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.
1812L300/30GR 是 LUTE(陆特)推出的一款 1812 封装的自恢复过流保护元件(可复位保险/聚合物 PTC),专为汽车电子与工业控制端口提供可靠的过流与过温保护。体积小(1812)且支持较高电压与大电流,适用于空间受限但对保护性能要求较高的场合。
在正常工作电流低于 Ihold 时,器件呈现低阻态(典型 Rmin),对电路影响甚微;当电流上升并超过 Itrip,器件内部温度升高,材料发生正温度系数效应,阻值显著上升(不超过 R1max),限制电流并保护电路。故障排除并冷却后器件可自动恢复至低阻态,适合重复性过流事件的保护。Pd 值表征在特定条件下的损耗与热状态,对布局散热设计有参考价值。
1812 封装尺寸小,占板面空间有限,厚度约 1.6 mm,适配自动贴装工艺。低阻初始态有利于降低导通损耗;跳断后阻值仍维持在合理范围,能有效限制故障电流。适合与汽车线束、接线端子、控制模块等紧凑空间配合使用。
该器件以其小体积、高耐压与良好自恢复特性,成为汽车与工业领域中端口过流过温保护的理想选择。
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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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