WMSIC Electronic Components

Jingdao Microelectronics SMF48CA

ModelSMF48CA
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Electronic SMF48CA
Type
Jingdao Microelectronics
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic
Electronic Component
SMF48CA
Electronic Component
1
Package
SOD-123FL
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.03g
Electronic Component
1
Electronic Component
BM0264086064
Operating Temperature
55℃~+150℃
Voltage
77.4V
Current(Ir)
1uA
Voltage(VBR)
58.9V
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.

晶导微电子SMF48CA TVS二极管产品概述

SMF48CA是晶导微电子推出的一款双向瞬态抑制二极管(TVS),采用SOD-123FL小型表面贴装封装,专为低压电路的浪涌防护设计,具备宽温适应性、低漏电流、高脉冲耐受等核心优势,广泛应用于消费电子、汽车电子、工业控制等领域。

一、产品基本属性

SMF48CA的核心基本信息清晰明确:

  • 品牌:晶导微电子(国内知名功率半导体厂商,专注TVS、MOS管等器件研发)
  • 器件类型:双向瞬态抑制二极管(TVS)
  • 型号:SMF48CA
  • 封装形式:SOD-123FL(表面贴装,小型化设计)
  • 防护方向:双向(无需区分正负极,安装便捷)

二、核心电气参数解析

SMF48CA的关键电气参数直接决定其防护性能,各参数的意义与规格如下:

  1. 反向截止电压(Vrwm):48V
    指电路正常工作时,TVS可承受的最大反向电压,确保静态下不导通,适配工作电压≤48V的电路系统(如24V工业电源、12V车载电路)。
  2. 钳位电压:77.4V
    浪涌电流通过时,TVS两端电压被钳位在该值,有效限制后端敏感器件(如MCU、传感器)的过压风险,避免击穿损坏。
  3. 峰值脉冲电流(Ipp):2.6A@10/1000μs
    10/1000μs为国际标准浪涌脉冲波形(前沿10μs、半峰值1000μs),该参数表示TVS在该波形下可承受的最大浪涌电流,能应对常见的瞬态过流事件(如雷击感应、电源开关浪涌)。
  4. 峰值脉冲功率(Ppp):200W@10/1000μs
    对应上述脉冲波形的最大耐受功率,反映了TVS的浪涌能量吸收能力,可有效防护中等强度的瞬态冲击(如IEC 61000-4-5标准下的2kV/1.2μs浪涌)。
  5. 击穿电压:58.9V
    反向电压超过该值时,TVS开始导通并进入钳位状态,是浪涌防护的起始触发点;与Vrwm(48V)的差值(约11V)确保了正常工作与防护的切换稳定性,避免误触发。
  6. 反向漏电流(Ir):1μA
    静态反向截止时的漏电流,数值极小(微安级),可忽略不计,避免对电路正常工作造成功耗影响或信号干扰(适合低功耗产品设计)。
  7. 工作温度范围:-55℃~+150℃
    覆盖极宽温度区间,远超普通TVS的温度上限(通常-40℃~+125℃),可适应工业级高低温环境(如汽车发动机舱、户外通信设备),可靠性更高。

三、封装与物理特性

SMF48CA采用SOD-123FL小型表面贴装封装,具备以下实用特点:

  • 体积紧凑:典型尺寸约为2.0mm(长)×1.25mm(宽)×1.0mm(高),适合高密度PCB布局,满足便携设备(如智能手表、蓝牙耳机)、小型电子模块的空间需求;
  • 环保合规:符合RoHS无铅无卤标准,满足全球市场的环保要求,可直接用于出口产品;
  • 双向设计:无需区分正负极,安装时无需额外判断方向,简化生产流程,降低装配错误风险(尤其适合批量生产)。

四、关键特性与优势

SMF48CA在同类产品中具备显著的性能优势:

  1. 宽温适应性:-55℃~+150℃的工作温度范围,可覆盖汽车、工业、户外通信等极端环境场景,无需额外设计温度补偿电路;
  2. 低功耗设计:仅1μA的反向漏电流,静态下几乎不消耗功率,适配低功耗产品(如物联网传感器、电池供电设备)的功耗要求;
  3. 快速响应:TVS的典型响应时间在纳秒级(ns),远快于压敏电阻(μs级),能及时抑制瞬态浪涌,保护敏感元器件(如高精度传感器、高速MCU);
  4. 双向防护:针对正负方向的浪涌脉冲均能有效钳位,适合差分信号接口(如CAN总线、USB Type-C、以太网)的防护需求,无需并联两个单向TVS;
  5. 高可靠性:晶导微电子的工艺保障,器件一致性好,脉冲耐受能力稳定,经批量测试验证,可满足工业级产品的可靠性要求(MTBF≥10^6小时)。

五、典型应用领域

SMF48CA的性能特点使其广泛应用于以下场景:

  1. 汽车电子:车载CAN总线接口、胎压监测传感器、车载娱乐系统的浪涌防护(适应汽车-40℃~+125℃的温度环境);
  2. 消费电子:智能手机、平板、智能穿戴设备的USB接口、HDMI接口防护,以及低功耗蓝牙模块的浪涌防护;
  3. 工业控制:PLC控制器、工业传感器(如压力、流量传感器)、现场总线接口的过压防护(适应工业级高低温与电磁干扰环境);
  4. 通信设备:路由器、交换机的以太网端口、光纤收发器的信号接口防护;
  5. 电源系统:低压直流电源(如12V、24V电源)的输出端浪涌防护,防止瞬态过压损坏后端负载(如LED灯、电机)。

综上,SMF48CA作为一款高性价比的双向TVS二极管,凭借宽温范围、低漏电流、小封装等优势,成为低压电路浪涌防护的理想选择,可满足多领域的可靠性防护需求,适合批量应用于各类电子系统。

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