Java Boost

effect pedal project by Keeley

Here's the Java Boost effect pedal project from Keeley.

This project has been described using terms like booster, keeley, stripboard, and vero and is reportedly verified, meaning many hobbyists have already completed this project and verify that the instructions are without issue.

Beyond the specs and details found on this page, you'll want to check out these stripboard resources too.

Project Resources

Parts List

  • C1
    6n8
  • C2
    10n
  • C3
    47n
  • C4
    100n
  • C5
    10n
  • C6
    47u
  • C7
    47u
  • D1
    LED
  • P1
    100k Tone
  • P2
    10k Level
  • PT1
    100k
  • PT2
    10k
  • R1
    1M
  • R2
    470k
  • R3
    1M
  • R4
    5k6
  • S1
    SPDT
  • T1
    OC44
  • U1
    9V

Similar transistors & Potential Alternatives

Can't find an exact match for the recommended transistor in this project within your stash? Or maybe you just feel like experimenting. Use these tables below to get started finding a suitable or otherwise interesting transistor substitution.

There may be 8 alternatives for the OC44 mentioned above in the parts list for this project. These suggestions were derived by considering the original component's hFE, Pol, Ic, Vcb, and Vce values and finding comparables in our database. These alternatives are suggestions for further exploration (fun!) and have not been tested in the context of this project. You can also to suit your preferences.

OC44
more info
Cc
12
pF
ft
8
MHz
hFE
100
β
Ic
0.01
A
Pc
0.083
W
Pol
PNP
Tj
80
°C
TranMat
Ge
Vcb
15
V
Vce
12
V
Veb
12
V
2N501A
more info
Cc
3
pF
ft
80
MHz
hFE
95
β
Ic
0.05
A
Pc
0.06
W
Pol
PNP
Tj
85
°C
TranMat
Ge
Vcb
15
V
Vce
12
V
Veb
2
V
2N1471
more info
Cc
30
pF
ft
3
MHz
hFE
100
β
Ic
0.2
A
Pc
0.2
W
Pol
PNP
Tj
75
°C
TranMat
Ge
Vcb
15
V
Vce
12
V
2N3249
more info
Cc
8
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.36
W
Pol
PNP
Tj
200
°C
TranMat
Si
Vcb
15
V
Vce
12
V
Veb
5
V
2SAB23
more info
hFE
100
β
Ic
0.01
A
Pc
0.04
W
Pol
PNP
Tj
125
°C
TranMat
Ge
Vcb
15
V
Vce
12
V
NKT143
more info
Cc
35
pF
ft
3
MHz
hFE
100
β
Ic
0.025
A
Pc
0.125
W
Pol
PNP
Tj
75
°C
TranMat
Ge
Vcb
15
V
Vce
12
V
Veb
12
V
NKT144
more info
Cc
35
pF
ft
3
MHz
hFE
100
β
Ic
0.025
A
Pc
0.125
W
Pol
PNP
Tj
75
°C
TranMat
Ge
Vcb
15
V
Vce
12
V
Veb
12
V
T1510
more info
Cc
3
pF
ft
80
MHz
hFE
95
β
Ic
0.05
A
Pc
0.06
W
Pol
PNP
Tj
85
°C
TranMat
Ge
Vcb
15
V
Vce
12
V
Veb
2
V