WMSIC Electronic Components

FUXINSEMI DSF1D

ModelDSF1D
PackageSOD-123
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
FUXINSEMI DSF1D
Type
FUXINSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
FUXINSEMI
Electronic Component
DSF1D
Electronic Component
1
Package
SOD-123
Electronic Component
Fast Recovery / High-Efficiency Diode
Electronic Component
0.036g
Electronic Component
1
Electronic Component
BM0228045244
Current
1A
Diode
1
Current(Ir)
5uA
(Vf)
950mV@1A
Electronic Component
55℃~+150℃
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.

DSF1D 产品概述

DSF1D 是 FUXINSEMI(富芯森美)推出的一款独立式快恢复高效率二极管,采用 SOD-123 小封装,面向开关电源、逆变器、整流与续流保护等中高电压、高频率功率电子应用。器件在-55℃至+150℃的工作结温范围内稳定工作,兼顾耐压、开关速度与低正向压降,适合体积受限但对效率和可靠性有要求的场合。

一、主要特点

  • 品牌/型号:FUXINSEMI(富芯森美) / DSF1D
  • 封装:SOD-123,体积小、适用于贴片工艺
  • 额定整流电流:1 A(连续)
  • 直流反向耐压 Vr:200 V
  • 正向压降 Vf:0.95 V(在 If = 1 A 条件下)
  • 反向恢复时间 Trr:35 ns(快恢复特性)
  • 工作结温范围:-55 ℃ ~ +150 ℃
  • 独立式封装,极性标识清晰(阴极通常有条形标记)

二、电气参数解析与设计要点

  1. 正向损耗:在 If = 1 A 时 Vf ≈ 0.95 V,对应的瞬时功耗约为 0.95 W。长期使用时需考虑结温上升及散热,避免超过最大结温。
  2. 反向恢复:Trr = 35 ns 属于快恢复等级,适合开关频率较高的应用,可降低开关损耗和电磁干扰(EMI)生成。
  3. 耐压与替代方案:200 V 反向耐压使其可替代低压肖特基二极管在较高电压环境下的应用;相比同类高压肖特基,DSF1D 在耐压和恢复特性间取得平衡。
  4. 温度影响:Vf 与 Trr 会随结温变化,设计时应留有裕量,推荐在数据手册给定条件下验证关键点。

三、封装与热管理建议

SOD-123 封装体积小,但散热能力有限。设计 PCB 时建议:

  • 在焊盘下方和周围增加铜箔面积,必要时使用过孔连到背面大铜箔以提升散热。
  • 保持良好焊接质量,避免冷焊或过热造成封装应力。
  • 若在接近1 A 连续工作的场合,评估结-环境热阻并进行热仿真,必要时采取散热片或扩大铜箔。
  • 安装时注意极性标识,阴极通常用带形标记表示。

四、典型应用场景

  • 开关电源(SMPS)次级整流与续流二极管
  • DC-DC 转换器与电池充放电保护电路
  • 电机驱动的续流与保护线路
  • 逆变器、太阳能逆变或车载电源系统中对高压耐受和快速恢复有需求的场合
  • LED 驱动与小功率稳压电路

五、选型建议与对比

  • 需要更低正向压降且工作电压较低时,可考虑肖特基二极管;但在 200 V 级别的高压应用,DSF1D 提供了更可靠的耐压与快恢复折中方案。
  • 对于对开关速度有更高要求的电路,可选用 Trr 更短的超快速二极管,但通常会牺牲正向压降或耐压特性。
  • 在空间受限且需表贴装配的产品中,SOD-123 的体积优势明显;若系统热量更大或电流更高,建议挑选更大散热能力的封装或并联使用(并联应注意均流问题)。

总结:DSF1D 以其 200 V 耐压、0.95 V @1A 的低 Vf 和 35 ns 的快恢复时间,适合体积紧凑且需兼顾效率与耐压的中高频功率应用。合理的 PCB 热设计与预计工况下的热分析是保证长期可靠性的关键。若需器件封装图、焊盘尺寸或典型波形,请提供进一步信息以便给出更详细的工程资料。

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