Transistors

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.

2N508 PNP germanium transistors. The 2N508 is a popular PNP for fuzz pedals and other effects. It can be found in modern classics such as the Sunface. This transistor is in a TO-5 package with long leads commonly found on germanium transistors.

AC162 PNP germanium transistors made by Siemens. The AC162 is a popular PNP transistor among fuzz builders and is a great option for effects that use germanium transistors. This transistor is in a TO-1 package that is unique to Siemens transistors and features the long leads commonly found on germanium transistors.

The 2N5135 is a silicon NPN transistor in a TO-105 case. This transistor is a close match to the rare 2N5133 but with higher voltage ratings and is in a larger package. The hFE range is less wide than the 2N5133 with more values in the range found in the batches used on vintage Big Muff pedals. The lower hFE range also makes these a great option for silicon fuzz pedals.

2N2646 programmable unijunction transistor often referred to as a PUT. The 2N2646 can be found in many tremolo effects pedal projects and vintage classics such as the Vox Repeat Percussion.

OC139 NPN germanium transistors. The OC139 is a popular NPN for fuzz pedals and boost effects. This transistor is in a glass SO-2 package with long leads commonly found on germanium transistors. The NPN polarity allows for use with standard pedal power supplies. The dot indicates the collector lead. The OC139 can be found in the EarthQuaker Devices Bows germanium preamp.

The 2N2907 is a silicon planar epitaxial PNP transistor in a TO-18 metal case type. The 2N2907 is designed for use in high speed saturated switching and general purpose applications.

New old stock Soviet GT309E transistors manufactured in Ukraine. The GT309E is a germanium PNP transistor in a very low profile case. The case has a 0.29” diameter and is only 0.1” thick. These have very low leakage and work well in a variety of fuzz pedal builds.

2N797 NPN germanium transistors. The 2N797 is a popular NPN for fuzz pedals and other effects. The NPN polarity allows for use with standard pedal power supplies. The 2N797 is a fairly unique germanium transistor since it is in a TO-18 package.

BC108C NPN silicon transistors made by Philips. The BC108C is a popular NPN choice for fuzz pedals and other effects such as vintage silicon Fuzz Face builds and Big Muff clones.

The 2N2369 is a silicon NPN transistor in a TO-18 metal case type. The 2N2369 is primarily intended for use in high speed switching and VHF amplification applications.

MPS 6531, NPN general purpose amp, 40V, TO-92 Case.

The 2N3392 is a general purpose NPN transistor in a TO-92 case. The 2N3392 is used in some original silicon Fuzz Face pedals as well as the Brassmaster fuzz.

The BC338 is a silicon general purpose NPN transistor in a TO-92 package. The BC338’s typical applications include signal processing, amplification, and switching. The BC338 is available in three different gain ranges: BC338-16, BC338-25, and BC338-40. Type hFE Range (IC=100mA, VCE=1V) Typical hFE (IC=100mA, VCE=1V) BC338-16 100-250 160 BC338-25 160-400 250 BC338-40 250-630 400

2N5459 N-channel JFET in a TO-92 package. The 2N5459 is an N−channel junction field effect transistors, depletion mode (Type A), designed for audio and switching applications. Features

• N−Channel for Higher Gain
• Drain and Source Interchangeable
• High AC Input Impedance
• High DC Input Resistance
• Low Transfer and Input Capacitance
• Low Cross−Modulation and Intermodulation Distortion

Peavey's direct replacement for the SJE 5331. The MJE243G NPN transistor is rated 120V, 3A, and comes in a Case-77 package.

The 2N2484 is a silicon planar epitaxial NPN transistor in a TO-18 metal case type. The 2N2484 is primarily intended for use in high performance, low level, low noise amplifier applications.

OC46 PNP germanium transistors. The OC46 is a popular PNP for fuzz pedals and boost effects. It can be found in vintage electronics and modern fuzz pedals. This transistor is in a black glass SO-2 package with long leads commonly found on germanium transistors.

Peavey's direct replacement for the SJE 5332. The MJE253G PNP transistor is rated 120V, 3A, and comes in a Case-77 package.

TI377 PNP germanium transistors from Texas Instruments. The TI377 is a great PNP for fuzz pedals and other effects. This transistor is in a metal SO-2 package with long leads commonly found on germanium transistors. This package with the gold leads visually matches the 2G308, 2G309, and 2G381 transistors found in Zonk and Tonebender MKI fuzz pedals.

15 A, 60 V, 115 W
EPIBASE - Designed for power amplifier and switching regulator applications. The best choice where high frequency response, low switching losses and good safe operating area are required.

• Current Gain - Bandwidth Product - fT = 2.5 MHz (Min) @ Ic = 1.0 Adc
• Safe Operating Area - Full Power Rating to 40 V

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 BD139 is a NPN medium power BJT transistor in a TO-126 package. The BD139's typical applications include audio amplifiers and drivers but is also popularly used in silicon fuzz pedals. The BD139 is available in two different gain ranges: BD139-10 and QBD139-16. Type hFE (IC=150mA, VCE=2V) BD139-10 63-160 BD139-16 100-250

J201 N-Channel JFET in a TO-92 package made by Siliconix. The J201 is designed primarily for low level audio and general purpose applications with high impedance signal sources.

• Max drain to gate voltage = 40 V
• Max gate to source voltage = -40 V
• Max forward gate current = 50 mA