Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
Littelfuse 0440003.WR 0440003
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- Littelfuse 0440003.WR
- Type
- LITTELFUSE
- Unit
- Electronic Component
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- LITTELFUSE
- Electronic Component
- 0440003.WR
- Electronic Component
- 1
- Electronic Component
- 1.6mm
- Package
- 1206
- Type
- SMD Fuse
- Electronic Component
- Non-Resettable Fuse
- Electronic Component
- 0.023g
- Electronic Component
- 3.2mm
- I2t
- 1.232
- Electronic Component
- 1
- Electronic Component
- 50A
- Electronic Component
- BM0020301926
- Operating Temperature
- 55℃~+150℃
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
产品概述：0440003.WR
基础信息
0440003.WR 是由 Littelfuse Inc. 生产的一款高性能表面贴装保险丝，隶属于其 440 系列。这款保险丝以其优异的熔断性能和可靠性，在各类电气设备的保护方面发挥着重要作用。
主要规格
- 制造商：Littelfuse Inc.
- 系列：440
- 零件状态：有源
- 包装方式：卷带（TR）
- 安装类型：表面贴装型
- 保险丝类型：板安装（不包括管筒式）
- 响应时间：快速熔断
- 额定电流：3A
- 额定电压：
- AC：32V
- DC：32V
- 不同额定电压时分断能力：50A
- 融断 I²t：1.232
- DC 冷态电阻：0.02252 Ohms
- 工作温度范围：-55°C ~ 150°C
- 尺寸：0.126" 长 x 0.064" 宽 x 0.032" 高（3.20mm x 1.63mm x 0.82mm）
- 封装/外壳：1206（3216 公制）
- 认证：CSA，UL
主要特性与优点
0440003.WR 保险丝的设计旨在提供快速、可靠的电流保护，特别适用于紧凑的电子设备。其表面贴装（SMD）设计使得安装和焊接过程更为简便，同时占用更少的板空间，适合现代电子产品对小型化的需求。
- 快速熔断：这款保险丝具有快速响应特点，可以在短时间内对过流情况做出反应，有效保护电路及连接的元件不受损害。
- 高分断能力：在应用于较高额定电压时，其分断能力可高达 50A，这为用户提供了安全保障，以应对意外的短路情况。
- 广泛的工作温度范围：其工作温度范围从 -55°C 到 150°C，确保在各种极端环境下，保险丝仍能良好工作，适合航空航天、汽车电子及工业控制等领域。
- 优异的电阻性能：其 DC 冷态电阻低至 0.02252 Ohms，有效减少了在正常工作状态下的功耗，提升了整体电路的效率。
应用场景
0440003.WR 保险丝适用于多种电子设备和电路保护应用，包括但不限于：
- 消费电子产品：如手机、平板电脑和其他小型电子设备，保障用户在使用过程中的安全性。
- 工业设备：在自动化设备、传感器及控制器中，为重要电路提供必要的过流保护。
- 汽车电子：在电动汽车及传统燃油汽车的电子控制单元（ECU）等关键部件，保障可靠性和安全性。
结论
0440003.WR 保险丝凭借其快速熔断能力、出色的分断能力以及广泛的操作温度范围，成为电路保护领域的一款理想选择。Littelfuse Inc. 的高品质标准和认证机构的信誉，更加保证了该产品在各类应用中的可靠性和安全性。无论是在消费电子、工业设备还是汽车领域，0440003.WR 都能够为您的产品提供必要的电流保护。
Request for quote
Send RFQ
Use the form for single models, category sourcing, and multi-line BOM requirements.
Product sourcing intelligence
Model, package, availability, and BOM fit reviewed before quotation.
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
BOM matching & alternatives
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Sourcing availability signal
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
Examples of how common component sourcing requests are organized.
Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.
The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
Related products
Packaged components ready for RFQ.
