WMSIC Electronic Components

SHIKUES SK120WA

ModelSK120WA
PackageSOD-123FL
BrandSHIKUES
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
SHIKUES SK120WA
Type
SHIKUES
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SHIKUES
Electronic Component
SK120WA
Electronic Component
1
Package
SOD-123FL
Electronic Component
Schottky Diode
Electronic Component
0.041g
Electronic Component
1
Electronic Component
BM0230143778
Current
1A
Diode
Electronic Component
Current(Ir)
200uA@120V
(Vf)
850mV@1A
Electronic Component
55℃~+125℃
Electronic Component
Electronic Component
Electronic Component
3000

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

SK120WA 产品概述

一、产品简介

SK120WA 是 SHIKUES(时科)推出的一款独立式肖特基整流二极管,采用 SOD-123FL 小型封装,面向通用整流和开关电源应用。该器件在 1A 工作电流下具有较低的正向压降和较好的浪涌承受能力,适用于需要低损耗、快速恢复及体积受限的电源设计与保护电路。

二、主要参数

  • 器件类型:肖特基二极管(独立式)
  • 型号:SK120WA
  • 正向压降 (Vf):850 mV @ If = 1A
  • 直流反向耐压 (Vr):120 V
  • 额定整流电流(连续):1 A
  • 反向漏电流 (Ir):200 μA @ Vr = 120 V
  • 非重复峰值浪涌电流 (Ifsm):25 A(一次性峰值冲击能力)
  • 工作结温范围:-55 ℃ ~ +125 ℃
  • 封装:SOD-123FL
  • 品牌:SHIKUES(时科)

三、封装与机械特性

SOD-123FL 是一种小型表面贴装封装,适合空间受限的电路板设计。该封装便于自动贴装和回流焊工艺,适合批量生产。SOD-123FL 的引脚布局和热路径设计对降低结到环境的热阻有帮助,但在 1A 等级的持续功耗场景下仍需关注 PCB 散热(例如适当加铜箔、热过孔等)。

四、关键特性与优势

  • 低正向压降:在 1A 条件下 Vf ≈ 0.85 V,较常规硅整流器有更低的导通损耗,有利于提高整机效率并降低发热。
  • 高反向耐压:120 V 的反向耐压使其可用于中等电压档位的整流与保护。
  • 较低浪涌损伤风险:25 A 的非重复峰值浪涌电流能力,可抵抗开机或短时脉冲造成的冲击电流(需按脉冲宽度和热极限参考完整数据手册)。
  • 小型化封装:SOD-123FL 节省 PCB 面积,适合便携与高密度电源布局。
  • 宽温度适应性:-55 ℃ 至 +125 ℃ 的结温范围,满足工业级温度环境需求。

五、典型应用场景

  • 开关电源输出整流与续流(buck/boost 等)
  • 二次侧低损耗整流器件
  • 反向电压保护与电源反向接入防护
  • 电源 OR-ing 电路与冗余供电管理
  • 便携式设备、通信设备、车载电子(在满足温度与漏电规范下)等空间受限场合

六、设计注意事项

  • 热管理:尽管 Vf 较低,但在连续 1A 工作条件下仍会产生热量。建议在 PCB 设计时增大焊盘铜厚、引入热过孔或散热铜箔,以降低结温并提高可靠性。
  • 反向漏电:在 Vr=120V 时 Ir≈200 μA,若应用对漏电流敏感(例如电池供电或高阻检测电路),需评估漏电对系统的影响,或考虑漏电更低的器件。
  • 温度对参数的影响:肖特基二极管的正向压降、漏电流会随温度上升而变化,设计时应留有裕量并参考完整温度特性曲线。
  • 浪涌能力:Ifsm = 25A 为非重复峰值,适用于短时冲击。若电路中存在频繁浪涌或长时间短路情形,应采用额外保护(如限流电阻、保险丝或热关断方案)。

七、可靠性与环境

SK120WA 的工作结温范围为 -55 ℃ 至 +125 ℃,满足大多数工业级要求。SOD-123FL 封装适用于回流焊工艺,便于 SMT 产线可靠生产。为确保长期可靠性,建议遵循制造商的回流曲线、焊接建议以及储存/干燥条件。

八、选型与采购建议

在选型时,除关注 Vf、Vr、Ifsm 等关键参数外,还应参考完整的数据手册中的温度特性曲线、最大额定值、浪涌脉冲宽度条件和封装尺寸图。对于对漏电或更低 Vf 要求更高的应用,可比较其他肖特基器件或低 Vbr 的替代型号。关于库存与量产,建议与 SHIKUES(时科)或授权分销商确认包装形式与最小采购量。

如需更详细的电气特性曲线、封装尺寸和焊接工艺建议,请索取 SK120WA 的完整数据手册以作最终设计验证。

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