WMSIC Electronic Components

FUXINSEMI BAT54CW

ModelBAT54CW
PackageSOT-323(SC-70)
BrandFUXINSEMI
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
FUXINSEMI BAT54CW
Type
FUXINSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
FUXINSEMI
Electronic Component
BAT54CW
Electronic Component
1
Package
SOT-323(SC-70)
Electronic Component
Schottky Diode
Electronic Component
0.031g
Electronic Component
1
Electronic Component
BM0265133037
Current
200mA
Diode
1
Current(Ir)
2uA
(Vf)
1V@100mA
Electronic Component
Electronic Component
Electronic Component
3000
Voltage Rating(Vr)
30V

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

BAT54CW 肖特基二极管产品概述

一、产品基本属性

BAT54CW是富芯森美(FUXINSEMI) 推出的一款肖特基二极管,采用1对共阴极配置,封装形式为SOT-323(SC-70) 超小型表面贴装封装。作为低压小电流应用的核心器件,其设计兼顾低损耗、高频响应与小型化需求,广泛适配消费电子、小型电源等领域的电路设计。

二、核心电气参数详解

BAT54CW的参数针对低压场景做了针对性优化,关键指标及意义如下:

  • 正向压降(Vf):1V@100mA(典型值)。相比部分传统硅二极管,该压降可有效降低导通损耗,减少电路发热,提升能效(尤其在小电流场景下优势明显)。
  • 直流反向耐压(Vr):30V。满足大多数低压直流电路的反向电压耐受需求,避免因反向过压导致器件击穿。
  • 连续整流电流(If):200mA。为器件长期连续工作的电流上限,适配小功率负载的整流、续流场景。
  • 反向漏电流(Ir):2uA(典型值)。漏电流极低,可减少反向待机损耗,提升电路静态稳定性。
  • 非重复峰值浪涌电流(Ifsm):600mA。可承受单次瞬间过流冲击(需注意:非重复特性意味着不能重复施加该级别的浪涌电流),增强电路对突发脉冲的耐受能力。

三、封装与引脚配置

BAT54CW采用SOT-323(SC-70) 封装,尺寸约为2.9×1.6×1.1mm(典型值),属于超小型表面贴装封装,可显著节省PCB布局空间,适配高密度电路设计(如便携式设备)。

引脚为共阴极结构:两个肖特基二极管的阴极共用一个引脚,阳极分别引出。具体引脚定义(参考标准SOT-323封装):

  • 引脚1:二极管1的阳极
  • 引脚2:公共阴极
  • 引脚3:二极管2的阳极

该配置无需额外设计阴极连接电路,可简化布线,适合双二极管协同工作的场景(如钳位、反向保护)。

四、典型应用场景

结合参数特性,BAT54CW主要应用于低压小电流电子电路,典型场景包括:

  1. 低压整流电路:如小型USB充电器、电池充电模块的低压端整流,利用低正向压降减少能量损耗。
  2. 开关电源续流:在高频小功率开关电源(如5V/1A以下)中作为续流二极管,其快速开关特性可降低开关损耗。
  3. 信号钳位保护:用于数字/模拟信号的峰值钳位(如限制信号电压在安全范围),避免后级器件损坏。
  4. 反向过压保护:电池供电设备中防止电源反接损坏负载(共阴极配置可实现双路反向保护)。
  5. 消费电子接口保护:手机、平板的充电/耳机接口的静电/过压保护,适配小型化设计需求。

五、关键优势分析

BAT54CW在同类器件中具备以下核心优势:

  1. 低损耗高效能:1V正向压降可降低导通损耗,尤其在100mA以内小电流场景下能效提升明显。
  2. 高频响应优异:肖特基二极管开关速度远快于普通硅二极管,可适配10MHz以上高频电路,满足高速开关需求。
  3. 小型化设计:SOT-323封装体积小,适合智能手环、蓝牙耳机等便携式设备的高密度PCB布局。
  4. 稳定可靠:反向漏电流仅2uA(静态漏损极小),30V反向耐压与600mA浪涌耐受能力,可应对常见电路波动。
  5. 成本均衡:在保证性能的前提下,适配中小批量生产需求,降低终端产品物料成本。

六、使用注意事项

为确保可靠工作,需注意以下要点:

  1. 电压限制:避免施加超过30V的直流反向电压,交流峰值电压需控制在耐压范围内。
  2. 电流管控:连续工作电流≤200mA,单次浪涌电流≤600mA且不可重复施加,防止过热损坏。
  3. 温度适应性:工作环境温度建议控制在-55℃~+125℃,温度过高会导致反向漏电流增加,需做好散热。
  4. 焊接规范:回流焊峰值温度≤260℃(时间≤10秒),避免热应力损坏器件。
  5. 静电防护:肖特基二极管对静电敏感,操作时需佩戴防静电手环、使用防静电工作台。

BAT54CW凭借其低损耗、小型化与高可靠性,成为低压小电流电路设计的优选器件,可满足消费电子、小型电源等领域的多样化需求。

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