SOT-23 SMD Transistor Assortment Kit – 10 Values, 100 Pieces

Build smarter electronics projects with this comprehensive SOT-23 SMD Transistor Assortment Kit. Featuring 10 popular transistor values — including S9013, S9014, S9015, S9018, MMBT3904, MMBT3906, SS8050, SS8550, 2N5551, and 2SC1815 — this kit gives hobbyists, engineers, and electronics enthusiasts a reliable supply of surface-mount transistors in one convenient package.

Whether you're prototyping circuits, repairing consumer electronics, or stocking your component drawer, this assortment covers a wide range of NPN and PNP general-purpose transistors in the compact SOT-23 package — perfect for modern PCB designs where space is at a premium.

Key Features

10 Transistor Values: S9013, S9014, S9015, S9018, MMBT3904, MMBT3906, SS8050, SS8550, 2N5551, 2SC1815
100 Pieces Total: 10 pieces per value for a well-balanced, versatile kit
SOT-23 Package: Industry-standard surface-mount package compatible with most modern PCB footprints
NPN & PNP Types: A balanced mix covering signal switching, amplification, and general-purpose applications
Organized Kit: Components stored for easy identification and access during your build sessions
Great Value: Stock up on essential SMD transistors at a fraction of the cost of individual purchases

What's Included

10 x S9013 (NPN)
10 x S9014 (NPN)
10 x S9015 (PNP)
10 x S9018 (NPN)
10 x MMBT3904 (NPN)
10 x MMBT3906 (PNP)
10 x SS8050 (NPN)
10 x SS8550 (PNP)
10 x 2N5551 (NPN)
10 x 2SC1815 (NPN)

Ideal For

PCB prototyping and repair
Arduino, Raspberry Pi, and microcontroller projects
Signal switching and amplification circuits
Electronics hobbyists, students, and professionals
Stocking up your component parts drawer or lab bench

Looking for more components and DIY electronics supplies? You might also enjoy browsing our collection of tools and accessories to round out your workbench setup.

If you enjoy hands-on making projects, check out some of our popular DIY craft supplies:

Learn more: OSHA guidance on hand and power tools

Frequently Asked Questions

Q: What transistor types are included in this SOT-23 SMD assortment kit?

A: The kit includes 10 popular SOT-23 transistor values: S9013, S9014, S9015, S9018, MMBT3904, MMBT3906, SS8050, SS8550, 2N5551, and 2SC1815 — covering both NPN and PNP types for a wide range of general-purpose electronics applications.

Q: How many total pieces are in the SOT-23 SMD transistor assortment?

A: The kit contains 100 pieces in total — 10 pieces of each of the 10 transistor values — giving you a well-stocked supply for prototyping, repairs, and ongoing electronics projects.

Q: What is the SOT-23 package and is it compatible with standard PCB footprints?

A: SOT-23 (Small Outline Transistor) is one of the most widely used surface-mount transistor packages in the electronics industry. It is compatible with standard SOT-23 PCB footprints found in most PCB design software libraries, making it easy to integrate into your circuit board projects.

Q: Are these transistors suitable for beginners as well as experienced engineers?

A: Absolutely. This assortment kit is an excellent resource for both electronics beginners learning about transistor circuits and experienced engineers or technicians who need a reliable stock of common SMD transistors on hand for quick prototyping and repairs.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.