WMSIC Electronic Components

Jingdao Microelectronics SMF7.5CA

ModelSMF7.5CA
PackageSOD-123FL
BrandElectronic
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
Electronic SMF7.5CA
Type
Jingdao Microelectronics
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
SMF7.5CA
Electronic Component
1
Package
SOD-123FL
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.03g
Electronic Component
1
Electronic Component
BM0264086081
Operating Temperature
55℃~+150℃
Voltage
12.9V
Current(Ir)
50uA
Voltage(VBR)
9.21V
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.

SMF7.5CA(SOD-123FL)产品概述

一、产品简介

SMF7.5CA 是晶导微电子推出的一款双向瞬态电压抑制二极管(TVS),采用 SOD-123FL 小尺寸封装,专为承受雷击、浪涌及开关瞬变而设计。器件在正常工作电压下呈高阻抗,遇到超出阈值的瞬态过电压时迅速导通,将能量钳位到安全水平,保护下游电路元件免受损坏。

二、主要参数

  • 极性:双向(bidirectional)
  • 反向截止电压 Vrwm:7.5 V
  • 击穿电压 VBR:9.21 V(典型)
  • 钳位电压 Vc:12.9 V(典型,Ipp 条件下)
  • 峰值脉冲电流 Ipp:15.5 A @ 10/1000 µs
  • 峰值脉冲功率 Ppp:200 W @ 10/1000 µs
  • 反向电流 Ir:50 µA(在 Vrwm 下)
  • 工作温度:-55 ℃ ~ +150 ℃
  • 封装:SOD-123FL
  • 类型:TVS(瞬态抑制)

三、性能与特点

  • 高能量吸收能力:符合 10/1000 µs 浪涌波形指标,Ppp 可达 200 W,适合对抗高能量冲击(如雷击脉冲)。
  • 低钳位电压:在峰值脉冲条件下典型钳位电压 12.9 V,有利于将过压限制在可接受范围内,降低被保护电路应力。
  • 低漏电流:Vrwm 条件下 Ir 仅 50 µA,能在不影响电路正常工作情况下长期并联保护。
  • 宽温度范围:-55 ℃ 至 +150 ℃,适用于工业及苛刻环境。
  • 小型封装:SOD-123FL 体积小,便于在受限空间内布局与自动贴装。

四、典型应用场景

  • 工业电源及控制模块的端口保护(包括电源输入、继电器驱动回路等)。
  • 通信与数据接口(双向保护适用于差分或交流耦合线路)。
  • 车载、仪表、楼宇自控等对浪涌抗扰度要求较高的系统(注意按系统最大持续电压选型)。
  • 电池管理、充电器、逆变器外围防护。

五、封装与装配建议

  • SOD-123FL 适合回流焊工艺,建议遵循晶导微电子提供的焊接曲线以避免过热损伤。
  • 布局时将 TVS 端子与被保护线路尽量靠近,走线最短以减小串联电感,提高钳位效率。
  • 对于高能量浪涌,考虑在 PCB 上增加散热铜箔或热沉以提升能量分散能力。
  • 典型存储与使用环境应避免潮湿和强腐蚀性气体,静电敏感,操作时注意防静电措施。

六、选型与注意事项

  • 确认系统最大持续工作电压不超过 Vrwm(7.5 V),并留有裕度。
  • 核查钳位电压是否能保护下游最脆弱器件(钳位 12.9 V 为典型值,实际应考虑浪涌电流下的变化)。
  • 若应用频繁承受高能量冲击,应评估器件的寿命与是否需要并联或级联保护方案。
  • 关注器件的极性与连线方式;双向器件适用于正负极性都有可能出现的过电压情形。

SMF7.5CA 结合小型封装与较高的浪涌吸收能力,适用于需要紧凑保护解决方案且对浪涌能量有一定要求的应用场景。选型时请参考完整数据手册并依据实际工况校核热与冲击能力,必要时与晶导微电子技术支持联系以获得更详细的应用建议。

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