WMSIC Electronic Components

DOWO SMBJ8.5CA

ModelSMBJ8.5CA
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 SMBJ8.5CA
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SMBJ8.5CA
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
BM0265602945
Operating Temperature
55℃~+150℃
Voltage
14.4V
Current(Ir)
10uA
Voltage(VBR)
9.44V
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.

SMBJ8.5CA 双向瞬态抑制二极管(TVS)产品概述

一、产品基本定位与核心属性

SMBJ8.5CA是东沃(DOWO)推出的一款双向瞬态抑制二极管(TVS),属于SMB(DO-214AA)表面贴装封装系列,核心定位为小体积、高可靠的电路过压防护器件。其专为消费电子、工业控制、通信等领域的瞬态浪涌抑制设计,可有效抵御雷击、静电放电(ESD)、电源波动等带来的过压冲击,保护后端敏感元器件(如MCU、传感器、芯片)不被击穿。

二、关键电气参数解析

SMBJ8.5CA的参数设计精准匹配了多场景的过压防护需求,核心参数解析如下:

1. 电压类参数:精准控制过压阈值

  • 反向截止电压(Vrwm):8.5V:电路正常工作时,TVS处于截止状态的最大电压,确保设备在常规电压下无额外功耗损耗;
  • 击穿电压(Vbr):9.44V:当瞬态电压超过此值时,TVS快速导通(响应时间仅ns级),开启过压保护;
  • 钳位电压(Vc):14.4V:在额定脉冲电流下,TVS将电路电压钳位的最高值——14.4V的低钳位电压是核心优势,可直接避免后端12V/15V级敏感元件被过压击穿。

2. 电流与功率参数:耐受强浪涌冲击

  • 峰值脉冲电流(Ipp):104.17A:在10/1000μs浪涌波形下(国际通用测试标准:上升沿10μs、半峰值时间1000μs),TVS能承受的最大瞬间电流,可应对雷击、工业现场的强浪涌;
  • 峰值脉冲功率(Ppp):600W@10/1000μs:对应浪涌的最大功率耐受值,直接体现了产品的抗冲击能力,满足多数中功率场景的防护需求。

3. 其他关键参数

  • 反向漏电流(Ir):10μA:正常工作时的漏电流极小,不会对电路功耗造成明显影响;
  • 工作温度范围:-55℃~+150℃:覆盖工业级、汽车级等恶劣环境的温度需求,可在高温车间、户外通信设备中稳定工作。

三、封装与机械特性

SMBJ8.5CA采用SMB(DO-214AA)表面贴装封装,具有三大核心优势:

  1. 体积紧凑:典型尺寸约为2.5mm(长)×5.0mm(宽)×1.5mm(高),适配手机主板、小型控制器等高密度PCB设计;
  2. 无极性设计:双向TVS无需区分正负极,简化了电路布线与生产贴装流程,降低了设计错误风险;
  3. 自动化适配:符合SMT贴装标准,可通过自动贴片机高效安装,减少人工成本与装配误差。

四、典型应用场景

SMBJ8.5CA的参数与封装特性,使其适配多领域的过压防护需求:

  1. 消费电子:手机、平板、笔记本的USB接口、HDMI接口、充电端口保护——小封装匹配便携设备的空间限制,双向保护简化接口设计;
  2. 工业控制:PLC模块、传感器节点、电机驱动电路——宽温范围(-55℃~+150℃)适应车间高温/低温环境,600W脉冲功率抵御工业浪涌;
  3. 通信设备:基站、路由器、交换机的以太网接口、射频端口——高抗浪涌能力应对雷击、静电等户外/机房干扰;
  4. 汽车电子辅助:车载USB、仪表盘传感器的低压防护(需结合汽车级认证)——宽温范围匹配车载环境的温度波动。

五、产品优势与市场价值

SMBJ8.5CA在同类产品中具有明显的性价比优势:

  • 保护精准:低钳位电压+精准击穿电压,减少敏感元件损伤风险;
  • 环境适配:宽温范围+SMB封装,覆盖多场景温度、空间需求;
  • 设计简化:双向无极性设计,降低电路设计与生产复杂度;
  • 成本可控:东沃品牌的高可靠性与SMB封装的量产优势,平衡性能与成本。

综上,SMBJ8.5CA是一款高性价比、多场景适配的双向TVS器件,可满足多数中低压电路的瞬态过压防护需求。

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