Pedal Parts / DIY

Valvo brand OC45 PNP germanium transistors. The OC45 is a popular PNP for fuzz pedals and boost effects. This transistor is in a glass SO-2 package with long leads commonly found on germanium transistors. The dot indicates the collector lead.

Adzam (Mazda) brand OC45 PNP germanium transistors. The OC45 is a popular PNP for fuzz pedals and boost effects. This transistor is in a glass SO-2 package with long leads commonly found on germanium transistors. The dot indicates the collector lead.

OC43 PNP germanium transistors. The OC43 is a popular PNP for fuzz pedals and boost effects. This transistor is in a glass SO-2 package with long leads commonly found on germanium transistors. The dot indicates the collector lead.

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.

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)

2N1308 NPN germanium transistors. The 2N1308 is a popular NPN for fuzz pedals and other effects. This transistor is in a TO-39 package.

The AS394H is a junction isolated ultra well-matched monolithic NPN transistor pair with an order of magnitude improvement in matching over conventional transistor pairs. Electrical characteristics of these devices such as drift versus initial offset voltage, noise, and the exponential relationship of base-emitter voltage to collector current closely approach those of a theoretical transistor. Extrinsic base and emitter resistances are very low, giving very low noise and operating over a wide current range. To guarantee long term stability of matching parameters, internal clamp diodes have been added across the emitter-base junction of each transistor. These prevent degradation due to reverse biased emitter current, the most common cause of field failures in matched devices.

New old stock 2N3565 transistors manufactured by Micro Electronics. The 2N3565 is a silicon NPN transistor in a TO-106 case. The 2N3565 is primarily intended for general purpose and low level applications. 2N3565 transistors were used in the original Harmonic Percolator, Foxx Tone Machine and the Sam Ash Fuzzz Boxx.

High quality single row machine pin sockets made by Preci-Dip. These sockets are the break-away type and can easily snap into smaller sizes such as 5 separate transistor sockets.

2SD77 NPN germanium transistors. The 2SD77 is a popular NPN for fuzz pedals and other effects. The NPN polarity allows for use with standard pedal power supplies.

The 2N4403 is a silicon general purpose PNP transistor in a TO-92 package. The 2N4403’s typical applications include signal processing, amplification, and switching.

2N321 PNP germanium transistors. The 2N321 is a popular PNP for fuzz pedals and other effects. This transistor is in a TO-5 package with long leads commonly found on germanium transistors.

2N1303 PNP germanium transistors. The 2N1303 is a popular PNP for fuzz pedals and other effects. This transistor is in a TO-5 package with long leads commonly found on germanium transistors.

This is a set of two 2N1309 germanium transistors that have been hand-selected to work in the germanium Fuzz Face circuit. Also included are 4 metal film resistors to use in the circuit. In most cases, the values have been modified from the stock values slightly to ensure that the collector of Q2 biases to roughly -4.5V. A data sheet containing the schematic and the resistor values is included so that you can use your own resistor type if you would prefer. There is a range of bias voltages that can sound nice in a Fuzz Face, and voltages in original units varied. These transistors have been tested with bias voltage, sound, and noise level in mind. Note that due to a variety of factors such as battery/PSU voltage, temperature, and component tolerance, the voltage on the collector of Q2 may not measure at exactly -4.5V, but it should be close in a properly-built circuit.

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

The BC209C is a silicon NPN transistor in a TO-106 case. The BC209C is primarily intended for general purpose audio applications. BC209C transistors were used in original silicon Fuzz Face® pedals as well as a variety of D*A*M pedals.

The BC183 is a general purpose NPN transistor in a TO-92 case. The BC183 is commonly used in fuzz pedals and has a reputation as a warm sounding silicon transistor for fuzz. The BC183 is available in three different gain ranges: BC183A, BC183B, and BC183C. Type hfe (IC=2mA, VCE=5V, f=1KHz) BC183A 125-260 BC183B 240-500 BC183C 450-900

The 2N3566 is a silicon NPN transistor in a TO-105 case. The 2N3566 is primarily intended for general purpose amplifier applications.

2N1307 PNP germanium transistors. The 2N1307 is a popular PNP for fuzz pedals and other effects. 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.

High quality TO package transistor sockets by Mill-Max. These machine pin sockets make swapping transistors in pedals and other projects a simple process. These use a standard TO footprint so they are ready for use on PCBs with matching footprints.

The BC182 is a general purpose NPN transistor in a TO-92 case. The BC182 is commonly used in fuzz pedals and has a reputation as a warm sounding silicon transistor for fuzz. The BC182 has a more narrow hFE range than the BC183 which can be helpful for certain builds.

The BC337 is a silicon general purpose NPN transistor in a TO-92 package. The BC337’s typical applications include signal processing, amplification, and switching. The BC337 is available in three different gain ranges: BC337-16, BC337-25, and BC337-40. Type hFE Range (IC=100mA, VCE=1V) Typical hFE (IC=100mA, VCE=1V) BC337-16 100-250 160 BC337-25 160-400 250 BC337-40 250-630 400

2N5400 (761), PNP general purpose amp, 120V, 10mA, TO-92 case.