WMSIC Electronic Components

DOWO SMDJ90CA

ModelSMDJ90CA
PackageDO-214AB
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 SMDJ90CA
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SMDJ90CA
Electronic Component
1
Package
DO-214AB
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.43g
Electronic Component
1
Electronic Component
BM0264801950
Operating Temperature
55℃~+150℃
Voltage
146V
Current(Ir)
2uA
Voltage(VBR)
100V
Electronic Component
Electronic Component

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

SMDJ90CA 产品概述

一、产品简介

SMDJ90CA 是由 DOWO(东沃)推出的一款高能量浪涌抑制二极管,属于 TVS(瞬态电压抑制器)系列,采用 DO-214AB 封装(常见于 SMBJ 类封装)。器件为双向(双极性)结构,基于玻璃钝化芯片工艺,专为承受高能量瞬态脉冲和保护敏感电子器件免受雷击、开关瞬变及其他电磁干扰而设计。

二、主要特性

  • 双向极性设计,适用于交流或极性不确定的线路保护。
  • 反向截止电压(Vrwm):90V。
  • 击穿电压(VBR):100V。
  • 钳位电压(Vclamp):146V(在指定脉冲条件下)。
  • 峰值脉冲电流(Ipp):20.55A。
  • 峰值脉冲功率(Ppp):3000W,测试波形 10/1000μs,重复率(占空比)0.01%。
  • 低反向漏电流(Ir):典型 2μA,提升系统稳定性并减少静态功耗。
  • 工作温度范围:-55°C ~ +150°C。
  • 玻璃钝化芯片,响应快速,可靠性高。
  • 符合 RoHS 环保标准。

三、电气参数(关键参数概览)

  • 反向工作电压 Vrwm:90V(器件在正常工作状态下的最大直流耐受电压)。
  • 击穿电压 VBR:100V(在规定测试电流下测得)。
  • 钳位电压 Vc:146V(在 10/1000μs 脉冲条件、指定 Ipp 下测量所得,代表浪涌时保护电压)。
  • 峰值脉冲电流 Ipp:20.55A(对应 Ppp = 3000W,10/1000μs) 。
  • 峰值脉冲功率 Ppp:3000W(10/1000μs,D = 0.01%)。
  • 反向漏电流 Ir:2μA(典型值,常温下)。
    以上参数为典型/额定值,实际选型时请结合系统工作条件与安全余量进行评估。

四、机械与环境特性

  • 封装:DO-214AB(SMBJ 类封装),适合自动贴片与回流焊工艺。
  • 芯片工艺:玻璃钝化,提高长期稳定性和抗湿性能。
  • 工作温度范围宽(-55°C 至 +150°C),适合严苛温度环境。
  • 符合 RoHS 指令,环保无卤素合规。

五、典型应用场景

  • 电源输入端过压与雷击浪涌保护(DC/AC 系统)。
  • 通信设备、基站、路由器、电源模块的端口保护。
  • 工业控制、PLC、伺服驱动器的电源与信号线防护。
  • 家电、安防设备的电源和接口保护。
  • 汽车电子(非车规级认证需另行确认)及其他场合的瞬态抑制。

六、设计与布局建议

  • 器件应尽量靠近被保护的端口或连接器放置,以缩短输入端到 TVS 的走线,减小寄生感抗和走线电感。
  • 保持引线或焊盘之间短且粗,必要时在器件两侧增加铜箔面积以提高散热能力。
  • 对于高能量冲击场合,建议与适当的快速熔断器(熔断丝)或限流元件配合使用,以在超出 TVS 能力时保护元件不被持续损坏。
  • 双向 TVS 在安装时无极性要求,但在 PCB 丝印上标注以便生产与检修确认。
  • 回流焊工艺应遵循 PCB 制造及元件供应商的通用推荐回流温度曲线,避免超过封装和内部材料的耐温极限。多次高温回流会降低器件可靠性,应尽量减少。

七、包装与订购信息

  • 品牌:DOWO(东沃)。
  • 封装:DO-214AB(SMBJ)。
  • 可提供单向与双向型号,SMDJ90CA 为双向型号。
  • 订购时建议确认最小包装数量、交货期以及是否需要按客户要求进行 100% 测试或特殊标识。

八、注意事项与使用建议

  • TVS 旨在抑制瞬态电压,不适合作为长期过压承载器件。持续高于 Vrwm 的电压会导致器件发热或失效。
  • 在高能脉冲环境中,考虑对 TVS 进行热仿真与冲击能量验证,确保系统在典型雷击或开关浪涌下的可靠性。
  • 选型时应留有安全裕量:钳位电压需低于被保护器件能承受的最高电压,且 Vrwm 应不低于正常工作电压。
  • 如需更高能量能力或车规级可靠性,请咨询厂商索取更详尽的技术资料与认证信息。

SMDJ90CA 以其高达 3000W 的峰值脉冲功率能力、低漏电流和玻璃钝化工艺,适合要求高能量冲击抑制与长期稳定性的电力与电子设备保护应用。选择和布局合理的保护方案,将显著提升系统抗浪涌能力与长期可靠性。

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