WMSIC Electronic Components

CJ SS520

ModelSS520
PackageSMAG
BrandCJ
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
CJ SS520
Type
CJ
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJ
Electronic Component
SS520
Electronic Component
1
Package
SMAG
Electronic Component
Schottky Diode
Electronic Component
0.08g
Electronic Component
1
Electronic Component
BM0230578332
Current
5A
Diode
1
Current(Ir)
200uA@200V
(Vf)
950mV@5A
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.

SS520 肖特基二极管(CJ,SMAG 封装)产品概述

SS520 是江苏长电(CJ/长晶)生产的一款肖特基整流二极管,面向中等功率直流整流和开关电源应用。该器件以低正向压降和快速恢复特性为主要优势,适合在高开关频率和高效率要求的电源电路中作为整流、续流或反向极性保护器件使用。其基本电气和热性能指标如下:直流反向耐压 Vr = 200 V;额定平均整流电流 IO = 5 A;反向电流 Ir = 200 μA(在 Vr = 200 V 时);非重复峰值浪涌电流 Ifsm = 150 A;工作结温范围 Tj = -55 ℃ ~ +150 ℃;封装为 SMAG。

一、主要特性与优势

  • 低正向压降:肖特基势垒结构使正向压降明显低于普通硅整流二极管,有利于减小整流损耗、提高系统效率并降低发热量。
  • 快速响应与近零恢复:几乎无反向恢复电荷,适合高频开关电源和脉冲整流场合,可降低开关损耗与电磁干扰(EMI)。
  • 额定电流与浪涌能力:连续整流电流 5 A 满足中等功率路径需求;150 A 的非重复峰值浪涌能力可以承受启动或短时过载冲击(测量条件请参见详细 Datasheet)。
  • 宽温度工作范围:-55 ℃ 至 +150 ℃ 的结温范围适用于工业级环境,可靠性高。

二、电气性能要点(需参考 Datasheet 的完整曲线)

  • 反向耐压:200 V(DC),在设计时需留有足够的安全裕度以避免击穿。
  • 反向电流:200 μA @ 200 V(该项随温度上升明显增加,设计中应考虑温升后的泄露电流)。
  • 浪涌电流能力:150 A(非重复峰值);具体冲击波形(如 8.3 ms 半正弦)和条件应以制造商规格为准。
  • 正向压降:肖特基器件的正向压降随电流和结温变化,现场设计可通过测量或参考厂方典型曲线来确定损耗评估。

三、典型应用场景

  • 开关电源输出整流(同步替代或非同步整流场合)。
  • DC-DC 升/降压转换器中的续流二极管。
  • 汽车与工业电源中的反向极性保护与防反接电路(需注意 200 V 反向耐压的界限,适用于高压侧保护)。
  • 电池充放电管理、太阳能逆变器的中低压整流应用。
  • 高频脉冲电路与扼流器续流应用。

四、封装与热管理建议(SMAG 封装)

  • SMAG 封装适合自动贴装(SMT),在 PCB 设计时应为器件提供充足的散热铜箔面积,必要时在焊盘下方布置过孔/热通孔以改善热传导到内层或底层散热面。
  • 在连续 5 A 工作时,器件结温会随封装热阻与环境温度上升,建议在布局中尽量缩短电流导线并使用加宽铜线/散热铜皮。
  • 焊盘尺寸、焊接热阻与回流工艺请参考厂方封装图与回流曲线,避免过热或焊点不足导致热阻增加。

五、可靠性与使用注意

  • 反向电流随结温与电压呈指数上升,应避免在高温高压同时长期工作;如应用于高温环境请做好热仿真与热限流设计。
  • 浪涌能力为非重复峰值,不能替代短时重复过载或频繁冲击。若应用中存在重复浪涌,应选用具有更高 Ifsm 或额外限流保护的方案。
  • 为防止静电或瞬态冲击损伤,制造与装配环节需采取 ESD 防护措施。
  • 使用过程中请避免超过最大结温上限(+150 ℃);长期在高结温下工作会显著降低寿命和可靠性。

六、PCB 布局与典型接法建议

  • 将 SS520 放置在电源回路的电流路径上,输入/输出引线尽量短、宽,减少电感与寄生阻抗。
  • 对于高频整流,靠近电感/开关器件放置可缩短环路面积,降低 EMI。
  • 对热量密集的场合,可在二极管下方或两侧增加铜箔、热通孔并与散热片或底板连接,确保结温保持在合理范围内。

七、采购与替代

  • 型号:SS520,品牌:CJ(江苏长电/长晶),封装:SMAG。订购与包装形式(卷装/盘装)或最低订购量请咨询供应商或代理商。
  • 替代选择时应关注:直流反向耐压、平均整流电流、反向电流、Ifsm、封装热阻与尺寸,以保证替代件在实际电气和热条件下兼容。

如需进一步的电气特性曲线(Vf–If、Ir–Vr、功耗–温度、热阻 RθJA/RθJC)、封装尺寸图或具体 PCB 焊盘设计建议,我可以根据厂方 Datasheet 帮您提取并给出针对性的布局与热管理方案。

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