Parts · Transistors
OC44
Ge PNP BJT TH.18 circuits use this part. Listed as: BJT transistor, PNP Germanium; Trans-Can-WIDE; Transistor OC44.
Selector table · a row in a maker's catalog, not a full datasheet; the part is discontinued
Substitutes Ge PNP transistor
Matched on material, polarity and the limits below from the transistor parameter database. Pinouts and packages are not in that data: check the datasheet before you drop one in, and expect gain to change the sound.
This part
| Part | hFE min | Vce | Ic | Pc | fT |
|---|---|---|---|---|---|
| OC44 | 100 | 12 V | 10 mA | 0.083 W | 8 MHz |
Used on other boards here
| Part | hFE min | Vce | Ic | Pc | fT | Boards |
|---|---|---|---|---|---|---|
| OC42 | 70 | 15 V | 50 mA | 0.05 W | 7 MHz | 1 |
| SFT308 | 70 | 12 V | 100 mA | 0.15 W | 6 MHz | 2 |
| NTE102 | 90 | 16 V | 150 mA | 0.15 W | 2 MHz | 3 |
| SFT337 | 100 | 15 V | 100 mA | 0.15 W | 1 MHz | 3 |
| OC46 | 80 | 20 V | 125 mA | 0.083 W | 2 MHz | 1 |
| 2N408 | 65 | 18 V | 70 mA | 0.15 W | 6.7 MHz | 5 |
| P416B | 90 | 12 V | 25 mA | 0.1 W | 80 MHz | 3 |
| 2N508 | 120 | 16 V | 200 mA | 0.2 W | 2 MHz | 2 |
Closest by the numbers
| Part | hFE min | Vce | Ic | Pc | fT |
|---|---|---|---|---|---|
| NKT62 | 100 | 10 V | 25 mA | 0.075 W | 8 MHz |
| NKT32 | 100 | 10 V | 10 mA | 0.075 W | 6 MHz |
| NKT42 | 100 | 10 V | 10 mA | 0.075 W | 6 MHz |
| NKT53 | 100 | 10 V | 10 mA | 0.075 W | 5 MHz |
| OC43 | 100 | 15 V | 50 mA | 0.08 W | 15 MHz |
| 2SA17H | 120 | 10 V | 15 mA | 0.08 W | 9 MHz |
| NKT143 | 100 | 12 V | 25 mA | 0.125 W | 3 MHz |
| NKT144 | 100 | 12 V | 25 mA | 0.125 W | 3 MHz |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Radian (Legacy) LT1054 · LT1054CP · OC44 Dallas Arbiter Rangemaster · 1590B | Dallas Arbiter Rangemaster | Boost | Aion FX | 1590B | 2 | — | 19 | |
| Fuzzlord Effects Riff Master Vero12×11 Verified OC44 Fuzzlord Effects Riff Master | Fuzzlord Effects Riff Master | Boost | Dirtbox Layouts | — | 1 | — | 14 | |
| Hornby Skewes Zonk Machine Mk I Vero16×10 Verified A02650 · OC44 · OC75 Hornby Skewes Zonk Machine Mk I | Hornby Skewes Zonk Machine Mk I | Fuzz | Dirtbox Layouts | — | 2 | — | 19 | |
| Keeley Java Boost Vero14×10 Verified OC44 Keeley Java Boost | Keeley Java Boost | Boost | Dirtbox Layouts | — | 2 | — | 14 | |
| Hornby Skewes Zonk Machine Perfboard Verified OC44 · OC75 · TI A02 650 Hornby Skewes Zonk Machine | Hornby Skewes Zonk Machine | Fuzz | Effects Layouts (blog) | — | 2 | — | 20 | |
| Zonky A02650 · OC44 · OC75 · TC1044 Hornby Skewes Zonk Machine Mk I · 1590B | Hornby Skewes Zonk Machine Mk I | Fuzz | Five Cats Pedals | 1590B | 2 | £4.50 | 25 | |
| Fat Ranger OC44 Dallas Arbiter Rangemaster · 1590B | Dallas Arbiter Rangemaster | Boost | HotKits | 1590B | 2 | $2.00 | 13 | |
| Zonkbox A02650 · OC44 · OC75 · TC1044 D*A*M Zonk Machine · 125B | D*A*M Zonk Machine | Fuzz | PedalPCB | 125B | 2 | $8.00 | 25 | |
| Dallas Rangemaster OC44 Dallas Arbiter Rangemaster | Dallas Arbiter Rangemaster | Boost | Revolution Deux | — | 1 | — | 9 | |
| Dallas Rangemaster OC44 Dallas Arbiter Rangemaster | Dallas Arbiter Rangemaster | Boost | Revolution Deux | — | 1 | — | 9 | |
| Hornby Skewes Zonk Machine A02650 · OC44 · OC75 Hornby Skewes Zonk Machine | Hornby Skewes Zonk Machine | Fuzz | Revolution Deux | — | 2 | — | 22 | |
| Hornby Skewes Zonk Machine (Jonaz version) Vero A02650 · OC44 · OC75 Hornby Skewes Zonk Machine | Hornby Skewes Zonk Machine | Fuzz | Revolution Deux | — | 2 | — | 19 | |
| Pete Moore Rangepig 2N4402 · OC44 Pete Moore Rangepig | Pete Moore Rangepig | Boost | Revolution Deux | — | 1 | — | 10 | |
| Dallas Rangemaster Tagboard Verified OC44 Dallas Arbiter Rangemaster | Dallas Arbiter Rangemaster | Boost | Tagboard Effects | — | 1 | — | 9 | |
| Hornby Skewes Zonk Machine I Vero18×9 Verified A02650 · OC44 · OC75 Hornby Skewes Zonk Machine Mk I | Hornby Skewes Zonk Machine Mk I | Fuzz | Tagboard Effects | — | 2 | — | 19 | |
| Keeley Java Boost Vero17×8 Verified OC44 Keeley Java Boost | Keeley Java Boost | Boost | Tagboard Effects | — | 2 | — | 14 | |
| Pro Analog MKIII Fuzz Vero16×9 Verified OC44 · OC71 Pro Analog Mk. III Fuzz | Pro Analog Mk. III Fuzz | Fuzz | Tagboard Effects | — | 2 | — | 19 | |
| Rangepig Vero14×8 Verified 2N3906 · OC44 Rangepig | Rangepig | Boost | Tagboard Effects | — | 1 | — | 10 |