WMSIC Electronic Components

Littelfuse 0312004.MXP 0312004

Model0312004.MXP
PackageD6.4xL31.8mm
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 25+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
Littelfuse 0312004.MXP
Type
LITTELFUSE
Unit
Electronic Component
Minimum package
100

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LITTELFUSE
Electronic Component
0312004.MXP
Electronic Component
1
Package
D6.4xL31.8mm
Type
Glass Tube Fuse
Electronic Component
Non-Resettable Fuse
Electronic Component
2.05g
Electronic Component
31.8mm
I2t
28.5
Electronic Component
1
(φD)
6.4mm
Electronic Component
200A@250VAC
Electronic Component
BM0229356639
Operating Temperature
55℃~+125℃
Voltage
250V

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

0312004.MXP 产品概述

一、产品简介

0312004.MXP 为 Littelfuse(美国力特)出品的玻璃管快熔保险丝,规格 D6.4×L31.8mm(俗称 6.4×31.8mm)。额定电流 4A,额定交流电压 250VAC,工作温度范围宽(-55℃~+125℃),适用于对响应速度要求较高的过流保护场合。

二、主要技术规格

  • 类型:玻璃管保险丝(快熔,Quick blow)
  • 额定电流:4A
  • 额定电压:250VAC
  • 熔断能量(I2t):28.5 A²s(标称)
  • 分断能力:200A @ 250VAC
  • 物理尺寸:直径 φ6.4mm,长度 31.8mm
  • 工作温度:-55℃~+125℃
  • 封装:D6.4xL31.8mm,品牌:Littelfuse

三、性能特点

  • 快速熔断:对短时过流和故障电流响应迅速,能保护敏感元器件免受瞬态过流损害。
  • 高分断能力:200A 分断能力能在大多数低压交流系统发生短路时切断故障电流,减少系统损坏风险。
  • 温度范围宽,可靠性高,适用于工业与商用环境。

四、典型应用

  • 开关电源、适配器及充电设备的前端过流保护
  • 仪器仪表、小型家用电器及照明设备
  • PCB 板端或面板式保险丝座中的通用保护元件
  • 对电机启动冲击不敏感且需快速保护的电子线路

五、选型与安装要点

  • 快熔特性适用于保护对过流响应要求高的电路,但不适合电机启动或大启动电流场合(应选慢熔/延时型)。
  • 连续工作电流应小于额定电流,并考虑环境温度对额定值的影响,常见经验为在高温或密闭环境下进行适当降额(10%~25%)。
  • 使用合适尺寸的保险丝座和夹具,确保良好接触与散热,避免机械振动和应力集中。
  • 在设计中参考制造商的时间-电流特性曲线(T-C 曲线)和详细数据页以获得准确保护行为。

六、储存与安全注意事项

  • 存放于干燥、无腐蚀气体的环境,避免长期日光直射和高湿。
  • 更换时确认断电并使用同型号同规格的零件,切勿用更高额定电流替代。
  • 废弃的保险丝应按电子元件回收处理,不可随意丢弃。

七、结论与建议

0312004.MXP 是一款可靠的 6.4×31.8mm 玻璃管快熔保险丝,适合要求快速过流切断和中等分断能力的应用场景。在选型时注意与电路的启动电流和长期工作温度匹配,必要时参考 Littelfuse 官方数据手册以获取完整的 T-C 曲线和认证信息,以确保系统保护的准确性与安全性。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

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.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

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.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.