WMSIC Electronic Components

CBI BSS138

ModelBSS138
PackageSOT23
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 64548

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
CBI BSS138
Type
CBI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CBI
Electronic Component
BSS138
Electronic Component
1
Package
SOT23
Electronic Component
1 N
Type
N
Electronic Component
MOSFET
Electronic Component
0.027g
Electronic Component
50
Electronic Component
BM0265834854
Power Dissipation(Pd)
350mW
Electronic Component
Electronic Component
Electronic Component
3000
Voltage(Vdss)
50V
Capacitor(Ciss)
27pF

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

BSS138 N沟道MOSFET产品概述

BSS138是创基(CBI)推出的小型化N沟道增强型MOSFET,凭借低阈值电压、低导通电阻及紧凑封装等特性,广泛适配低压小功率电子电路。以下从核心信息、电参数、封装特性、典型应用及注意事项展开概述。

一、产品基本识别信息

BSS138的基础参数明确,便于快速识别:

  • 品牌型号:创基(CBI)BSS138
  • 器件类型:单管N沟道增强型MOSFET
  • 封装形式:SOT-23(3引脚表面贴装封装)
  • 基础单元:1个/包装(适配样品测试或小批量应用)

该型号为通用型器件,兼容多数3.3V/5V逻辑电平,是小型电路的常用基础元件。

二、关键电参数特性

BSS138的参数针对低压小功率场景优化,核心指标如下:

1. 耐压与电流额定值

  • 漏源击穿电压(Vdss):50V(最大额定值,需避免漏源电压超限)
  • 连续漏极电流(Id):220mA(室温下连续工作的最大电流,短时间脉冲电流可略高)
  • 峰值脉冲电流(Idp):结合连续值推测,短时间(如10μs)可支持约1A(需参考 datasheet 确认)

2. 导通特性

  • 导通电阻(RDS(on)):6Ω@Vgs=4.5V(低导通电阻,可有效降低导通损耗,220mA时损耗仅约0.29W)
  • 阈值电压(Vgs(th)):1.5V(典型值,确保3.3V/5V逻辑电平下可靠导通,无需额外驱动电路)

3. 功耗与电容特性

  • 最大耗散功率(Pd):350mW(室温下额定功耗,需通过PCB铜箔散热避免超限)
  • 输入电容(Ciss):27pF(栅极与源漏极间总电容,影响开关响应速度)
  • 反向传输电容(Crss):6pF(栅漏极间电容,低Crss有助于提升高频开关特性)

三、封装与物理特性

BSS138采用SOT-23超小型封装,适配高密度电路设计:

  • 尺寸规格:典型尺寸2.9mm×1.6mm×1.1mm(长×宽×高),引脚间距0.95mm
  • 引脚配置:通常为「1-栅极(G)、2-源极(S)、3-漏极(D)」(需以 datasheet 为准)
  • 焊接兼容性:支持回流焊、波峰焊等表面贴装工艺,适配自动化生产

小封装特性使其可集成于智能手环、蓝牙耳机等便携设备,满足小型化需求。

四、典型应用场景

结合参数特性,BSS138的典型应用包括:

1. 低压开关电路

  • 3.3V/5V系统的信号开关(如微控制器输出控制外部负载)
  • 小型负载通断(如LED指示灯、微型继电器线圈)

2. 便携式设备电源管理

  • 电池供电的负载切换(如智能穿戴设备的模块供电控制)
  • 传感器信号调理(低功耗、小尺寸适配微型传感器)

3. 高频开关应用

  • 低频率(≤10MHz)开关电路(低Crss=6pF减少开关损耗)
  • LED闪烁、脉冲调制等简单控制电路

4. 模拟电路辅助

  • 运算放大器输出驱动(低输出电阻提升带载能力)
  • 电压基准缓冲(隔离负载对基准的影响)

五、产品优势与使用注意事项

1. 核心优势

  • 易驱动:1.5V阈值兼容3.3V逻辑,无需额外驱动芯片
  • 低损耗:6Ω导通电阻在小电流下损耗可忽略
  • 高集成:SOT-23封装节省PCB空间,适配高密度设计
  • 快开关:低电容特性提升响应速度,适配高频场景

2. 注意事项

  • 参数限制:不得超过额定值(Vdss≤50V、Id≤220mA、Pd≤350mW)
  • 驱动电压:Vgs需≥1.5V可靠导通,建议驱动电压3V~10V(避免过压)
  • 散热设计:高功耗场景需通过PCB铜箔散热
  • 静电防护:栅极易受静电损坏,焊接/存储需防静电(接地、防静电袋)

总结

BSS138作为低成本高性能的N沟道MOSFET,以低压驱动、小封装、低损耗为核心优势,适配多数低压小功率应用。无论是样品测试还是批量生产,均能满足小型化、低功耗电路的需求,是电子工程师常用的基础器件之一。

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