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MMBT3904

NPN transistor, 40V, 200mA, SOT-23

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Manufacturer Part：

MMBT3904

Package：

SOT-23 (2.9x1.3x1.0mm, 0.95mm pitch)

Brand：
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Description

Product Overview

MMBT3904 from onsemi is a general-purpose NPN transistor with 40V VCEO, 200mA IC, 300MHz fT, hFE 100-300. SOT-23 surface mount. Industry standard 2N3904 SMD equivalent.

Working Principle

General-purpose NPN BJT in SOT-23. Suitable for switching and amplification up to 300MHz. Low saturation voltage. One of the most widely used SMD transistors.

Pin Description

Pin Name Function
1 B Base
2 E Emitter
3 C Collector

Applications

  • General switching
  • Signal amplification
  • LED driver
  • Logic level translation

Alternative Models

Mfr Part Notes
Nexperia MMBT3904,215 Equivalent
Diodes MMBT3904-7-F Equivalent

MMBT3904 from onsemi is a general-purpose NPN transistor with 40V VCEO, 200mA IC, 300MHz fT, hFE 100-300. SOT-23 surface mount. Industry standard 2N3904 SMD equivalent.

General-purpose NPN BJT in SOT-23. Suitable for switching and amplification up to 300MHz. Low saturation voltage. One of the most widely used SMD transistors.

Pin Name Function
1 B Base
2 E Emitter
3 C Collector
  • General switching
  • Signal amplification
  • LED driver
  • Logic level translation
Mfr Part Notes
Nexperia MMBT3904,215 Equivalent
Diodes MMBT3904-7-F Equivalent
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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

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.

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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

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

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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.

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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;
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2. Classified Professional Packaging

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  • 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
 

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