20pcs BJT Transistors – MPS8550S, 2N3906S, KRC105S & More
20pcs BJT Transistors – MPS8550S, 2N3906S, KRC105S & More
20-Piece BJT Transistor Assortment Pack
Stock your electronics workbench with this convenient 20-piece assortment of general-purpose BJT (Bipolar Junction Transistor) components. This mixed pack includes popular surface-mount and small-signal transistors used in a wide range of DIY electronics, circuit prototyping, and repair projects.
Included Models
- MPS8550S-D-RTK/P – PNP general-purpose transistor
- 2N3906S-RTK/PS – PNP small-signal transistor
- KRC105S-RTK/P – NPN transistor with built-in resistors
- 2N5551S-RTK/P – NPN high-voltage transistor
- KIA78L05F-RTF/P – 5V voltage regulator IC
- KIA7023AF – Voltage regulator IC
- KTD600K-Y-U/PH – NPN power transistor
- KTB631K-Y-U/PH – PNP power transistor
Key Features
- General-purpose BJT transistors suitable for a wide variety of circuit applications
- Compact surface-mount (SMD) packages for space-saving PCB designs
- Covers both NPN and PNP polarities for flexible circuit design
- Includes voltage regulator ICs for stable power supply circuits
- Ideal for prototyping, repair, and component replenishment
- No high-concern chemicals — standard-compliant components
- Customizable quantities available
Specifications
| Package Quantity | 20 pieces (mixed) |
| Component Type | BJT Transistors & Voltage Regulators |
| Use | General Purpose Electronics |
| High-Concern Chemicals | None |
| Country of Origin | Made in Mainland China |
Perfect For
- Electronics engineers and hobbyists
- PCB prototyping and circuit testing
- Repair and rework of consumer electronics
- Students learning about transistor circuits
- Maintaining a well-stocked components inventory
Looking for more electronics tools and accessories? Check out our Electromagnetic Induction Tester – Coil & Circuit Fault Detector or our Air Compressor Pressure Gauge – DIY Tool to complete your workbench setup.
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Frequently Asked Questions
Q: What types of BJT transistors are included in this 20-piece pack?
A: This assortment includes a mix of NPN and PNP general-purpose BJT transistors — including MPS8550S, 2N3906S, KRC105S, 2N5551S, KTD600K, and KTB631K — as well as KIA78L05F and KIA7023AF voltage regulator ICs, all in compact SMD packages suitable for a wide range of electronics applications.
Q: Are these transistors suitable for surface-mount (SMD) PCB designs?
A: Yes, these BJT transistors are packaged in surface-mount (SMD) form factors, making them ideal for modern PCB designs where space-saving and compact layouts are required.
Q: Can I use these components for circuit prototyping and electronics repair?
A: Absolutely. These are general-purpose transistors and voltage regulators well-suited for prototyping new circuits, testing, and repairing existing consumer electronics boards. They are a great addition to any component stock or electronics toolkit.