WMSIC Electronic Components

WILLSEMI WSB5558N-2/TR WSB5558N

ModelWSB5558N-2/TR
PackageDFN1006-2L
BrandWILLSEMI
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
WILLSEMI WSB5558N-2 / TR
Type
WILLSEMI
Minimum package
10000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WILLSEMI
Electronic Component
WSB5558N-2/TR
Electronic Component
1
Package
DFN1006-2L
Electronic Component
Schottky Diode
Electronic Component
0.01g
Electronic Component
1
Electronic Component
BM0227764758
Current
100mA
Diode
1
Current(Ir)
30uA@30V
(Vf)
450mV@100mA
Electronic Component
Electronic Component
Electronic Component
10000
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.

WSB5558N-2/TR 产品概述

一、产品简介
WSB5558N-2/TR 是 WILLSEMI(韦尔)推出的一款独立式肖特基整流二极管,采用紧凑型 DFN1006-2L 封装(贴片、低高度),并以卷带盒装(TR)供给,适合自动贴片生产。其关键电气参数为:正向压降 Vf = 450 mV(IF = 100 mA),额定整流电流 100 mA,直流反向耐压 VR = 30 V,反向漏电流 Ir = 30 µA(VR = 30 V),非重复峰值浪涌电流 Ifsm = 1 A。该器件面向低功耗、空间受限的移动与便携类电子产品,以及信号与电源路径中的保护与整流应用。

二、主要特点

  • 低正向压降:450 mV @ 100 mA,在低电流工作点可显著降低导通损耗,提高效率。
  • 低反向漏电:30 µA @ 30 V,适合对静态功耗敏感的电池供电系统。
  • 紧凑封装:DFN1006-2L 占板面积小、热阻低,便于高密度 PCB 布局。
  • 良好浪涌能力:非重复峰值浪涌电流 1 A,可承受短时启动或突发电流。
  • 贴装友好:TR(Tape & Reel)包装,兼容 SMT 自动贴装流程。

三、电气与热特性要点

  • 正向导通:肖特基结构保证在小电流时表现出更低的 Vf,相较于普通整流二极管更适合低压差的电源路径。
  • 反向特性:在较高反向电压(最高 30 V)下泄漏电流仍然控制在微安级,但在高温条件下漏电会显著增加,设计时需考虑温漂影响。
  • 浪涌与稳态能力:额定整流电流 100 mA,短时冲击能力 1 A,可满足常见的信号钳位和低功率整流需求。对热量积累敏感,需适当散热处理以维持长期可靠性。

四、典型应用场景

  • 电源反向保护(低压电池供电设备)
  • 电源 OR-ing 与低压降整流(便携式充电器、移动电源)
  • 信号线保护与反向钳位(I/O 端口、通信模块)
  • 二极管耦合、简易稳压或采样路径(低功耗传感器节点)
  • 开关电源的次级整流(低电流分支)

五、封装与 PCB 布局建议

  • DFN1006-2L 为 2 引脚微小封装,焊盘尺寸与热沉铜箔面积直接影响热阻与可靠性。建议在器件下方或周围增加局部铜箔以扩散热量,并通过热过孔与底层铜层连接以提升散热能力。
  • 走线应尽量短且宽,减少寄生电感与额外压降。若用于整流或保护路径,应保证回流电流路径畅通。
  • 推荐采用标准回流焊工艺,遵循厂方给出的焊接温度曲线与潮湿敏感等级处理规范,避免长期高温或过度回流次数。

六、使用与采购注意事项

  • TR 表示卷带包装,适合 SMT 自动化贴装;单件购买或小批试样请向授权分销商询价。
  • 在高温工作环境下,反向漏电随温度上升可能增大,关键电路应做适当冗余或热管理设计。
  • 使用前请查阅 WILLSEMI 提供的完整数据手册,确认所有极限值、典型曲线和可靠性指标,按推荐的 PCB 布局与焊接规范操作。

七、结语
WSB5558N-2/TR 以其低正向压降、微安级漏电与微型 DFN 封装,为对尺寸和功耗敏感的低功率电子产品提供了高性价比的肖特基整流解决方案。适用于反向保护、低压整流与信号钳位等多种场合,是便携电子和消费类设备中常用的一款实用器件。欲获取完整电气特性曲线与封装尺寸,请参考 WILLSEMI 正式数据手册。

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