Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
DOWO NE555DR-DW NE555DR
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO NE555DR-DW
- Type
- DOWO
- Minimum package
- 4000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- NE555DR-DW
- Electronic Component
- 1
- Package
- SOP-8
- Electronic Component
- 555 Timer
- Electronic Component
- 0.147g
- Electronic Component
- 1
- Features
- positions
- Electronic Component
- BM0264548672
- Electronic Component
- 1
- Operating Temperature
- 20℃~+85℃
- Operating Voltage
- 4.5V~16V
- Operating Current
- 2mA
- Electronic Component
- Electronic Component
- Electronic Component
- 4000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
NE555DR-DW 产品概述
一、主要特性
NE555DR-DW（品牌：DOWO/东沃）是一款单通道精密定时/振荡集成电路。器件支持4.5V～16V工作电压，静态工作电流典型值约2mA，工作温度范围为-20℃～+85℃。主要功能包括占空比可调的振荡（非稳态/稳态工作）、单稳态定时以及外部RESET复位控制。封装形式为标准SOP-8，便于表面贴装与自动化生产。
二、技术参数（概要）
- 定时器数量：1 个
- 工作电压：4.5V ～ 16V
- 工作电流：约2mA（静态）
- 工作温度：-20℃ ～ +85℃
- 功能特性：占空比可调的振荡、单稳态/非稳态工作、外部复位（RESET）功能
- 封装：SOP-8（表面贴装）
三、功能与工作原理
NE555DR-DW基于经典555架构，通过外接电阻-电容（R、C）网络实现时间常数控制。在单稳态（单触发）模式下，外部触发信号使输出产生可编程脉冲宽度；在非稳态（占空比振荡）模式下，器件在两个阈值之间反复切换，形成方波输出。常用计算公式：
- 振荡频率 f ≈ 1.44 / ((RA + 2·RB)·C)
- 占空比 D ≈ (RA + RB) / (RA + 2·RB) 此外，RESET端可用于强制将输出置为复位态，适合外部控制或系统保护。
四、典型应用场景
- 方波/脉冲发生器、占空比调制电路
- 单稳延时电路（定时延迟、去抖）
- 闪光灯驱动、LED脉冲控制
- 简易PWM控制、声光提示、脉冲计时与测量仪表
- 教学与原型验证电路
五、封装与机械特性
NE555DR-DW采用SOP-8封装，针脚排列符合通用555引脚定义，适配现有PCB封装库。SOP-8体积小、焊接可靠，适用于批量SMT生产。建议在设计时预留合理的接地面和去耦电容位置，以保证定时精度与抗干扰能力。
六、设计与使用建议
- 为提高稳定性，VCC与GND之间应并联适当的去耦电容（如0.1µF陶瓷）靠近引脚布局。
- 当需要可变占空比时，可采用电位器作为RA或RB以实现连续调节。
- 在对时间精度要求较高的场合，应选用低温漂电阻及低漏电容的C元件，避免环境温度影响。
- 使用RESET功能时，保证其在非使用状态被拉高到VCC；需要硬复位时将其拉低。
- 考虑电磁兼容与防抖要求，可在触发通路增加小电容或RC滤波。
七、采购与可靠性
NE555DR-DW为通用且成熟的定时器解决方案，适合工业控制、家电和消费电子等领域。选型时注意工作电压与温度规范，合理评估系统负载与输出需求。DOWO品牌提供常规质量控制和封装一致性，支持批量采购和生产应用。
Request for quote
Send RFQ
Use the form for single models, category sourcing, and multi-line BOM requirements.
Product sourcing intelligence
Model, package, availability, and BOM fit reviewed before quotation.
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
BOM matching & alternatives
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Sourcing availability signal
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
Examples of how common component sourcing requests are organized.
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
Packaged components ready for RFQ.
