isocom components ltd unit 25b, park view road west, park view industrial estate, brenda road hartlepool, cleveland, ts25 1ud tel: (01429) 863609 fax :(01429) 863581 db92855 high density mounting ac input, phototransistor optically coupled isolators description the is126 is an optically coupled isolator consisting of two infrared light emitting diodes connected in inverse parallel and npn silicon photo transistor in a space efficient dual in line plastic package. features z marked as FPA1. z current transfer ratio min. 20% z isolation voltage (3.75kv rms ,5.3kv pk ) z all electrical parameters 100% tested z drop in replacement for toshiba tlp126 applications z computer terminals z industrial systems controllers z measuring instruments z signal transmission between systems of different potentials and impedances 27/11/08 dimensions in mm is126 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 power dissipation 70mw output transistor collector-emitter voltage bv ceo 35v emitter-collector voltage bv eco 6v collector current 50ma 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 output collector-emitter breakdown (bv ceo )35 v i c = 0.1ma emitter-collector breakdown (bv eco ) 6 v i e = 10 a collector-emitter dark current (i ceo ) 100 n a v ce = 20v coupled current transfer ratio (ctr) 20 400 % 1ma i f , 5v v ce collector-emitter saturation voltagev ce (sat) 0.2 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 v io = 500v (note 1) output rise time tr 4 18 sv ce = 2v , output fall time tf 3 18 si c = 2ma, r l = 100 electrical characteristics ( t a = 25c unless otherwise noted ) note 1 measured with input leads shorted together and output leads shorted together. db92855 27/11/08
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