IC Pinouts
1N4001
DO-41
1A Rectifier Diode
Rectifier — reverse-polarity protection. Band = cathode.
datasheet ↗
1N5817
DO-41
1A Schottky Diode
Low-drop Schottky — polarity protection w/ less voltage loss.
datasheet ↗
2N2222
TO-92
NPN BJT (PN2222A, general purpose)
Jellybean NPN switch/amp. TO-92 (PN2222A): E-B-C.
datasheet ↗
2N3904
TO-92
NPN BJT (general purpose)
Jellybean NPN. Flat facing you, legs down: E-B-C.
datasheet ↗
2N5088
TO-92
NPN BJT (high gain, low noise)
High-hFE NPN, popular in fuzz/boost. Flat facing you: E-B-C.
datasheet ↗
2N5457
TO-92
N-channel JFET
N-JFET for boosts/buffers/Dr.Boogey. Flat facing you: D-S-G.
datasheet ↗
2N7000
TO-92
N-channel MOSFET
Small N-MOSFET (Red Llama-style, switching). Flat facing you: S-G-D.
datasheet ↗
7809
TO-220
+9V 1A Regulator
9V regulator for pedal supplies. Metal tab at back: IN-GND-OUT.
datasheet ↗
78L05
TO-92
+5V 100mA Regulator
Small 5V regulator for digital sections (flat facing you).
datasheet ↗
BC547
TO-92
NPN BJT (European jellybean)
Common European NPN. NOTE pinout differs from US parts: C-B-E.
datasheet ↗
CD4049
DIP-16
Hex Inverting Buffer (CMOS)
CMOS hex inverter — Red Llama / CMOS overdrive favourite.
datasheet ↗
J201
TO-92
N-channel JFET (low Vgs(off))
Low-voltage N-JFET, AMZ/amp-sim favourite. Flat facing you: D-S-G.
datasheet ↗
JRC4558
DIP-8
Dual Op-amp (TS-808 type)
The Tube Screamer op-amp. Interchangeable with RC4558/NJM4558.
datasheet ↗
LM317
TO-220
Adjustable Regulator
Adjustable pos. regulator (set by R divider). Tab at back: ADJ-OUT-IN.
datasheet ↗
PT2399
DIP-16
Digital Echo / Delay Processor
Workhorse delay/echo chip for analog-voiced digital delays.
datasheet ↗
TL072
DIP-8
Dual Low-Noise JFET Op-amp
The classic pedal op-amp. Low noise, high input impedance.
datasheet ↗