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.
KH-4.5X4.5X3.8H-STM是金航标(kinghelm)旗下的微型立贴式SMD轻触开关,核心参数精准匹配紧凑电子设备的设计需求。其电路结构为单刀单掷(SPST),通断逻辑简单明确,适用于基础触发、模式切换等场景;本体尺寸为4.5mm×4.5mm(长×宽),高度仅3.8mm,属于超微型开关范畴,可有效节省PCB空间。安装方式采用立贴式SMD封装,搭配鸥翼型引脚设计,兼容自动化回流焊工艺,提升生产效率。外观上采用圆形黑色按钮(不带支架),按键识别清晰,整体外观简洁适配各类设备外壳。
补充必要性能参数:额定电压DC 12V,额定电流50mA,接触电阻≤50mΩ,绝缘电阻≥100MΩ,工作温度范围-20℃~+70℃,按压寿命≥10万次(典型值),确保长期稳定使用。
该型号在结构设计上聚焦“微型化+可靠性”双重需求:
作为消费电子常用的轻触开关,KH-4.5X4.5X3.8H-STM的性能指标可满足多数场景需求:
该型号因紧凑尺寸与可靠性能,广泛应用于以下场景:
为确保产品性能稳定,需注意以下细节:
KH-4.5X4.5X3.8H-STM凭借紧凑尺寸、可靠性能及低成本优势,成为小型化电子设备触发控制的优选元件,可满足多数消费电子、智能家居的设计需求。
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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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