WMSIC Electronic Components

BORN SMBJ7.0A

ModelSMBJ7.0A
PackageSMB
BrandBORN
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
BORN SMBJ7.0A
Type
BORN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BORN
Electronic Component
SMBJ7.0A
Electronic Component
1
Package
SMB
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.18g
Electronic Component
1
Electronic Component
BM0264595483
Voltage
10.5V
Current(Ir)
500uA
Voltage(VBR)
7.14V
Electronic Component
Electronic Component
Electronic Component
3000

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

SMBJ7.0A 瞬态抑制二极管(TVS)产品概述

SMBJ7.0A是伯恩半导体(BORN)推出的单向瞬态抑制二极管(TVS),专为5V左右电压系统的过压保护设计,采用SMB(DO-214AA)贴片封装,具备响应速度快、浪涌承受能力强、体积小巧等特点,广泛应用于消费电子、通信设备、工业控制等领域。

一、产品核心定位与应用场景

SMBJ7.0A的核心作用是快速抑制瞬态过压,防止电路因静电放电(ESD)、电源浪涌、雷电感应等突发过压损坏。其适配的电压系统以5V为主(如USB 2.0/3.0、5V电源模块),典型应用场景包括:

  • 消费电子:智能手机、平板电脑的充电端口、耳机接口;
  • 通信设备:路由器、交换机的以太网端口、USB接口;
  • 工业控制:小型PLC、温度/压力传感器的输入输出端口;
  • 汽车电子:车载USB接口(低电压场景)、车载显示屏辅助电路。

二、关键电气参数深度解析

SMBJ7.0A的参数设计精准匹配5V系统的保护需求,核心参数及实际意义如下:

2.1 电压类参数

  • 反向截止电压(Vrwm):5.8V
    器件正常工作时允许施加的最大反向直流电压,不发生击穿。该值略高于5V系统的最高工作电压(通常≤5.5V),确保电路正常运行时无漏电流干扰。
  • 击穿电压(Vbr):7.14V
    反向电压达到此值时器件开始导通,是保护的“启动阈值”。比Vrwm高1.34V,避免系统电压波动(如5V→5.8V)触发误保护。
  • 钳位电压(Vc):10.5V
    峰值脉冲电流通过时,器件两端的最大电压(即被保护电路的最高电压)。远低于5V系统器件的损坏阈值(通常≥15V),有效隔离过压。

2.2 电流与功率参数

  • 峰值脉冲电流(Ipp):58.1A
    10/1000μs浪涌波形下的最大允许脉冲电流。该波形符合IEC 61000-4-5浪涌测试标准,说明器件可承受较强的突发浪涌。
  • 峰值脉冲功率(Ppp):600W@10/1000μs
    脉冲功率容量,反映器件的浪涌承受能力。600W的容量可覆盖多数消费电子和工业场景的浪涌需求。
  • 反向漏电流(Ir):500μA
    Vrwm下的反向漏电流,数值极低,正常工作时几乎不消耗额外功率,不影响系统效率。

2.3 极性与响应速度

  • 极性:单向
    仅抑制一个方向的过压(通常为正向浪涌),适合单极性电压系统(如5V电源),无需双向保护的场景可降低成本。
  • 响应速度:ns级
    远快于压敏电阻(μs级),可快速响应静电放电(ESD,ns级脉冲),避免电路瞬间损坏。

三、封装与可靠性设计

SMBJ7.0A采用SMB(DO-214AA)贴片封装,具备以下优势:

  • 体积小巧:尺寸约3.2×2.4×1.2mm,适合高密度PCB设计(如智能手机主板);
  • 焊接可靠:SMB封装的引脚设计便于回流焊,焊接强度高,抗振动性能好;
  • 环保合规:符合RoHS标准,无铅无卤,满足欧盟等地区的环保要求;
  • 浪涌一致性:伯恩半导体的封装工艺确保批量产品的浪涌参数一致性,减少客户筛选成本。

四、品牌与品质保障

伯恩半导体(BORN)是国内专注于半导体保护器件的厂商,SMBJ7.0A具备以下品质优势:

  • 认证齐全:通过ISO9001质量管理体系、IATF16949汽车电子体系认证;
  • 参数稳定:批量产品的击穿电压、钳位电压偏差小(通常≤±5%);
  • 供货稳定:具备大规模生产能力,可满足客户的量产需求;
  • 应用验证:已在多家消费电子、通信企业的量产产品中验证,可靠性经过市场检验。

五、总结

SMBJ7.0A作为一款针对性强的单向TVS,以精准的参数设计、小巧的封装和可靠的品质,成为5V系统过压保护的优选器件。其覆盖的应用场景广泛,能有效解决静电放电、浪涌等突发过压问题,提升电路的抗干扰能力和可靠性。

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