WMSIC Electronic Components

FUXINSEMI ST2045L

ModelST2045L
PackageTO-277B
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 ST2045L
Type
FUXINSEMI
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
FUXINSEMI
Electronic Component
ST2045L
Electronic Component
1
Package
TO-277B
Electronic Component
Schottky Diode
Electronic Component
0.164g
Electronic Component
1
Electronic Component
BM0265332211
Current
20A
Diode
Electronic Component
Current(Ir)
200uA@45V
(Vf)
470mV@20A
Electronic Component
55℃~+150℃
Electronic Component
Electronic Component
Electronic Component
5000

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

ST2045L 肖特基二极管产品概述

ST2045L是富芯森美(FUXINSEMI)推出的一款独立式肖特基整流二极管,针对低压大电流场景的低损耗、高可靠性需求优化设计,采用TO-277B封装,可广泛应用于电源适配器、汽车电子、工业控制等领域。

一、产品基本属性

ST2045L属于低压大电流肖特基二极管,区别于普通硅整流管,其核心优势在于正向压降低、开关速度快。产品采用独立式封装结构(无并联/串联组合),便于电路灵活布局;品牌为国产厂商富芯森美,兼具性能可靠性与成本竞争力;封装形式为TO-277B(表面贴装型),兼顾散热效率与小型化需求。

二、核心电气性能参数解析

ST2045L的参数精准匹配低压大电流应用的核心痛点,关键参数及意义如下:

  1. 正向压降(Vf):470mV@20A
    肖特基二极管的核心优势——大电流下仍保持低压降(普通硅管20A时压降≥0.8V),可显著降低整流损耗,提升电源转换效率(较硅管提升3%~5%),减少产品发热。
  2. 直流反向耐压(Vr):45V
    满足12V、24V等低压系统的反向耐压需求,可应对电路瞬态电压波动(如电源开关瞬间的尖峰电压),避免反向击穿。
  3. 连续整流电流(If):20A
    持续承载20A电流的能力,支持中小功率电源的主流输出规格(如12V/20A适配器、24V/10A车载电源)。
  4. 反向漏电流(Ir):200uA@45V
    低漏电流设计减少反向损耗,提升电路稳定性,尤其适合对效率要求较高的场景(如快充底座、服务器电源辅助整流)。
  5. 非重复峰值浪涌电流(Ifsm):280A
    可承受开机瞬间、负载突变带来的大电流冲击,避免器件损坏,提升系统可靠性(如汽车启动时的电源冲击)。
  6. 工作结温范围:-55℃~+150℃
    宽温范围覆盖工业级(-40℃+85℃)与汽车级(-40℃+125℃)应用环境,可在极端温度下稳定工作。

三、封装与可靠性设计

ST2045L采用TO-277B封装,该封装具有以下设计优势:

  • 散热效率高:封装材料(陶瓷+塑料复合)与引脚设计优化了热传导路径,可快速导出肖特基工作时的热量,避免结温过高;
  • 小型化适配:表面贴装结构(尺寸约7.6mm×6.4mm)适合高密度电路设计,满足电源适配器、车载电子等产品的小型化需求;
  • 机械可靠性:封装强度高,可应对振动、冲击等环境应力(如工业现场的机械振动、汽车行驶中的颠簸),提升产品使用寿命。

四、典型应用场景

结合参数特点,ST2045L适用于以下核心场景:

  1. 低压直流电源适配器
    如12V/20A、24V/10A等规格的适配器,低正向压降减少发热,280A浪涌能力应对开机冲击,提升产品效率与稳定性。
  2. 汽车电子辅助电源
    车载充电器、车灯驱动电路、车载信息系统电源等,-55℃~+150℃宽温范围适配车载环境的温度变化,45V反向耐压满足12V系统的瞬态电压要求。
  3. 工业控制设备整流模块
    PLC、伺服驱动器、变频器的辅助电源,低漏电流提升电路稳定性,宽温范围适应工业现场的极端温度(如北方户外控制柜、南方高温车间)。
  4. 消费电子大功率设备
    电竞主机电源、100W快充底座、户外移动电源等,TO-277B封装适配小型化设计,低损耗减少散热片成本。

五、产品优势与适用价值

ST2045L的核心价值在于平衡性能、可靠性与成本:

  • 低损耗设计降低电源转换损耗,减少散热片成本,提升产品续航(如车载充电器的热管理优化,避免高温死机);
  • 宽温与高浪涌能力提升系统可靠性,减少售后维护成本(如工业设备的故障停机率);
  • 国产品牌与TO-277B封装降低采购与设计成本,适合批量应用(如电源厂商的标准化选型)。

综上,ST2045L是一款针对低压大电流场景优化的高性价比肖特基二极管,可有效解决传统硅管损耗高、发热大的痛点,满足电源、汽车、工业等领域的多样化需求。

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