2SD1047 & 2SB817 Audio Amplifier Transistors 5pcs TO-3P
2SD1047 & 2SB817 Audio Amplifier Transistors 5pcs TO-3P
2SD1047 & 2SB817 Complementary Audio Amplifier Transistors — 5-Piece Set
Upgrade your audio amplifier builds with this genuine 5-piece set of complementary power transistors — the 2SD1047 (D1047) NPN and 2SB817 (B817) PNP pair. These classic TO-3P package transistors are widely used in high-fidelity audio amplifier output stages, delivering stable performance and reliable switching characteristics for both DIY and professional electronic projects.
Made in Mainland China.
Key Features
- Complementary Pair: NPN 2SD1047 and PNP 2SB817 transistors in one set — ideal for push-pull amplifier output stages
- TO-3P Package: Industry-standard package for easy PCB mounting and heatsink compatibility
- Audio Amplifier Grade: Designed for use in integrated circuits and high-power audio output applications
- New & Authentic: Each transistor is brand new and genuine, free from high-concern chemicals
- 5-Piece Pack: Includes multiple units — great for repairs, replacements, or new circuit builds
- Versatile Use: Suitable for voltage regulation, switching, and audio amplification circuits
Specifications
| Model Numbers | 2SD1047 (D1047) / 2SB817 (B817) |
| Package Type | TO-3P |
| Application | Integrated circuit / Audio amplifier |
| Transistor Type | NPN (D1047) / PNP (B817) |
| Condition | New |
| Quantity | 5 pieces |
| Brand | NioCen |
| Country of Origin | Mainland China |
What's Included
- 5 x Transistors (mix of 2SD1047 / 2SB817 — complementary pair set)
Related Products You May Like
- Electromagnetic Induction Tester – Coil & Circuit Fault Detector
- Air Compressor Pressure Gauge 0-10/0-12/0-25 Bar | DIY Tool
Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What is the difference between the 2SD1047 and 2SB817 transistors?
A: The 2SD1047 (D1047) is an NPN power transistor, while the 2SB817 (B817) is its PNP complementary counterpart. Together they form a matched complementary pair commonly used in push-pull audio amplifier output stages for balanced and efficient signal amplification.
Q: What package type are these transistors?
A: Both the 2SD1047 and 2SB817 come in the TO-3P package, which is an industry-standard through-hole package that allows secure PCB mounting and easy attachment to a heatsink for thermal management in high-power applications.
Q: Are these suitable for DIY audio amplifier projects?
A: Yes — these are a popular choice for DIY and hobbyist audio amplifier builds, as well as for repairing existing amplifier circuits. The complementary NPN/PNP pairing makes them ideal for class AB output stages in stereo and mono amplifier designs.