
onsemi
A likely pin-compatible upgrade with a higher 600V blocking voltage and identical trigger current.
Finding a substitute for the MOC3041SR2M zero-cross optocoupler involves matching its 6-SMD package, 400V rating, and zero-crossing function. The MOC3061SR2M is a strong candidate, offering a direct upgrade path.
Many alternatives are in non-compatible DIP packages, requiring a board redesign.
Selecting a random-phase driver instead of a zero-cross driver will cause circuit malfunction.
The MOC304x/306x series is widely available from multiple vendors.
MOC3061SR2M is a potential direct replacement for MOC3041SR2M, offering an upgraded 600V blocking voltage. Pinout should be verified via datasheet comparison before use.
The best replacement path is MOC3061SR2M, which offers a higher voltage rating in the same package from the same manufacturer.
The main risks in replacing MOC3041SR2M are package incompatibility with through-hole versions and functional mismatch with random-phase drivers.

onsemi
A likely pin-compatible upgrade with a higher 600V blocking voltage and identical trigger current.
| Feature / factor | MOC3041SR2M | MOC3061SR2M | MOC3041M | MOC3061M | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 6-SMD, Gull Wing | 6-SMD, Gull Wing | 6-DIP | 6-DIP | 6-SMD, Gull Wing / 6-DIP — Package and pin count match, suggesting form/fit compatibility.; MOC3041M: Package mismatch: candidate is through-hole, target is surface-mount.; MOC3061M: Package mismatch: candidate is through-hole, target is surface-mount. |
| Voltage | 400V | 600V | 400V | 600V | 600V / 400V — Higher blocking voltage is a safe upgrade.; MOC3041M: Blocking voltage is identical.; MOC3061M: Higher blocking voltage is a safe upgrade. |
| Current | 15mA | 15mA | 15mA | 15mA | 15mA — LED trigger current is identical.; MOC3041M: LED trigger current is identical.; MOC3061M: LED trigger current is identical. |
| Function | Zero-Cross | Zero-Cross | - | - | Zero-Cross — Both are zero-crossing drivers. |
The best alternative for MOC3041SR2M is likely MOC3061SR2M. It comes in the same 6-SMD package and offers a higher blocking voltage of 600V, making it a robust, potentially pin-compatible upgrade.