? semiconductor components industries, llc, 1999 december, 1999 rev. 2 1 publication order number: 1.5smc6.8at3/d
general data is applicable to all series in this group the smc series is designed to protect voltage sensitive components from high voltage, high energy transients. they have excellent clamping capability, high surge capability, low zener impedance and fast response time. the smc series is supplied in on semiconductor's exclusive, cost-effective, highly reliable surmetic package and is ideally suited for use in communication systems, numerical controls, process controls, medical equipment, business machines, power supplies and many other industrial/consumer applications. specification features: ? standard zener breakdown voltage range e 6.8 to 91 v ? standoff voltage range e 5.8 to 78 v ? peak power e 1500 watts @ 1 ms ? maximum clamp voltage @ peak pulse current ? low leakage < 5 m a above 10 v ? ul recognition ? maximum temperature coefficient specified ? available in tape and reel ? response time is typically < 1 ns mechanical characteristics: case: void-free, transfer-molded, thermosetting plastic finish: all external surfaces are corrosion resistant and leads are readily solderable polarity: cathode indicated by molded polarity notch. when operated in zener mode, will be positive with respect to anode mounting position: any leads: modified lbend providing more contact area to bond pads maximum case temperature for soldering purposes: 260 c for 10 seconds wafer fab location: phoenix, arizona assembly/test location: seremban, malaysia maximum ratings rating symbol value unit peak power dissipation (1) @ t l 25 c p pk 1500 watts forward surge current (2) @ t a = 25 c i fsm 200 amps thermal resistance from junction to lead (typical) r jl 15 c/w operating and storage temperature range t j , t stg 55 to +150 c notes: 1. nonrepetitive current pulse per figure 2 and derated above t a = 25 c per figure 3. notes: 2. 1/2 sine wave (or equivalent square wave), pw = 8.3 ms, duty cycle = 4 pulses per minute maximum. plastic surface mount zener overvoltage transient suppressors 5.878 volts 1500 watt peak power devices listed in bold, italic are on semiconductor preferred devices. preferred devices are recommended choices for future use and best overall value. device package shipping ordering information 1.5smcxxxat3 smc tape and reel 2500 units/reel smc plastic case 403 http://onsemi.com
1.5smcxxxat3 series http://onsemi.com 2 electrical characteristics (t a = 25 c unless otherwise noted) v f = 3.5 v max, i f ** = 100 a for all types. breakdown voltage* working peak maximum reverse maximum reverse maximum reverse voltage maximum v br @ i t volts reverse voltage v rwm leakage @ v rwm i r surge current i rsm @ i rsm (clamping voltage) v rsm temperature coefficient of v br device device min nom max ma v rwm volts i r m a i rsm amps v rsm volts of v br %/ c device marking 1.5smc6.8at3 1.5smc7.5at3 1.5smc8.2at3 1.5smc9.1at3 6.45 7.13 7.79 8.65 6.8 7.5 8.2 9.1 7.14 7.88 8.61 9.55 10 10 10 1 5.8 6.4 7.02 7.78 1000 500 200 50 143 132 124 112 10.5 11.3 12.1 13.4 0.057 0.061 0.065 0.068 6v8a 7v5a 8v2a 9v1a 1.5smc10at3 1.5smc11at3 1.5smc12at3 1.5smc13at3 9.5 10.5 11.4 12.4 10 11 12 13 10.5 11.6 12.6 13.7 1 1 1 1 8.55 9.4 10.2 11.1 10 5 5 5 103 96 90 82 14.5 15.6 16.7 18.2 0.073 0.075 0.078 0.081 10a 11a 12a 13a 1.5smc15at3 1.5smc16at3 1.5smc18at3 1.5smc20at3 14.3 15.2 17.1 19 15 16 18 20 15.8 16.8 18.9 21 1 1 1 1 12.8 13.6 15.3 17.1 5 5 5 5 71 67 59.5 54 21.2 22.5 25.2 27.7 0.084 0.086 0.088 0.09 15a 16a 18a 20a 1.5smc22at3 1.5smc24at3 1.5smc27at3 1.5smc30at3 20.9 22.8 25.7 28.5 22 24 27 30 23.1 25.2 28.4 31.5 1 1 1 1 18.8 20.5 23.1 25.6 5 5 5 5 49 45 40 36 30.6 33.2 37.5 41.4 0.092 0.094 0.096 0.097 22a 24a 27a 30a 1.5smc33at3 1.5smc36at3 1.5smc39at3 1.5smc43at3 31.4 34.2 37.1 40.9 33 36 39 43 34.7 37.8 41 45.2 1 1 1 1 28.2 30.8 33.3 36.8 5 5 5 5 33 30 28 25.3 45.7 49.9 53.9 59.3 0.098 0.099 0.1 0.101 33a 36a 39a 43a 1.5smc47at3 1.5smc51at3 1.5smc56at3 1.5smc62at3 44.7 48.5 53.2 58.9 47 51 56 62 49.4 53.6 58.8 65.1 1 1 1 1 40.2 43.6 47.8 53 5 5 5 5 23.2 21.4 19.5 17.7 64.8 70.1 77 85 0.101 0.102 0.103 0.104 47a 51a 56a 62a 1.5smc68at3 1.5smc75at3 1.5smc82at3 1.5smc91at3 64.6 71.3 77.9 86.5 68 75 82 91 71.4 78.8 86.1 95.5 1 1 1 1 58.1 64.1 70.1 77.8 5 5 5 5 16.3 14.6 13.3 12 92 103 113 125 0.104 0.105 0.105 0.106 68a 75a 82a 91a devices listed in bold, italic are on semiconductor preferred devices. * * v br measured at pulse test current i t at an ambient temperaure of 25 c. * * 1/2 sine wave (or equivalent square wave), pw = 8.3 ms, duty cycle = 4 pulses per minute maximum. surge current waveform per figure 2 and derate per figure 3 of general data e 1500 watt at the beginning of this group. t3 suffix designates tape and reel of 2500 units.
1.5smcxxxat3 series http://onsemi.com 3 p , peak power (kw) p nonrepetitive pulse waveform shown in figure 2 t p , pulse width 1 10 100 0.1 m s1 m s10 m s 100 m s 1 ms 10 ms figure 1. pulse rating curve 01234 0 50 100 t, time (ms) value (%) half value i rsm 2 peak value i rsm t r t r 10 m s figure 2. pulse waveform figure 3. pulse derating curve peak pulse derating in % of peak power or current @ t a = 25 c 100 80 60 40 20 0 0 25 50 75 100 125 150 t a , ambient temperature ( c) 120 140 160 t p pulse width (t p ) is defined as that point where the peak current decays to 50% of i rsm . d v z , instantaneous increase in v z above v z (nom) (volts) 0.3 0.5 0.7 1 2 3 5 7 10 20 30 i z , zener current (amps) 1000 500 200 100 50 1 2 5 10 20 t l =25 c t p =10 m s v z (nom) = 6.8 to 13 v 20 v 24 v 43 v 75 v 120 v 180 v figure 4. dynamic impedance ul recognition the entire series has underwriters laboratory recognition for the classification of protectors (qvgv2) under the ul standard for safety 497b and file #116110. many competitors only have one or two devices recognized or have recognition in a non-protective category. some competitors have no recognition at all. with the ul497b recognition, our parts successfully passed several tests including strike voltage breakdown test, endurance conditioning, temperature test, dielectric voltage-withstand test, discharge test and several more. whereas, some competitors have only passed a flammability test for the package material, we have been recognized for much more to be included in their protector category.
1.5smcxxxat3 series http://onsemi.com 4 application notes response time in most applications, the transient suppressor device is placed in parallel with the equipment or component to be protected. in this situation, there is a time delay associated with the capacitance of the device and an overshoot condition associated with the inductance of the device and the inductance of the connection method. the capacitive effect is of minor importance in the parallel protection scheme because it only produces a time delay in the transition from the operating voltage to the clamp voltage as shown in figure 5. the inductive effects in the device are due to actual turn-on time (time required for the device to go from zero current to full current) and lead inductance. this inductive effect produces an overshoot in the voltage across the equipment or component being protected as shown in figure 6. minimizing this overshoot is very important in the application, since the main purpose for adding a transient suppressor is to clamp voltage spikes. the smc series have a very good response time, typically < 1 ns and negligible inductance. however, external inductive effects could produce unacceptable overshoot. proper circuit layout, minimum lead lengths and placing the suppressor device as close as possible to the equipment or components to be protected will minimize this overshoot. some input impedance represented by z in is essential to prevent overstress of the protection device. this impedance should be as high as possible, without restricting the circuit operation. duty cycle derating the data of figure 1 applies for non-repetitive conditions and at a lead temperature of 25 c. if the duty cycle increases, the peak power must be reduced as indicated by the curves of figure 7. average power must be derated as the lead or ambient temperature rises above 25 c. the average power derating curve normally given on data sheets may be normalized and used for this purpose. at first glance the derating curves of figure 7 appear to be in error as the 10 ms pulse has a higher derating factor than the 10 m s pulse. however, when the derating factor for a given pulse of figure 7 is multiplied by the peak power value of figure 1 for the same pulse, the results follow the expected trend.
1.5smcxxxat3 series http://onsemi.com 5 v l v v in v in (transient) v l t d v v in (transient) overshoot due to inductive effects t d = time delay due to capacitive effect t t figure 5. figure 6. figure 7. typical derating factor for duty cycle derating factor 1 ms 10 m s 1 0.7 0.5 0.3 0.05 0.1 0.2 0.01 0.02 0.03 0.07 100 m s 0.1 0.2 0.5 2 5 10 50 1 20 100 d, duty cycle (%) pulse width 10 ms typical protection circuit v in v l z in load
1.5smcxxxat3 series http://onsemi.com 6 outline dimensions 1500 watt peak power transient voltage suppressors surface mounted case 403 (smc) (refer to section 10 of the tvs/zener data book (dl150/d) for surface mount, thermal data and footprint information.) smc footprint 0.171 4.343 0.110 2.794 0.150 3.810 mm inches a s b c d kp h notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. d dimension shall be measured within dimension p. min min max max inches millimeters dim a b c d h j k p s 6.60 5.59 1.90 2.92 0.051 0.15 0.76 7.75 7.11 6.10 2.41 3.07 0.152 0.30 1.27 8.13 0.260 0.220 0.075 0.115 0.0020 0.006 0.030 0.305 0.280 0.240 0.095 0.121 0.0060 0.012 0.050 0.320 0.51 ref 0.020 ref j
1.5smcxxxat3 series http://onsemi.com 7 notes
1.5smcxxxat3 series http://onsemi.com 8 on semiconductor and are trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to make changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. atypicalo parameters which may be provided in scill c data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including atypicalso must be validated for each customer application by customer's technical experts. scillc does not convey any license under its patent r ights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into t he body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. publication ordering information asia/pacific : ldc for on semiconductor asia support phone : 3036752121 (tuefri 9:00am to 1:00pm, hong kong time) toll free from hong kong 80044223781 email : onlitasia@hibbertco.com japan : on semiconductor, japan customer focus center 4321 nishigotanda, shinagawaku, tokyo, japan 1418549 phone : 81354878345 email : r14153@onsemi.com fax response line : 3036752167 8003443810 toll free usa/canada on semiconductor website: http://onsemi.com for additional information, please contact your local sales representative. 1n6267a/d north america literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 3036752175 or 8003443860 toll free usa/canada fax : 3036752176 or 8003443867 toll free usa/canada email : onlit@hibbertco.com n. american technical support : 8002829855 toll free usa/canada europe: ldc for on semiconductor european support german phone: (+1) 3033087140 (mf 2:30pm to 5:00pm munich time) email: onlitgerman@hibbertco.com french phone: (+1) 3033087141 (mf 2:30pm to 5:00pm toulouse time) email: onlitfrench@hibbertco.com english phone: (+1) 3033087142 (mf 1:30pm to 5:00pm uk time) email: onlit@hibbertco.com
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