2 cogan ave, plattsburgh northwich, cheshire 2150 ward, montreal ny, 12901, usa cw9 7tn, united kingdom que, h4m 1t7, canada tel: 518-561-3160 tel: 01606-41999 tel: 514-744-5507 fax: 514-747-3906 fax: 01606-49706 fax: 514-747-3906 STS-8831 dual channel optical switch assembly over / under optical axis features non contact switching four wires for electrical connection fast switching speed description the STS-8831 consists of a pair of infrared emitting diodes and a pair of npn phototransistors mounted on opposite sides of a 5.1 mm. wide slot. phototransistor switching takes place whenever an opaque object passes through the slot. the phototransistors have a 0.5x1.5 mm internal aperture for increased resolution. the polysulfone housing (note 1) reduces interference from ambient light and provides dirt and dust protection. 340 mm length wires may be terminated with an idc connector upon special order. absolute maximum ratings operating & storage temp. -40 c to +100 c input diode pair reverse voltage 6 v average forward current 50 ma peak forward current (1 m s pulse) 3 a power dissipation (note 2) 200 mw phototransistor (each) collector-emitter voltage 30 v emitter-collector voltage 5 v power dissipation (note 3) 100 mw dimensions in mm (-/+ 0.12) optical centerline 8.0 16.5 11.4 3.0 6.35 ch. 1 ch. 2 c l c l c l c l 34.8 ? 3.0 ? 6.6 3.8 (2 pl) 13.2 16.0 5.1 gray blk (gnd) green sensor output (ch. 1) white sensor output (ch. 2) schematic electrical characteristics (t a =25 c unless otherwise noted) symbol parameter min typ max units test conditions input diode v f forward voltage 2.4 3.4 v i f = 40 ma i r reverse current 100 m a v r = 4 v output phototransistor i ceo collector dark current 100 na v ce = 10v, ee = 0, i f = 0 bv ceo collector-emitter breakdown voltage 30 v i c = 100 m a, ee = 0 bv eco emitter-collector breakdown voltage 5 v i c = 100 m a, ee = 0 coupled v ce(sat) collector emitter saturation voltage 0.4 v i c = 250 m a, i f = 25 ma i c(on) on-state collector current 400 m a v ce = 10v, i f = 25 ma i cx cross talk 200 m a i f = 25 ma, v ce = 2.0 v specifications subject to change without notice 103327 rev 1 notes: (1) plastic housing is soluble in chlorinated hydrocarbons and ketones. recommended cleaning agents are methanol or isopropanol. (2) derate line arly 2.6 mw/ c above 25 c. (3) derate linearly 1.3 mw/ c above 25 c.
|
