WMSIC Electronic Components

DOWO SMF6.0CA

ModelSMF6.0CA
PackageSOD-123
BrandDOWO
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
DOWO SMF6.0CA
Type
DOWO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
DOWO
Electronic Component
SMF6.0CA
Electronic Component
1
Package
SOD-123
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.039g
Electronic Component
1
Electronic Component
BM0249905766
Operating Temperature
55℃~+150℃
Voltage
10.3V
Current(Ir)
400uA
Voltage(VBR)
6.67V
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.

SMF6.0CA 瞬态抑制二极管(双向)产品概述

一、产品简介

SMF6.0CA 是一款基于 TVS(Transient Voltage Suppressor)技术的双向瞬态电压抑制二极管,封装为 SOD-123,适用于对双向脉冲/浪涌有保护需求的线路。由 DOWO(东沃)出品,该器件专为抑制雷击、开关操作产生的瞬态过电压以及脉冲干扰而设计,能够在瞬间吸收大能量脉冲,保护下游敏感电子元件不被击穿或破坏。

主要参数一览:

  • 极性:双向(Bidirectional)
  • 反向截止电压 Vrwm:6 V
  • 击穿电压(典型):6.67 V
  • 钳位电压 VC(Ipp 条件下):10.3 V
  • 峰值脉冲电流 Ipp:19.42 A (波形 10/1000 µs)
  • 峰值脉冲功率 Ppp:200 W(10/1000 µs)
  • 漏电流 Ir:400 µA(在 Vrwm 条件下)
  • 工作温度范围:-55 ℃ ~ +150 ℃
  • 封装:SOD-123

二、性能亮点

  • 高能量吸收能力:在标准 10/1000 µs 浪涌测试下,器件可承受高达 19.42 A 的峰值脉冲电流,对应峰值脉冲功率为 200 W,能有效钳制高能量冲击。
  • 低钳位电压:在 Ipp 条件下钳位电压约为 10.3 V,有助于降低受保护电路承受的过压幅度,提升后级器件的安全裕度。
  • 宽温度适应性:-55 ℃ 到 +150 ℃ 的工作温度覆盖工业级应用环境,适合温度变化较大的场景。
  • 双向保护:对正负方向的瞬态电压均能进行有效钳制,适用于电源双向、信号线、差分线路等需要双极性保护的场合。
  • 紧凑封装:SOD-123 封装体积小,便于高密度布板和空间受限的应用,同时具备良好的实际装配兼容性(适配常见 SMT 工艺)。

三、典型应用场景

  • 通信接口保护:如电话线、RS-485、CAN 总线等需要双向保护的差分或信号线。
  • 工业控制设备:PLC 输入/输出端子、传感器线路、控制总线等,抵御雷电或开关引起的浪涌。
  • 消费电子与仪器仪表:电源输入线、外部接口的瞬态抑制,保护主板与外围模块。
  • 电源逆向/浪涌保护:适用于中低压直流或交流线路的双极性浪涌抑制(注意系统电压须匹配 Vrwm)。

四、封装与安装建议

  • 封装类型:SOD-123,适合表面贴装工艺。该封装体积小,便于在受限空间内进行布置。
  • 焊接工艺:建议遵循制造商给出的回流焊曲线进行焊接,避免长时间高温暴露造成器件热应力。若需波峰焊或手工焊接,注意热冲击控制。
  • 布局注意事项:
    • 将 TVS 尽量靠近需保护的端口或器件放置,以缩短引线和走线,降低串联感抗,提高抑制效果。
    • 对于需接地的单端保护,将器件一端接到地(或参考地);双向应用则将器件并联于两端之间,确保双向钳位。
    • 在高能量应用中,保证 PCB 有足够的散热铜箔和可靠的焊盘设计,以便热量快速传导。

五、选型与使用要点

  • 匹配 Vrwm 与系统工作电压:选择 Vrwm(6 V)应高于系统正常工作电压,但低于下游器件能承受的最高安全电压。
  • 注意钳位电压与后级耐压:VC=10.3 V 为典型钳位值,确认下游元件在该电压下能安全承受短时冲击。
  • 考虑漏电流影响:Ir 为 400 µA,在需要超低泄漏的电路(如精密传感或电池供电)中需评估对电路静态功耗的影响。
  • 能量能力与波形匹配:Ipp 与 Ppp 给出了在 10/1000 µs 波形下的能力,若实际脉冲波形不同(如 8/20 µs),需参考厂商完整数据手册或进行验证。
  • 环境与可靠性:若用于严苛或汽车级应用,请咨询供应商关于可靠性测试(如热循环、冲击振动、寿命)和是否通过相应认证的信息。

六、常见故障与维护建议

  • 若器件在多次大能量浪涌后出现性能退化或短路,应及时更换。TVS 作为一次性吸收高能量的保护元件,在遭遇超额能量后可能不可恢复。
  • 在实际使用中,若发现器件漏电流异常增大或钳位电压明显升高,应检查是否受到焊接热损伤或持续过压应力导致的器件损坏。
  • 设计预留合适的维修更换空间与检测点,便于后期故障排查与更换操作。

七、订购与型号提醒

常以 SMF6.0CA 为型号识别,订购时请注明品牌(DOWO/东沃)、封装(SOD-123)以及完整的批号和交付要求。若对器件的详细电气特性、包装、回流焊规范或可靠性数据有更高要求,建议向东沃索取完整数据手册与认证资料以便验证。

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