2N3904 HiLetgo 100pcs TO-92 NPN General Purpose Transistor Pack

Description

Product Overview

The HiLetgo 2N3904 NPN transistor pack is a comprehensive collection of 100 individual TO‑92 packaged transistors designed for a broad spectrum of electronic applications. Each transistor is built to meet the rigorous standards expected by both hobbyists and professional engineers, offering reliable performance in switching, amplification, and signal processing tasks. The package dimensions of 8.58 x 5.55 x 0.35 inches make it easy to store and organize within any workspace, while the lightweight 1.06‑ounce total weight ensures portability for field testing and on‑site troubleshooting.

These transistors are manufactured using high‑purity silicon semiconductor material, providing a stable current gain (hFE) that typically ranges from 100 to 300, depending on the operating conditions. The 2N3904 model is renowned for its low saturation voltage and fast switching speed, making it an ideal choice for digital logic circuits, low‑power audio amplifiers, and LED driver applications. The package includes a clear datasheet that outlines the maximum collector‑emitter voltage of 40 V, collector current of 200 mA, and power dissipation of 625 mW, ensuring that designers have all the necessary parameters at their fingertips.

Usage

In practical terms, the 2N3904 transistors excel in environments where space is at a premium and reliability cannot be compromised. Whether you are building a prototype board for a university project, assembling a small‑scale production run of consumer electronics, or repairing a vintage radio, these transistors provide the flexibility and performance required for successful outcomes. Their TO‑92 form factor allows for easy insertion into standard breadboards and through‑hole PCBs, facilitating rapid iteration and testing without the need for specialized equipment.

Typical use cases include driving low‑current loads such as LEDs, controlling small motors, and acting as switches in microcontroller‑based systems. The transistors also perform well in analog circuits, serving as voltage amplifiers in audio pre‑amp stages or as part of biasing networks in transistor‑based oscillators. Because the pack contains 100 units, you can confidently allocate transistors across multiple projects, maintain a consistent inventory, and reduce lead times associated with re‑ordering single units.

Why Choose Us

Choosing HiLetgo means selecting a brand that has built a reputation for delivering high‑quality electronic components at competitive prices. Each transistor in this pack undergoes a stringent quality control process that includes electrical testing, visual inspection, and performance verification to ensure that every unit meets the specified parameters. The manufacturer’s commitment to consistency is reflected in the product’s 4.4‑star rating from over 70 verified customer reviews, highlighting satisfaction with both the component reliability and the responsive customer support.

Beyond the core product, HiLetgo provides comprehensive documentation, including a detailed datasheet, application notes, and a quick‑start guide that helps users get up and running quickly. The company also offers a dedicated technical support line and an online community forum where users can share designs, troubleshoot issues, and receive advice from experienced engineers. This level of after‑sales service ensures that you are not only purchasing a component but also gaining a partner in your development journey.

Key Features

• High‑quality silicon NPN transistors deliver consistent gain and low saturation voltage
• Convenient TO‑92 package fits standard breadboards and through‑hole PCBs for easy prototyping
• Versatile performance suitable for switching, amplification, and low‑power driver applications
• Comes in a 100‑piece bulk pack, reducing the need for frequent re‑ordering and ensuring inventory stability
• Backed by responsive technical support and comprehensive documentation for hassle‑free integration

FAQ

What is the maximum voltage rating for the 2N3904 transistors?

The 2N3904 transistors can handle a collector‑emitter voltage up to 40 V, making them suitable for most low‑voltage circuits.

Can these transistors be used for audio amplification?

Yes, the 2N3904’s low noise and moderate gain characteristics make them a good choice for small‑signal audio pre‑amplifier stages.

Do the transistors come with a datasheet?

Each pack includes a detailed datasheet that outlines electrical specifications, pin configurations, and recommended operating conditions.

Is there a warranty or return policy?

HiLetgo offers a standard 30‑day return policy for defective units, and their customer support team can assist with warranty claims if needed.