WMSIC Electronic Components

MCC SMBJ7.0A-TP SMBJ7.0A

ModelSMBJ7.0A-TP
PackageSMB(DO-214AA)
BrandMCC
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
MCC SMBJ7.0A-TP
Type
MCC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MCC
Electronic Component
SMBJ7.0A-TP
Electronic Component
1
Package
SMB(DO-214AA)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.211g
Electronic Component
1
Electronic Component
BM0264911045
Operating Temperature
55℃~+175℃
Voltage
12V
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.

SMBJ7.0A-TP TVS二极管产品概述

一、产品核心定位与品牌背景

SMBJ7.0A-TP是MCC美微科推出的一款单向瞬态电压抑制器(TVS二极管),核心功能是为电子电路提供快速过压保护,针对低压系统中的瞬态浪涌(如雷击感应、电源开关噪声、ESD静电放电等)实现电压钳位。该器件采用SMB封装(DO-214AA),属于小型表面贴装型,适配高密度PCB设计,广泛覆盖工业控制、汽车电子、消费电子等场景。MCC作为专业半导体厂商,其TVS产品以参数一致性好、宽温可靠性高为特点,SMBJ7.0A-TP延续了品牌的稳定品质。

二、关键电气参数及实际意义

SMBJ7.0A-TP的参数围绕“保护有效性”与“电路兼容性”设计,核心参数解读如下:

  • 极性:单向:仅对单一方向(反向)过压脉冲起保护作用,需严格匹配电路极性(如电源正负极间,TVS负极接电源正、正极接电源负);
  • 反向截止电压(Vrwm):7V:正常工作时反向可承受的最大直流电压(无击穿),适配≤6V直流电源系统(留1V安全余量),避免正常电压下漏电流过大;
  • 钳位电压:12V:瞬态浪涌时快速击穿,将电压钳位在12V左右,确保后端敏感元件(MCU、传感器等)不超耐压阈值;
  • 峰值脉冲电流(Ipp):50A:基于8/20μs标准浪涌波形的最大峰值电流承受能力,可应对常见电源浪涌(开关切换、雷击感应);
  • 峰值脉冲功率(Ppp):600W:与Ipp对应(≈12V×50A),体现器件脉冲功率容量;
  • 反向漏电流(Ir):200μA:Vrwm=7V下的反向漏电流,属低漏电水平,不影响正常电路功耗;
  • 工作温度:-55℃~+175℃:覆盖工业级(-40+85℃)、汽车级(-40+125℃),甚至极端环境(如航空辅助电路)。

三、封装与物理特性

SMBJ7.0A-TP采用SMB(DO-214AA)表面贴装封装,适配小型化设计:

  • 尺寸紧凑:典型尺寸2.2mm×3.4mm×1.0mm,占用PCB面积小,适合高密度布局;
  • 焊接兼容:支持回流焊、波峰焊,焊接温度需符合IPC-A-610标准(峰值≤260℃,回流时间≤10s);
  • 极性标识:封装表面印型号,色环端为反向截止端(保护时击穿端),便于识别。

四、典型应用场景

结合参数特性,典型应用包括:

  1. 低压电源保护:5V/6V直流电源回路(MCU核心、传感器供电),防止开关浪涌/雷击损坏敏感元件;
  2. 工业控制电路:PLC I/O接口、工业传感器(温度/压力)的过压防护,适配-55~+175℃环境;
  3. 汽车电子模块:车载小功率控制器(车身控制、传感器接口)、USB接口浪涌防护,符合汽车级宽温;
  4. 消费电子接口:音频、USB Type-C接口的辅助浪涌防护(配合ESD二极管,应对静电+浪涌);
  5. 通信设备:小型基站、路由器电源/信号线路保护,提升抗干扰能力。

五、产品优势与选型建议

5.1 核心优势

  • 宽温可靠性:-55~+175℃远超普通TVS,适应极端环境;
  • 低漏电:200μA漏电流,不影响电路稳定性;
  • 高脉冲承受力:50A Ipp/600W Ppp,应对多数日常浪涌;
  • 小型化:SMB封装适配高密度PCB,降低设计难度;
  • 品牌品质:MCC参数一致性好,批次差异小,可靠性经市场验证。

5.2 选型建议

  • 电源电压:仅适配≤6V直流系统(Vrwm=7V留余量);
  • 浪涌需求:脉冲峰值≤50A可满足,更高电流需并联同型号器件;
  • 温度范围:工作温度在-55~+175℃内无需降额;
  • 封装匹配:表面贴装+空间有限时,SMB为最优选择。

六、使用注意事项

  1. 极性确认:单向TVS需严格匹配极性,接反会失效;
  2. 降额使用:脉冲频率≥1Hz时,功率降额至80%(480W),避免过热;
  3. 焊接规范:避免高温/长时间焊接,防止封装损伤;
  4. 并联设计:提升电流承受力需并联同批次器件,布局对称减少寄生电感。

总结

SMBJ7.0A-TP是一款高性价比单向TVS,以宽温、低漏电、高脉冲承受力为核心优势,适配低压系统过压防护。其SMB封装紧凑,广泛应用于工业、汽车、消费电子等领域,是敏感电路抗瞬态浪涌的可靠选择。

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