Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
Available for RFQ
Technical data
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
Littelfuse(美国力特)推出的0438.500WR是一款高性能的贴片式陶瓷保险丝,专为快速熔断应用而设计,旨在为电子设备提供可靠的过流保护。这款保险丝适用于各种工业及消费类电子产品,确保设备在异常情况下的安全运行。
0438.500WR保险丝的熔断I²t值为0.01,适应多种操作环境和负载条件。其额定电压为DC 63V,AC 32V,额定电流为500mA,适合应用于中小功率设备。同时,标称电压降为486mV,确保了在正常工作条件下,设备的电压损耗达到最低。
该产品具备50A的高分断能力,能够有效地切断过流,保护下游电路器件不受损坏,尤其在高电流情况下表现尤为突出。其工作温度范围为-55°C至150°C,能够适应严苛的工作环境,确保在极端温度下也能保持稳定的性能。
0438.500WR采用0603封装(即1.6mm x 0.8mm),表面贴装(SMD)设计,使其能够轻松地集成到现代小型电路板中。该产品的标称冷电阻为829mΩ,确保了良好的电流传输效率,同时降低了功耗。
其陶瓷材料在电气绝缘和热稳定性上具有显著优势,提供了更高的耐压和抗化学腐蚀特性,适合于多种工业和消费类设备中。此外,快速熔断特性使得该保险丝在面对短路或过流状况时能迅速反应,极大降低了故障风险。
0438.500WR保险丝广泛应用于各种领域,包括但不限于:
综合来看,Littelfuse的0438.500WR快速熔断陶瓷保险丝凭借其优异的性能参数、高分断能力及广泛的应用范围,成为电子元器件市场上可靠的过流保护选择。无论是在消费电子、工业设备还是医疗器械领域,该保险丝都能够提供有效的保护,延长设备的使用寿命,减少维护成本。选择Littelfuse的产品,您将获得卓越的质量和高度的安全性,确保您的电子设备在各种环境下均能稳定运行。
Request for quote
Use the form for single models, category sourcing, and multi-line BOM requirements.
Product sourcing intelligence
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
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