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MMUN2211LT1G

NPN 数字晶体管，R1=10kΩ R2=10kΩ，50V，100mA，SOT-23-3，预偏压 BRT 开关

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制造商零件：

MMUN2211LT1G

包装：

SOT-23-3 (TO-236, SC-59)

品牌：
产品类别：
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说明

产品概览

MMUN2211LT1G 是 onsemi 推出的 NPN 偏置电阻晶体管（BRT/数字晶体管），将单个 NPN 晶体管与单片偏置电阻网络（R1 = 10kΩ，R2 = 10kΩ）集成在一个紧凑的 SOT-23-3 封装中。这种预偏置晶体管省去了外部偏置电阻器，减少了元件数量和电路板空间，从而简化了电路设计。它专为通用开关和数字接口应用而设计。.

主要规格

制造商 onsemi
类型 NPN 数字晶体管（BRT）
偏置电阻器 R1 10kΩ（串联基极电阻）
偏置电阻器 R2 10kΩ（基极-发射极并联电阻器）
电阻比 R1/R2 1
VCEO（集电极-发射极电压） 50V
IC（集电极电流） 100mA
hFE（直流电流增益） 35 分钟（IC = 5mA 时）
VCE（饱和）（集电极-发射极饱和度） 最大 0.3V @ IC = 10mA
功率耗散 246mW
工作温度 -55°C 至 +150°C
包装 SOT-23-3 (TO-236)
预算价格 $0.03 @ 3ku

特点

  • 集成偏置电阻器：R1 = 10kΩ，R2 = 10kΩ
  • 无需外部电阻元件，减少了 BOM 和电路板空间
  • 50V 集电极-发射极额定电压
  • 100mA 集电极电流能力
  • 通过集成基极电阻器兼容逻辑级驱动
  • SOT-23-3 表面贴装封装
  • 低 VCE（饱和）：10mA 时最大 0.3V
  • 宽工作温度：-55°C 至 +150°C
  • 等同于 DTC114EE / MUN2211

应用

  • GPIO 信号电平转换和接口
  • 继电器和 LED 驱动器电路
  • 数字逻辑信号缓冲
  • 微控制器输出扩展
  • 通用开关和驱动器应用

MMUN2211LT1G 是 Onsemi 数字晶体管系列中的 NPN 偏置电阻晶体管 (BRT)，集成了一个 NPN 开关晶体管和一个由 R1 = 10kΩ（串联基极电阻）和 R2 = 10kΩ（基极-发射极分流电阻）组成的单片偏置电阻网络。这种预偏置配置无需外部偏置电阻器，从而将元件数量从三个（晶体管 + 两个电阻器）减少到一个，简化了 PCB 布局并节省了电路板空间。10kΩ/10kΩ 电阻值（R1/R2 比率 = 1）经过优化，可直接驱动 5V 逻辑输出，提供适当的基极驱动电流，而分流电阻则可确保快速关断。该器件的额定电压为 50V VCEO，集电极电流为 100mA，功耗为 246mW，适用于通用开关、信号接口和驱动器应用。.

偏置电阻器网络

MMUN2211LT1G 的 NPN 晶体管集成了两个电阻器。R1 （10kΩ）串联在外部基极输入引脚和晶体管内部基极之间，限制基极驱动电流。R2 (10kΩ) 连接在内部基极和发射极之间，为关断时存储的基极电荷提供放电路径，并确保晶体管在输入浮动或低电平驱动时保持关断。.

开关操作

当输入引脚施加逻辑高电平电压（如 5V）时，电流通过 R1 流入晶体管基极，使其导通并使集电极-发射极结达到饱和。基极电流约为（VIN - VBE）/R1。当输入变为低电平时，R2 为基极存储的电荷提供放电路径，确保快速关断。R1/R2 的比率为 1，可为 5V 逻辑驱动提供平衡的开关性能。.

输入电压注意事项

当 R1 = 10kΩ 时，5V 输入可产生约 430µA 的基极电流（假设 VBE = 0.7V），足以在集电极电流高达 15-20mA 时驱动晶体管进入饱和状态（hFE min = 35）。对于 3.3V 逻辑，基极电流可降至约 260µA，从而支持更低的集电极电流。设计人员必须验证其特定工作条件下的饱和度。.

针脚 名称 类型 功能
1 B（底座） 输入 基极输入（连接至内部 R1，由逻辑信号驱动）
2 E（发射器） 地面 发射器端子（接地）
3 C（收集器） 输出 集电极（连接负载）
  • GPIO 信号电平转换和数字接口集成偏置电阻器，无需外部元件
  • 继电器和 LED 驱动器电路，其中预偏压晶体管直接连接到微控制器输出端
  • 控制系统中的数字逻辑信号缓冲和反转，元件数量最少
  • 微控制器输出扩展，利用有限的 I/O 引脚驱动多个负载
  • 通用低压侧开关，单元件 BRT 取代晶体管 + 两个电阻器
制造商 部件编号 包装 说明
罗姆 DTC114EE SOT-23-3 引脚兼容，R1=10kΩ R2=10kΩ，等效
onsemi MMUN2212LT1G SOT-23-3 R1=22kΩ R2=22kΩ，同系列，电阻更大
onsemi MMUN2213LT1G SOT-23-3 R1=47kΩ R2=47kΩ，降低基极驱动电流
onsemi MMUN2214LT1G SOT-23-3 R1=10kΩ R2=47kΩ，关断速度更快，关态漏电更低
恩智浦 PDTA114ET SOT-23-3 PNP 等效，R1=10kΩ R2=10kΩ，互补对
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质量保证

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

3. Industry Standard Compliance

Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
  • 汽车电子: All automotive-grade components pass AEC-Q series certification, featuring excellent stability and durability to adapt to complex vehicle operating environments.
  • 医疗设备: High-reliability components meet medical industry safety and compliance regulations, ensuring stable operation for medical equipment.
  • Industrial Control & Consumer Electronics: Products conform to universal international electronic industry standards, suitable for long-term continuous operation of various equipment.

4. Professional Reliability Control

For static-sensitive, moisture-sensitive and precision components such as ICs, PCBs, sensors and connectors, we carry out reliability screening in advance. Combined with standardized ESD anti-static packaging and vacuum moisture-proof packaging, we avoid component damage caused by static electricity, dampness or collision during storage and transportation, and retain the original performance of products.

5. Traceability Management System

We establish a complete product traceability system. Each batch of goods corresponds to independent batch number, sourcing record, inspection record and delivery record. Customers can query the whole lifecycle information of components at any time. This system effectively solves quality risks and facilitates after-sales handling and production quality control for your company.

6. After-sales Quality Guarantee

If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

联系我们

If you have inquiries about our quality standards, inspection procedures or product certification documents, please feel free to contact us:

 

Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

发货与付款

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

1. Payment Terms

We offer a variety of secure and convenient payment methods to meet diverse business cooperation needs. Details are as follows:
  1. Accepted Payment Methods
  • T/T (Bank Wire Transfer): The primary settlement method for bulk orders and a widely used international payment channel.
  • PayPal: Ideal for small orders, sample orders and quick payments.

  1. Settlement Currency

     

    US Dollar (USD) is the default settlement currency. RMB is available for domestic customers.

  2. Bank Charges

     

    All transfer fees, intermediary bank charges and other remittance-related expenses shall be borne by the buyer.

  3. Payment Requirements
  • Sample and small orders: Shipment will be arranged upon full payment.
  • In-stock bulk orders: Goods will be delivered within 2 to 3 working days after full payment.

2. Shipping & Delivery

We partner with leading global logistics providers to ensure safe and fast delivery worldwide. Relevant details are listed below:
  1. Logistics Partners
  • International Express: DHL, FedEx, UPS, TNT
  • Economy Logistics: Air freight and sea freight for large-volume cargo
  • Domestic Delivery: SF Express, Yunda Express
  1. Order Processing Time
  • In-stock items: Orders confirmed and fully paid before 14:00 (GMT+8) will be shipped on the same day. All other orders will be dispatched within 1 to 2 working days.
  • Out-of-stock or sourced items: The delivery lead time will be confirmed separately according to brand and inventory status.
  1. Estimated Transit Time
  • International Express: 3 – 7 working days globally
  • Air Freight: 7 – 12 working days
  • Sea Freight: 25 – 40 working days for heavy and large bulk cargo
  1. Shipping Fee Rules
  • Shipping cost is calculated based on package weight, volume, destination and delivery method.
  • Both freight prepaid and freight collect are available. Please provide your courier account number in advance if you choose freight collect.
  • Free international express delivery is offered for large orders. Terms for long-term partners can be negotiated separately.
  1. Shipment Tracking
     

    Within 24 hours after dispatch, we will send the tracking number, commercial invoice, packing list and other documents to your email or communication account. You may check the shipment status online in real time.

3. General Order Rules & Notes

  1. MOQ & Sample Service

     

    We support flexible minimum order quantities for samples, small-batch and large-batch orders. All sample orders shall comply with the above shipping and payment policies.

  2. Packaging Standard

     

    All electronic components are packed with professional anti-static and shockproof materials. Original factory packaging is available for branded chips and integrated circuits.

4. Customs & Liability Statement

  1. Import Duties & Taxes

     

    All import duties, customs clearance fees and local taxes incurred for international shipments shall be borne by the buyer. We will provide complete customs documents to assist you with clearance procedures.

  2. Handling of Lost or Damaged Goods
  • In case of loss or severe damage during transit, please contact us within 48 hours after receiving the tracking information. We will assist you in filing a claim with the logistics provider.
  • We shall not be liable for any losses caused by incorrect delivery address, wrong contact information or the buyer’s refusal to complete customs clearance.

5. Local Pickup in Shenzhen

Local pickup service is available for customers in Shenzhen and surrounding areas:
  • Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
  • Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
  • Notice: Please make an appointment via email or communication tools one day in advance, and present your order information upon pickup.

Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

服务与包装

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

Core Services

1. One-stop Sourcing & BOM Support

We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

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3. Fast Quotation & Order Processing

Our customer service team responds promptly to inquiries and quotation requests. All in-stock orders will be processed within one working day. We provide stocking reservation services for long-term cooperative customers, effectively solving problems such as component shortages and unstable supply chains.

4. Professional Technical Support

Our senior engineer team provides free technical consultation, model selection guidance and original manufacturer datasheets. We assist customers in solving problems related to product R&D, circuit design and component application, providing reliable technical support for project progress.

5. Sourcing for Special Components

Relying on our global supply chain network, we professionally source scarce components, obsolete parts and customized special components to efficiently solve your procurement difficulties.

6. Global Logistics & Document Services

We cooperate with mainstream international logistics providers including DHL, FedEx, UPS and TNT to achieve fast global delivery. We can provide complete export documents such as customs declaration files, commercial invoices and packing lists to ensure smooth customs clearance for international shipments. Local pickup is also available for customers in Shenzhen, China.

Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

1. General Packaging Specifications

  • All components are packed separately to avoid damage caused by friction and collision;
  • Shockproof buffer materials are added for fragile products to ensure transportation safety;
  • Each package is clearly marked with part number, quantity, batch number and specifications for easy inventory counting and management.

2. Classified Professional Packaging

  • Anti-static Packaging: Static-sensitive components such as chips, circuit boards and sensors are packaged with anti-static bags, shielding boxes and conductive foam in strict accordance with international anti-static standards to prevent static damage.
  • Vacuum Moisture-proof Packaging: Moisture-sensitive components are vacuum-sealed with desiccants to isolate humid air, suitable for ocean transportation and long-term storage.
  • Original Factory Packaging: Integrated circuits of brands such as NXP are delivered with original reels, trays or tubes by default, retaining complete original packaging and adapting to automated SMT production lines.
  • Discrete Device Packaging: Discrete devices such as SMD resistors, power resistors and LEDs are quantitatively and classifiedly packaged with accurate quantity and clear marking.
  • Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.

3. Custom Packaging Services

We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

Online Inquiry Form

Support Excel, PDF, CSV format files for full BOM list quotation

Submit your component procurement and custom packaging needs via the form below. We will provide a detailed quotation and professional solution within 1–8 working hours.

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