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.
RL12FTNR120是大毅科技推出的1206封装贴片式电流采样电阻(分流器),专为中高精度电流检测场景设计。其核心价值在于在紧凑的1206封装下,实现了「高精度阻值+稳定温度特性+合理功率密度」的平衡,可满足电源系统、汽车电子、便携设备等领域对电流监控的可靠性需求,同时适配自动化生产流程,降低终端产品的设计与制造成本。
该电阻的核心参数直接决定应用适配性,具体解析如下:
阻值为120mΩ(0.12Ω),属于电流采样电阻典型低阻区间;精度达**±1%**,在同封装分流器中属于较高水平——25℃标准温度下,实际阻值与标称值偏差不超过1.2mΩ,可有效减少电流检测的基础误差(电流检测公式I=V/R,R误差直接影响I的精度)。
额定功率为500mW(0.5W),结合1206封装(3.2mm×1.6mm)的紧凑尺寸,功率密度表现优异。根据功率公式P=I²R,可推算最大允许电流约2.04A(I=√(0.5/0.12)≈2.04A),覆盖多数中小功率电路的电流检测场景(如10W以内DC-DC转换器、便携设备充放电回路)。
温度系数(TCR)为**±200ppm/℃**,即每升高1℃,阻值变化不超过标称值的0.02%。这一参数对宽温应用至关重要——例如汽车电子(-40℃~125℃)中,温度变化165℃时,阻值总变化约±3.3%,结合原始±1%精度,总误差控制在±4.3%以内,满足车载辅助电路需求。
RL12FTNR120采用1206贴片封装,符合IPC-J-STD-001标准,具备以下优势:
结合参数特性,核心应用场景包括:
在AC-DC适配器、DC-DC降压/升压模块中,用于输出电流采样:通过检测电阻压降(V=I×R),实现过流保护、恒流充电控制、效率监测——±1%精度保障控制逻辑准确性,500mW功率满足中小功率电源需求。
适配车载充电器、LED车灯驱动、车身控制模块(BCM)的电流检测:宽温稳定性(±200ppm/℃)适应汽车舱内-40℃~85℃温度变化,1206封装符合车载电子小型化要求。
应用于智能手机、平板电脑、充电宝的电池充放电回路:小体积不占用额外空间,高精度准确监控充放电电流,避免过充/过放,延长电池寿命。
用于PLC模块、小型电机驱动的电流检测:稳定温度特性适应工业环境温度波动,满足工业级设备可靠性要求。
大毅科技作为专业电阻制造商,RL12FTNR120具备以下可靠性优势:
RL12FTNR120是一款「小体积、高精度、宽温稳定」的贴片电流采样电阻,适合对电流检测精度、集成度有要求的中低端应用场景。参数平衡度高,安装便捷,品牌可靠性有保障,是电源、汽车电子、便携设备等领域的经济适用型选择。
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