WMSIC Electronic Components

CBI BAS40-04T BAS40

ModelBAS40-04T
PackageSOT523
BrandCBI
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 Option 64559

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
CBI BAS40-04T
Type
CBI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CBI
Electronic Component
BAS40-04T
Electronic Component
1
Package
SOT523
Electronic Component
Schottky Diode
Electronic Component
0.024g
Electronic Component
20
Electronic Component
BM0265834827
Current
200mA
Diode
1
Current(Ir)
200nA@30V
(Vf)
1V@40mA
Electronic Component
Electronic Component
Electronic Component
3000
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.

BAS40-04T 高速开关二极管产品概述

一、产品定位与基本属性

BAS40-04T是国内半导体品牌CBI(创基) 推出的高速小信号开关/整流二极管,聚焦“小电流、低功耗、高频开关”核心需求,属于高频应用场景下的基础器件。该器件适配便携式电子、消费电子及部分工业控制领域的高密度电路设计,是替代传统1N4148等常规二极管的高性价比升级选项,尤其适合对空间、功耗敏感的小型化产品。

二、核心电性能参数解析

器件参数精准匹配高频小电流应用,关键参数及实际意义如下:

  1. 正向压降(Vf):1V@40mA
    在典型工作电流40mA下,正向导通压降稳定在1V,一致性优于部分同类器件(如1N4148在40mA下Vf约0.85V但波动较大),可避免多器件串联时的压降偏差,适合精密电源电路(如电池供电设备的升压模块)。
  2. 直流反向耐压(Vr):40V
    最大可承受40V直流反向电压,覆盖5V/12V/24V等主流低压系统,无需额外并联高压保护器件,简化电路设计(如手机充电器的EMI滤波支路)。
  3. 连续整流电流(If):200mA
    连续工作的最大正向电流为200mA,可满足常规小负载需求(如LED偏置电流、传感器信号调理),且在额定电流下长期工作无热失控风险。
  4. 反向漏电流(Ir):200nA@30V
    反向漏电流仅200nA(30V反向电压下),属于低漏电流设计,可大幅降低电路静态功耗——以10只并联为例,总静态漏电仅2μA,适合电池供电的便携设备(如蓝牙耳机、智能手环),延长续航时间。
  5. 非重复峰值浪涌电流(Ifsm):600mA
    可承受600mA的瞬间脉冲电流(非重复),比常规小信号二极管(如1N4148的Ifsm约400mA)提升50%,能有效应对电路启动瞬间或外部电磁干扰带来的浪涌冲击,提升系统可靠性。

三、封装特性与环境适应性

BAS40-04T采用SOT-523封装,是当前小型化电子设备的主流封装之一,核心特点:

  • 尺寸紧凑:封装尺寸约1.6mm×1.6mm×0.8mm,相比DIP-2封装体积缩小80%以上,可显著降低PCB面积,适配高密度集成设计(如智能手机主板、智能手表模块);
  • 工艺兼容性:符合表面贴装工艺要求,支持高速贴片机批量生产(贴装速度可达10000片/小时),降低人工成本;
  • 环境可靠性:封装采用耐高温环氧树脂,可承受260℃以下焊接温度(焊接时间≤3秒),且具备防潮(湿度≤85%)、抗振动(10G加速度)性能,满足商业级温度范围(-55℃~125℃),适用于大部分室内外应用场景。

四、典型应用场景

结合器件参数特性,核心应用场景包括:

  1. 便携电子电源管理
    用于微功耗电源的整流、续流或反向防护,如蓝牙耳机的充电电路、智能手环的电池保护模块——低Ir减少静态漏电,小封装节省空间。
  2. 高速信号切换
    在2.4G无线模块、数字逻辑电路中作为开关器件,实现信号通断(如WiFi模块的天线切换),高速特性避免信号失真,提升传输效率。
  3. 消费电子辅助电路
    如手机充电器的EMI滤波、电视遥控器的信号检波,200mA连续电流满足小负载需求,40V反向耐压覆盖12V/24V系统。
  4. 工业控制低电流电路
    用于PLC输入/输出接口、传感器信号调理(如温度传感器的信号隔离),抗浪涌能力应对工业现场的电磁干扰,提升系统稳定性。

五、选型优势与注意事项

  1. 选型优势
    • 性价比高:CBI具备成熟的生产工艺,器件一致性好(Vf波动≤0.05V),价格优于进口同类产品(如东芝SS14);
    • 替换便捷:SOT-523封装兼容主流PCB设计,可直接替换传统大封装器件(如DIP-2的1N4148);
    • 可靠性突出:低漏电流+高浪涌能力,减少电路故障风险(据CBI测试,该器件MTBF可达10^6小时以上)。
  2. 注意事项
    • 工作电流需控制在200mA以内,避免长期过流导致结温过高;
    • 焊接温度不超过260℃,焊接时间≤3秒,避免损伤封装;
    • 若应用场景需更高反向耐压(如48V系统),需选择同系列高压型号(如BAS40-07T,Vr=70V)。

总结
BAS40-04T是一款专为高频小电流场景设计的高速开关二极管,凭借小封装、低功耗、高可靠性等特点,成为便携电子、消费电子及工业控制领域的理想选型。其参数精准匹配低/中压小电流需求,可有效简化电路设计、降低成本,是替代传统常规二极管的优质方案。

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