WMSIC Electronic Components

KUU SMF6.8CA

ModelSMF6.8CA
PackageSOD-123FL
BrandKUU
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
KUU SMF6.8CA
Type
KUU
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
KUU
Electronic Component
SMF6.8CA
Electronic Component
1
Package
SOD-123FL
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.038g
Electronic Component
1
Electronic Component
BM0231142811
Operating Temperature
55℃~+150℃
Voltage
11.2V
Current(Ir)
250uA
Voltage(VBR)
7.98V
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.

SMF6.8CA(KUU)产品概述

SMF6.8CA 是 KUU 品牌的一款双向瞬态电压抑制器(TVS),采用 SOD-123FL 表面贴装封装,专为抑制瞬态过电压和浪涌脉冲设计。器件在宽温区间(-55℃ 到 +150℃)内保持稳定工作,适用于需要高能量吸收和双向浪涌保护的电子系统。

一、主要电气参数概览

  • 极性:双向(Bidirectional),可同时对正、负极性脉冲进行钳位保护,适用于交流或极性可逆线路。
  • 反向截止电压 Vrwm:6.8 V(工作电压参考值)。
  • 钳位电压(典型):11.2 V(在 10/1000 μs 浪涌条件下测得的钳位电压)。
  • 峰值脉冲电流 Ipp:17.9 A(按 10/1000 μs 波形)。
  • 峰值脉冲功率 Ppp:200 W(按 10/1000 μs 波形)。
  • 击穿电压 Vbr:7.98 V(器件进入雪崩导通区的参考值)。
  • 反向电流 Ir:250 μA(通常为在 Vrwm 或相应测试电压下的最大泄漏电流)。
  • 工作温度范围:-55℃ 至 +150℃。
  • 封装:SOD-123FL 表面贴装小型封装,便于高密度 PCB 布局。

二、功能特点与优势

  • 双向保护:对正负瞬态过电压均提供对称钳位,适合交流信号线、对地可反向的电源或通信线路。
  • 高能量吸收能力:在 10/1000 μs 浪涌波形下可承受 200 W 峰值功率和 17.9 A 峰值脉冲电流,能有效吸收瞬时高能量冲击。
  • 低钳位电压:11.2 V 的钳位电压在多数 6.8 V 工作电压场合下能有效限制过冲,保护后级器件免受过压损伤。
  • 宽温区可靠性:-55℃ 到 +150℃ 的工作范围适应工业级和严苛环境应用。
  • 小型封装:SOD-123FL 提供较低寄生电感与紧凑安装面积,适合表贴批量生产与手工检修。

三、典型应用场景

  • 通信设备与基站接口防护(线对、信号线)。
  • 工业控制、测量设备的电源和信号输入端保护。
  • 智能电表、楼宇自控和物联网终端的浪涌防护。
  • 交流或极性可逆线路的瞬态抑制场合。
  • 需要高温稳定性的嵌入式或户外设备(在确认认证要求后使用于汽车电子等场合)。

四、选型与设计注意事项

  • 极性匹配:双向 TVS 对称钳位,适用于交流或可反向电压场合;若用于恒定直流且只需单向保护,可考虑单向型 TVS 以获得更低的反向泄漏与更佳钳位性能。
  • Vrwm 与被保护电压:选择 Vrwm(6.8 V)应比被保护电路的正常工作电压略高,以避免误导通;同时需确保钳位电压(11.2 V)在可接受的安全范围内。
  • 能量能力与脉冲波形:标称 Ipp/Ppp 基于 10/1000 μs 脉冲波形,适合通信与电源浪涌试验。若系统遭受不同波形(如 IEC 8/20 μs),需参考相应试验条件下的性能或选择更高能量等级器件。
  • 漏电流影响:最大反向泄漏 250 μA 在低功耗或高精度测量电路中可能造成影响,应评估其对系统待机能耗和测量精度的影响。
  • PCB 布局:将 TVS 尽量靠近受保护端口或接地端放置,缩短走线并提供低阻抗接地回路;若可能,使用足够宽的地铜并减少通过孔数以降低寄生电感与热阻。

五、封装与可靠性

SOD-123FL 封装兼顾体积与热散能力,适合表贴自动化生产。器件额定工作温度高达 +150℃,对高温环境具备良好适应性,但在苛刻振动、冲击或长期潮湿环境中,建议进行可靠性验证与加固处理。在用于汽车或需符合专项认证(如 AEC、IEC)场合时,请确认相应的认证与测试报告。

六、使用与测试建议

  • 建议在实际应用中做浪涌注入试验以验证保护效果,使用与预期脉冲波形一致的测试条件(如 10/1000 μs)进行验证。
  • 对于长期稳定性评估,应关注在最高工作温度下的泄漏电流及钳位电压漂移。
  • 在多通道设计中,如有级联保护需求,可与熔断器、NTC 或限流电阻配合以提高整体防护能力。

如需更多技术资料(如 I-V 特性曲线、冲击测试曲线、封装尺寸图或可信赖性试验报告),请提供采购需求或联系供应商获取完整版数据手册。

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