Transistors

The BC181 is a general purpose PNP transistor manufactured by Texas Instruments. This low-power PNP bipolar junction transistor is in a TO-92 case.

The BC546 is a silicon general purpose NPN transistor in a TO-92 package. The BC546’s typical applications include signal processing, amplification, and switching. The BC546 is available in two different gain ranges: BC546B and BC546C. Type hFE (IC=2mA, VCE=5V) BC546B 200-450 BC546C 420-800

The 2N4401 is a silicon general purpose NPN transistor in a TO-92 package. The 2N4401’s typical applications include signal processing, amplification, and switching.

2N2222A in a TO-92 package. The 2N2222A is a NPN transistor commonly used in fuzz pedals. Typical Applications:

• Signal processing
• Switching
• Amplification

General purpose low-power PNP bipolar junction transistor, used frequently in hobbyist electronic projects. For the NPN 2N3904 see P-Q2N3904

MPSA14 NPN Darlington transistor (TO-92 package) - designed for high gain, low noise general purpose amplifier applications.

• Max collector to emitter voltage = 30 V
• Max collector to base voltage = 30 V
• Max emitter to base voltage = 10 V
• Max collector current = 0.5 A (continuous)

MPSA63 PNP Darlington transistor (TO-92 package) - designed for high gain, low noise general purpose amplifier applications.

• Max collector to emitter voltage = -30V
• Max collector to base voltage = -30 V
• Max emitter to base voltage = -10 V
• Max collector current = -0.5 A (continuous)

The 2N4125 is a general purpose silicon NPN transistor in a TO-92 case. The 2N4125 is primarily intended for general purpose amplification. It is a popular choice for silicon fuzz pedals due to its low hFE specifications. It has also been used in a variety of classic pedals such as the Phase 90.

Low noise transistor for audio frequency amplifier applications.

2N5088 NPN Bipolar Junction Transistor in TO-92 package

General purpose low-power NPN bipolar junction transistor, used frequently in hobbyist electronic projects.

NPN low noise transistor (TO-92 package) - designed for high gain, low noise general purpose amplifier applications.

• Max collector to emitter voltage = 45 V
• Max collector to base voltage = 45 V
• Max emitter to base voltage = 6.5 V
• Max collector current = 0.2 A (continuous)