WMSIC Electronic Components

DOWO SMBJ14CA

ModelSMBJ14CA
PackageSMB(DO-214AA)
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 SMBJ14CA
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SMBJ14CA
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.2g
Electronic Component
1
Electronic Component
BM0264356181
Operating Temperature
55℃~+150℃
Voltage
23.2V
Current(Ir)
1uA
Voltage(VBR)
15.6V
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.

SMBJ14CA 产品概述

一、产品简介

SMBJ14CA 是东沃(DOWO)推出的一款双向瞬态电压抑制(TVS)二极管,采用玻璃钝化芯片工艺,封装为 SMB (DO-214AA)。器件设计用于在瞬态过电压发生时快速钳位保护敏感电子元件,特别适合供电线、数据通信接口及工业/汽车电路的脉冲浪涌防护。

二、主要特性

  • 双向(Bi-directional)保护,可抑制正、负方向的瞬态脉冲。
  • 峰值脉冲功率 600W(波形 10/1000μs,重复率/占空比 0.01%)。
  • 峰值脉冲电流 Ipp = 25.86A(对应 10/1000μs 波形)。
  • 钳位电压典型值 Vc ≈ 23.2V,击穿电压 VBR ≈ 15.6V。
  • 反向截止电压 Vrwm = 14V,保证在工频或直流工作电压下不导通。
  • 极低漏电流 Ir ≤ 1 μA,降低正常工作功耗与误触发风险。
  • 响应速度极快,能在亚微秒级别钳制瞬态电压。
  • 玻璃钝化芯片,增强稳定性与可靠性。
  • 工作温度范围宽:-55℃ 至 +150℃,适应恶劣环境。
  • 符合 RoHS 环保标准。

三、电气参数要点

  • 反向工作峰值电压(Vrwm):14V。
  • 击穿电压(VBR):约 15.6V(典型/额定值依据测试条件)。
  • 钳位电压(Vclamp):约 23.2V(在 Ipp 条件下)。
  • 峰值脉冲电流(Ipp):25.86A(10/1000μs)。
  • 峰值脉冲功率(Ppp):600W(10/1000μs,重复率 0.01%)。
  • 反向漏电流(Ir):≤1 μA(在 Vrwm 条件下)。
    注:以上为典型/额定参数,具体使用时请参考厂方完整数据表与测试条件。

四、封装与机械特性

  • 封装:SMB / DO-214AA,适合表面贴装或波峰焊工艺。
  • 推荐在 PCB 上尽量缩短到被保护节点的连线长度,以降低串联电感与提升响应能力。
  • 双向器件在 PCB 上对称焊接,便于在正负方向均能快速钳位。

五、典型应用场景

  • 通信端口保护:以太网、串口、CAN 总线、USB 接口等。
  • 电源输入保护:直流电源线、逆变器输入、充电器保护等。
  • 汽车电子:车载总线、转向/车灯控制模块、电源管理(工作温度适配)。
  • 工业控制与测量设备:PLC、传感器输入、工业以太网等易受浪涌影响的节点。

六、设计与使用建议

  • 将 TVS 器件尽量靠近被保护端口或接地端放置,缩短焊盘到元件的走线。
  • 考虑系统中的重复冲击与热耗散:600W 为脉冲峰值能力,重复脉冲和长期能量吸收需要根据实际工作周期与热设计评估。
  • 若需更高的持续能量承受或更低钳位,可考虑并联多只或配合限流器(保险丝、正温系数电阻)使用。
  • 焊接时遵循 SMB 封装的焊接温度规范,避免超温或长时间加热影响器件性能(参见厂方工艺说明)。

七、包装与采购

  • 品牌:DOWO(东沃)。
  • 封装型号:SMBJ14CA,SMB (DO-214AA)。
  • 订购与技术支持请联系东沃或授权分销商,获取完整数据手册、曲线图和可靠性报告以便于设计验证。

SMBJ14CA 以其高脉冲能量吸收能力、低泄漏和宽温度范围,适用于需要稳健瞬态抑制的各种电子系统。在实际应用中,请结合完整数据手册与系统能量评估选择合适的 TVS 型号与布局。

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