的独立式低正向压降肖特基二极管,采用超小型SOD-523表面贴装封装,专为低压小电流场景的电源管理、信号保护等需求设计,兼具低功耗、高密度集成和高可靠性特点。

一、产品核心定位

该器件属于低压小功率肖特基二极管,核心定位是满足三类典型场景需求:

  1. 电池供电设备的低功耗设计(如智能穿戴、蓝牙耳机),降低导通损耗以延长续航;
  2. 高密度PCB布局的小型化需求(如便携电子、微型电源模块);
  3. 兼顾反向耐压与浪涌承受能力,提升电路抗干扰和突发电流可靠性。

二、关键电气参数解析

KSD103AX的核心参数直接支撑其应用场景,关键指标及实际意义如下:

  1. 正向压降(Vf):600mV@200mA
    远低于普通硅二极管(典型700mV以上),导通损耗显著降低——以200mA持续电流为例,每支器件仅消耗120mW功耗,适合对功耗敏感的电池系统。
  2. 直流反向耐压(Vr):40V
    覆盖5V/12V低压电路的反向耐压需求,可满足消费电子、小型工业设备的电源防护场景。
  3. 持续整流电流(IF):350mA
    稳定工作电流适配1W以内的小功率输出(如0.5A@5V电源),实际使用建议降额至250mA以内(约70%额定值),避免过热老化。
  4. 反向漏电流(Ir):5uA@30V
    低漏电流设计可减少静态功耗——以30V反向电压为例,每支器件仅漏5uA电流,避免电池在待机状态下的额外放电。
  5. 非重复峰值浪涌电流(Ifsm):2A
    可承受瞬间脉冲电流冲击(如USB插拔、开关瞬态),避免突发电流损坏器件,提升电路可靠性。

三、封装与物理特性

KSD103AX采用SOD-523表面贴装封装,物理特性适配小型化需求:

  • 封装尺寸紧凑(典型1.6mm×0.8mm×0.6mm),占板面积仅1.28mm²,支持高密度PCB设计;
  • 独立式配置:单个二极管封装,使用灵活——可并联提升电流容量(如两支并联达700mA),或串联提升耐压(如两支串联达80V);
  • 表面贴装工艺:兼容回流焊、波峰焊,适合自动化生产,降低焊接成本与虚焊风险。

四、典型应用场景

结合参数特点,KSD103AX的核心应用场景包括:

  1. 便携电子电源管理:智能手表、蓝牙耳机、智能手环的充电电路续流二极管,低Vf减少充电损耗;
  2. 小功率LED驱动:键盘背光、指示灯等小型LED灯串的整流/续流,保证LED亮度稳定且不额外增加功耗;
  3. 低压电源模块:5V/12V小型开关电源的输出整流,350mA电流满足0.5A以内的输出需求;
  4. 信号保护电路:音频、传感器等低电压信号的过压钳位,40V耐压可有效防护瞬态过压;
  5. 电池防反接/续流:移动电源、便携式充电器的防反接二极管,2A浪涌电流可承受瞬间插拔冲击。

五、性能优势总结

相比同类低压肖特基二极管,KSD103AX的核心优势:

  • 低功耗:600mV正向压降降低导通损耗,延长电池续航30%以上(对比普通硅二极管);
  • 小型化:SOD-523封装适配便携设备的空间限制,比SOT-23封装缩小40%占板面积;
  • 高可靠性:2A浪涌电流承受能力与5uA低漏电流,提升电路稳定性,降低售后返修率;
  • 灵活性:独立式封装支持并联/串联扩展,适配不同电路拓扑(如全桥整流、续流回路)。

六、选型与使用注意事项

  1. 电流降额:持续工作电流建议不超过250mA,避免长期过载导致器件老化;
  2. 耐压余量:实际电路反向电压需低于32V(80%额定耐压),防止击穿;
  3. 温度适配:肖特基二极管反向漏电流随温度升高而增加,建议工作环境温度控制在0-70℃(商用级);
  4. 焊接工艺:回流焊峰值温度需≤245℃(遵循IPC标准),波峰焊时间≤3秒,避免过热损坏封装。

KSD103AX通过优化参数与封装,精准匹配低压小电流场景的需求,是便携电子、小型电源设计的高性价比选择。

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