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.
CH343K 是南京沁恒(WCH)推出的一款USB转UART功能芯片,支持 USB 2.0 协议,面向嵌入式系统与外设连接的串口扩展需求。芯片工作电压范围宽(1.8V~5V),提供 3.3V 与 5V 两种常用电平适配方案,适合直接驱动不同电平的单片机与外设。器件封装为 ESSOP-10-150mil-1mm,体积小、易于电路板布局。
芯片在提供高速数据传输能力的同时保持低功耗特性。典型工作电流约 15 mA,系统空闲或睡眠时静态电流非常低(约 50 μA),适合电池供电或低功耗设计。灵活的电源电压范围使其可与 1.8V、2.5V、3.3V 或 5V 逻辑直接接口(选型时以具体版本和板上电平匹配为准)。
CH343K 为 10 引脚 ESSOP 小封装(150 mil、1 mm 引脚间距规格),典型引脚包括 USB D+/D-、电源(VCC)、地(GND)、UART TX/RX 及若干控制/功能引脚(如 RTS/CTS 或配置引脚)。封装尺寸适合板载直插或模块化封装,便于在空间受限的设计中使用。
选型时务必核对目标系统的供电电压、IO 电平与封装尺寸;若对驱动兼容性或高级信号控制有要求,请查阅 WCH 官方数据手册与驱动支持说明。实际系统中建议做 EMC/ESD 保护与电源滤波设计,以确保长期稳定可靠运行。
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