WMSIC Electronic Components

CJ 1SS389

Model1SS389
PackageSOD-523
BrandCJ
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+

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Technical data

Product details

19 specifications

Core information

Product name
CJ 1SS389
Type
CJ
Minimum package
8000

Technical parameters

Electronic Component
CJ
Electronic Component
1SS389
Electronic Component
1
Package
SOD-523
Electronic Component
Schottky Diode
Electronic Component
0.005g
Electronic Component
1
Electronic Component
BM0264889863
Current
100mA
Diode
1
Current(Ir)
20uA@10V
(Vf)
500mV@100mA
Electronic Component
40℃~+125℃
Electronic Component
8000
Voltage Rating(Vr)
10V
Surge Current (Ifsm)
1A

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

CJ 1SS389 肖特基二极管产品概述

一、产品基本信息

1SS389是江苏长电科技(CJ品牌)推出的小信号肖特基二极管,核心定位为低功耗、高频及超小型化电子设计场景。其采用SOD-523封装(超小型表面贴装封装,典型尺寸约1.6mm×0.8mm×0.5mm),体积仅为常规二极管的1/5左右,可有效节省PCB布局空间,适配便携设备、微型电子模块等高密度设计需求。

二、核心电气参数解析

该二极管的参数围绕“小电流、低损耗、高频适配”优化,关键参数及意义如下:

  • 正向压降(Vf):500mV@100mA(远低于普通硅二极管的0.6~0.7V,正向导通损耗降低20%以上,适合低功耗电路);
  • 直流反向耐压(Vr):10V(满足3.3V/5V低压系统的反向耐压需求,避免反向击穿);
  • 连续整流电流(If):100mA(额定连续工作电流,适配小电流信号处理或电源续流场景);
  • 反向漏电流(Ir):20μA@10V(反向漏电流极小,静态功耗仅为常规硅二极管的1/10,信号完整性更好);
  • 非重复峰值浪涌电流(Ifsm):1A(能承受瞬间脉冲电流冲击,比如开机瞬间、电磁干扰尖峰);
  • 工作结温范围:-40℃~+125℃(宽温度覆盖工业级、消费电子的高低温环境,如车载低温启动、户外设备高温工作)。

三、典型应用场景

1SS389的参数特性使其在多个细分场景具备独特优势,典型应用包括:

1. 便携电子电源管理

  • 智能手机、智能手环的DC-DC转换器续流(低VF降低转换损耗,延长电池续航);
  • 蓝牙耳机、智能手表的电池充放电保护(小电流下的电压钳位,避免过充过放)。

2. 高频信号处理

  • 射频前端电路的信号检波(肖特基开关速度快,适配100MHz以上高频信号提取);
  • 时钟电路的信号整流(低VF保证时钟信号不失真,避免误触发)。

3. 传感器接口调理

  • 低功耗传感器(温度、压力传感器)的输出信号整流(提取微弱信号,避免硅二极管的压降损耗);
  • IoT模块的传感器信号钳位(防止静电或过压损坏传感器)。

4. 低压过压保护

  • 3.3V/5V系统的简单过压防护(配合电阻电容实现,反向耐压10V适配低压场景)。

四、封装与可靠性特点

  • SOD-523封装优势:表面贴装工艺兼容自动化生产,无引脚设计减少焊接缺陷;超小体积适配0402级PCB布局,适合智能穿戴、微型IoT模块等产品。
  • 宽温可靠性:通过-40℃~+125℃高低温循环测试,能在极端环境下稳定工作(如车载电子、户外监测设备)。
  • 抗浪涌能力:1A非重复浪涌电流可应对电源上电瞬间的尖峰电流,提升电路抗干扰性。

五、选型与使用注意事项

  1. 场景匹配:仅适用于低压小电流场景(反向电压≤10V、连续电流≤100mA),避免高电压(如220V交流)、大电流(如1A以上)应用;
  2. 散热考虑:连续工作在100mA时需保证PCB焊盘散热(建议焊盘面积≥2mm²),避免结温超过125℃;
  3. 焊接工艺:采用回流焊工艺(温度≤260℃,时间≤10s),避免手工焊接时温度过高损坏器件。

总结:CJ 1SS389是一款专为低压小信号设计的肖特基二极管,凭借低VF、小体积、宽温特性,成为便携电子、高频电路、传感器接口等场景的优选器件,适配高密度、低功耗的现代电子设计需求。

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