As far as I'm aware of these relay series they are copies of the NEC EA2 series.
So I checked and the NEC type was EA2-5tnu (EA2-5TNP is with paladium) also UL and CSA approved
The NEC series is now IMO Precision CONTROLS you might be able to still order through them as Farnell has the standard version EA2-5NU (FP1833109 or NS74R1567).
IMO should also be able to confirm the specs.
Hope this can help you out on this issue
Marco de Grauw
Technical Support & Quotes advisor
Farnell The Netherlands
Missed that one and these are in stock at Farnell/Newark.
I knew about the IMO/NEC parts from the past so that was the first to come up in mind.
The G6H was discontinued due to lack of sales, and also because of the old technology used to produce the parts. Therefore we suggest that customers move on to the next generation of signal relays for new designs.
In this case we would suggest looking at our G6SK-2F SMD relays - ( available via Farnell ). However please be aware that these are not drop in replacements.