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Littelfuse 0440005.WRA 0440005
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Littelfuse 0440005.WRA
- Type
- LITTELFUSE
- Minimum package
- 3000
Technical parameters
- Electronic Component
- LITTELFUSE
- Electronic Component
- 0440005.WRA
- Electronic Component
- 1
- Electronic Component
- 1.6mm
- Package
- 1206
- Type
- SMD Fuse
- Electronic Component
- Non-Resettable Fuse
- Electronic Component
- 0.048g
- Electronic Component
- 3.2mm
- Electronic Component
- 0.835mm
- I2t
- 4.761
- Electronic Component
- 1
- Electronic Component
- 50A
- Electronic Component
- BM0227714148
- Operating Temperature
- 55℃~+150℃
- Voltage
- 63V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
0440005.WRA 产品概述
一. 产品简介
0440005.WRA 是 Littelfuse（美国力特）的一款贴片式快速熔断保险丝，采用 1206（3.2 × 1.63 × 0.835 mm）封装，陶瓷本体并以卷带（T/R）方式提供，专为对响应速度和空间要求较高的电路保护设计。标称额定电流为 5A，适用于汽车及工业等对瞬态保护有严格要求的场景。
二. 主要参数
- 封装：1206 SMD（3.2 × 1.63 × 0.835 mm）
- 类型：快速熔断（Fast Acting），贴片式（SMD）
- 额定电流：5 A
- 分断能力（Interrupt）：50 A
- 熔断 I2t：4.761（单位常为 A²s，具体以厂方资料为准）
- 额定电压：资料中出现 63V，另有描述为 32V；采购与设计时请以厂方最新规格书为准并确认额定电压版本
- 工作温度：-55 ℃ 至 +150 ℃
- 本体材质：陶瓷，适合高温及高能量吸收场合
三. 特性与优势
- 小尺寸：1206 封装便于在受限空间内实现过流保护，适合高密度 PCB 布局。
- 快速动作：Fast Acting 类型在短时过流时能迅速切断，保护下游器件免受损坏。
- 高温耐受：-55 ~ +150 ℃ 的宽工作温度范围，满足汽车电子、工业环境的苛刻温度要求。
- 高分断能力：50 A 的分断能力可应对瞬时较高短路电流，降低并联保护器件受损风险。
- 陶瓷结构：高温和能量吸收性能优于常规环氧封装，适合需要高热稳定性和耐冲击的应用。
四. 典型应用场景
- 汽车电子：车载控制单元（ECU）、传感器电源、车灯、信息娱乐系统等的过流保护。
- 电源管理：DC-DC 转换器、板级电源输入口与分支回路保护。
- 电池系统与便携设备：短路保护、充电电路保护（应核对额定电压版本）。
- 工业控制与通信设备：保护敏感模块免受短路与过载冲击。
五. 选型与使用建议
- 校核额定电压：文档中同时出现 63V 与 32V 说明可能存在不同电压版本或描述不一致，设计与采购前务必以 Littelfuse 官方规格书和订单号（0440005.WRA）确认具体额定电压。
- 考虑环境与散热：在高环境温度或长期大电流工况下，应考虑适当的电流降额和良好散热布局，以免缩短寿命或导致误熔。
- 使用寿命与冲击：陶瓷封装适合高应力场合，但仍建议进行实际环境的老化与冲击测试验证。
- 焊接工艺：作为 SMD 器件，应按厂方推荐的回流焊工艺参数和 PCB 焊盘设计进行焊接，避免过热或焊接缺陷影响性能。
六. 包装与识别
- 提供形式：卷带包装（T/R），适合自动贴片生产线。
- 标识建议：订购与检验时核对完整料号、批次与规格书，确认 I2t、分断能力及额定电压等关键参数一致。
注：本文为基于现有参数的产品概述，如用于最终设计或认证，请参考 Littelfuse 官方数据手册并与供应商确认型号与参数一致性。
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