Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
LGE 2N3904
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- LGE 2N3904
- Type
- LGE
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- LGE
- Electronic Component
- 2N3904
- Electronic Component
- 1
- Package
- TO-92-3
- Electronic Component
- 1 NPN
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0.209g
- Electronic Component
- 1
- Electronic Component
- BM0219836532
- Operating Temperature
- 55℃~+150℃
- Transistor Type
- NPN
- Frequency(f T)
- 300MHz
- Power Dissipation(Pd)
- 625mW
- Electronic Component
- Electronic Component
- Electronic Component
- 1000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
产品概述：2N3904 NPN三极管
一、产品简介
2N3904是一款广泛应用的NPN型双极型晶体管（BJT），其额定功率为625mW，最大集电极电压为40V，最大集电极电流为200mA。该器件采用TO-92封装，外形紧凑，适合各种电子应用，尤其是在低功率放大和开关电路中表现优异。2N3904产品由知名品牌LGE（鲁光）制造，其可靠性与稳定性得到了市场的广泛认可。
二、器件特性
封装与机械特性
- 封装类型：TO-92
- 尺寸：TO-92封装的尺寸一般为4.3mm×4.0mm×11.2mm（宽×高×长），适合手工焊接及自动化贴装。
电气特性
- 最大集电极电压（V_CE）：40V
- 最大集电极电流（I_C）：200mA
- 最大功耗（P_D）：625mW
- 增益带宽积（f_T）：250MHz (典型)，使其在高频应用中也表现良好。
工作温度范围
- 适用温度范围为-55°C至+150°C，适合多种环境，包括工业和汽车电子应用。
三、应用场景
2N3904由于其优良的性能和适应性，广泛应用于各种电子设备中，特别是以下几种场景：
信号放大
- 2N3904常用于音频、射频等微弱信号的放大电路，提供高增益和良好的线性度，使得其能够有效地提升信号强度。
开关电路
- 在数字电路和开关电源中，2N3904可作为开关器件，根据输入信号的变化快速控制负载的通断，实现逻辑控制功能。
振荡器电路
- 通过适当的外部元件配置（如RC电路或LC电路），2N3904可以用作振荡器的核心元件，以生成特定频率的信号。
驱动小型负载
- 虽然最大电流为200mA，但对于驱动LED、继电器等小型负载，2N3904仍然能轻松胜任。
四、使用注意事项
热管理
- 在高功率应用中，确保适当的散热设计，以避免因过热导致的性能下降或器件损坏。
极性连接
- 安装时，需注意正确连接引脚（基极、集电极、发射极），避免因接反而造成短路或故障。
电压降
- 在开关应用中，关注集电极到发射极的电压降，过大的电压降会影响电路效率，因此在设计时合理选择负载电流和电源电压。
五、总结
作为一款可靠的NPN三极管，2N3904以其625mW的功耗能力和40V的集电极电压，适用于多种电子应用领域。其紧凑的TO-92封装不仅便于安装，也便于现代电子设备的小型化设计。通过合理的电路设计与使用，2N3904能够有效提升系统的性能，成为许多电子设计师的优选元件。无论是在实验室开发、教育用途，还是在商业产品的生产中，2N3904皆能发挥其重要作用，深受用户的青睐。
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.
