WMSIC Electronic Components

TDD SS24

ModelSS24
PackageSMA
BrandTDD
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 Option 171426

Available for RFQ

Technical data

Product details

13 specifications

Core information

Product name
TDD SS24
Type
TDD
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TDD
Electronic Component
SS24
Electronic Component
1
Package
SMA
Electronic Component
0.086g
Electronic Component
1
Electronic Component
BM0266040333
Electronic Component
Electronic Component
Electronic Component
2000

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

TDD SS24 肖特基整流二极管产品概述

这款由台冠电子(TDD)推出的SS24,是一款针对低压电路优化的SMA封装肖特基整流二极管,凭借低正向损耗、宽温适应性及抗浪涌能力,成为消费电子、工业辅助电路等领域的常用选型。

一、产品核心定位与设计初衷

SS24属于肖特基势垒二极管,核心优势来自金属-半导体接触结——区别于普通硅整流管的PN结,这一结构让它在保持2A级电流承载的同时,实现更低正向压降与更快开关速度。设计针对40V耐压的低压场景,主打高效能量转换与小型化布局。

二、关键性能参数深度解析

1. 正向导通特性

正向压降(Vf)仅700mV@2A——远低于普通硅管(如1N4007在1A下Vf约1V),相同电流下导通损耗降低30%以上,能有效减少电路发热,提升电源转换效率。

2. 反向耐压与漏电流

  • 直流反向耐压(Vr)达40V,覆盖12V、24V等主流低压系统的反向电压需求;
  • 反向电流(Ir)仅500μA@40V,漏电流控制在极低水平,保证截止状态下的绝缘性,避免不必要的能量损耗。

3. 电流承载与温宽

  • 直流连续整流电流(If)为2A,匹配SMA封装的典型电流承载能力;
  • 非重复峰值浪涌电流(Ifsm)达50A,可承受开机瞬间或负载突变的短暂大电流冲击,降低器件损坏风险;
  • 工作结温范围-55℃~+125℃,宽温设计适配工业环境(户外设备)、汽车辅助电路等高低温场景。

三、封装与可靠性设计

SS24采用SMA封装(DO-214AC),尺寸仅约3.2mm(长)×2.2mm(宽)×1.6mm(高),体积小巧,可大幅节省PCB空间,适合高密度贴装。

封装材料为耐高温环氧树脂,具备防潮、抗机械应力能力;引脚采用铜基镀锡工艺,焊接兼容性强(回流焊峰值温度≤260℃,焊接时间≤10s),避免热损伤影响可靠性。

四、典型应用场景

  1. 低压开关电源:手机充电器、LED驱动电源、机顶盒/路由器电源等,负责AC转DC后的低压整流,低损耗提升电源效率;
  2. 汽车电子辅助电路:车载USB充电模块、传感器供电电路等,宽温设计适应汽车舱内高低温变化;
  3. DC-DC转换器续流:降压/升压电路中作为续流二极管,肖特基快恢复特性(ns级)减少开关损耗;
  4. 小型家电控制电路:智能插座、加湿器电源等,满足2A级电流的整流需求。

五、选型与使用注意事项

  1. 耐压匹配:电路反向电压需低于40V,若系统电压更高(如48V),需选SS34等更高耐压型号;
  2. 电流裕量:连续工作电流建议不超过1.5A(留25%裕量),避免长期过载导致结温过高;
  3. 散热优化:SMA封装散热有限,若工作在125℃附近,可通过引脚焊盘铺铜辅助散热;
  4. 存储与焊接:存储需常温干燥(湿度≤60%),焊接控制温度,防止引脚氧化或封装变形。

整体来看,TDD SS24以均衡的性能、小巧封装及高可靠性,成为低压2A级整流/续流应用的高性价比选型,适合量产电路的成本与性能平衡需求。

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