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features ? input voltage range 16 to 50 volts ? t ransient protection up to 80 volts per mil-std-704a ? operating temperature -55c to +125c ? fully isolated, magnetic feedbac k ? fixed high frequency switching ? inhibit and synchronization function ? indefinite short circuit and overload protection d es c r ip t ion the interpoint ? mtr series? of dc-dc converters of fers up to 30 watts of output power from single or dual output configurations. mtr (50) models have a wide input voltage range of 16 to 50 volts. t ransient protection of up to 80 volts input meets the transient requirements of mil-std-704a. the converters opera te over the full military temperature range with up to 81% ef ficiency. mtr converters are packaged in hermetically sealed metal cases, making them ideal for use in military , aerospa ce and other high reliability applications. the converters are of fered with standard screening, es screening, or fully compliant to 883 mil-prf-38534 class h screening. see t able 9 on page 19 and t able 10 on page 20. standard microcircuit drawings (smd) are available refer to t able 3 on page 6. c over m arking the cover marking for the mtr 50 has mtr (50) dc-dc conver ter below the model number . refer to figure 8 on page 6. c onverter d esign the mtr converters are constant frequency , pulse-width mod ulated switching regulators which use a quasi-square wave, single ended, forward converter design. t ight load regulation is maintained via wide bandwidth magnetic feedback and, on single output models, through use of remote sense. on dual output models, the positive output is independently regulated and the negative output is cross regulated through the use of tightly coupled magnetics. indefinite short circuit protection and overload protection are provided by a constant current-limit feature. this protective system senses current in the converter s secondary stage and limits it to approximately 140% of the maximum rated output current. mtr converters are provided with internal filtering capacitors that help reduce the need for external components in normal operation. use our fmce-0328 ? , fmce-0528 ? or fmce- 0828 ? emi filter to meet the requirements of mil-std-461c ce03 and cs01 and/or mil-std-461d, e and f ce102 and cs101 levels of conducted emissions. models o utput v oltage (v) single dual 3.3 5 5 12 8.5 15 12 15 l egacy m tr (40): 16 - 40 v in, 50 v transient / 50 ms. datasheet at www .interpoint.com/mtr40 m tr (50) s ingle and dual dc-dc converters page 1 of 20 28 (16-50) v o lt inp ut C 30 watt mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions crane aerospace & electronics power solutions C interpoint products 10301 willows rd. ne, redmond, wa 98052 +1 425-882-3100 ? power@crane-eg.com www.craneae.com/interpoint
s ync hronization synchronizing the converter with the system clock allows the designer to confine switching noise to clock transitions, minimizing interference and reducing the need for filtering. in sync mode, the converter will run at any frequency between 500 khz and 675 khz. the sync control operates with a duty cycle between 40% and 60%. the sync pin must be connected to inpu t common pin when not in use. d ynamic r esponse the mtr series feed-forward compensation system provides excellent dynamic response and noise rejection. audio rejection is typically 40 db. the minimum to maximum step line transition response is typically less than 4%. i nhibit f unction mtr series converters provide an inhibit terminal that can be used to disable internal switching, resulting in no output voltage and very low quiescent input current. the converter is inhibited when the inhibit pin is pulled below 0.8 volts and enabled when its inhibit pin is left floating. an external inhibit interface should be capable of pulling the converter s inhibit pin below 0.8 volts while sinking the maximum inhibit current and also allowing the inhibit pin to float high to enable the converter . a voltage should not be applied to the inhibit pin. the open circuit voltage present on the inhibit pin is 9 to 1 1 volts f igure 1: mtr s ingle b lock d iagram output common positive output positive input inhibit input common input common input common sync in mtr single output input filter driver pwm case v bias r sense current limit voltage feedback m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 2 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
f igure 2: mtr d ual b lock d iagram input common input common mtr series dual output /883 input filter driver l2 a l2 b output common output common positive output negative output positive input inhibit sync input common case output common pwm v bias current limit voltage feedback m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 3 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
notes for remote sense and t rim 1. when trimming output voltage and/or remote sensing, the total output voltage increase must be less than 0.6 volts at the converters pins. do not exceed the maximum power . 2. if neither voltage trim nor remote sense will be used, connect pin 3 to pin 4 and pin 5 to pin 6. 3. caution: the converter will be permanently damaged if the remote sense (pin 6) is shorted to ground. damage may also result if the output common or positive output is disconn ected from the load when the remote sense leads are connected to the load. 4. when using remote sense for voltage compensation or when using remote sense for trim, the output will drift over temperature. contact applications engineering for more information at powerapps@crane-eg.com external trim connection 1 make connections at converter. r l output common mtr single output converter 4 3 5 10 1 positive input input common 6 sense return positive sense positive output r t 1 1 f igure 3: t rim c onnection 1, 2, 3 trim formulas v out = desired output voltage; rt = trim resistor 3.3v: rt = 1300 * v out C 4304 1.2475 5v: rt = 1300 * v out C 6512 1.2475 8.5v: rt = 1300 * v out C 1 1015 1.2475 12v: rt = 1300 * v out C 15631 1.2475 15v: rt = 1300 * v out C 19498 1.2475 r l output common remote sense connection 2 make connections at load. mtr single output converter 4 3 5 10 1 input common 6 sense return positive output 2 2 positive input positive sense f igure 4: r emote s ense c onnection 4 tr im a nd r e mo te se n se (a v a i lable on s in gle o ut p ut mod els on ly) m tr (50) s d dc-dc c 28 (16-50) v o lt inp ut 30 watt page 4 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
bottom view mtr single flanged and non-flanged dot on top of cover indicates pin one. dotted line outlines flanged package option. 6 10 7 8 9 1 2 3 4 5 f igure 5: p in o ut s ingle o utput m odels for dimens ions see figure 30 on page 17 and figure 31 on page 18. bottom view mtr dual flanged and non-flanged dot on top of cover indicates pin one. 6 10 7 8 9 1 2 3 4 5 dotted line outlines flanged package option. for dimens ions see cases figure 30 on page 17 and figure 31 on page 18. f igure 6: p in o ut d ual o utput m odels p in out p s o d o 1 positive input positive input 2 inhibit inhibit 3 sense return positive output 4 output common output common 5 positive output negative output 6 positive sense case ground 7 case ground case ground 8 case ground case ground 9 sync sync 10 input common input common inhibit leave unconnec ted sync in connect to input common sense lines must be connected to appropriate outputs t able 1: p in o ut t able 2: p ins not in u se m tr (50) s d dc-dc c 28 (16-50) v o lt inp ut 30 watt page 5 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
mod el n u m ber in g key mtr 28 12 d f / 883 base model input voltage output voltage screening number of outputs case option ("f" indicates flanged option, non-flanged case has no designator in this position) (s = single, d = dual) (standard screening has no designator in this position.) f igure 7: m odel n umbering k ey t able 3: smd n umber c ross r eference f igure 8: c over m arking for m tr (50) - 50 v in t able 4: m odel n umber o ptions mod el nu m ber o p t ion s t o determine the model number enter one option from each categ o ry in the form below . categ o ry b ase model and input voltage output voltage 1 number of outputs 2 case options 3 s creening 4 o p t ion s mtr28 3r3, 05, 8r5, 12, 15 s (non-flanged, leave blank) (standard, leave blank) 05, 12, 15 d f (flanged ) es 883 f i ll in fo r m od el # mtr28 / notes 1. output v oltage: an r indicates a decimal point. 3r3 is 3.3 volts out. the values of 3.3 and 8.5 volts are only available in single output models. 2. number of outputs: s is a single output and d is a dual output. 3. case options: for the standard case, figure 30 on page 17, leave the case option blank. for the flanged case option, figure 31 on page 18, insert the letter f in the case option position. 4. screenin g: for standard screening leave the screening option blank. for other screening options, insert the desired screening level. for more information see t able 9 on page 19 and t able 10 on page 20. s md nu m bers s tandard m icrocircuit d rawing (s md) mtr s imilar p art 5962-0150103hxc mtr283r3s/883 5962-9306803hxc mtr2805 s /883 5962-9306903hxc mtr2812s/883 5962-9307003hxc mtr2815s/883 5962-9320503hxc mtr2805 d /883 5962-9307103hxc mtr2812d/883 5962-9307203hxc mtr2815d/883 to indicate the flanged case option change the x to z in the smd number . the smd number shown is for class h screening, non-flanged. for exact specifications for an smd product, refer to the smd drawing. s mds c an b e d ownloaded from http:// www.landandmaritime.dla.mil/programs/smcr mtr2805s cage 50821 interpoint mtr (50) dc-dc converter b sn dc crane aerospace & electronics twn m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 6 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
t able 5: o perating c onditions , a ll m odels : 25c t c , 28 v in , 100% load , unless otherwise specified . a ll m odels parameter conditions min typ max units lead soldering tempera ture 1 10 seconds max . 300 c storage tempera ture 1 -65 +150 c case opera ting full power -55 +125 c tempera ture absolute 1 -55 +135 derating output power/current 1 linearly from 100% at 125c to 0% at 135c esd r ating 1 mil std 883 m ethod 3015 > 8000 v mil-prf-38534, 3.9.5.8.2 c lass 3b isola tion: input to output or any @ 500 vdc at 25c 100 megohms pin to case except case pin s input t o output cap acitance 1 50 pf current limit 2 % of full load 140 % audio rejection 1 40 db conversion frequency , f ree r un -55c t o +125c 530 670 khz synchroniza tion input frequency 500 675 khz -55c t o +125c duty cycle 1 40 60 % active low 0.8 v active high 1 4.5 5.0 referenced t o input common if not used connect t o input common inhibit active low (output disabled) inhibit pin pulled low 0.8 v do not apply a voltage to the inhibit pin. 3 inhibit pin source current 1 8 ma referenced t o input common inhibit active high (output enabled) inhibit pin condition open collect or or do not apply a voltage to the inhibit pin. 3 unconnected open inhibit pin vol tage 1 9 11 v notes 1. guaranteed by qualification test and/or analysis. not an in-line test. 2. dual outputs: the over-current limit will trigger when the sum of the currents from both outputs reaches 140% (typical value) of the maximum rated total current of both outputs. 3. an external inhibit interface should be used to pull the inhibit low or leave it floating. the inhibit pin can be left unconnected if not used. for mean time between failures (mtbf) contact applications engineering powerapps@crane-eg.com +1 425-882-3100 option 7 m t (50) ingle an ual - onerters 28 (1-50) t t 30 att page 7 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
t able 6: e lectrical c haracteristics -55c to +125c case , 28 v in , 100% load , free run , unless otherwise specified . single output models mtr283r3s mtr2805s mtr288r5s units parameter conditions min typ max min typ max min typ max output vol tage 3.201 3.30 3.399 4.85 5.00 5.15 8.23 8.5 8.77 v output current v in = 16 to 50 v 0 6.06 0 5.0 0 2.94 a output power v in = 16 to 50 v 0 20 0 25 0 25 w output ripple t c = 25c 10 40 15 70 15 60 mv p-p 10 k h z - 2 mh z t c = -55c to +125c 15 50 15 90 20 60 line regula tion v in = 16 t o 50 v 0 10 2 50 2 50 mv load regula tion no load t o full 1 10 2 50 2 50 mv input vol tage continuous 16 28 50 16 28 50 16 28 50 v no load t o full transient 50 ms 1 80 80 80 v input current no load 40 80 50 80 50 80 ma inhibited 3 8 3 8 3 8 input ripple current 2 10 k h z - 10 mh z 30 100 30 100 30 100 ma p-p efficiency t c = 25c 73 74 75 77 77 81 % t c = -55c t o +125c 71 74 73 76 76 79 load f ault 3 power dissip ation 8 12 8 12 6 12 w short circuit recover y 1 1.4 6 1.4 5 1.4 5 ms step load response 4 transient 80 250 100 300 150 400 mv pk 50% - 100% - 50% recover y 50 200 50 200 30 200 s step line r esponse 1, 4 transient 300 200 300 400 500 mv pk 16 - 40 - 16 v recover y 400 400 400 s start-up 5 delay 2.5 5 2.5 5 2.5 5 ms full load overshoot 1 0 50 0 80 0 150 mv pk cap acitive load 1 no effect on dc 3000 3000 3000 f performance notes 1. guaranteed by qualification test and/or analysis. not an in-line test. 2. tested with 6800 pf ceramic bypass capacitor connected externally from input common to case. 3. indefinite short circuit protection not guaranteed above 125c case. 4. recovery time is measured from application of the transient to point at which v out is within 1% of final value. 5. tested on release from inhibit. m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 8 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
notes 1. guaranteed by qualification test and/or analysis. not an in-line test. 2. tested with 6800 pf ceramic bypass capacitor connected externally from input common to case. 3. indefinite short circuit protection not guaranteed above 125c case. 4. recovery time is measured from application of the transient to point at which v out is within 1% of final value. 5. tested on release from inhibit. single output models mtr2812s mtr2815s units parameter conditions min typ max min typ max output vol tage 11.64 12.00 12.36 14.55 15.00 15.45 v output current v in = 16 to 50 v 0 2.5 0 2.0 a output power v in = 16 to 50 v 0 30 0 30 w output ripple t c = 25c 10 40 10 40 mv p-p 10 khz - 2 mhz t c = -55c to +125c 15 90 15 90 line regula tion v in = 16 t o 50 v 2 50 2 50 mv load regula tion no load t o full 2 50 2 50 mv input vol tage continuous 16 28 50 16 28 50 v no load t o full transient 50 ms 1 80 80 v input current no load 50 80 50 80 ma inhibited 3 8 3 8 input ripple current 2 10 khz - 10 mhz 35 100 35 100 ma p-p efficiency t c = 25c 77 80 79 80 % t c = -55c t o +125c 75 77 75 77 load f ault 3 power dissip ation 6 12 5 12 w short circuit recover y 1 1.4 5 1.4 5 ms step load response 4 transient 150 400 150 500 mv pk 50% - 100% - 50% recover y 30 200 30 200 s step line r esponse 1, 4 transient 400 500 500 600 mv pk 16 - 40 - 16 v recover y 400 400 s start-up 5 delay 2.5 5 2.5 5 ms full load overshoot 1 0 180 0 180 mv pk cap acitive load 1 no effect on dc 3000 3000 f performance t able 7: e lectrical c haracteristics -55c to +125c case , 28 v in , 100% load , free run , unless otherwise specified . m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 9 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
notes 1. guaranteed by qualification test and/or analysis. not an in-line test. 2. up to 90% of the total output current/power is available from either output providing the opposit e output is carrying at least 10% of the total output power . 3. effect on negative v out from 50%/50% loads to 80%/20% or 20%/80% loads. 4. ef fect on negative v out from 50%/50% loads to 90%/10% or 10%/90% loads. see figure 21 on page 14. 5. tested with 6800 pf ceramic bypass capacitor connected externally from input common to case. 6. indefinite short circuit protection not guaranteed above 125c case. 7. recovery time is measured from application of the transient to point at which v out is within 1% of final value. 8. t ested on release from inhibit. 9. applies to each output. dual output models mtr2805d mtr2812d mtr2815d units parameter conditions min typ max min typ max min typ max output vol tage + v out 4.850 5.00 5.150 11.64 12.00 12.36 14.55 15.00 15.45 v - v out 4.825 5.00 5.172 11.58 12.00 12.42 14.47 15.00 15.53 output current 2 either output 0 2.5 4.5 1 0 1.25 2.25 1 0 1.00 1.80 1 a v in = 16 to 50 v t otal output 5 2.5 2.00 output power 2 either output 0 12.5 22.5 1 0 15 27 1 0 15 27 1 w v in = 16 to 50 v t otal output 25 30 30 output ripple t c = 25c 5 40 20 80 20 80 mv p-p 10 khz - 2 mhz v out t c = -55c to +125c 10 90 30 120 20 120 line regula tion + v out 2 50 2 50 2 50 mv v in = 16 to 50 v - v out 5 100 20 150 40 180 load regula tion + v out 2 50 2 50 2 50 mv no load t o full - v out 10 100 20 150 20 180 cross regula tion 1 see note 3 6 10 3 6 3 6 % effect on -v out , 25c see note 4 9 14 5 9 6 9 input vol tage continuous 16 28 50 16 28 50 16 28 50 v no load t o full transient 50 ms. 1 80 80 80 v input current no load 50 90 C 60 90 60 90 ma inhibited 3 8 3 8 3 8 input ripple current 5 10 khz - 10 mhz 25 100 30 100 30 100 ma p-p efficiency t c = 25c 76 79 76 80 78 80 % balanced load t c = -55c to +125c 73 78 74 77 75 77 load f ault 6 power dissip ation 7 12 5 12 5 12 w short circuit recover y 1 1.4 5.0 1.4 5.0 1.4 5.0 ms step load response 7 transient 80 300 130 300 120 400 mv pk 50% - 100% - 50% v out recovery 70 200 10 200 10 200 s step line response 1, 7 transient 200 400 200 400 400 500 mv pk 16 - 40 - 16 v v out recovery 400 400 400 s st art-up 8 dela y 2.5 5 2.5 5 2.5 5 ms full load overshoot 1 0 180 0 180 0 180 mv pk cap acitive load 1, 9 no effect on dc 1500 1500 1500 f performance t able 8: e lectrical c haracteristics -55c to +125c case , 28 v in , 100% load , free run , unless otherwise specified . m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 10 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
t ypical p erformance p lots : 25c case , 28 v in , 100% load , free run , unless otherwise specified . f or reference onl y , not guaranteed specific ations . mtr2805s s tep l oad 50% - 100% - 50% mtr2805s a udio r ejection mtr2805s s tep l ine 16 - 40 v ol ts mtr2805s s tep l ine 40 - 16 v ol ts f igure 9 f igure 10 f igure 11 f igure 12 m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 1 1 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
t ypical p erformance p lots : 25c case , 28 v in , 100% load , free run , unless otherwise specified . f or reference onl y , not guaranteed specific ations . f igure 13 f igure 14 f igure 15 f igure 16 mtr2805s s tart - up into n o l oad , 3000 f c ap l oad mtr2805s s tart - up into n o l oad mtr283r3s e fficiency 45 55 65 75 85 4 8 12 16 20 watts output power 20% 100% efficiency (%) 28 v 50 v 16 v 42 v mtr2805s e fficiency 40 45 50 55 60 65 70 75 80 85 5 10 15 20 25 watts output power 20% 100% efficiency (%) 28 v 50 v 16 v 42 v m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 12 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
t ypical p erformance p lots : 25c case , 28 v in , 100% load , free run , unless otherwise specified . f or reference onl y , not guaranteed specific ations . f igure 17 mtr2812s e fficiency f igure 18 f igure 19 mtr2815s e fficiency 50 60 70 80 90 5 10 15 20 25 30 watts output power 20% 100% efficiency (%) 28 v 50 v 16 v 42 v 70 75 80 85 90 5 10 15 20 25 watts output power 20% 100% efficiency (%) 28 v 50 v 16 v 42 v mtr288r5s e fficiency 50 60 70 80 90 5 10 15 20 25 watts output power 20% 100% efficiency (%) 28 v 50 v 16 v 42 v m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 13 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
t ypical p erformance p lots : 25c case , 28 v in , 100% load , free run , unless otherwise specified . f or reference onl y , not guaranteed specific ations . -10 -8 -6 -4 -2 0 2 4 6 8 10 10/90 30/70 50/50 70/30 90/10 mtr2805d mtr2812d mtr2815d -v ou t voltage change (%) out pu t load (+vout/-vout %) f igure 20 f igure 21 f igure 22 f igure 23 mtr2815d a udio r ejection mtr c ross r egul ation mtr2815d s tep l oad 50% - 100% - 50% mtr2815d s tep l ine 16 - 40 v ol ts m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 14 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
t ypical p erformance p lots : 25c case , 28 v in , 100% load , free run , unless otherwise specified . f or reference onl y , not guaranteed specific ations . f igure 24 f igure 25 f igure 26 f igure 27 mtr2815d s tart - up into n o l oad , 1500 f c ap l oad e ach mtr2815d s tart - up into n o l oad mtr2805d e fficiency 50 55 60 65 70 75 80 85 5 10 15 20 25 watts output power 20% 100% efficiency (%) 28 v 50 v 16 v 42 v mtr2815d s tep l ine 40 - 16 v ol ts m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 15 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
t ypical p erformance p lots : 25c case , 28 v in , 100% load , free run , unless otherwise specified . f or reference onl y , not guaranteed specific ations . 65 70 75 80 85 90 5 10 15 20 25 watts output power 20% 100% efficiency (%) 28 v 50 v 16 v 42 v f igure 28 f igure 29 mtr2815d e fficiency mtr2812d e fficiency 50 55 60 65 70 75 80 85 5 10 15 20 25 30 watts output power 20% 100% efficiency (%) 28 v 50 v 16 v 42 v m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 16 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
0.155 (3.94) 0.955 (24.26) 0.155 (3.94) 0.955 (24.26) 6 10 7 8 9 seam seal 0.000 0.040 dia (1.02) 0.000 0.000 0.400 max. (10.16) 0.25 (6.4) 0.245 (6.22) 1.845 (46.86) 2.100 max. (53.34) 1 2 6 10 bottom view mtr single and dual 3 4 5 7 8 9 0.000 0.000 0.245 (6.22) 1.845 (46.86) 2.100 max. (53.34) 1.115 max. (28.32) 1 2 3 4 5 0.645 (16.38) 1.045 (26.54) 1.445 (36.70) 0.645 (16.38) 1.045 (26.54) 1.445 (36.70) squared corner and dot on top of case indicate pin one. squared corner and dot on top of case indicate pin one. weight: 50 grams maximum case dimensions in inches (mm) tolerance 0.005 (0.13) for three decimal places 0.01 (0.3) for two decimal places unless otherwise specified caution heat from reflow or wave soldering may damage the device. solder pins individually with heat application not exceeding 300c for 10 seconds per pin. materials header cold rolled steel/nickel/gold cover kovar/nickel pins #52 alloy/gold ceramic seal gold plating of 50 - 150 microinches included in pin diameter seal hole 0.120 0.002 (3.05 0.05) case h2 mtr sd, rev l, 2015.04.21 please refer to the numerical dimensions for accuracy.. 1.115 max. (28.32) dual single f igure 30: c ase h2 m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 17 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
f igure 31: c ase k3 6 10 7 8 9 0.040 dia (1.02) 0.000 0.400 max. (10.16) 0.25 (6.4) 0.155 (3.94) 0.955 (24.26) seam seal 0.245 (6.22) ? 0.230 (5.84) 1.845 (46.86) 2.320 (58.93) 0.230 (5.84) 2.320 (58.93) 1 2 6 10 flanged cases: designator ?f? required in case option position of model number. bottom view mtr single and dual flanged 3 4 5 7 8 9 (0.000) 0.245 (6.22) 1.845 (46.86) (2.090 (53.09)) (0.000) (2.090 (53.09)) 1 2 3 4 5 0.645 (16.38) 1.045 (26.54) 1.445 (36.70) 0.645 (16.38) 1.045 (26.54) 1.445 (36.70) 0.000 1.115 max. (28.32) 0.555 (14.1) dot on top of case indicates pin one dot on top of case indicates pin one single dual weight: 52 grams maximum case dimensions in inches (mm) tolerance 0.005 (0.13) for three decimal places 0.01 (0.3) for two decimal places unless otherwise specified caution heat from reflow or wave soldering may damage the device. solder pins individually with heat application not exceeding 300c for 10 seconds per pin. materials header cold rolled steel/nickel/gold cover kovar/nickel pins #52 alloy/gold, ceramic seal gold plating of 50 - 150 microinches included in pin diameter seal hole 0.120 0.002 (3.04 0.05) case k3 mtr sd f, rev m, 2015.04.21 please refer to the numerical dimensions for accuracy. 2 x r 0.170 (4.32) 2 x dia 0.162 0.002 (4.11 0.05) 2 x r 0.170 (4.32) 2 x dia 0.162 0.002 (4.11 0.05) (2.910 max (73.91)) flange thickness: 0.060 (1.52) base plate detail, edge view top of header m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 18 of 20 mtr-02 rev ae - 2016.04.26 crane aerospace & electronics power solutions www.craneae.com/interpoint
t able 9: e lement e valuation m tr (50) s ingle and dual dc-dc converters 28 (16-50) v o lt inp ut C 30 watt page 19 of 20 mtr-02 rev ae - 2016.04.26 table is for reference only. see individual series' datasheets for specific screening. t able 8: e lement e valuation h igh r eliability dc-dc c onverters and emi f ilters /883 (c lass h) e lement e valuation 1 h igh r eliability /883 (c lass h) qml c lass h /883 c omponent -l evel t est p erformed m/s 2 p 3 element electrical n n visual n n internal visual n final electrical n n wire bond evaluation n n notes 1. element evaluation does not apply to standard and /es product. 2. m/s = active components (microcircuit and semiconductor die). 3. p = passive components, class h element evaluation. not applicable to standard and /es element evaluation. crane aerospace & electronics power solutions www.craneae.com/interpoint
t able 10: e nvironmental s creening m tr (50) s ingle and dual dc-dc converters mtr (50) single and dual, mtr-02 rev ae - 2016.04.26. this revision supersede s all previous releases. all technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. crane electronics, inc. reserves the right to make changes in products or specifications without notice. interpoint is a registered trademark of crane co. mtr series is a trademark of crane electronics, inc. copyright ? 1999 - 2016 crane electronic s, inc. all rights reserved. www .craneae.com/interpoint page 20 of 20 28 (16-50) v o lt inp ut C 30 watt table is for reference only. see individual series' datasheets for specific screening. t able 9: e nvironmental s creening h igh r eliability dc-dc c onverters and emi f ilters s tandard , /es and /883 (c lass h) e nvironmental s creening h igh r eliability s tandard , /es and /883 (c lass h) non -qml 1 qml 2 t est p erformed s tandard /es c lass h /883 pre-cap inspection, method 2017, 2032 n n n temperature cycle (10 times) method 1010, cond. c, -65c to +150c, ambient n method 1010, cond. b, -55c to +125c, ambient n constant acceleration method 2001, 3000 g n method 2001, 500 g n pind, test method 2020, cond. a n 3 burn-in method 1015, +125c case, typical 4 96 hours n 160 hours n final electrical test, mil-prf-38534, group a, subgroups 1 through 6, -55c, +25c, +125c case n subgroups 1 and 4, +25c case n n hermeticity test gross leak, cond. c 1 , fluorocarbon n n fine leak, cond. a 2 , helium n n gross leak, dip n final visual inspection, method 2009 n n n test methods are referenced to mil-std-883 as determined by mil-prf-38534. notes 1. standard and es are non-qml products and may not meet all of the requirements of mil-prf-38534. 2. all processes are qml qualified and performed by certified operators. 3. not required by dla but performed to assure product quality. 4. burn-in temperature designed to bring the case temperature to +125c minimum. burn-in is a powered test. crane aerospace & electronics power solutions

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