WMSIC Electronic Components

TWGMC SMF6.5A TVS Diode SMF6.5A

ModelSMF6.5A
PackageSOD-123W
BrandTWGMC
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
TWGMC SMF6.5A
Type
TWGMC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TWGMC
Electronic Component
SMF6.5A
Electronic Component
1
Package
SOD-123W
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.047g
Electronic Component
1
Channel Count
Electronic Component
Electronic Component
BM0265082556
Operating Temperature
55℃~+150℃
Voltage
11.2V
Current(Ir)
75uA
Voltage(VBR)
7.96V

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

SMF6.5A 单向瞬态抑制二极管(TVS)产品概述

一、产品核心定位与应用场景

SMF6.5A是台湾迪嘉(TWGMC)推出的单向瞬态抑制二极管(TVS),专为低电压电路的过压防护设计。其核心作用是在电路遭遇瞬态浪涌(如雷击、静电放电、电源开关噪声)时,快速导通并钳位电压,避免后端敏感器件(如MCU、传感器、通信接口)被击穿损坏。

该器件适配宽温、小型化、高可靠性的应用场景,典型领域包括:

  • 消费电子:智能手机/平板的USB接口、耳机孔过压保护;
  • 汽车电子:车载胎压监测、温度传感器的电源端防护;
  • 工业控制:PLC的IO接口、MCU电源模块的浪涌抑制;
  • 通信设备:路由器、交换机的端口防雷/防静电保护。

二、关键电气参数深度解析

SMF6.5A的参数设计精准匹配低电压电路需求,核心参数及实际意义如下:

1. 极性与截止/击穿电压

  • 单向极性:仅抑制正向瞬态脉冲(如电源正端的浪涌),适合极性明确的电路场景;
  • 反向截止电压(Vrwm)6.5V:电路正常工作时,器件可稳定承受的最大反向电压(漏电流仅75uA),为5V典型工作电压预留1.5V安全余量;
  • 击穿电压7.96V:反向电压超过此值时,器件快速击穿导通,启动过压防护。

2. 浪涌承受能力

  • 钳位电压11.2V:10/1000μs标准浪涌波形下,器件导通后可将电压钳位至11.2V(远低于多数敏感器件的最大耐压值,如MCU通常≤15V);
  • 峰值脉冲电流(Ipp)17.9A:对应波形下的最大可承受浪涌电流,能有效应对中等强度的雷击或静电放电;
  • 峰值脉冲功率(Ppp)200W:与钳位电压、浪涌电流直接关联((P=V_{钳位}×I_{pp})),验证了器件的浪涌耐受能力。

3. 环境适应性

  • 工作温度-55℃~+150℃:覆盖汽车发动机舱(-40℃~+125℃)、工业高温环境(≤150℃),满足严苛场景的可靠性要求。

三、封装与可靠性设计

SMF6.5A采用SOD-123W表面贴装封装,具备以下优势:

  • 小型化:尺寸仅约2.5mm×1.2mm×1.0mm,适配高密度PCB设计(如手机主板、小型传感器模块);
  • 热性能优异:封装结构优化了散热路径,支持150℃高温下的持续工作;
  • 焊接可靠性:兼容回流焊、波峰焊工艺,焊接后无虚焊风险,符合电子制造的标准化要求。

此外,器件通过了静电放电(IEC 61000-4-2)、浪涌(IEC 61000-4-5) 等国际标准测试,确保在实际应用中稳定可靠。

四、品牌与质量保障

台湾迪嘉(TWGMC)是专注于过压保护器件的专业厂商,SMF6.5A具备以下质量优势:

  • 环保合规:符合RoHS 2.0、REACH等国际环保标准,无铅无卤;
  • 汽车级认证:部分批次通过AEC-Q101汽车电子可靠性认证,适合车载场景;
  • 一致性好:批量生产的参数离散性小(如击穿电压公差≤±5%),降低电路设计风险。

五、典型应用方案示例

以车载胎压监测传感器(TPMS) 为例,SMF6.5A的应用逻辑如下:

  1. 电路位置:串联在TPMS传感器的电源输入端(与传感器并联);
  2. 正常工作:传感器供电电压为3.3V,远低于Vrwm 6.5V,器件截止,无漏电流干扰;
  3. 浪涌防护:若汽车点火瞬间产生12V瞬态浪涌,器件快速击穿,将电压钳位至11.2V,保护传感器内部MCU不被损坏;
  4. 环境适配:-40℃~+125℃的车载温度范围完全覆盖器件的工作温域。

总结

SMF6.5A是一款高性价比、宽温适配、小封装的单向TVS,精准解决了低电压电路的瞬态过压防护需求。其参数设计贴合实际应用场景,可靠性经过严苛测试验证,是消费电子、汽车电子、工业控制等领域的理想防护器件。

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