2015SJ/T 2215-2015 Measuring methods for semiconductor photocouplers
1982SJ 2215.9-1982 Method of measurement for reverse cut-off current of semiconductor photocouplers transistors
SJ 2215.9-1982 Method of measurement for reverse cut-off current of semiconductor photocouplers transistors was changed to SJ/T 2215-2015 Measuring methods for semiconductor photocouplers.