WMSIC Electronic Components

Littelfuse 0440008.WRA 0440008

Model0440008.WRA
Package1206
BrandLittelfuse
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+

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Technical data

Product details

19 specifications

Core information

Product name
Littelfuse 0440008.WRA
Type
LITTELFUSE
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LITTELFUSE
Electronic Component
0440008.WRA
Electronic Component
1
Package
1206
Electronic Component
Non-Resettable Fuse
Electronic Component
0.387g
Electronic Component
1
Electronic Component
50A
Electronic Component
BM0265571697
Operating Temperature
55℃~+150℃
Voltage
32V
Current
8A
Voltage (AC)
32V
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.

Littelfuse 0440008.WRA 贴片快断保险丝产品概述

一、核心身份与品牌定位

Littelfuse 0440008.WRA是美国力特(Littelfuse)推出的汽车级贴片快断保险丝,属于该品牌经典044系列产品。Littelfuse作为全球电路保护领域龙头,产品以高可靠性、宽温适应性著称,尤其在汽车电子、工业控制等严苛场景中广泛应用。0440008.WRA延续品牌技术基因,针对小型化、高可靠电路保护需求设计,是汽车及工业领域的主流选型之一。

二、关键技术参数解析

该型号的核心参数直接决定应用边界,关键指标如下:

  1. 额定电流:8A(标称值),是保险丝正常工作的最大持续电流,超过此值会触发熔断;
  2. 额定电压:32V(AC/DC兼容),即保险丝可安全承载的最大工作电压,故障时能在该电压下可靠分断;
  3. 分断能力:50A(@32V),表示在32V电压下,保险丝可安全断开的最大故障电流(50A),避免电弧持续燃烧损坏周边电路;
  4. 工作温度范围:-55℃~+150℃,覆盖汽车级环境极端温度(如发动机舱高温、低温地区启动),满足严苛工况需求;
  5. 熔断特性:快断(Fast Acting),对过流响应速度快,适合敏感半导体器件等对过流保护要求高的场景。

三、封装与工艺特性

  1. 封装形式:1206(英制)/3216(公制)贴片封装,尺寸紧凑(3.2mm×1.6mm),适配自动化表面贴装工艺(SMT),可直接集成于高密度PCB板,满足小型化设备布局需求;
  2. 材质与结构:采用陶瓷基体,耐高温(匹配150℃工作温度)、机械强度高,抗振动、抗冲击性能优异(适合汽车行驶中的振动环境);
  3. 焊盘设计:优化的SMD焊盘结构,确保焊接可靠性,兼容无铅回流焊、波峰焊等主流工艺,降低焊接不良率。

四、典型应用场景

基于参数与认证特性,0440008.WRA的核心应用集中在以下领域:

  1. 汽车电子:车载信息娱乐系统(车机、导航)、动力辅助单元(EPS电子助力转向)、传感器电路(胎压监测、摄像头模块)、车身控制模块(BCM)等,适配AEC-Q200汽车级要求;
  2. 工业控制:小型PLC、传感器节点、工业物联网(IIoT)终端,利用宽温特性适应车间/户外环境;
  3. 消费电子:小型智能设备(如便携式医疗仪器、无人机控制单元),满足小体积、高可靠的保护需求。

五、可靠性与认证保障

该型号的可靠性通过多重验证:

  1. AEC-Q200认证:符合汽车电子委员会(AEC)Q200标准,经过温度循环、湿度老化、振动冲击等严苛测试,确保10年以上汽车级寿命;
  2. 陶瓷材质优势:相比塑料封装,陶瓷基体热稳定性更好,避免高温变形失效,抗化学腐蚀能力强;
  3. 熔断一致性:快断特性一致性高,1.5倍过流时几秒内熔断,3倍过流时毫秒级熔断,精准控制熔断时间。

六、选型与应用注意事项

  1. 型号匹配:调整电流可选择同系列0440005.WRA(5A)、0440010.WRA(10A),电压需不超过32V;
  2. 焊接工艺:建议无铅回流焊,峰值温度≤260℃,回流时间≤10秒,符合Littelfuse官方规范;
  3. 布局注意:避免靠近发热元件(如功率MOS管),预留散热空间,防止环境温度过高触发误熔断。

该产品凭借紧凑封装、宽温可靠性及汽车级认证,成为中小功率电路保护的高性价比选型,广泛覆盖汽车、工业、消费电子等多领域需求。

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