WMSIC Electronic Components

DOWO SS515

ModelSS515
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 SS515
Type
DOWO
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SS515
Electronic Component
1
Package
SMA
Electronic Component
Schottky Diode
Electronic Component
0.121g
Electronic Component
1
Electronic Component
BM0231110375
Current
5A
Diode
1
Current(Ir)
100uA@150V
(Vf)
950mV@5A
Electronic Component
55℃~+175℃
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.

SS515 产品概述

一、概述与核心参数

SS515 是 DOWO(东沃)提供的一款单只独立封装二极管,采用 SMA 封装,面向中小功率整流和保护应用。该器件在保持紧凑封装的同时,具备 5A 的整流电流能力与较高的反向耐压性能,适用于对体积与散热有一定要求但需承受较高电压的场景。

主要电气与热参数:

  • 二极管配置:1 个独立式
  • 正向压降 (Vf):0.95 V @ IF = 5 A
  • 直流反向耐压 (Vr):150 V
  • 平均整流电流:5 A
  • 反向电流 (Ir):100 μA @ VR = 150 V
  • 工作结温范围:-55 ℃ ~ +175 ℃
  • 非重复峰值浪涌电流 (IFSM):100 A
  • 封装:SMA
  • 品牌:DOWO(东沃)

二、主要特性

  • 高电压耐受:150 V 的直流反向耐压使其可在中压电路中作为整流或保护元件使用,适合 12 V~48 V 等常见总线及更高电压等级的应用场景。
  • 稳定的整流能力:5 A 的整流电流适合板级整流、低压电源及功率转换器的输出整流或二次侧整流使用。
  • 峰值浪涌能力:100 A 的非重复峰值浪涌电流允许器件在启动或短时异常工况下承受短脉冲冲击,但需注意此参数为非重复脉冲,应避免长时或频繁的冲击。
  • 宽温度范围:-55 ℃~+175 ℃ 的结温范围指示器件适用于高温环境,便于在工业、户外或温度波动较大的场合中可靠工作(最终使用场景应以系统热设计和认证为准)。
  • 封装与可装配性:SMA 封装兼顾体积与散热,在自动贴片生产线上有良好兼容性,便于高密度布板与批量生产。

三、典型应用场景

  • 开关电源和离散整流:作为输出二极管或次级整流元件。
  • 反向电压保护:用于防止电源反接、保护敏感电路。
  • 自由轮二极管:在电感性负载(如继电器、马达驱动)回路中担任瞬态回放。
  • UPS、电池充放电管理:在中等电压等级的电源路径中用作整流或隔离器件。
  • 工业电子设备、通信电源模块、测试与测量仪器等需兼顾电压和电流能力的场合。

四、设计与布局建议

  • 散热管理:尽管 SMA 封装在空间上有优势,但 5 A 持续工作时会产生显著功耗(P = Vf × IF)。建议在 PCB 设计中提供充足的铜箔散热区、使用多个热过孔将热量导向内层/底层大面积铜地或散热片,以降低结温并提升可靠性。
  • 走线与焊盘:输入、输出走线尽量短且宽,减少寄生电阻和电感;遵循厂方推荐的焊盘尺寸和贴片锡膏模板以保证良好焊接性与热导通。
  • 浪涌保护与熔断:100 A 的峰值浪涌能力仅限短脉冲,应在需要时配合保险丝或其他浪涌抑制器件,避免频繁的高能脉冲损伤器件。
  • 热翘曲与焊接工艺:在回流焊装配时,遵循制造商的温度曲线与预热要求,避免过高的炉温或过长的回流时间导致封装应力或性能退化(具体回流参数请参考原厂资料)。

五、可靠性与注意事项

  • 反向漏电随温度升高而增长:在高温工作条件下,反向电流可能显著增加,应在热设计与偏置条件上加以考虑。
  • 非重复峰值说明:IFSM 为非重复性或偶发脉冲能力,不等同于重复脉冲或持续短路能力。长期短路或过载会导致器件失效。
  • 参数匹配:在替换或并联使用多只器件时,应确保 Vf、Ir、热阻等参数匹配,以避免电流不均或局部过热。

六、选型与采购建议

  • 选型时关注关键参数的匹配:直流耐压 Vr ≥ 150 V、平均整流电流 ≥ 5 A、峰值浪涌 IFSM ≥ 100 A、封装为 SMA、并关注正向压降 Vf 与反向漏电 Ir 等指标。
  • 若需更低正向压降或更高频率应用,请对比肖特基二极管或快恢复二极管的特性,并参考器件的反向恢复时间和功耗表现。
  • 采购时建议索取 DOWO 的完整数据手册与可靠性测试报告,确认回流焊曲线、封装尺寸图与环境应力测试结果,以保障生产与长期可靠性。

结语:SS515 在体积受限但需要承受中高电压与中等整流电流的应用中,提供了稳健的电气和热性能。具体使用时,请结合系统热设计与实际工作条件,参考原厂详细数据手册并进行必要的寿命与环境测试,以确保长期稳定运行。若需进一步的电路匹配建议或 PCB 热设计优化方案,可提供具体电路与布局图以便分析。

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