document number: 81687 for technical questions, contact: optocoupler.answers@vishay.com www.vishay.com rev. 1.4, 12-may-09 771 optocoupler, phototransistor output, sot-223/10, quad channel sfh6943a vishay semiconductors description the sfh6943a is a four cha nnel mini-optocoupler suitable for high density packaged pcb application. it has a minimum of 1768 v rms isolation from input to output. the device consists of four phototransisto rs as detectors. each channel is individually controlled. th e optocoupler is housed in a sot-223/10 package. all the cathodes of the input leds and all the collectors of the out put transistors are common enabling a pin count reduction from 16 pins to 10 pins a significant space savings as compared to four channels that are electrically isolated individually. features ? transistor optocoupler in sot-223/10 package ? end stackable, 1.27 mm spacing ? low current input ? good ctr linearity versus forward current ? minor ctr degradation ? high collector emitter voltage, v ceo = 70 v ? low coupling capacitance ? high common mode transient immunity ? isolation test voltage: 1768 v rms ? compliant to rohs directive 2002/95/ec and in accordance to weee 2002/96/ec applications ? telecommunication ?smt ?pcmcia ? instrumentation agency approvals ? ul1577, file no. e52744 system code v ? csa 93751 i179077 a1 a2 com. c3 a4 a5 10 e1 9e2 8 com. c 7e3 6e4 order information part remarks sfh6943a-2 ctr 63 % to 200 %, smd-10 sfh6943a-3 ctr 100 % to 320 %, smd-10 absolute maximum ratings (1) parameter test condition symbol value unit input reverse voltage v r 3v dc forward current i f 3ma surge forward current t p 10 s i fsm 100 ma total power dissipation p diss 10 mw output collector emitter voltage v ce 70 v emitter collector voltage v ec 7v collector current i c 10 ma surge collector current t p < 1 ms i fsm 20 ma total power dissipation p diss 20 mw
www.vishay.com for technical questions, contact: optocoupler.answers@vishay.com document number: 81687 772 rev. 1.4, 12-may-09 sfh6943a vishay semiconductors optocoupler, phototransistor output, sot-223/10, quad channel notes (1) t amb = 25 c, unless otherwise specified. stresses in excess of the absolute maximum ratings can cause per manent damage to the device. functional operation of the device is not implied at these or any other c onditions in excess of t hose given in the operational sections of this document. exposure to abs olute maximum ratings for extended periods of the time can adversely affect reliability. (2) refer to reflow profile for solderi ng conditions for surface mounted devices. note t amb = 25 c, unless otherwise specified. minimum and maximum values are testing requi rements. typical values ar e characteristics of the device and are the result of eng ineering evaluation. typical values are for information only and are not part of the testing requirements. coupler isolation test voltage between emitter and detector t = 1 s v iso 1768 v rms creepage distance 4mm clearance distance 4mm comparative tracking index per din iec 112/vde 0303, part 1 cti 175 isolation resistance v io = 100 v, t amb = 25 c r io 10 11 v io = 100 v, t amb = 100 c r io 10 10 storage temperature range t stg - 55 to + 150 c ambient temperature range t amb - 55 to + 100 c junction temperature t j 100 c soldering temperature, dip soldering plus reflow sold ering processes (2) t = 10 s maximum t sld 260 c electrical characteristics parameter test condition symbol min. typ. max. unit input forward voltage i f = 3 ma v f 1.25 v reverse current v r = 3 v i r 0.01 10 a capacitance v r = 0 v, f = 1 mhz c o 5pf thermal resistance r thja 1000 k/w output collector emitter voltage i ce = 10 a v ceo 70 v emitter collector voltage i ec = 10 a v eco 7v collector emitter capacitance v ce = 5 v, f = 1 mhz c ce 6pf thermal resistance r thja 500 k/w collector emitter leakage current v ce = 10v i ceo 50 na coupler coupling capacitance c c 1pf absolute maximum ratings (1) parameter test condition symbol value unit current transfer ratio parameter test condition part symbol min. typ. max. unit coupling transfer ratio i f = 1 ma, v ce = 1.5 v sfh6943a-2 i e /i f 63 200 % sfh6943a-3 i e /i f 100 320 % i f = 0.5 ma, v cc = 5 v sfh6943a-2 i e /i f 32 100 % sfh6943a-3 i e /i f 50 160 %
document number: 81687 for technical questions, contact: optocoupler.answers@vishay.com www.vishay.com rev. 1.4, 12-may-09 773 sfh6943a optocoupler, phototransistor output, sot-223/10, quad channel vishay semiconductors typical characteristics t amb = 25 c, unless otherwise specified fig. 1 - switching times (typ.) fig. 2 - switching waveform fig. 3 - led current vs. led voltage fig. 4 - non-saturated current transfer switching characteristics parameter test condition symbol min. typ. max. unit turn-on time i e = 2 ma, r e = 100 , v cc = 5 v t on 3s rise time i e = 2 ma, r e = 100 , v cc = 5 v t r 2.6 s turn-off time i e = 2 ma, r e = 100 , v cc = 5 v t off 3.1 s fall time i e = 2 ma, r e = 100 , v cc = 5 v t f 2.8 s isfh6943_01 v o v cc =5 v r e = 100 f=10 khz d f = 50 % i f i e = 2 ma isfh6943_02 v 0 i f t r t f t off t o n 0.01 0.1 1 10 0. 8 0.9 1.0 1.1 1.2 1.3 1.4 v f ( v ) i f (ma) 8 5 c 50 c 25 c - 25 c 21042 0 1 2 3 4 5 6 0.1 1 10 i f (a) n ctr n ormalized to n ctr = f (i f ) v ce = 1.5 v i f = 1 ma 21043
www.vishay.com for technical questions, contact: optocoupler.answers@vishay.com document number: 81687 774 rev. 1.4, 12-may-09 sfh6943a vishay semiconductors optocoupler, phototransistor output, sot-223/10, quad channel fig. 5 - transistor capacitances (typ.) fig. 6 - collector emitter leakage current (typ.) fig. 7 - permissible forward current diode fig. 8 - permissible power dissipation fig. 9 - switching time fig. 10 - transistor ou tput characteristics isfh6943_05 c ce 25.0 22.5 20.0 17.5 15.0 12.5 10.0 7.5 5.0 2.5 0 c ce (pf) 10 -2 10 -1 10 0 10 1 10 2 v ce ( v ) f = 1 mhz c ce = f ( v ce ) isfh6943_06 10 3 10 2 10 1 10 0 10 -1 10 -2 10 -3 010203040506070 v ce ( v ) i ceo (na) i f = 0, i ceo = f ( v ce ) isfh6943_07 8 7 6 5 4 3 2 1 0 i f (ma) t a (c) 010203040506070 8 0 90 100 i f = f isfh6943_0 8 30 25 20 15 10 5 0 p tot (m w ) t a (c) 0 10203040506070 8 090100 transistor diode p tot = f (t a ) 1 10 100 1000 100 1000 10 000 100 000 r l ( ) t ( s) i f = 1 ma v cc = 5 v t on , t r , t off , t f = f (r l ) t on t r t off t f 21044 0 1 2 3 4 5 6 7 8 0.1 1 10 v ce ( v ) i ce (ma) 21045 i f = 3 ma i f = 2 ma i f = 1 ma
document number: 81687 for technical questions, contact: optocoupler.answers@vishay.com www.vishay.com rev. 1.4, 12-may-09 775 sfh6943a optocoupler, phototransistor output, sot-223/10, quad channel vishay semiconductors package dimensions in inches (millimeters) r 0.005 (0.13) 0.050 (1.27) 0.026 (0.66) 0.024 (0.61) 0.216 (5.49) 0.296 (7.52) 0.053 (1.35) 0.040 (1.02) 0.010 (0.25) i17 8 044 0.063 0.004 (1.60 0.10) 0.01 8 (0.46) 0.035 (0.90) 0.016 (0.41) iso method a 0.043 (1.09) 10 7 0.002 + 0.002 - 0.001 (0.05 + 0.05 - 0.03) 0.256 0.004 (6.50 0.10) 0.20 0 0.005 (5. 8 0 0.13) 10 max. 0.020 (0.51) min. 7 45 0.010r (0.25) 0 to 7 0.01 (0.25) r 0.02 0 0.004 (0.51 0.10) 0.13 8 0.004 (3.51 0.10) 0.276 0.00 8 (7.0 1 0.20) 0.004 (0.10)
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