WMSIC Electronic Components

TWGMC MMBT3904 NPN Transistor MMBT3904

TWGMC MMBT3904 NPN Transistor MMBT3904
1 / 2

Product image

ModelMMBT3904
PackageSOT-23
BrandTWGMC
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Send RFQ Contact customer service

Technical data

Product details

19 specifications

Core information

Product name
TWGMC MMBT3904
Type
TWGMC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TWGMC
Electronic Component
MMBT3904
Electronic Component
1
Package
SOT-23
Electronic Component
1 NPN
Electronic Component
Transistor(BJT)
Electronic Component
0.038g
Electronic Component
1
Electronic Component
BM0220167817
Operating Temperature
55℃~+150℃
Transistor Type
NPN
Frequency(f T)
300MHz
Power Dissipation(Pd)
200mW
Electronic Component
Electronic Component
Electronic Component
3000

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

MMBT3904 产品概述

一、产品简介

MMBT3904 是一种 NPN 型双极性晶体管（BJT），其特性非常适合在小功率放大和开关应用中使用。设计功耗为 200mW，最大工作电压可达 40V，电流最大可达 200mA。该元器件采用 SOT-23 小型封装，适合要求空间紧凑的电子产品。MMBT3904 主要由台湾迪嘉（TWGMC）制造，确保了其品质和稳定性，广泛应用于消费电子、通信设备及工业控制系统等领域。

二、基本参数

  1. 封装: SOT-23

    • 小型化设计，适合高密度装配，便于在狭小空间内布局电路。

  2. 电气特性:

    • 功耗: 200mW
    • 最大集电极电压 (V_CE): 40V
    • 最大集电极电流 (I_C): 200mA
    • 直流增益 (H_FE): 通常值范围在 100 至 300 左右，能满足不同应用的增益需求。

  3. 工作温度范围: -55°C 至 +150°C

    • 适应不同工作环境，保证在广泛的温度条件下正常运行。

三、应用领域

MMBT3904 广泛应用于多种电子电路中，主要包括：

  1. 开关电路:

    • MMBT3904 可以被用作驱动开关，特别是在低功耗设备中的应用。其快速的开关特性使得它适合于 PWM（脉宽调制）控制电路或其他需要快速切换的应用场合。

  2. 放大电路:

    • 作为小信号放大器，MMBT3904 能够有效地放大音频信号和其他低电平信号，适用于音频处理、信号传输等领域。

  3. 线性稳压电源:

    • 在电源管理中，MMBT3904 可以作为调节器的输出级，提供基于负反馈的线性稳压供电方案。

  4. 微控制器接口:

    • 由于其较小的封装，不仅可以直接与微控制器的 GPIO 端口相连，还能提供必要的电流增益，以驱动更大负载。

四、设计注意事项

在设计使用 MMBT3904 的电路时，应注意以下几点：

  1. 散热管理:

    • 由于其功耗为 200mW，故在高功率条件下需合理设计散热措施，以避免过热造成的损伤。

  2. 极性连接:

    • 确保在电路中正确连接三极管的基极、集电极和发射极，错误的连接可能导致元器件损坏。

  3. 安全工作区域（SOA）:

    • 在实际应用中，需要确保工作点位于该三极管的安全工作区域（SOA）内，避免超出最大电压和电流限制。

五、总结

MMBT3904 是一种性能优良的小功率型 NPN 三极管，凭借其高增益、高频响应及兼容性，被广泛采用于各种电子产品的电路设计中。通过合理的应用和设计，它能够帮助工程师和设计师实现高效、可靠的电子系统。TWGMC 品牌的 MMBT3904 以其优越的电气性能和小巧的封装，成为电子设计中的一个重要组成部分，能够满足现代电子产业的多样化需求。

Request for quote

Send RFQ

Use the form for single models, category sourcing, and multi-line BOM requirements.

Send your target model and quantity.

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.

Electronic component model and package intelligence review on an ESD-safe inspection bench

Model & package intelligence

Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.

BOM matching and alternative component comparison workstation with protected IC samples

BOM matching & alternatives

BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.

Electronic component sourcing availability dashboard with ESD-protected samples

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.

Package confirmation Typical RFQ workflow

A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.

Mixed BOM triage Typical RFQ workflow

The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.

Obsolete-part review Typical RFQ workflow

Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.

Small-batch request Typical RFQ workflow

Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.

Repair batch evidence Typical RFQ workflow

When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.

Model suffix clarification Typical RFQ workflow

Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.

Export handoff Typical RFQ workflow

The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.

Replenishment inquiry Typical RFQ workflow

Related products

Packaged components ready for RFQ.