5200 st. patrick st., montreal the old railway, princes street que., h4e 4n9, canada ulverston, cumbria, la12 7nq, uk tel: 514 - 768 - 8000 tel: 01 229 581 551 fax: 514 - 768 - 8889 fax: 01 229 581 5 54 qf - 84 rev 1 norps - 12 cds photocell plastic package description the norps - 12 is a cds photoconductive cell with a spectral response s imilar to that of the human eye, encapsulated in a moisture - resistant coating and enclosed in a plastic casing. absolute ratings maximum operating temperature - 60 to +75 c storage temperature - 60 to +75 c voltage (peak ac or dc) 250 volts power dissi pation at 30 c (2) 250mw electrical characteristics (t a =25 c unless otherwise noted) symbol parameter min. typ. max. units test conditions r l light resistance 5.4 12.6 k w 1 ftc. (1) r d dark resistance 1.0 m w 15 sec. after removal of test light. l p spectral peak 550 nm specifications subject to change without notice 104510 rev 0 notes: (1) cells light adapted at 30 to 50 ftc for 16 hrs minimum prior to electrical tests. (2) derate linearly to zero at 75 c.
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