Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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Technical data
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ESR18EZPF22R0是罗姆(ROHM)推出的1206封装厚膜贴片电阻,属于品牌常规功率系列中的高精度子型号,核心定位为“中等精度、宽温适用、小功率承载”的通用型电阻。其基础属性清晰匹配工业、车载、消费电子等多场景需求,具体参数如下:
±1%精度是该电阻的核心优势,相比普通电阻可更精准实现分压、限流、信号匹配等功能。例如:
额定功率500mW结合22Ω阻值,最大承载电流约150mA((I=\sqrt{P/R}=\sqrt{0.5/22}≈150mA)),满足大部分小功率电路需求(如单片机I/O限流、LED驱动)。需注意长期工作需降额80%(≤400mW),避免热漂移或寿命缩短。
-55℃+155℃覆盖工业级(-40125℃)和高温车载场景(发动机舱附近);±100ppm/℃的TCR意味着温度每变化100℃,阻值仅变化±0.01Ω,厚膜电阻中属偏优水平,可降低温度对电路性能的影响。
200V为直流/交流峰值电压上限,需避免电路中施加电压超过该值(如高压检测电路需控制分压后电压),否则可能导致击穿。
尺寸适中(3.2×1.6mm),兼顾功率承载与PCB高密度布局;焊接兼容性强,适配回流焊、波峰焊等自动化工艺,适合批量制造。
罗姆采用氧化铝陶瓷基底+金属氧化物厚膜层工艺,相比薄膜电阻(镍铬合金)成本更低、抗硫化/抗机械冲击性能更优;长期可靠性测试显示,阻值漂移≤0.5%,满足工业级长期使用需求。
该电阻凭借“高精度、宽温、高可靠性”的综合性能,成为多领域小功率电路的优选元件,适配自动化生产与恶劣环境需求。
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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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