Parts · ICs
MC33178P
Dual BJT-Input Op-Amp DIP-8.8 circuits use this part. Listed as: IC MC33178P.
Datasheet · from onsemi.com
Substitutes same socket
Parts that fit the same socket: the same function, pin count and pinout. The figures are read off each part's datasheet (this one's from page 4), typical where the sheet gives a typical value, otherwise the maximum. Closest first; the last column says what differs. A different part can change the sound, and a circuit may lean on one particular figure, so read the build document's notes before you swap.
This part
| Part | Input | Supply | GBW | Slew | Noise | Iq | Boards |
|---|---|---|---|---|---|---|---|
| MC33178 | bipolar | 4–36 V | 5 MHz | 2 V/µs | 7.5 nV | 0.42 mA | 35 |
Low-noise bipolar dual that draws only about 0.42 mA per amplifier and drives 600 ohm loads.
Fits the same socket
| Part | Input | Supply | GBW | Slew | Noise | Iq | Boards | Differs |
|---|---|---|---|---|---|---|---|---|
| 4559 | bipolar | ?–36 V | 4 MHz | 2 V/µs | 1.65 mA | 29 | draws 1.65 mA per amplifier. Audio dual with stronger output drive than a 4558 (±10 V into 600 Ω). | |
| 4558 | bipolar | 10–30 V | 4 MHz | 2.2 V/µs | 7 nV | 1.25 mA | 1164 | rated from 10 V; draws 1.25 mA per amplifier. Bipolar input with about 80 nA bias current, so it needs a DC bias path on each input. |
| NJM4565D | bipolar | 8–36 V | 10 MHz | 4 V/µs | 2.25 mA | 2 | draws 2.25 mA per amplifier. Drives 20 V peak-to-peak into 400 Ω; the DIP8 (NJM4565D) is listed as discontinued. | |
| NJM2100 | bipolar | 2–7 V | 12 MHz | 4 V/µs | 1.75 mA | 1 | 7 V max, not for 18 V; draws 1.75 mA per amplifier. Low-voltage dual op-amp rated to ±3.5 V (7 V total), so it cannot run straight from 9 V. | |
| M5218 | 4–32 V | 7 MHz | 3 V/µs | 1.5 mA | 21 | draws 1.5 mA per amplifier. Low-noise audio dual the maker calls close to the 4558 and 4559, with ±50 mA load current. | ||
| NE5532 | bipolar | 10–30 V | 12 MHz | 5 V/µs | 5 nV | 3 mA | 155 | rated from 10 V; draws 3 mA per amplifier. Low noise and strong output drive, but draws about 3 mA per amplifier and has 200 nA bias current. |
| 4580 | bipolar | 4–36 V | 15 MHz | 5 V/µs | 3 mA | 103 | draws 3 mA per amplifier. Low-noise, high-output-current audio dual from ±2 V; the DIP8 (NJM4580D) is listed as discontinued. | |
| M5216 | 4–32 V | 10 MHz | 3 V/µs | 2.25 mA | 4 | draws 2.25 mA per amplifier. High-current dual (±100 mA load) meant for headphone drivers. | ||
| UPC4570 | bipolar | 8–32 V | 15 MHz | 7 V/µs | 2.5 mA | 5 | draws 2.5 mA per amplifier. Low-noise, wideband audio dual; needs at least ±4 V (8 V) supply. | |
| LM833 | bipolar | 10–36 V | 16 MHz | 7 V/µs | 4.5 nV | 2.05 mA | 144 | rated from 10 V; draws 2.05 mA per amplifier. Low-noise audio dual; needs at least ±5 V (10 V) and draws about 2 mA per amplifier. |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| MXR Distortion III Vero17×14 Verified MC33178P · MPSA14 MXR Distortion III | MXR Distortion III | Distortion | Dirtbox Layouts | — | 3 | — | 28 | |
| MXR Distortion III Perfboard Unverified MC33178P · MPSA14 MXR Distortion III | MXR Distortion III | Distortion | Effects Layouts (blog) | — | 3 | — | 29 | |
| Berzerk Overdrive MC33178P · MPSA14 MXR ZW-44 Zakk Wylde Overdrive · 1590B | MXR ZW-44 Zakk Wylde Overdrive | Overdrive | HotKits | 1590B | 3 | $2.00 | 24 | |
| Custom Badass Modified OD 2N5088 · MC33178P · MPSA14 MXR Custom Badass Modified OD | MXR Custom Badass Modified OD | Overdrive | PCBWay: Glory to Ukraine | — | 3 | — | 35 | |
| MXR Custom Badass Modified OD 2N5088 · MC33178P · MPSA14 | — | Overdrive | PCBWay: Glory to Ukraine | — | — | — | 50 | |
| MXR Distortion III Vero20×13 Verified MC33178P · MPSA14 MXR Distortion III | MXR Distortion III | Distortion | Tagboard Effects | — | 3 | — | 30 | |
| MXR GT-OD Vero20×12 Verified MC33178P · MPSA14 MXR GT-OD | MXR GT-OD | Distortion | Tagboard Effects | — | 3 | — | 24 | |
| MXR ZW44 Zakk Wylde Vero19×12 Verified MC33178P · MPSA14 MXR ZW-44 Zakk Wylde Overdrive | MXR ZW-44 Zakk Wylde Overdrive | Distortion | Tagboard Effects | — | 3 | — | 23 |