WMSIC Electronic Components

TA-I Technology CFS12V3T7R0

ModelCFS12V3T7R0
Package1206
BrandElectronic Component
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
CFS12V3T7R0
Type
TA-I Technology
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
CFS12V3T7R0
Electronic Component
1
Electronic Component
1.6mm
Package
1206
Type
SMD Fuse
Electronic Component
Non-Resettable Fuse
Electronic Component
0.03g
Electronic Component
3.2mm
Electronic Component
0.6mm
I2t
5.684
Electronic Component
1
Electronic Component
50A
Electronic Component
BM0257274217
Operating Temperature
20℃~+105℃

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

CFS12V3T7R0贴片式保险丝产品概述

CFS12V3T7R0是大毅科技推出的1206封装贴片保险丝,专为低电压直流电路的过流保护设计,核心覆盖7A额定电流、32V额定电压场景,兼具小型化、高可靠性与宽温适应性,广泛适配汽车电子、消费电子、工业控制及IoT设备等领域的电路防护需求。

一、产品定位与核心应用场景

这款保险丝定位于中小功率低电压电路的安全防护器件,核心解决电路短路、过载时的元器件损坏、起火等风险,典型应用场景包括:

  • 汽车电子:车载中控屏、胎压监测模块(TPMS)、车灯控制电路、小型车载电源;
  • 消费电子:笔记本电池保护板、手机快充模块(PD/QC协议)、无线充电底座;
  • 工业/IoT:小型PLC电源模块、传感器节点供电、WiFi路由器电源;
  • 通信设备:5G小基站室内单元、智能网关电源。

这些场景均对保险丝的小型化、低电压适配、宽温稳定性有明确要求,CFS12V3T7R0的参数与封装恰好匹配。

二、关键性能参数深度解析

CFS12V3T7R0的核心参数围绕“低电压过流保护”优化,各参数的实际意义如下:

  1. 额定电流7A:25℃环境下允许持续通过的最大电流,选型需结合环境温度降额(如105℃时降额至4.9A);
  2. 额定电压32V:适配直流32V及以下电路,超压会导致熔断时无法安全分断(产生电弧);
  3. 熔断I²t值5.684A²s:反映熔断所需能量阈值(公式(I^2t=5.684)),兼顾“快速保护”(10A过流≈0.057s熔断)与“浪涌耐受”(5A过流≈0.227s熔断);
  4. 分断能力50A:32V下能安全断开的最大短路电流,满足电路短路时的防火要求;
  5. 工作温度-20℃~+105℃:覆盖汽车舱内高温(夏季85℃)、北方低温(冬季-20℃)及工业环境波动;
  6. 1206封装(3.2mm×1.6mm):贴片无引线设计,适配自动化SMT贴装,比传统插件节省70%以上PCB空间。

三、封装与工艺技术优势

CFS12V3T7R0采用1206标准封装,结合大毅科技工艺积累,具备以下优势:

  • 贴装兼容性:支持回流焊、波峰焊(焊接温度220-260℃),贴装良率≥99.5%;
  • 材料可靠性:高精度合金熔丝,参数偏差≤±10%,批量生产一致性好;
  • 抗振稳定性:符合汽车级振动标准(10-2000Hz,加速度1.5g),适合车载振动环境;
  • 环保合规:通过RoHS 2.0、REACH认证,无铅无卤,满足国际市场准入。

四、品牌与可靠性保障

大毅科技作为汽车电子/工业控制领域资深厂商,CFS12V3T7R0经多重验证:

  • 质量认证:通过ISO/TS 16949汽车质量体系、AEC-Q200汽车电子标准;
  • 可靠性测试:完成温度循环(-40℃~125℃,1000次)、湿度测试(85℃/85%RH,1000h),故障率≤0.1%/1000h;
  • 应用验证:累计出货超千万颗,在多家汽车零部件、消费电子品牌量产产品中稳定应用。

五、选型与使用注意事项

为确保防护效果,选型使用需注意:

  1. 电流降额:环境温度>25℃时,按温度系数降额(如105℃降额至7A×0.7);
  2. 浪涌匹配:开机浪涌I²t需<5.684,可串联NTC热敏电阻抑制浪涌;
  3. 电压限制:严禁在32V以上电路使用,避免分断失效;
  4. 贴装规范:焊盘尺寸推荐3.5mm×1.8mm,避免焊接应力过大;
  5. 故障排查:熔断后需排查短路/过载原因,更换时用同型号,勿用导线替代。

总结

CFS12V3T7R0凭借小型化封装、宽温适配、熔断速度与浪涌耐受平衡的特点,成为低电压电路过流保护的高性价比选择,尤其适合汽车电子、消费电子等对体积与可靠性要求严格的领域,是工程师选型的可靠方案。

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