WMSIC Electronic Components

Jingdao Microelectronics SMF64CA

ModelSMF64CA
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 Option 131683

Availability on request

Technical data

Product details

19 specifications

Core information

Product name
Electronic SMF64CA
Type
Jingdao Microelectronics
Minimum package
3000

Technical parameters

Electronic Component
Electronic
Electronic Component
SMF64CA
Electronic Component
1
Package
SOD-123FL
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.03g
Electronic Component
1
Channel Count
Electronic Component
Electronic Component
BM0265659177
Voltage
103V
Current(Ir)
1uA
Voltage(VBR)
78.6V
Electronic Component
3000
Power(Ppp)
200W@10/1000us
Current(Ipp)
1.7A@10/1000us

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

SMF64CA 瞬态抑制二极管(TVS)产品概述

SMF64CA是晶导微电子推出的双向瞬态抑制二极管(TVS),属于SMF系列小功率防护器件,专为电路中的瞬态过压(如静电、雷电浪涌、开关冲击)设计,具备体积小、响应快、钳位精准等核心优势,适配消费电子、通信设备等高密度PCB场景。

一、产品基本定位

SMF64CA为单路双向TVS,核心功能是通过“快速击穿-钳位电压-泄放能量”的机制,保护后端敏感元器件(如IC、传感器、接口芯片)免受过压损坏。产品采用表面贴装封装,无需区分正负极,简化了电路设计与生产流程,是中低压电路防护的高性价比选择。

二、核心电气参数详解

SMF64CA的参数经过严格校准,适配多数12V~60V稳态电路的防护需求,关键指标说明如下:

1. 反向截止电压(Vrwm):64V

是器件在反向偏置下长期可承受的最大直流电压,此时TVS处于截止态,漏电流极小(仅1μA),不会干扰电路正常工作。该参数需匹配电路稳态电压(如电源输出、信号幅值),确保器件“不主动导通”。

2. 击穿电压(Vbr):78.6V

是TVS从截止态转为导通态的临界电压。当线路电压超过此值时,器件快速击穿(响应时间ns级),启动过压防护。击穿电压与Vrwm的差值(约14.6V)设计合理,避免了“软击穿”或过度提前导通的问题。

3. 钳位电压(Vc):103V

是器件在峰值脉冲电流下的最大端电压(测试条件:1.7A脉冲、10/1000μs波形)。钳位电压是防护核心——需低于后端负载的最大耐受电压(如芯片耐压),确保负载在过压时不被击穿。

4. 脉冲耐受参数

  • 峰值脉冲电流(Ipp):1.7A(10/1000μs波形):10/1000μs是模拟雷电感应浪涌的标准波形(上升10μs、半峰值1000μs),1.7A峰值可应对常见浪涌强度;
  • 峰值脉冲功率(Ppp):200W(同波形):反映器件单次浪涌耐受能力,适用于中等强度瞬态过压场景。

5. 反向漏电流(Ir):1μA

截止态漏电流极小,不会增加电路功耗或影响信号完整性,确保稳态工作的稳定性。

三、封装与物理特性

SMF64CA采用SOD-123FL表面贴装封装,具备以下特点:

  • 体积小巧:典型尺寸约2.3mm×1.2mm×1.0mm,适配智能手机、小型通信模块等高密度PCB;
  • 无极性设计:双向导通无需区分正负极,布线更简单;
  • 自动化兼容:贴片式封装支持SMT自动化生产,提高效率;
  • 环保合规:符合RoHS、REACH标准,满足绿色电子要求。

四、典型应用场景

SMF64CA的参数与封装特性使其适配多领域中低压防护,典型应用包括:

  1. 消费电子:智能手机充电口(USB Type-C)、蓝牙耳机数据接口、智能手表电源防护;
  2. 通信设备:路由器以太网接口、光模块射频接口、交换机端口浪涌防护;
  3. 工业控制:传感器节点、PLC输入输出接口的瞬态过压防护;
  4. 车载电子:12V车载系统USB充电口、车载显示屏接口防护(需匹配车载环境等级)。

五、品牌与可靠性

晶导微电子是国内功率半导体领域的成熟厂商,SMF64CA经过严格可靠性测试:

  • 宽温测试:-55℃~+150℃循环,性能无衰减;
  • 湿度测试:85℃/85%RH环境下长期工作,漏电流稳定;
  • 脉冲寿命:多次施加额定脉冲后,参数无明显变化;
  • ESD防护:符合IEC 61000-4-2标准,可应对±8kV接触放电、±15kV空气放电。

产品响应速度达ns级,能在瞬态过压发生的极短时间内启动防护,有效保护敏感元器件。

SMF64CA凭借高性价比、小体积与可靠防护能力,成为中低压电路瞬态过压防护的优选器件,适配多种终端产品的设计需求。

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