WMSIC Electronic Components

TDD SS34F

ModelSS34F
PackageSMAF
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 171406

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Technical data

Product details

13 specifications

Core information

Product name
TDD SS34F
Type
TDD
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TDD
Electronic Component
SS34F
Electronic Component
1
Package
SMAF
Electronic Component
0.049g
Electronic Component
1
Electronic Component
BM0266040335
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.

SS34F 整流二极管产品概述

一、产品基本属性与定位

SS34F是台冠电子(TDD)推出的一款表面贴装整流二极管,采用SMAF封装,核心定位为中小功率低电压整流场景。它针对便携式设备、小型电源等对效率、体积敏感的应用设计,兼顾导通损耗、抗浪涌能力与宽温适应性,是替代传统整流器件的高性价比选择。

二、核心电气参数解析

SS34F的参数特性直接决定了其适用场景,关键参数解析如下:

1. 正向压降(Vf):700mV@3A

这是SS34F的核心优势——低导通损耗。在3A持续电流下,正向压降仅700mV,远低于部分同类快恢复二极管(通常850mV以上)。相同电流下,器件自身发热更少,电路整体效率更高,尤其适合LED驱动、便携电源等对功耗敏感的场景。

2. 直流反向耐压(Vr):40V

明确了器件可承受的最大反向直流电压,若电路反向电压峰值超过40V会击穿。例如12V/24V电源整流时,反向电压余量充足(通常≤30V),可靠性有保障。

3. 整流电流(If):3A

指长期稳定工作的最大正向电流(结温≤125℃时)。实际应用建议降额使用(控制在2A以内),避免过载导致结温过高,影响寿命。

4. 反向电流(Ir):550uA@40V

反向漏电流处于同类器件中游水平,既保证反向截止性能,又不会因漏电流过大增加反向功耗。

5. 非重复峰值浪涌电流(Ifsm):80A

体现抗冲击能力——可承受瞬间(10ms内)80A浪涌,应对电源开机电容充电、负载突变等冲击,无需额外浪涌抑制器件。

6. 工作结温范围:-55℃~+125℃

宽温覆盖工业级、户外场景需求,-55℃低温仍正常工作,+125℃高温稳定运行,适配极端环境应用。

三、封装与物理特性

SS34F采用SMAF表面贴装封装,尺寸约1.6mm×3.0mm×1.1mm,优势明显:

  • 适配自动化贴装(回流焊/波峰焊),生产效率高;
  • 节省PCB空间,适合手机充电器、智能手环等小型化产品;
  • 引脚间距合理,焊接可靠性高,不易虚焊。

四、典型应用场景

结合参数特性,SS34F适用于以下场景:

  1. 小型开关电源适配器:如5V/3A手机充电器,低Vf减少发热,抗浪涌应对开机冲击;
  2. LED照明驱动:低功耗匹配LED驱动效率要求,宽温适应户外路灯、面板灯;
  3. 便携式电子设备电源管理:智能手表、运动相机充电电路,小封装节省空间;
  4. 低电压DC-DC转换:整流环节提升转换效率;
  5. 小型家电控制板:智能插座、加湿器电源模块,抗浪涌应对开机冲击。

五、选型与使用注意事项

  1. 电流降额:实际工作电流≤2A(留33%余量),长期3A工作需优化PCB散热(增加铜箔、散热片);
  2. 电压防护:反向电压峰值≤40V,瞬态过压需并联TVS二极管;
  3. 焊接工艺:回流焊温度≤260℃(持续≤10s),避免高温损伤;
  4. 散热设计:SMAF封装散热面积小,需保证焊盘与铜箔连接良好,必要时加散热过孔;
  5. 存储条件:未焊接器件存于-10℃~+40℃、湿度≤60%环境,避免氧化。

六、产品优势总结

SS34F作为台冠电子主流器件,核心优势突出:

  • 高效低耗:700mV@3A压降减少发热与功耗;
  • 高可靠性:80A抗浪涌+宽温范围,适应复杂场景;
  • 小体积易集成:SMAF封装节省空间,适配小型化产品;
  • 性价比高:兼顾性能与成本,适合消费电子、工业控制批量应用。

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