Stratoblaster

This classic DIY pedal is the Stratoblaster, a simple and effective booster. It is perfect to drive a tube amp or give presence to the solos. At high boost levels, it will give a nice and warm saturation.
Steps

Created by DHEA
Status: Active
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Designators and components Step 2 of 5

COMPONENT LIST

PCB  STratoblaster PCB

Resistors
R1    1M    1M OHM 1/4W 1% METAL FILM RESISTOR
R2    100    100 OHM 1/4W 1% METAL FILM RESISTOR ROYAL OHM TOP QUALITY
R3    22k    22K OHM 1/4W 1% METAL FILM RESISTOR ROYAL OHM TOP QUALITY
R4    12k    12K OHM 1/4W 1% METAL FILM RESISTOR ROYAL OHM TOP QUALITY
R5    100k    100K OHM 1/4W 1% METAL FILM RESISTOR ROYAL OHM TOP QUALITY

Capacitors
C1    10u    10UF 16V RADIAL TANTALUM CAPACITOR
C2    1.5u/1u    1UF 35V RADIAL TANTALUM CAPACITOR
C3    100u    100UF 35V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM

Potenciometer
BOOST    50k-C    50K OHM C50K 50KC ANTI-LOG TAPER POTENTIOMETER

Transistor
Q1    J201    MMBFJ201 SOT-23 JFET N-CHANNEL TRANSISTOR J201 SMD

SCHEMATIC

PCB

     

 

TRANSISTOR

You can use either through-hole or SMD transistors. The PCB is designed for JFET transistors (J201, 2N5457, 2N5458, MPF102...) with the pinout as shown in the following figure. If you want to use other types of transistors, check their pinout in the datasheet.