isocom components ltd unit 25b, park view road west, park view industrial estate, brenda road hartlepool, cleveland, ts25 1yd tel: (01429) 863609 fax :(01429) 863581 high density mounting photodarlington optically coupled isolators description the is355 is an optically coupled isolator consisting of an infrared light emitting diode and npn silicon photodarlington in a space efficient dual in line plastic package. features l marked as FPD1. l current transfer ratio min. 600% l isolation voltage (3.75kv rms ,5.3kv pk ) l all electrical parameters 100% tested l drop in replacement for sharp pc355 applications l computer terminals l industrial systems controllers l measuring instruments l signal transmission between systems of different potentials and impedances is355 db92859l-aas/a5 29/8/07 dimensions in mm 3.85 +- 0.3
absolute maximum ratings (25c unless otherwise specified) storage temperature -55c to + 150c operating temperature -55c to + 100c lead soldering temperature (1/16 inch (1.6mm) from case for 10 secs) 260c input diode forward current 50ma reverse voltage 6v power dissipation 70mw output transistor collector-emitter voltage bv ceo 35v emitter-collector voltage bv eco 6v collector current 80ma power dissipation 150mw power dissipation total power dissipation 170mw (derate linearly 2.26mw/ c above 25c) parameter min typ max units test condition input forward voltage (v f ) 1.2 1.4 v i f = 20ma reverse current (i r ) 10 m a v r = 4v output collector-emitter breakdown (bv ceo ) 35 v i c = 0.1ma emitter-collector breakdown (bv eco ) 6 v i e = 10ua collector-emitter dark current (i ceo ) 1 ua v ce = 10v coupled current transfer ratio (ctr) 600 7500 % 1ma i f , 2v v ce collector-emitter saturation voltagev ce (sat) 1 v 20ma i f , 1ma i c input to output isolation voltage v iso 3750 v rms see note 1 5300 v pk see note 1 input-output isolation resistance r iso 5x10 10 w v io = 500v (note 1) output rise time tr 4 18 m s v ce = 2v , output fall time tf 3 18 m s i c = 2ma, r l = 100 w electrical characteristics ( t a = 25c unless otherwise noted ) note 1 measured with input leads shorted together and output leads shorted together. db92859l-aas/a5 29/8/07
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