Opto LED part numbers and replacing them in pairs

The original MT5000UR is obsolete. Later production used the TLRH180P, now sold as the RoHS version TLRH180P(F). The MV8114 (660 nm) is a usable substitute but only just matches, so always replace the emitter and receiver together as a matched pair.

Systems

• Data East/Sega CPU Version 3b

Related tips

• Alien head opto stuck on after cleaning: replace the opto pair
• Ball trough optos work intermittently

Source: Repairing DataEast 1987 (Laser War) to Sega 1995 (Batman Forever), Part Three, Clay Harrell (pinrepair.com)