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il300 document number 83622 rev. 1.5, 24-mar-05 vishay semiconductors www.vishay.com 1 i179026 a c nc nc c a a c 1 2 3 4 8 7 6 5 k2 k1 linear optocoupler, high gain stability, wide bandwidth features ? couples ac and dc signals 0.01 % servo linearity wide bandwidth, > 200 khz high gain stability, 0.05 %/ c low input-output capacitance low power consumption, < 15 mw isolation test voltage, 5300 v rms , 1.0 sec. internal insulation distance, > 0.4 mm for vde component in accordance to rohs 2002/95/ec and weee 2002/96/ec agency approvals ul file #e52744 din en 60747-5-2 (vde0884) din en 60747-5-5 pending available with option 1, add -x001 suffix applications power supply feedback voltage/current medical sensor isolation audio signal interfacing isolated process control transducers digital telephone isolation description the il300 linear optocoupler consists of an algaas irled irradiating an isolated feedback and an output pin photodiode in a bifurcated arrangement. the feedback photodiode captures a percentage of the led?s flux and generates a control signal (i p1 ) that can be used to servo the led drive current. this tech- nique compensates for the led?s non-linear, time, and temperature characteristics. the output pin pho- todiode produces an output signal (i p2 ) that is linearly related to the servo optical flux created by the led. the time and temperature stability of the input-output coupler gain (k3) is insured by using matched pin photodiodes that accurately track the output flux of the led. order information for additional information on the available options refer to option information. part remarks il300 k3 = 0.557 - 1.618, dip-8 il300-defg k3 = 0.765 - 1.181, dip-8 il300-ef k3 = 0.851 - 1.061, dip-8 il300-e k3 = 0.851 - 0.955, dip-8 il300-f k3 = 0.945 - 1.061, dip-8 il300-x006 k3 = 0.557 - 1.618, dip-8 400mil (option 6) il300-x007 k3 = 0.557 - 1.618, smd-8 (option 7) il300-x009 k3 = 0.557 - 1.618, smd-8 (option 9) il300-defg-x006 k3 = 0.765 - 1.181, dip-8 400 mil (option 6) il300-defg-x007 k3 = 0.765 - 1.181, smd-8 (option 7) il300-defg-x009 k3 = 0.765 - 1.181, smd-8 (option 9) il300-ef-x006 k3 = 0.851 - 1.061, dip-8 400 mil (option 6) il300-ef-x007 k3 = 0.851 - 1.061, smd-8 (option 7) il300-ef-x009 k3 = 0.851 - 1.061, smd-8 (option 9) il300-e-x006 k3 = 0.851 - 0.955, dip-8 400 mil (option 6) il300-e-x007 k3 = 0.851 - 0.955, smd-8 (option 7) il300-e-x009 k3 = 0.851 - 0.955, smd-8 (option 9) il300-f-x006 k3 = 0.945 - 1.061, dip-8 400 mil (option 6) il300-f-x007 k3 = 0.945 - 1.061, smd-8 (option 7) il300-f-x009 k3 = 0.945 - 1.061, smd-8 (option 9)
www.vishay.com 2 document number 83622 rev. 1.5, 24-mar-05 vishay il300 vishay semiconductors operation description a typical application circuit (figure 1) uses an opera- tional amplifier at the circuit input to drive the led. the feedback photodiode sources current to r1 con- nected to the inverting input of u1. the photocurrent, i p1 , will be of a magnitude to satisfy the relationship of (i p1 = v in /r1). the magnitude of this current is directly proportional to the feedback transfer gain (k1) times the led drive current ( v in /r1 = k1 i f ). the op-amp will supply led current to force sufficient photocurrent to keep the node voltage (vb) equal to va. the output photodiode is connected to a non-invert- ing voltage follower amplifier. the photodiode load resistor, r2, performs the current to voltage conver- sion. the output amplifier voltage is the product of the output forward gain (k2) times the led current and photodiode load, r2 ( v o = i f k2 r2). therefore, the overall transfer gain (v o /v in ) becomes the ratio of the product of the output forward gain (k2) times the photodiode load resistor (r2) to the product of the feedback transfer gain (k1) times the input resistor (r1). this reduces to v o /v in =(k2 r2)/(k1 r1). the overall transfer gain is completely independent of the led forward current. the il300 transfer gain (k3) is expressed as the ratio of the output gain (k2) to the feedback gain (k1). this shows that the circuit gain becomes the product of the il300 transfer gain times the ratio of the output to input resistors v o /v in = k3 (r2/r1). k1-servo gain the ratio of the input photodiode current (i p1 ) to the led current (i f ) i.e., k1 = i p1 /i f . k2-forward gain the ratio of the output photodiode current (i p2 ) to the led current (i f ), i.e., k2 = i p2 /i f . k3-transfer gain the transfer gain is the ratio of the forward gain to the servo gain, i.e., k3 = k2/k1. ? k3-transfer gain linearity the percent deviation of the transfer gain, as a func- tion of led or temperature from a specific transfer gain at a fixed led current and temperature. photodiode a silicon diode operating as a current source. the out- put current is proportional to the incident optical flux supplied by the led emitter. the diode is operated in the photovoltaic or photoconductive mode. in the pho- tovoltaic mode the diode functions as a current source in parallel with a forward biased silicon diode. the magnitude of the output current and voltage is dependent upon the load resistor and the incident led optical flux. when operated in the photoconduc- tive mode the diode is connected to a bias supply which reverse biases the silicon diode. the magni- tude of the output current is directly proportional to the led incident optical flux. led (light emitting diode) an infrared emitter constructed of algaas that emits at 890 nm operates efficiently with drive current from 500 a to 40 ma. best linearity can be obtained at drive currents between 5.0 ma to 20 ma. its output flux typically changes by - 0.5 % /c over the above operational current range. application circuit figure 1. typical application circuit iil300_01 8 7 6 5 k1 1 2 3 4 k2 r1 r2 il300 vb va + - u1 vin lp 1 - u2 + lp 2 v out v cc v cc v cc v cc i f v c +
vishay il300 document number 83622 rev. 1.5, 24-mar-05 vishay semiconductors www.vishay.com 3 absolute maximum ratings t amb = 25 c, unless otherwise specified stresses in excess of the absolute maximum ratings can cause per manent damage to the device. f unctional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of this document. exposure to absolute maximum rating for extended periods of the time can adversely affect reliability. input output coupler parameter test condition symbol value unit power dissipation p diss 160 mw derate linearly from 25 c 2.13 mw/c forward current i f 60 ma surge current (pulse width < 10 s) i pk 250 ma reverse voltage v r 5.0 v thermal resistance r th 470 k/w junction temperature t j 100 c parameter test condition symbol value unit power dissipation p diss 50 ma derate linearly from 25 c 0.65 mw/c reverse voltage v r 50 v junction temperature t j 100 c thermal resistance r th 1500 k/w parameter test condition symbol value unit total package dissipation at 25 c p tot 210 mw derate linearly from 25 c 2.8 mw/c storage temperature t stg - 55 to + 150 c operating temperature t amb - 55 to + 100 c isolation test voltage > 5300 v rms isolation resistance v io = 500 v, t amb = 25 c r io > 10 12 ? v io = 500 v, t amb = 100 c r io > 10 11 ?
www.vishay.com 4 document number 83622 rev. 1.5, 24-mar-05 vishay il300 vishay semiconductors electrical characteristics t amb = 25 c, unless otherwise specified minimum and maximum values are testing requirements. typical val ues are 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. input led emitter output parameter test condition symbol min ty p. max unit forward voltage i f = 10 ma v f 1.25 1.50 v v f temperature coefficient ? v f / ? c - 2.2 mv/c reverse current v r = 5 v i r 1.0 a junction capacitance v f = 0 v, f = 1.0 mhz c j 15 pf dynamic resistance i f = 10 ma ? v f / ? i f 6.0 ? parameter test condition symbol min ty p. max unit dark current v det = -15 v, i f = 0 si d 1.0 25 na open circuit voltage i f = 10 ma v d 500 mv short circuit current i f = 10 ma i sc 70 a junction capacitance v f = 0, f = 1.0 mhz c j 12 pf noise equivalent power v det = 15 v nep 4 x 10 14 w/ hz
vishay il300 document number 83622 rev. 1.5, 24-mar-05 vishay semiconductors www.vishay.com 5 coupler 1. bin sorting: k3 (transfer gain) is sorted into bins that are 6 % , as follows: bin a = 0.557 - 0.626 bin b = 0.620 - 0.696 bin c = 0.690 - 0.773 bin d = 0.765 - 0.859 bin e = 0.851 - 0.955 bin f = 0.945 - 1.061 bin g = 1.051 - 1.181 bin h = 1.169 - 1.311 bin i = 1.297 - 1.456 bin j = 1.442 - 1.618 k3 = k2/k1. k3 is tested at i f = 10 ma, v det = - 15 v. 2. bin categories: all il300s are sorted into a k3 bin, indica ted by an alpha character that is marked on the part. the bins ra nge from "a" through "j". the il300 is shipped in tubes of 50 each. each tube contains onl y one category of k3. the category of the parts in the tube is marked on the tube label as well as on each individual part. 3. category options: standard il300 orders will be shipped from the ca tegories that are available at the time of the order. any of the ten categories may be shipped. for customers requiring a narrower sele ction of bins, four different bin option parts are offered. il300-defg: order this part number to receive categories d,e,f,g only. il300-ef: order this part number to receive categories e, f only. il300-e: order this part number to receive category e only. switching characteristics parameter test condition symbol min ty p. max unit input- output capacitance v f = 0 v, f = 1.0 mhz 1.0 pf k1, servo gain (i p1 /i f )i f = 10 ma, v det = - 15 v k1 0.0050 0.007 0.011 servo current, see note 1,2 i f = 10 ma, v det = - 15 v i p1 70 a k2, forward gain (i p2 /i f )i f = 10 ma, v det = - 15 v k2 0.0036 0.007 0.011 forward current i f = 10 ma, v det = - 15 v i p2 70 a k3, transfer gain (k2/k1) see note 1,2 i f = 10 ma, v det = - 15 v k3 0.56 1.00 1.65 k2/k1 transfer gain linearity i f = 1.0 to 10 ma ? k3 0.25 % i f = 1.0 to 10 ma, t amb = 0 c to 75 c 0.5 % photoconductive operation frequency response i fq = 10 ma, mod = 4.0 ma, r l = 50 ? bw (-3 db) 200 khz phase response at 200 khz v det = - 15 v -45 deg. parameter test condition symbol min ty p. max unit switching time ? i f = 2.0 ma, i fq = 10 ma t r 1.0 s t f 1.0 s rise time t r 1.75 s fall time t f 1.75 s
www.vishay.com 6 document number 83622 rev. 1.5, 24-mar-05 vishay il300 vishay semiconductors common mode transient immunity typical characteristics (tamb = 25 c unless other wise specified) parameter test condition symbol min ty p. max unit common mode capacitance v f = 0, f = 1. mhz c cm 0.5 pf common mode rejection ratio f = 60 hz, r l = 2.2 k ? cmrr 130 db figure 2. led forward current vs.forward voltage figure 3. led forward current vs.forward voltage iil300_02 1.4 1.3 1.2 1.1 0 5 10 15 20 25 30 35 vf - led forward voltage - v if - led current - ma 1.0 iil300_03 1.0 1.1 1.2 1.3 1.4 .1 1 10 100 vf - led forward voltage - v if - led current - ma figure 4. servo photocurrent vs . led current and temperature figure 5. servo photocurrent vs . led current and temperature iil300_04 0c 25c 50c 75c v d =15v .1 1 10 100 300 250 200 150 100 50 0 i f - led current - ma ip1 - servo photocurrent - a iil300_05 .1 1 10 100 1000 100 10 1 i f - led current - ma ip1 - servo photocurrent - a v d = C15 v 0c 25c 50c 75c
vishay il300 document number 83622 rev. 1.5, 24-mar-05 vishay semiconductors www.vishay.com 7 figure 6. normalized servo photocurrent vs. led current and temperature figure 7. normalized servo photocurrent vs. led current and temperature figure 8. servo gain vs. led current and temperature iil300_06 0 5 10 15 20 25 3.0 2.5 2.0 1.5 1.0 0.5 0.0 i f - led current - ma normalized photocurrent normalized to: ip1@ i f =10 ma, t a =25c v d =C15 v 0c 25c 50c 75c iil300_07 .1 1 10 100 10 1 .1 .01 i f - led current - ma 0c 25c 50c 75c ip1 - normalized photocurrent normalized to: ip1@ i f =10 ma, t a =25c v d =C15 v iil300_08 .1 1 10 100 i f - led current - ma nk1 - normalized servo gain 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0c 25c 50c 75c 85c figure 9. normalized servo gain vs. led current and temperature figure 10. transfer gain vs. led current and temperature figure 11. normalized transfer gain vs. led current and temperature iil300_09 .1110100 i f - led current - ma nk1 - normalized servo gain 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0c 25c 50c 75c 100c normalized to: i f = 10 ma, t a = 25c iil300_10 0 5 10 15 20 25 1.010 1.005 1.000 0.995 0.990 i f - led current - ma k3 - transfer gain - (k2/k1) 0c 25c 50c 75c iil300_11 0 5 10 15 20 25 1.010 1.005 1.000 0.995 0.990 i f - led current - ma k3 - transfer gain - (k2/k1) 0c 25c 50c 75c normalized to: i f =10ma, t a = 25c
www.vishay.com 8 document number 83622 rev. 1.5, 24-mar-05 vishay il300 vishay semiconductors application considerations in applications such as monitoring the output voltage from a line powered switch mode power supply, mea- suring bioelectric signals, interfacing to industrial transducers, or making floating current measure- ments, a galvanically isolated, dc coupled interface is often essential. the il300 can be used to construct an amplifier that will meet these needs. the il300 eliminates the problems of gain nonlinear- ity and drift induced by time and temperature, by mon- itoring led output flux. a pin photodiode on the input side is optically cou- pled to the led and produces a current directly pro- portional to flux falling on it. this photocurrent, when coupled to an amplifier, provides the servo signal that controls the led drive current. the led flux is also coupled to an output pin photo- diode. the output photodiode current can be directly or amplified to satisfy the needs of succeeding cir- cuits. isolated feedback amplifier the il300 was designed to be the central element of dc coupled isolation amplifiers. designing the il300 into an amplifier that provides a feedback control sig- nal for a line powered switch mode power is quite sim- ple, as the following example will illustrate. see figure 17 for the basic structure of the switch mode supply using the infineon tda4918 push-pull switched power supply control chip. line isolation and insulation is provided by the high frequency transformer. the voltage monitor isolation will be pro- vided by the il300. figure 12. amplitude response vs. frequency figure 13. amplitude and phase response vs. frequency figure 14. common-mode rejection iil300_12 10 4 10 5 10 6 5 0 -5 -10 -15 -20 f - frequency - hz amplitude response - db r l =1.0 k ? r l =10 k ? i f =10 ma, mod = 2.0 ma (peak) iil300_13 db phase ? - phase response - 10 3 10 4 10 5 10 6 10 7 5 0 -5 -10 -15 -20 45 0 -45 -90 -135 -180 f - frequency - hz amplitude response - db i fq =10 ma mod= 4.0 ma t a =25c r l =50 ? iil300_14 10 100 1000 10000 100000 1000000 -130 -120 -110 -100 -90 -80 -70 -60 f - frequency - hz cmrr - rejection ratio - db figure 15. photodiode junction capacitance vs. reverse voltage iil300_15 0 2 4 6 8 10 12 14 voltage - v det capacitance - pf 0246810
vishay il300 document number 83622 rev. 1.5, 24-mar-05 vishay semiconductors www.vishay.com 9 the isolated amplifier provides the pwm control sig- nal which is derived from the output supply voltage. figure 16 more closely shows the basic function of the amplifier. the control amplifier consists of a voltage divider and a non-inverting unity gain stage. the tda4918 data sheet indicates that an input to the control amplifier is a high quality operational amplifier that typically requires a +3.0 v signal. given this information, the amplifier circuit topology shown in figure 18 is selected. the power supply voltage is scaled by r1 and r2 so that there is + 3.0 v at the non-inverting input (va) of u1. this voltage is offset by the voltage developed by photocurrent flowing through r3. this photocurrent is developed by the optical flux created by current flowing through the led. thus as the scaled monitor voltage (va) varies it will cause a change in the led current necessary to satisfy the dif- ferential voltage needed across r3 at the inverting input. the first step in the design procedure is to select the value of r3 given the led quiescent current (ifq) and the servo gain (k1). for this design, i fq = 12 ma. fig- ure 4 shows the servo photocurrent at i fq is found to be 100 a. with this data r3 can be calculated. for best input offset compensation at u1, r2 will equal r3. the value of r1 can easily be calculated from the following. the value of r5 depends upon the il300 transfer gain (k3). k3 is targeted to be a unit gain device, however to minimize the part to part transfer gain variation, infineon offers k3 graded into 5 % bins. r5 can determined using the following equation, or if a unity gain amplifier is being designed (vmon- itor = vout, r1 = 0), the equation simplifies to: figure 16. isolated control amplifier r3 = v b i pi = 3v 100 ? 17164 iil300_16 + - voltage monitor r1 r2 to control input iso amp +1 r1=r2 ( v monitor v a - 1 ) 17165 r5 = v out v monitor ? r3(r1 + r2) r2k3 17166 r5 = r3 k3 17190
www.vishay.com 10 document number 83622 rev. 1.5, 24-mar-05 vishay il300 vishay semiconductors table 1. gives the value of r5 given the production k3 bins. r5 selection table 1. figure 17. switching mode power supply figure 18. dc coupled power supply feedback amplifier iil300_17 switch xformer switch mode regulator tda4918 isolated feedback control 110/ 220 main dc output ac/dc rectifier ac/dc rectifier iil300_18 8 7 6 5 100 pf 4 3 1 2 8 6 7 k1 v cc v cc 1 2 3 4 k2 v cc v monitor r1 20 k w r2 30 k w r3 30 k w r4 100 w v out to control input r5 30 k w il300 vb va + - u1 lm201 bin min. ma. 3 t p. r5reitor k ? 1% k ? a 0.560 0.623 0.59 50.85 51.1 b 0.623 0.693 0.66 45.45 45.3 c 0.693 0.769 0.73 41.1 41.2 d 0.769 0.855 0.81 37.04 37.4 e 0.855 0.950 0.93 32.26 32.4 f 0.950 1.056 1.00 30.00 30.0 g 1.056 1.175 1.11 27.03 27.0 h 1.175 1.304 1.24 24.19 24.0 i 1.304 1.449 1.37 21.90 22.0 j 1.449 1.610 1.53 19.61 19.4
vishay il300 document number 83622 rev. 1.5, 24-mar-05 vishay semiconductors www.vishay.com 11 the last step in the design is selecting the led cur- rent limiting resistor (r4). the output of the opera- tional amplifier is targeted to be 50 % of the v cc , or 2.5 v. with an led quiescent current of 12 ma the typical led (v f ) is 1.3 v. given this and the opera- tional output voltage, r4 can be calculated. the circuit was constructed with an lm201 differential operational amplifier using the resistors selected. the amplifier was compensated with a 100 pf capacitor connected between pins 1 and 8. the dc transfer characteristics are shown in figure 19. the amplifier was designed to have a gain of 0.6 and was measured to be 0.6036. greater accuracy can be achieved by adding a balancing circuit, and potentiometer in the input divider, or at r5. the circuit shows exceptionally good gain linearity with an rms error of only 0.0133 % over the input voltage range of 4.0 v - 6.0 v in a servo mode; see figure 20. the ac characteristics are also quite impressive offering a - 3.0 db bandwidth of 100 khz, with a -45 phase shift at 80 khz as shown in figure 21. the same procedure can be used to design isolation amplifiers that accept bipolar signals referenced to ground. these amplifiers circuit configurations are shown in figure 22. in order for the amplifier to respond to a signal that swings above and below ground, the led must be pre biased from a separate source by using a voltage reference source (v ref1 ). in these designs, r3 can be determined by the following equation. figure 19. transfer gain v opamp -v f i fq = 2.5 v - 1.3 v 12 ma = 100 ? r4 = 17096 iil300_19 6.0 5.5 5.0 4.5 4.0 2.25 2.50 2.75 3.00 3.25 3.50 3.75 vout - output voltage - v vout = 14.4 mv + 0.6036 x vin lm 201 ta = 25c figure 20. linearity error vs. input voltage figure 21. amplitude and phase power supply control iil300_20 6.0 5.5 5.0 4.5 4.0 -0.015 -0.010 -0.005 0.000 0.005 0.010 0.015 0.020 0.025 vin - input voltage - v linearity error - % lm201 iil300_21 db phase phase response - 10 3 10 4 10 5 10 6 2 0 -2 -4 -6 -8 45 0 -45 -90 -135 -180 f - frequency - hz amplitude response - db r3 = v ref1 i p1 = v ref1 k1i fq 17098
www.vishay.com 12 document number 83622 rev. 1.5, 24-mar-05 vishay il300 vishay semiconductors table 2. optolinear amplifiers these amplifiers provide either an inverting or non- inverting transfer gain based upon the type of input and output amplifier. table 2 shows the various con- figurations along with the specific transfer gain equa- tions. the offset column refers to the calculation of the output offset or v ref2 necessary to provide a zero volt- age output for a zero voltage input. the non-inverting input amplifier requires the use of a bipolar supply, while the inverting input stage can be implemented with single supply operational amplifiers that permit operation close to ground. figure 22. non-inverting and inverting amplifiers iil300_22 vcc 20pf 4 1 2 3 4 8 7 6 5 +vref2 r5 r6 7 2 4 3 vo r4 r3 Cvref1 vin r1 r2 3 7 6 + +vcc 100 ? 6 il 300 2 Cvcc Cvcc vcc Cvcc + vcc vcc 20pf 4 1 2 3 4 8 7 6 5 +vref2 7 2 4 3 vout r4 r3 +vref1 vin r1 r2 3 7 6 + +vcc 100 ? 6 2 vcc vcc Cvcc + vcc C C non-inverting input non-inverting output inverting input inverting output il 300 C C Cvcc amplifier input output gain offset non-inverting inverting inverting inverting inverting inverting non-inverting non-inverting non-inverting non-inverting v out v in = k3 r4 r2 r3 (r1 + r2) v out v in = k3 r4 r2 (r5 + r6) r3 r5 (r1 + r2) v out v in = -k3r4r2(r5+r6) r3 r5 (r1 + r2) v out v in = k3 r4 r2 r3 (r1 + r2) - v ref2 = v ref1 r4 k3 r3 v ref2 = -v ref1 r3 r6 r4 (r5 + r6) k3 v ref2 = v ref1 r3 r6 r4 (r5 + r6) k3 v ref2 = -v ref1 r4 k3 r3 17189
vishay il300 document number 83622 rev. 1.5, 24-mar-05 vishay semiconductors www.vishay.com 13 for best results, place a buffer transistor between the led and output of the operational amplifier when a cmos opamp is used or the led i fq drive is targeted to operate beyond 15 ma. finally the bandwidth is influenced by the magnitude of the closed loop gain of the input and output amplifiers. best bandwidths result when the amplifier gain is designed for unity. package dimensions in inches (mm) i178010 iso method a pin 1 id. .240 (6.096) .260 (6.604) 3 4 .380 (9.652) .400 (10.16) 10 .300 typ. (7.62) typ. .021 (0.527) .035 (0.889) 1 2 .280 (7.112) .330 (8.382) .01 6 (.40 6 ) .02 0 ( .5 08 ) .130 (3.302) .150 (3.810) .040 (1.016) .050 (1.270 ) .100 (2.540) 4 .010 (0.254) ref. .050 (1.270) 3 9 .110 (2.794) .130 (3.302) .010 (0.254) ref. 6 5 8 7 .020 (0.508) ref. .008 (0.203) .012 (0.305) min. .315 (8.00) .020 (.51) .040 (1.02) .300 (7.62) ref. .375 (9.53) .395 (10.03) .012 (.30) typ. .0040 (.102) .0098 (.249) 15 max. option 9 .014 (0.35) .010 (0.25) .400 (10.16) .430 (10.92) .307 (7.8) .291 (7.4) .407 (10.36) .391 (9.96) option 6 .315 (8.0) min. .300 (7.62) typ . .180 (4.6) .160 (4.1) .331 (8.4) min. .406 (10.3) max. .028 (0.7) min. option 7 18450
www.vishay.com 14 document number 83622 rev. 1.5, 24-mar-05 vishay il300 vishay semiconductors ozone depleting substances policy statement it is the policy of vishay semiconductor gmbh to 1. meet all present and future national and international statutory requirements. 2. regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. it is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances (odss). the montreal protocol (1987) and its london amendments (1990) intend to severely restrict the use of odss and forbid their use within the next ten years. various national and international initiatives are pressing for an earlier ban on these substances. vishay semiconductor gmbh has been able to use its policy of continuous improvements to eliminate the use of odss listed in the following documents. 1. annex a, b and list of transitional substances of the montreal protocol and the london amendments respectively 2. class i and ii ozone depleting substances in the clean air act amendments of 1990 by the environmental protection agency (epa) in the usa 3. council decision 88/540/eec and 91/690/eec annex a, b and c (transitional substances) respectively. vishay semiconductor gmbh can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. we reserve the right to make changes to improve technical design and may do so without further notice. parameters can vary in different applications. all operating parameters must be validated for each customer application by the customer. should the buyer use vishay semiconductors products for any unintended or unauthorized application, the buyer shall indemnify vishay semiconductors against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. vishay semiconductor gmbh, p.o.b. 3535, d-74025 heilbronn, germany
document number: 91000 www.vishay.com revision: 18-jul-08 1 disclaimer legal disclaimer notice vishay all product specifications and data are subject to change without notice. vishay intertechnology, inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, ?vishay?), disclaim any and all liability fo r any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. vishay disclaims any and all li ability arising out of the use or application of any product describ ed herein or of any information provided herein to the maximum extent permit ted by law. the product specifications do not expand or otherwise modify vishay?s terms and conditions of purcha se, including but not limited to the warranty expressed therein, which apply to these products. no license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of vishay. the products shown herein are not designed for use in medi cal, life-saving, or life-sustaining applications unless otherwise expressly indicated. customers using or selling vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify vishay for any damages arising or resulting from such use or sale. please contact authorized vishay personnel to obtain written terms and conditions regarding products designed for such applications. product names and markings noted herein may be trademarks of their respective owners.

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