WMSIC Electronic Components

Brightking SMAJ7.0CA/TR13 SMAJ7.0CA

ModelSMAJ7.0CA/TR13
PackageSMA(DO-214AC)
BrandBrightking
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Brightking SMAJ7.0CA / TR13
Type
BRIGHTKING
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Brightking
Electronic Component
SMAJ7.0CA/TR13
Electronic Component
1
Package
SMA(DO-214AC)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.12g
Electronic Component
1
Electronic Component
BM0264342591
Voltage
12V
Electronic Component
IEC 61000-4-2
Current(Ir)
200uA
Voltage(VBR)
7.78V
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.

Brightking SMAJ7.0CA/TR13 瞬态抑制二极管(TVS)产品概述

一、产品核心定位

Brightking(台湾君耀)SMAJ7.0CA/TR13是一款双向瞬态抑制二极管(TVS),专为电子设备的静电放电(ESD)、电快速瞬变脉冲群(EFT)等瞬态过压防护设计。产品采用SMA(DO-214AC)小型表面贴装封装,编带包装(TR13标识),适用于高密度PCB布局的通用电子设备,可有效保护敏感电路免受瞬态脉冲损坏。

二、关键电气参数解析

产品核心电气参数直接决定防护能力,以下为关键参数的工程意义:

  1. 极性:双向
    无需区分正负极,电路设计中可直接并联于被保护端口,简化布线与组装流程,降低设计复杂度。
  2. 反向截止电压(Vrwm):7V
    正常工作状态下(无瞬态脉冲),TVS处于截止状态的最大反向电压,确保不干扰电路正常信号传输,适配3.3V/5V主流供电系统。
  3. 钳位电压:12V
    当峰值脉冲电流(Ipp)作用时,TVS两端的最高电压,是保护后级敏感器件(如MCU、传感器)的核心指标——12V钳位电压可有效抑制过压,避免器件击穿(多数敏感芯片耐压≤5V)。
  4. 峰值脉冲电流(Ipp):33.3A
    8/20μs标准脉冲波形下的最大耐受电流,对应峰值脉冲功率(Ppp=400W),可覆盖消费电子、通信设备的典型瞬态脉冲强度(如USB接口ESD冲击)。
  5. 击穿电压:7.78V(典型值)
    TVS开始导通的典型电压,略高于反向截止电压,保证“正常工作-防护切换”的稳定性,避免误触发。
  6. 反向漏电流(Ir):200μA
    反向截止电压下的漏电流,数值极低,对电路静态功耗影响可忽略,适配低功耗设备。
  7. 防护等级:IEC 61000-4-2
    符合国际静电放电防护标准,可抵御接触放电(±8kV)、空气放电(±15kV)等典型ESD冲击,满足大多数电子设备的EMC要求。

三、封装与包装细节

  1. 封装类型:SMA(DO-214AC)
    尺寸约为2.0mm×3.8mm×1.5mm,属于小型表面贴装封装,适配自动化贴装设备,适合高密度PCB设计(如智能手机、可穿戴设备)。
  2. 包装标识:TR13
    表示13英寸编带包装,每盘通常含3000只器件,满足批量生产需求,便于SMT产线高效供料,减少人工操作误差。

四、典型应用场景

SMAJ7.0CA/TR13的参数特性使其适配多类电子设备的瞬态防护:

  1. 消费电子领域
    手机、平板、笔记本电脑的USB接口、HDMI端口、音频接口等,保护内部MCU、Codec等敏感芯片免受ESD冲击。
  2. 通信设备
    路由器、交换机、无线AP的以太网端口、射频接口,抵御EFT及雷电感应过压,提升设备可靠性。
  3. 工业控制设备
    PLC(可编程逻辑控制器)的数字输入输出端口、传感器模块,防止现场电磁干扰导致的过压损坏,适应工业环境宽温要求(-55℃~+150℃)。
  4. 小型家电与IoT设备
    智能音箱、智能家居控制器的电源与信号端口,解决用户插拔设备时的ESD风险,延长产品寿命。

五、产品核心优势

  1. 双向防护简化设计
    无极性要求,电路设计无需区分正负极,降低布线难度,减少组装错误概率。
  2. 快速响应能力
    TVS响应时间达ns级(典型值<1ns),远快于压敏电阻(μs级),可瞬间抑制瞬态脉冲,保护高速信号传输电路。
  3. 低钳位比保障防护
    钳位电压(12V)与击穿电压(7.78V)的比值约1.54,属于低钳位比设计,有效限制过压峰值,减少对后级器件的应力损伤。
  4. 小体积适配高密度布局
    SMA封装体积紧凑,适配当前电子设备“轻薄化”趋势,不占用过多PCB空间,支持多端口并行防护。
  5. 高可靠性与宽温范围
    经过君耀严格的可靠性测试(温度循环、湿度老化、机械振动),可在-55℃~+150℃宽温范围内稳定工作,满足工业级与消费级设备的双重需求。

六、应用设计注意事项

为确保防护效果,需注意以下设计要点:

  1. 并联安装原则
    TVS必须并联于被保护电路的电源端/信号端与地之间,双向器件无极性要求,避免串联导致电路中断。
  2. 电流容量匹配
    根据电路可能出现的最大瞬态电流选择器件,SMAJ7.0CA的33.3A Ipp适用于中等强度脉冲场景;若需雷电防护(如户外设备),需选择更大功率TVS(如SMBJ系列)。
  3. 布线优化
    尽量将TVS靠近被保护端口安装,减少引线长度(<1cm),降低引线电感对防护效果的影响(引线电感会放大脉冲电压)。
  4. 功率降额使用
    实际应用中建议将峰值脉冲功率降额至额定值的80%以下,延长器件使用寿命,避免长期应力导致性能衰减。

该产品凭借双向防护、快速响应、小体积等优势,成为消费电子、通信、工业控制等领域的主流瞬态防护器件之一,可有效提升设备的抗干扰能力与可靠性。

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