WMSIC Electronic Components

DOWO SS13

ModelSS13
PackageSMA
BrandDOWO
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
DOWO SS13
Type
DOWO
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SS13
Electronic Component
1
Package
SMA
Electronic Component
Schottky Diode
Electronic Component
0.154g
Electronic Component
1
Electronic Component
BM0264548658
Current
1A
Diode
1
Current(Ir)
500uA@30V
(Vf)
550mV@1A
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.

SS13(DOWO 东沃)产品概述

一、性能概览

SS13 是一款面向低压、高频电源与逆变应用的独立式整流二极管(SMA 封装),由 DOWO(东沃)生产制造。器件采用低剖面封装并支持自动贴装工艺,具有低功耗、高效率与良好的浪涌承受能力,适用于开关电源、驱动器及续流(freewheeling)场合。

主要特点一览:

  • 低正向压降,减小导通损耗,提高效率(Vf = 0.55 V @ 1 A)。
  • 30 V 反向耐压,适合低压电源回路。
  • 1 A 连续整流电流,30 A 非重复峰值浪涌电流(Ifsm)。
  • 反向电流 500 μA @ 30 V,工作结温范围宽(-55 ℃ 至 +150 ℃)。
  • 低剖面 SMA 封装,适合自动贴装,符合 J-STD-020 MSL 1,最高无铅回流温度 260 ℃。

二、主要电气参数

  • 二极管配置:单只独立式
  • 正向压降(Vf):0.55 V @ IF = 1 A
  • 直流反向耐压(Vr):30 V
  • 最大整流电流:1 A(连续)
  • 反向漏电流(Ir):500 μA @ VR = 30 V
  • 非重复峰值浪涌电流(Ifsm):30 A(一次性峰值冲击能力)
  • 工作结温范围:-55 ℃ ~ +150 ℃

以上参数为器件典型/标称指标,在极限工作条件下需参照厂方完整数据手册及绝对最大额定值。

三、结构与封装

  • 封装形式:SMA(低剖面,适配常见贴片生产线)
  • 机械特性:封装带保护环结构,用于过压或机械保护(提高装配强度及可靠性)
  • 可靠性与可焊性:符合 J-STD-020 的 MSL 1 等级,最大无铅回流峰值温度 260 ℃,可直接用于无铅回流焊工艺。

SMA 封装在小尺寸下提供合理的功率散热路径,适合PCB上通过铜箔扩散热量的方式进行温升控制。

四、典型应用场景

  • 低压高频逆变器:作为续流二极管或整流元件,用于同步整流/非同步整流回路。
  • 开关电源(SMPS):输出整流、反向保护及续流路径。
  • 马达驱动与电机控制器:电机反向电流回路的钳位/续流元件。
  • LED 驱动与照明电源:低压等级下的整流与保护。
  • 低压逆变/升压器中的保护与续流二极管。

五、使用与焊接建议

  • 焊接工艺:支持常规无铅回流焊(峰值温度 ≤ 260 ℃),推荐遵循 J-STD-020 回流曲线。
  • 版图与散热:尽量在二极管焊盘区域增加铜箔面积或通过过孔导热,以降低结温并提高连续导流能力。
  • 浪涌管理:Ifsm 为非重复峰值浪涌能力(30 A),应避免重复或长时间超出此类冲击,必要时在系统中并联限流或吸收元件(如 TVS、RC)来抑制冲击。
  • 温度影响:反向漏电流随温度上升显著增加,在高温环境下需考虑漏电对功耗与电路性能的影响,并做适当降额设计。
  • 极性识别与保护:安装时注意二极管极性(标记指示),并在电路中配合适当的抑制器件处理过压或反向瞬态。

六、优势与选型要点

  • 低正向压降带来较低的功耗,适合高频切换场合以提高整体效率。
  • SMA 低剖面封装适合自动化贴装,节省空间同时兼顾散热。
  • MSL 1 与 260 ℃ 的峰值回流温度保证了良好的工艺适配性,便于大规模生产。
  • 选型时需确认系统最高工作电压不超过 30 V,并根据工作环境温度考虑反向漏电流与结温降额。

七、注意事项与可靠性

  • 请按照厂方完整规格书确认绝对最大额定值、热阻与典型特性曲线,尤其是在高温或频繁冲击工况下。
  • 在需要长期大电流工作的场合,建议在 PCB 设计中预留更多散热铜层或使用散热片,以防器件长期过热导致性能退化。
  • 对于有严格漏电流要求的应用,务必进行实测并评估高温条件下的 Ir 增长趋势。
  • 若系统中存在反复高能量瞬态,建议与 TVS 等抑制元件配合使用以延长二极管寿命。

总结:DOWO 的 SS13(SMA)以其低压降、适配自动化贴装、良好的浪涌能力及宽工作温度范围,适合用于低压、高频逆变与续流场合。正确的 PCB 散热设计与焊接工艺能充分发挥其性能并保证系统长期稳定运行。

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