WMSIC Electronic Components

Slkor SMF12CA

ModelSMF12CA
PackageSOD-123FL
BrandSLKOR
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
Slkor SMF12CA
Type
SLKOR
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SLKOR
Electronic Component
SMF12CA
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
BM0227676509
Voltage
19.9V
Current(Ir)
2.5uA
Voltage(VBR)
14.7V
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.

SMF12CA 产品概述

一、概述与定位

SMF12CA 是 Slkor(萨科微)推出的一款双向瞬态电压抑制器(TVS),针对 12V 级别电源与信号线的瞬态浪涌保护而设计。器件采用 SOD-123FL 表面贴装封装,体积小、响应快,适合对板上空间与自动贴装兼容的应用场景。典型保护性能如下:钳位电压 19.9V(Ipp 条件下)、峰值脉冲功率 200W(10/1000µs)、峰值脉冲电流 10.1A。

二、主要参数汇总

  • 反向截止电压 Vrwm:12V(工作电压)
  • 反向击穿电压 VBR:典型 13.3V(器件测试/保证值可达 14.7V)
  • 钳位电压 VC:19.9V(在 Ipp 测试条件下)
  • 峰值脉冲功率 Pppm:200W(10/1000µs)
  • 峰值脉冲电流 Ipp:10.1A
  • 反向漏电流 Ir:≤2.5µA
  • 极性:双向(Bi-directional)
  • 封装:SOD-123FL
  • 品牌:Slkor(萨科微)

三、产品特点

  • 响应速度快:作为 TVS 器件,能在纳秒级响应过电压瞬变,将瞬态能量快速钳位到安全电平,保护后级电路。
  • 低漏电流:在 Vrwm=12V 条件下,漏电流小于 2.5µA,有利于低功耗系统的长期可靠运行。
  • 双向保护:对交流或反向可能出现的击穿同样有效,适用于交流/差分线或可能出现正负脉冲的场合。
  • 小型封装:SOD-123FL 考虑到空间与贴装工艺,便于自动化生产并兼容多数 SMT 工艺。

四、典型应用场景

  • 汽车电子(12V 辅助电源总线的浪涌保护,注意车规级要求另行确认)
  • 工业控制设备的电源与信号线上浪涌抑制
  • 安防、视频监控和通信设备的接口保护
  • 消费类电子 12V 电源模块、外设接口的过压保护

五、典型接法与设计注意

  • 双向 TVS 常并联于被保护回路两端:对直流 12V 系统,可并联于电源正负之间;对信号线或差分线,则并联在差分两端。
  • 钳位电压 19.9V:在设计时需评估被保护器件在该钳位电压下的耐压能力,确保后级元件不会因钳位电压而受损。
  • 功率与热管理:200W(10/1000µs)为脉冲能量指标,不能代表持续功耗能力;若频繁受冲击,需考虑更大功率的 TVS 或外部限流/吸收网络。
  • 漏电与待机功耗:Ir≤2.5µA 适用于对待机能耗敏感的系统,但实际系统温度升高时漏电会增加,需在最坏工况下验证。

六、选型与可靠性建议

  • 若工作电压长期接近 12V,应选择 Vrwm 与系统稳压充分匹配的器件,避免常态进入击穿区。
  • 对于更强浪涌(如汽车负载切换、电源反接等)场景,考虑更高 Ipp 与更高能量等级的 TVS 或并联多个器件并配合限流电阻。
  • 在高温或恶劣环境下,优先参考厂方完整数据手册中的温度特性与可靠性试验结果,必要时进行样机验证。

七、封装与焊接注意

SOD-123FL 适合回流焊工艺;在实际装配时应遵循厂方推荐的回流温度曲线与焊盘尺寸,避免过热或焊接应力导致封装损伤。同时,避免在未保护状态下承受反复大能量冲击以延长器件寿命。

总结:SMF12CA 提供了针对 12V 级别系统的快速、低漏电、双向浪涌保护,适合空间受限且需表贴组装的场合。在使用时需关注钳位电压对应的后级耐压、实际脉冲能量与热耗散,并根据系统冲击强度选择合适的功率余量。若需更详细的电气特性曲线或回流焊规范,可参考厂方数据手册或联系 Slkor 技术支持。

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