I have a Numatic nsx 550 that I am repairing and I have come across this component that isn’t testing with a multimeter, I was wondering is anyone here could help me find that type of component this is and possibly a way of testing it, it says Isig k06 on it

 

I have a Numatic nsx 550 that I am repairing and I have come across this component that isn’t testing with a multimeter, I was wondering is anyone here could help me find that type of component this is and possibly a way of testing it, it says Isig k06 on it

They seem to be diodes. Your meter should have a diode test setting.

 

Welcome to AAC!

I was wondering is anyone here could help me find that type of component this is and possibly a way of testing it

The stripe on the package and the D designation likely means it's a diode. Use the diode setting on your DVM. Negative lead on the cathode (end with the stripe), positive on the anode.

What makes you suspect it's bad? It doesn't look any different than the other 4 components of the same type.