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.
松下ERJ2RKF4752X是一款针对小型化、高精度电子电路设计的厚膜贴片电阻,属于松下经典ERJ系列的通用型产品,凭借紧凑封装、稳定电气性能及宽温适应性,广泛适配消费电子、工业控制等多场景需求。
该电阻为厚膜贴片电阻,采用丝网印刷+高温烧结工艺制备,兼顾成本优势与性能稳定性;属于小功率(100mW)、高精度(±1%)范畴,主要面向对PCB空间敏感、需控制信号误差的电路设计,是替代常规±5%精度电阻的高性价比选择。
标称阻值为47.5kΩ,精度等级±1%,即实际阻值范围在47.025kΩ~47.975kΩ之间。相比市场常见的±5%精度电阻,其阻值误差缩小4倍,可有效降低模拟电路(如传感器信号放大、滤波)的信号失真风险,满足中高端电子设备的信号精度要求。
温度系数(TCR)为**±100ppm/℃**,表示温度每变化1℃,阻值变化0.01%。结合工作温度范围(-55℃~+155℃)计算,极端温度下阻值最大变化约±2.1%(210℃温差×100ppm),可满足工业级设备(如户外传感器模块)的宽温工作需求。
采用0402封装(英制尺寸:0.04英寸×0.02英寸,公制1005:1.0mm×0.5mm),是当前贴片电阻中体积最小的封装之一,适配高密度PCB设计(如智能手机主板、可穿戴设备)。厚膜工艺使电阻层与陶瓷基底结合紧密,具备抗磨损、抗环境侵蚀能力,长期使用不易出现阻值漂移。
该电阻凭借均衡的性能与成本表现,成为电子设计中“小体积+高精度”需求的主流选择,松下的品牌可靠性进一步保障了产品在量产中的一致性。
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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.
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