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dvtr2800s series ds1x007m 11314 4th avenue west, suite 206 everett, wa 98204 http://www.vpt-inc.com sales information: phone: (425) 353-3010 fax: (425) 353-4030 e-mail: vptsales@vpt-inc.com 1 high reliability hybrid dc-dc converters description the dvtr series of high reliability dc-dc converters is operable over the full military (-55 c to +125 c) temperature range with no power derating. unique to the dvtr series are robust and effective input and output filters which provide dramatically reduced input and output noise performance when compared to other manufacturers competing devices. operating at a nominal fixed frequency of 475 khz, these regulated, isolated units utilize a high speed magnetic feedback design and well controlled undervoltage lockout circuitry to eliminate slow start- up problems. these converters are designed and manufactured in a facility qualified to iso9001 and certified to mil- prf-38534 and mil-std-883. this product may incorporate one or more of the following u.s. patents: 5,784,266 5,790,389 5,963,438 5,999,433 6,005,780 6,084,792 6,118,673 features ? high reliability ? very low output noise ? wide input voltage range: 15 to 50 volts per mil-std-704 ? up to 40 watts output power ? fault tolerant magnetic feedback circuit ? output voltage trim up +10% ? no use of optoisolators ? undervoltage lockout ? indefinite short circuit protection ? current limit protection ? industry standard pinout ? high input transient voltage: 80 volts for 1 sec per mil-std-704a ? precision seam seal or solder seal hermetic package ? high power density: > 40 w/in 3 ? custom versions available ? additional environmental screening available ? meets mil-std-461c and mil-std-461d emc requirements when used with a dvmc28 emi filter ? flanged and non-flanged versions available. ? mil-prf-38534 element evaluated components ? space applications should consider vpt?s ?s? series of radiation tolerant power conversion devices. contact vpt for details. figure 1 ? dvtr2800s / dvtr2800sf dc-dc converter ( exact marking may differ from that shown )
dvtr2800s series ds1x007m 2 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc junction temperature rise to case +15c input voltage (transient, 1 second) 80 vo lts storage temperature -65c to +150c output power 1 40 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 13 watts weight (maximum) (un-flanged / flanged) (52 / 55) grams dvtr282r5s dvtr283r3s parameter conditions min typ max min typ max units static continuous 15 28 50 15 28 50 v input voltage 4 transient, 1 sec - - 80 - - 80 v inhibited - 4 6 - 4 6 ma current no load - 50 90 - 50 90 ma ripple current full load, 20hz to 10mhz - 15 50 - 20 50 ma p-p inhibit pin input 4 0 - 1.5 0 - 1.5 v inhibit pin open circuit voltage 4 9.0 11.0 13.0 9.0 11.0 13.0 v uvlo turn on 12.0 - 14.8 12.0 - 14.8 v uvlo turn off 4 11.0 - 14.5 11.0 - 14.5 v v out t case = 25c 2.47 2.5 2.53 3.25 3.3 3.35 v output voltage v out t case = -55c to +125c 2.46 2.5 2.54 3.2 3.3 3.4 v power 3 0 - 15 0 - 20 w current 3 v out 0 - 6.0 0 - 6.06 a ripple voltage v out full load, 20hz to 10mhz - 20 50 - 25 50 mv p-p line regulation v out v in = 15v to 50v - 2 20 - 2 20 mv load regulation v out no load to full load - 2 50 - 2 50 mv efficiency 63 66 - 65 70 - % overload - - 18 - - 16 w load fault power dissipation 4 short circuit - - 18 - - 16 w capacitive load 4 - - 1000 - - 1000 f switching frequency 400 475 550 400 475 550 khz sync frequency range v h - v l = 5v, dc = 20-80% 500 - 600 500 - 600 khz isolation 500 v dc 100 - - 100 - - m ? mtbf (mil-hdbk-217f) aif @ t c = 55c - 413 - - 413 - khrs dynamic load step output transient v out - 90 400 - 180 500 mv pk load step recovery 2 half load to full load - 280 500 - 260 500 sec line step output transient 4 v out - 300 450 - 300 600 mv pk line step recovery 2, 4 v in = 16v to 40v - 300 450 - 300 500 sec turn on delay v out - 10 20 - 10 20 msec turn on overshoot v in = 0v to 28v - 0 15 - 0 15 mv pk notes: 1. dependant on output voltage. 2. time for out put voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 135c. 4. verified by qualification testing.
dvtr2800s series ds1x007m 3 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc junction temperature rise to case +15c input voltage (transient, 1 second) 80 vo lts storage temperature -65c to +150c output power 1 40 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 13 watts weight (maximum) (un-flanged / flanged) (52 / 55) grams dvtr2805s dvtr285r2s parameter conditions min typ max min typ max units static continuous 15 28 50 15 28 50 v input voltage 4 transient, 1 sec - - 80 - - 80 v inhibited - 4 6 - 4 6 ma current no load - 55 90 - 55 90 ma ripple current full load, 20hz to 10mhz - 30 50 - 30 50 ma p-p inhibit pin input 4 0 - 1.5 0 - 1.5 v inhibit pin open circuit voltage 4 9.0 11.0 13.0 9.0 11.0 13.0 v uvlo turn on 12.0 - 14.8 12.0 - 14.8 v uvlo turn off 4 11.0 - 14.5 11.0 - 14.5 v v out t case = 25c 4.95 5 5.05 5.14 5.2 5.26 v output voltage v out t case = -55c to +125c 4.875 5 5.125 5.07 5.2 5.33 v power 3 0 - 30 0 - 30 w current 3 v out 0 - 6 0 - 6 a ripple voltage v out full load, 20hz to 10mhz - 20 50 - 20 50 mv p-p line regulation v out v in = 15v to 50v - 2 20 - 2 20 mv load regulation v out no load to full load - 2 50 - 2 50 mv efficiency 72 78 - 72 78 - % overload - - 16 - - 16 w load fault power dissipation 4 short circuit - - 16 - - 16 w capacitive load 4 - - 1000 - - 1000 f switching frequency 400 475 550 400 475 550 khz sync frequency range v h - v l = 5v, dc = 20-80% 500 - 600 500 - 600 khz isolation 500 v dc 100 - - 100 - - m ? mtbf (mil-hdbk-217f) aif @ t c = 55c - 413 - - 413 - khrs dynamic load step output transient v out - 170 500 - 170 500 mv pk load step recovery 2 half load to full load - 60 500 - 60 500 sec line step output transient 4 v out - 300 600 - 300 600 mv pk line step recovery 2, 4 v in = 16v to 40v - 300 500 - 300 500 sec turn on delay v out - 10 20 - 10 20 msec turn on overshoot v in = 0v to 28v - 0 25 - 0 25 mv pk notes: 1. dependant on output voltage. 2. time for out put voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 135c. 4. verified by qualification testing.
dvtr2800s series ds1x007m 4 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc junction temperature rise to case +15c input voltage (transient, 1 second) 80 vo lts storage temperature -65c to +150c output power 1 40 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 13 watts weight (maximum) (un-flanged / flanged) (52 / 55) grams dvtr2807s dvtr2808s parameter conditions min typ max min typ max units static continuous 15 28 50 15 28 50 v input voltage 4 transient, 1 sec - - 80 - - 80 v inhibited - 4 6 - 4 6 ma current no load - 65 90 - 65 90 ma ripple current full load, 20hz to 10mhz - 30 50 - 30 50 ma p-p inhibit pin input 4 0 - 1.5 0 - 1.5 v inhibit pin open circuit voltage 4 9.0 11.0 13.0 9.0 11.0 13.0 v uvlo turn on 12.0 - 14.8 12.0 - 14.8 v uvlo turn off 4 11.0 - 14.5 11.0 - 14.5 v v out t case = 25c 6.93 7 7.07 7.92 8 8.08 v output voltage v out t case = -55c to +125c 6.895 7 7.105 7.88 8 8.12 v power 3 0 - 35 0 - 35 w current 3 v out 0 - 5 0 - 4.4 a ripple voltage v out full load, 20hz to 10mhz - 30 50 - 30 50 mv p-p line regulation v out v in = 15v to 50v - 2 20 - 2 20 mv load regulation v out no load to full load - 2 50 - 2 50 mv efficiency 73 77 - 73 78 - % overload - - 16 - - 16 w load fault power dissipation 4 short circuit - - 16 - - 16 w capacitive load 4 - - 1000 - - 1000 f switching frequency 400 475 550 400 475 550 khz sync frequency range v h - v l = 5v, dc = 20-80% 500 - 600 500 - 600 khz isolation 500 v dc 100 - - 100 - - m ? mtbf (mil-hdbk-217f) aif @ t c = 55c - 413 - - 413 - khrs dynamic load step output transient v out - 300 600 - 300 600 mv pk load step recovery 2 half load to full load - 250 500 - 250 500 sec line step output transient 4 v out - 400 700 - 400 700 mv pk line step recovery 2, 4 v in = 16v to 40v - 300 500 - 300 500 sec turn on delay v out - 10 20 - 10 20 msec turn on overshoot v in = 0v to 28v - 0 25 - 0 25 mv pk notes: 1. dependant on output voltage. 2. time for out put voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 135c. 4. verified by qualification testing.
dvtr2800s series ds1x007m 5 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc junction temperature rise to case +15c input voltage (transient, 1 second) 80 vo lts storage temperature -65c to +150c output power 1 40 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 13 watts weight (maximum) (un-flanged / flanged) (52 / 55) grams dvtr2812s dvtr2815s parameter conditions min typ max min typ max units static continuous 15 28 50 15 28 50 v input voltage 4 transient, 1 sec - - 80 - - 80 v inhibited - 4 6 - 4 6 ma current no load - 60 90 - 60 90 ma ripple current full load, 20hz to 10mhz - 30 50 - 30 50 ma p-p inhibit pin input 4 0 - 1.5 0 - 1.5 v inhibit pin open circuit voltage 4 9.0 11.0 13.0 9.0 11.0 13.0 v uvlo turn on 12.0 - 14.8 12.0 - 14.8 v uvlo turn off 4 11.0 - 14.5 11.0 - 14.5 v v out t case = 25c 11.88 12 12.12 14.85 15 15.15 v output voltage v out t case = -55c to +125c 11.7 12 12.3 14.625 15 15.375 v power 3 0 - 40 0 - 40 w current 3 v out 0 - 3.33 0 - 2.67 a ripple voltage v out full load, 20hz to 10mhz - 20 50 - 20 50 mv p-p line regulation v out v in = 15v to 50v - 2 20 - 2 20 mv load regulation v out no load to full load - 10 50 - 10 50 mv efficiency 76 84 - 77 84 - % overload - - 14 - - 14 w load fault power dissipation 4 short circuit - - 14 - - 14 w capacitive load 4 - - 500 - - 500 f switching frequency 400 475 550 400 475 550 khz sync frequency range v h - v l = 5v, dc = 20-80% 500 - 600 500 - 600 khz isolation 500 v dc 100 - - 100 - - m ? mtbf (mil-hdbk-217f) aif @ t c = 55c - 413 - - 413 - khrs dynamic load step output transient v out - 450 700 - 500 700 mv pk load step recovery 2 half load to full load - 200 500 - 150 500 sec line step output transient 4 v out - 500 900 - 500 900 mv pk line step recovery 2, 4 v in = 16v to 40v - 300 500 - 300 500 sec turn on delay v out - 10 20 - 10 20 msec turn on overshoot v in = 0v to 28v - 0 50 - 0 50 mv pk notes: 1. dependant on output voltage. 2. time for out put voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 135c. 4. verified by qualification testing.
dvtr2800s series ds1x007m 6 specifications (t case = -55c to +125c, v in = +28v 5%, full load, unless otherwise specified) absolute maximum ratings input voltage (continuous) 50 v dc junction temperature rise to case +15c input voltage (transient, 1 second) 80 vo lts storage temperature -65c to +150c output power 1 40 watts lead solder temperature (10 seconds) 270c power dissipation (full load, t case = +125c) 13 watts weight (maximum) (un-flanged / flanged) (52 / 55) grams dvtr2818s dvtr2828s parameter conditions min typ max min typ max units static continuous 15 28 50 15 28 50 v input voltage 4 transient, 1 sec - - 80 - - 80 v inhibited - 4 6 - 4 6 ma current no load - 60 90 - 60 90 ma ripple current full load, 20hz to 10mhz - 30 50 - 30 50 ma p-p inhibit pin input 4 0 - 1.5 0 - 1.5 v inhibit pin open circuit voltage 4 9.0 11.0 13.0 9.0 11.0 13.0 v uvlo turn on 12.0 - 14.8 12.0 - 14.8 v uvlo turn off 4 11.0 - 14.5 11.0 - 14.5 v v out t case = 25c 17.82 18 18.18 27.72 28 28.28 v output voltage v out t case = -55c to +125c 17.55 18 18.45 27.30 28 28.70 v power 3 0 - 40 0 - 40 w current 3 v out 0 - 2.22 0 - 1.43 a ripple voltage v out full load, 20hz to 10mhz - 20 50 - 30 150 mv p-p line regulation v out v in = 15v to 50v - 2 20 - 2 150 mv load regulation v out no load to full load - 10 50 - 20 150 mv efficiency 75 84 - 79 85 - % overload - - 14 - - 14 w load fault power dissipation 4 short circuit - - 14 - - 14 w capacitive load 4 - - 500 - - 500 f switching frequency 400 475 550 400 450 550 khz sync frequency range v h - v l = 5v, dc = 20-80% 500 - 600 500 - 600 khz isolation 500 v dc 100 - - 100 - - m ? mtbf (mil-hdbk-217f) aif @ t c = 55c - 413 - - 413 - khrs dynamic load step output transient v out - 500 700 - 500 1000 mv pk load step recovery 2 half load to full load - 200 500 - 250 500 sec line step output transient 4 v out - 500 900 - 500 1800 mv pk line step recovery 2, 4 v in = 16v to 40v - 300 500 - 300 500 sec turn on delay v out - 10 20 - 10 20 msec turn on overshoot v in = 0v to 28v - 0 50 - 0 50 mv pk notes: 1. dependant on output voltage. 2. time for out put voltage to settle within 1% of its nominal value. 3. derate linearly to 0 at 135c. 4. verified by qualification testing.
dvtr2800s series ds1x007m 7 block diagram under voltage s h u td o wn primary housekeeping su ppl y pwm control voltage and current amplifier s secondary housekeeping su ppl y pin 1 28v in pin 10 in com l1 c1 q1 rs1 t1 d1 c2 rs2 +v out pin 5 pin 4 out com inh pin 2 feedback magnetic sync pin 9 -s pin 3 +s pin 6 figure 2 connection diagram 10 in com 2 inh 1 28v in 5 +v out 4 out com load + - 28 vdc -s 3 +s 6 sync 9 figure 3
dvtr2800s series ds1x007m 8 inhibit drive connection diagrams 10 in com 2 inh 1 28v in optional capacitor bias 12v 10k 10 in com 2 inh 1 28v in optional capacitor bias 12v 10k optoisolator figure 4 ? internal inhibit circuit and recommended drive figure 5 ? isolated inhibit drive (shown with optional capacitor for turn-on delay) (shown with optional capacitor for turn-on delay) emi filter hookup diagram 10 in com 2 inh 1 28v in 5 +v out 4 out com load + - 28 vdc 2 28v out 4 out com 1 28v in 5 in com case -s 3 +s 6 7, 8 sync 9 3 dvmc28 emi filter dvtr2800s dc-dc converter figure 6 ? converter with emi filter
dvtr2800s series ds1x007m 9 output voltage trim + - + - 2.5v ri 100 10k 100 +v out pin 5 +s pin 6 -s pin 3 out com pin 4 (trim up) r-trim the output voltage can be trimmed up by connecting a resistor between the +s pin (pin 6) and the out com pin (pin 4). the maximum trim range is +10%. the appropriate resistor values versus the output voltage are given in the trim table below. the ?s pin should be connected to the out com pin.
dvtr2800s series ds1x007m 10 figure 7 ? output voltage trim dvtr282r5s dvtr283r3s dvtr2805s dvtr285r2s +v out (v) r trim ( ? ) +v out (v) r trim ( ? ) +v out (v) r trim ( ? ) +v out (v) r trim ( ? ) 2.75 1.05k 3.60 1.13k 5.50 1.05k 5.70 1.09k 2.70 1.33k 3.55 1.36k 5.45 1.18k 5.65 1.22k 2.65 1.82k 3.50 1.72k 5.40 1.33k 5.60 1.39k 2.60 2.86k 3.45 2.32k 5.35 1.54k 5.55 1.60k 2.55 6.67k 3.40 3.59k 5.30 1.82k 5.50 1.89k 2.50 - 3.35 7.87k 5. 25 2.22k 5.45 2.31k 3.30 - 5.20 2. 86k 5.40 2.97k 5.15 4k 5.35 4.16k 5.10 6.67k 5.30 6.93k 5.05 20k 5.25 20.8k 5.00 - 5.20 - dvtr2812s dvtr281 5s dvtr2818s +v out (v) r trim ( ? ) +v out (v) r trim ( ? ) +v out (v) r trim ( ? ) 13.2 1.09k 16.50 1.09k 19.8 0.99k 13.1 1.19k 16.40 1.18k 19.6 1.12k 13.0 1.33k 16.30 1.28k 19.4 1.28k 12.9 1.49k 16.20 1.4k 19.2 1.49k 12.8 1.7k 16.10 1.54k 19 1.79k 12.7 1.98k 16.00 1.71k 18.8 2.23k 12.6 2.38k 15.90 1.94k 18.6 2.98k 12.5 2.96k 15.80 2.22k 18.4 4.47k 12.4 3.94k 15.70 2.61k 18.2 8.94k 12.3 5.86k 15.60 3.16k 18 - 12.2 11.4k 15.50 4k 12.1 242k 15.40 5.46k 12.0 - 15.30 8.57k 15.20 20k 15.10 note 1 15.00 - notes: 1. connect r-trim = 400 from +vout (pin 5) to +s (pin 6).
dvtr2800s series ds1x007m 11 efficiency performance curves (t case = 25c, full load, unless otherwise specified) v in = 16v v in = 28v v in = 40v 20 25 30 35 40 45 50 55 60 65 70 051015 output pow er (w) efficiency (%) 45 50 55 60 65 70 75 0 5 10 15 20 output pow er (w) efficiency (%) 50 55 60 65 70 75 80 0 5 10 15 20 25 30 output pow er (w) efficiency (%) figure 8 ? dvtr282r5s figure 9 ? dvtr283r3s figure 10 ? dvtr2805s / dvtr285r2s efficiency (%) vs. output power (w) efficiency (%) vs. output power (w) efficiency (%) vs. output power (w) 60 65 70 75 80 85 0 10203040 output pow er (w) efficiency (%) 60 65 70 75 80 85 0 10203040 output pow er (w) efficiency (%) figure 11 ? dvtr2812s figure 12 ? dvtr2815s efficiency (%) vs. output power (w) efficiency (%) vs. output power (w)
dvtr2800s series ds1x007m 12 emi performance curves (t case = 25c, v in = +28v 5%, full load, unless otherwise specified) figure 13 ? dvtr2800s without emi filter figure 14 ? dvtr2800s with emi filter
dvtr2800s series ds1x007m 13 package specifications (non -flanged, solder seal) pin function pin function 1 28v in 6 +s 2 inhibit 7 case 3 -s 8 case 4 out com 9 sync 5 +v out 10 in com figure 15 ? non-flanged, solder seal package and pinout (not used for /hb or higher screened products)
dvtr2800s series ds1x007m 14 package specifications (non-flanged, seam seal) pin function pin function 1 28v in 6 +s 2 inhibit 7 case 3 -s 8 case 4 out com 9 sync 5 +v out 10 in com figure 16 ? non-flanged, seam seal package and pinout
dvtr2800s series ds1x007m 15 package specifications ( flanged, solder seal) pin function pin function 1 28v in 6 +s 2 inhibit 7 case 3 -s 8 case 4 out com 9 sync 5 +v out 10 in com figure 17 ? flanged, solder seal package and pinout (n ot used for /hb or higher screened products)
dvtr2800s series ds1x007m 16 package specifications (flanged, seam seal) pin function pin function 1 28v in 6 +s 2 inhibit 7 case 3 -s 8 case 4 out com 9 sync 5 +v out 10 in com figure 18 ? flanged, seam seal package and pinout
dvtr2800s series ds1x007m 17 package pin description pin function description 1 28v in positive input voltage connection 2 inhibit logic low = disabled output. connecting the inhibit pin to input common causes converter shutdown. logic high = enabled output. unconnected or open collector ttl. 3 -s return sense 4 out com output common connection 5 +v out positive output voltage connection 6 +s positive sense 7 case case connection 8 case case connection 9 sync synchronization signal 10 in com input common connection
dvtr2800s series ds1x007m 18 environmental screening (100% tested per mil-std-883 as referenced to mil-prf-38534) notes: 1. 100% r&r testing at ?55c, +25c, and +125 c with all test data included in product shipment. 2. pind test certificate of co mpliance included in product shipment. 3. radiographic test cert ificate of compliance and film(s) included in product shipment. screening mil-std-883 standard (no suffix) extended /es hb /hb class h /h class k /k non- destructive bond pull method 2023 ? ? ? ? ? internal visual method 2017, 2032 internal procedure ? ? ? ? ? temperature cycling method 1010, condition c method 1010, -55c to 125c ? ? ? ? constant acceleration method 2001, 3000g, y1 direction method 2001, 500g, y1 direction ? ? ? ? pind method 2020, condition a 2 ? pre burn-in electrical 100% at 25c ? burn-in method 1015, 320 hours at +125c method 1015, 160 hours at +125c 96 hours at +125c 24 hours at +125c ? ? ? ? ? final electrical mil-prf-38534, group a 1 100% at 25c ? ? ? ? ? hermeticity method 1014, fine leak, condition a method 1014, gross leak, condition c dip (1 x 10 -3 ) ? ? ? ? ? ? ? ? ? radiography method 2012 3 ? external visual method 2009 ? ? ? ? ?
dvtr2800s series ds1x007m 19 ordering information dvtr 28 05 s f /hb - xxx 1 2 3 4 5 6 7 (1) (2) (3) (4) product series nominal input voltage output voltage number of outputs dvtr 28 28 volts 2r5 3r3 05 5r2 07 08 12 15 18 28 2.5 volts 3.3 volts 5 volts 5.2 volts 7 volts 8 volts 12 volts 15 volts 18 volts 28 volts s single (5) (6) (7) package option screening code 1,2 additional screening code none f non-flanged flanged none /es /hb /h /k standard extended hb class h class k contact sales notes: 1. contact the vpt inc. sales department for availability of class h (/h) or class k (/k) qualified products. 2. vpt inc. reserves the right to ship higher screen ed or smd products to meet lower screened orders at our sole discretion unless specifically forbidden by customer contract. please contact your sales representative or the vpt inc. sales department for more information concerning additional environmental screening and testing, different input voltage, output voltage, power requirement, source inspection, and/or special element evaluation for space or other higher quality applications.
dvtr2800s series ds1x007m 20 smd (standard microci rcuit drawing) numbers standard microcircuit drawing (smd) dvtr2800s series similar part number *t.b.d. dvtr282r5s/h dvtr282r5sf/h *t.b.d. dvtr283r3s/h dvtr283r3sf/h *t.b.d. dvtr2805s/h dvtr2805sf/h *t.b.d. dvtr285r2s/h dvtr285r2sf/h *t.b.d. dvtr2807s/h dvtr2807sf/h *t.b.d. dvtr2808s/h dvtr2808sf/h *t.b.d. dvtr2812s/h dvtr2812sf/h *t.b.d. dvtr2815s/h dvtr2815sf/h *t.b.d. dvtr2818s/h dvtr2818sf/h *t.b.d. dvtr2828s/h dvtr2828sf/h do not use the dvtr2800s series similar part number for smd product acquisition. it is listed for reference only. for exact specifications for the smd product, refer to the smd drawing. smd?s can be downloaded from the dscc website at http://www.dscc.dla.mil/programs/smcr/ . the smd number listed above is for mil-prf-38534 class h screening, standard gold plated lead finish, and no rha (radiation hardness assurance) level. please reference the smd for other screening levels, lead finishes, and radiation levels. all smd products are marked with a ?q? on the cover as specified by the qml certification mark requirement of mil-prf-38534.
dvtr2800s series ds1x007m 21 contact information to request a quotation or place orders please contact your sales representative or the vpt inc. sales department at: phone : (425) 353-3010 fax : (425) 353-4030 e-mail : vptsales@vpt-inc.com all information contained in this datasheet is believed to be accurate, however, no responsibility is assumed for possible erro rs or omissions. the products or specifications cont ained herein are subject to change without notice.

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