Boost

effect pedal project by MI Audio

Here's the Boost effect pedal project from MI Audio.

This project has been described using terms like booster, mi audio, and tagboard 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 tagboard resources too.

Project Resources

Parts List

  • C1
    1u
  • C2
    100n
  • C3
    220p
  • C4
    1u
  • D1
    LED
  • P1
    10k Gain
  • R1
    220k
  • R2
    8M2
  • R3
    22k
  • R4
    22k
  • R5
    4k7
  • S1
    DPDT
  • T1
    BC549
  • 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 67 alternatives for the BC549 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. The first 25 alternatives are shown below in alphabetical order by partnumber. See the to suit your preferences.

BC549
more info
Cc
4.5
pF
ft
200
MHz
hFE
110
β
Ic
0.1
A
Pc
0.5
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
6
V
848AT
more info
Cc
6
pF max
ft
300
MHz typ
hFE
110
β
Ic
0.1
A
Pc
0.15
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
849AT
more info
Cc
6
pF max
ft
300
MHz typ
hFE
110
β
Ic
0.1
A
Pc
0.15
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
AD-BC848-A
more info
Cc
4.5
pF
ft
100
MHz
hFE
110
β
Ic
0.1
A
Pc
0.2
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
6
V
BC452
more info
Cc
4.5
pF
ft
150
MHz
hFE
110
β
Ic
0.1
A
Pc
0.3
W
Pol
NPN
Tj
125
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC452A
more info
Cc
4.5
pF
ft
150
MHz
hFE
110
β
Ic
0.1
A
Pc
0.3
W
Pol
NPN
Tj
125
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC453
more info
Cc
4.5
pF
ft
150
MHz
hFE
110
β
Ic
0.1
A
Pc
0.3
W
Pol
NPN
Tj
125
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC453A
more info
Cc
4.5
pF
ft
150
MHz
hFE
110
β
Ic
0.1
A
Pc
0.3
W
Pol
NPN
Tj
125
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC548
more info
Cc
6
pF
ft
300
MHz
hFE
110
β
Ic
0.1
A
Pc
0.5
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC548A
more info
Cc
4.5
pF
ft
200
MHz
hFE
110
β
Ic
0.1
A
Pc
0.5
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
6
V
BC548AP
more info
Cc
4.5
pF
ft
200
MHz
hFE
110
β
Ic
0.1
A
Pc
0.5
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
6
V
BC548BTA
more info
Cc
3.5
pF
ft
300
MHz
hFE
110
β
Ic
0.1
A
Pc
0.5
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC548BU
more info
Cc
3.5
pF
ft
300
MHz
hFE
110
β
Ic
0.1
A
Pc
0.5
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC548CTA
more info
Cc
3.5
pF
ft
300
MHz
hFE
110
β
Ic
0.1
A
Pc
0.5
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC549A
more info
Cc
4.5
pF
ft
200
MHz
hFE
110
β
Ic
0.1
A
Pc
0.5
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
6
V
BC549AP
more info
Cc
4.5
pF
ft
200
MHz
hFE
110
β
Ic
0.1
A
Pc
0.5
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
6
V
BC549BTA
more info
Cc
3.5
pF
ft
300
MHz
hFE
110
β
Ic
0.1
A
Pc
0.5
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC549BTF
more info
Cc
3.5
pF
ft
300
MHz
hFE
110
β
Ic
0.1
A
Pc
0.5
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC549CTA
more info
Cc
3.5
pF
ft
300
MHz
hFE
110
β
Ic
0.1
A
Pc
0.5
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC848
more info
Cc
6
pF
ft
150
MHz
hFE
110
β
Ic
0.1
A
Pc
0.2
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC848A-AU
more info
Cc
4.5
pF max
hFE
110
β
Ic
0.1
A
Pc
0.33
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC848A-G
more info
Cc
4.5
pF
ft
100
MHz
hFE
110
β
Ic
0.1
A
Pc
0.2
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
6
V
BC848ALT1G
more info
Cc
4.5
pF
ft
100
MHz
hFE
110
β
Ic
0.1
A
Pc
0.225
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V
BC848AQ
more info
Cc
4.5
pF max
ft
150
MHz
hFE
110
β
Ic
0.1
A
Pc
0.3
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
6
V
BC848AR
more info
Cc
6
pF
ft
300
MHz
hFE
110
β
Ic
0.1
A
Pc
0.31
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
30
V
Veb
5
V