fto fto - - 1221u 1221u single channel - surface mount optocoupler features: high reliabili ty no base lead for improved noise immunity rugged surface mount package stability over wide temperature +1kv electrical isolation applications: eliminate ground loops level shifting line receiver switching power supplies motor control description the fto - 1221u contains a gallium aluminum arsenide led optically coupled to a silicon planar phototransistor. the optocoupler is built in a 4 pin leadless chip carrier. this optocoupler is capable of transmitting signals between two galvanic sources. the pote ntial difference between transmitter and receiver should not go over the maximum isolation voltage. the internal base connection has been eliminated for improved noise immunity. absolute maximum ratings input to output voltage ................................ ................................ ................................ ............................ 1000v emitter - collector volt age ................................ ................................ ................................ ............................... 5v collector - emitter voltage (value applies to emitter - base open - circuited & the input - diode equal to zero) ............ 35v reverse input voltage ................................ ................................ ................................ ................................ .. 2v input diode continuous forward current at (or below) 65c free - air temperature (see note 1) ................... 40ma continuous colle ctor current ................................ ................................ ................................ .................... 50ma continuous transistor power dissipation at (or below) 25c free - air temperature (see note 2) ................ 300mw storage temperature ................................ ................................ ................................ .............. - 65c to +150c operating free - air temperature range ................................ ................................ ..................... - 55c to +125c lead solder temperature (10 seconds max.) ................................ ................................ ............................ 240c notes: 1. derate linearly to 125c free - air temperature at the rate of 0.67 ma/c above 65c. 2. derate linearly to 125c free - air temperature at the rate of 3 mw/c. recommended operating conditions: parameter symbol min max unit input current, low level i fl 0 1 m a input current, high level i fh 1.5 10 ma supply voltage v ce 5 50 v operating temperature t a - 55 125 c selection guide part number part description fto - 1221u - 001 single channel optocoupler, commercial ( - 55 to +125c operating temperature range) fto - 1221u - 101 single channel optocoupler, tx processed ( - 55 to +125c operating temperature range) www.forcetechnologies.co.uk
fto fto - - 1221 1221 single channel optocoupler el ectrical characteristics input diode t a = 25 c unless otherwise specified. parameter symbol min max unit test conditions input diode static reverse current i r 100 a v r = 2.0v input diode static forward voltage v f 1.5 v i f = 10m a input diode static forward voltage - 55 c v f 1.7 v i f = 10ma input diode static forward voltage +125 c v f 1.3 v i f = 10ma output transistor t a = 25 c unless otherwise specified. parameter symbol min max unit test conditions collector - em itter breakdown voltage v (br)ceo 30 v i c = 1ma, i b = 0, i f = 0 emitter - collector breakdown voltage v (br)eco 5 v i c = 0ma, i e = 100 m a, i f = 0 collector - emitter dark current - 55 c +125 c i ceo1 i ceo2 i ceo3 100 100 100 na na m a v ce = 20v, i f = 0ma coupled characteristics t a = 25 c unless otherwise specified. parameter symbol min max unit test condition s on state collector current i c(on)1 2.0 ma v ce = 1v, i f = 1.0ma on state collector current i c(on)2 15.0 ma v ce = 1v, i f = 15ma on state collector current i c(on)3 40.0 ma v ce = 5v, i f = 10.0ma on state c ollector current i c(on)4 15.0 ma v ce = 5v, i f = 15ma on state collector current i c(on)5 1.0 ma v ce = 15v, i f = 1.0ma on state collector current i c(on) 2.5 ma v ce = 5v, i f = 1.5ma, t a = - 55 c on state colle ctor current i c(on) 2.5 ma v ce = 5v, i f = 1.5ma, t a =+125 c collector - emitter saturation voltage v ce(sat) 0.22 v i f = 20ma, i c = 10ma isolation resistance r iso 10 5 w v in - out = 500v isolation voltage v iso 1050 t = 5s propagation d elay h - l t phl 4.0 v cc =10v, i f = 10.0ma, r l =100 w propagation delay l - h t plh 4.0 v cc =10v, i f = 10.0ma, r l =100 w rise time t r 20 m s v cc =10v, i f = 10.0ma, r l =100 w fall time t f 20 m s v cc =10v, i f = 10.0ma, r l =100 w
package dimensions schematic diagram rev:01104 4
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