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features s mall size, 1.16 in 2 (7.46 cm 2 ) - m sa s urface mount package - mg a ? C55 to +125c operation ? 16 to 40 vdc input ? 50 v for 50 ms transient protection ? fully isolated ? fixed high frequency switching ? inhibit function ? indefinite short circuit protection ? up to 76% efficiency description the interpoint? msa series? and mga series ? of dc-dc converters provide up to 5 watts of output power over the full military temperature range with up to 76% efficiency. thick-film hybrid technique s provide military/aerospace reliability levels and optimum miniatu rization. the converters are offered with standard screening, es screening, or fully compliant to 883 mil-prf-38534 class h screening. standard microcircuit drawings (smd) are available. see table 12: element evaluati on on page 14 and table 13: environmental screening on page 15 for screening options and descriptions . c onverter d esign the converters are switching regulators that use a flyback converter design with a constant switching frequency of 550 khz typical. they are regulated, isolated units using a pulse width modulated topology and are built as high reliability thick-film hybrids. isolation between input and output circuits is provided with a transformer in the forward power path and an optical link in the feedback control loop. excellent input line transient response and audio rejection is achieved by an advanced feed- forward compen sation technique . negative output regulation is maintained by tightly coupled magnetics. up to 4 watts, 80% of the total output power, is available from either output, provided that the opposite output is simultaneously carrying 20% of the total power in order to maintain the specified regulation on the negative output. a predictable current limit is accomplished by direct monitoring of the output load current, which results in a constant current output. internal input and output filters eliminate the need for external capacitors for stable operation. output filter examples in figure 3: low noise output filter msa and mga single output models on page 3 and figure 4: low noise output filter msa and mga dual output models on page 3 provide suggeste d solutions for systems where very low output ripple is required. w ide v oltage r ange the msa converters are designed to provide full power operatio n over a full 16 to 40 vdc voltage range. operation below 16 volts, including mil-std-704e emerge ncy power conditions is possibl e with derated power. low-line drop out graphs, figure 17 on page 10 and figure 23 on page 11, graphs provide more information. i mproved d ynamic r esponse the feed-forward compensation system provides excellent dynamic respons e and noise rejection. audio rejection is typically 50 db. the minimum to maximum step line transient response is typically less than 1%. m o d els vdc o utput single dual 5 5 5.2 (msa only) 12 12 15 15 page 1 of 15 msa_mga rev ac - 2013.06.13 crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 watt 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
i nhibit f unction the inhibit feature can be used to disable internal switching and inhibit the units output. inhibiting in this manner results in low standby current and no generation of switching noise. the converter is inhibited when the inhibit pin is pulled below 0.8 v and enabled when its inhibit pin is left floating. an external inhibit interface should be capable of pulling the converters inhibit pin below 0.8 v 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 output voltage associated with the inhibit pin is 9 to 11 v. in the inhib it mode, a maximum of 4 ma must be sunk from the inhibit pin. see figure 2: inhibit interface msa and mga on page 3. u ndervoltage l ockout and t ransient p rotection undervoltage lockout helps keep system current levels low during initialization or re-start operation s. they can withstand short term transients of up to 50 volts without damage. a low voltage lockou t feature keeps the converter shutdown below approximately 13 vdc to ensure smooth initialization. mil - st d-461 use our fmsa-461 (down-leade d) or our fmga-461 (surface mount) emi filter to pass the ce03 requirements of mil-std-461c. p ackaging msa - down-leaded package the msa series converters are packaged in hermetically sealed, projection-welded metal cases which provide emi/rfi shielding. the small size, 1.075 x 1.075 x 0.270 inches (27.31 x 27.31 x 6.86 mm), saves space and weight in critical applications. see figure 26: msa case dimensio ns on page 12. mga - surface mount package the surface mount mga dc-dc converters can be mounted with pick-and-place equipment or manually. see figure 28: mga gull-wing solde r pad layout on page 13 for more information. internal compon ents are soldere d with sn96 (melting temperature 221c) to prevent damage during reflow. maximum reflow temperature for surface mounting the mga converter is 220c for a maximum of 30 seconds. sn60, 62, or 63 are the recommended types of solder. hand soldering should not exceed 300c for 10 seconds per pin. the hermetically sealed metal cases are available in two different lead configuratio ns. see figure 27: mga case dimensions on page 13 and figure 28: mga gull-wing solder pad layout on page 13. negative output output common positive output input common case ground positive input inhibit pwm control error amp isolated feedback vr = dual output + + f igure 1: b lock d iagram msa and mga page 2 of 15 msa_mga rev ac - 2013.06.13 crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt www.craneae.com/interpoint
200 pf 3.9 k 10 k inhibit input common 10 k 12 k 5 k 400 50 k 2n3904 10v vcc positive input f igure 2: i nhibit i nterface msa and mga + c 2 t 1 c 1 case c 3 input common positive input positive output output common to load positive input input common positive output output common from input power source emi filter case t 1 f igure 3: l ow n oise o utput f ilter msa and mga s ingle o utput m odels c 2 t 2 c 1 t 2 c 4 c 3 c 5 to loads case input common positive input positive output output common positive input input common positive output output common from input power source emi filter case negative output + + f igure 4: l ow n oise o utput f ilter msa and mga d ual o utput m odels the filter suggestions in figure 3 and figure 4 will further reduce the output ripple for systems requiring very low output noise. c1 = 0.27 f ceramic capacitor, 500 v c2 = c4 = 6.8 f tantalum capacitor c3 = c5 = 0.27 f ceramic capacitor single output: t1 = 15t #28 awg winding on toroid, 5 m = 5000 dual output: t2 = 10t #28 awg winding on toroid, 5 m = 5000 page 3 of 15 msa_mga rev ac - 2013.06.13 crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt www.craneae.com/interpoint
top view mga 1 2 3 4 5 6 7 8 9 10 18 17 16 15 14 13 12 11 19 20 triangle in upper left corner of cover indicates pin one. ? f igure 5: msa p in o ut b ottom v iew 6hh )luh 0 dvh lphvlrv r sdh bottom view msa 8 7 6 54321 squared corner and dot on top of package indicate pin one. f igure 6: mga p in o ut t op v iew 6hh )luh 06 dvh lphvlrv r sdh p in o ut mg a mo d els p in s ingle o utput dual o utput ,klel ,klel 3rvllyh ,s 3rvllyh ,s 1r rhflr 1r rhflr ,s rppr ,s rppr dvh urg dvh urg 1r rhflr 1r rhflr 3rvllyh 2s 3rvllyh 2s 3rvllyh 2s 2s rppr 2s rppr 2s rppr 2s rppr 1hdlyh 2s 1r rhflr 1r rhflr dvh urg dvh urg m sa p ins not in u se ,klel hdyh frhf hg 1r rhflr sl hdyh frhf hg mg a p ins not in u se ,klel hdyh frhf hg 1r rhflr slv rhf r fdvh urg iru ehv (0, shuirupdf h p in o ut m sa mo d els p in s ingle o utput dual o utput 3rvllyh 2s 3rvllyh 2s 2s rppr 2s rppr 1r rhflr 1hdlyh 2s 1r rhflr 1r rhflr 5 ,klel ,klel 3rvllyh ,s 3rvllyh ,s ,s rppr ,s rppr dvh urg dvh urg 7r phh vshflilhg shuirupdfh iru kh 0 doo slv pv eh frhfhg hfhs 1r rhflr slv dg ,klel sl t able 1: msa p in o ut t able 2: msa p ins not in u se t able 3: mga p in o ut t able 4: mga p ins not in u se 3dh ri 06b0 5hy crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt www.craneae.com/interpoint
msa 28 12 d / 883 base model input voltage output voltage number of outputs (s = single, d = dual) (r = decimal point, 5r2 = 5.2 vout) screening (standard screening has no designator in this position.) m o d el nu m berin g key s md n u m bers s tandard m icrocircuit d rawing (smd) msa s imilar p art 5962-9309201 h x c msa2805s/883 5962-0251301 h x c msa285r2s/883 5962-9309301h x c msa2812s/883 5962-9309401h x c msa2815s/883 5962-0052201h x c msa2805 d /883 5962-9308901 h x c msa2812d/883 5962-9309001 h x c msa2815d/883 for exact specifica tions for an smd product, refer to the smd drawing. smds can be downloaded from: http://www.landandmaritime.dla.mil/programs/smcr m o d el n u m ber o ptions t o determine the model number enter one option from each category in the form below . c ate g ory b ase model and i nput voltage o utput voltage 1 n umber of o utputs 2 c ase o ptions 3 s creening 4 o ptions msa 05, 5r2, 12, 15 s msa C down-leade d: leave blank (standard, leave blank) mga 05, 12, 15 d mga C straight leads: leave blank es mga C gull wings: z 883 fill in f or mo d el # m a __________ __________ / notes: 1. 5r2 is a 5.2 output model. 2. number of outputs: s is a single output and d is a dual output 3. case options: for the msa down-lead ed case leave the case option blank. for the mga straight-lead case, leave the case option blank. for the mga, surface mount gull-wing case, insert the letter z 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 table 11: element evaluation on page 12 and table 12: environmental screening on page 13. m o d el nu m berin g key mga 28 12 s z / 883 base model input voltage output voltage screening number of outputs (s = single, d = dual) gull wing lead option (straight leaded case has no designator in this position.) (standard screening has no designator in this position.) s md n u m bers s tandard m icrocircuit d rawing (smd) mga s imilar p art 5962-9309201 h z c mga2805sz/883 5962-9309301hzc mga2812sz/883 5962-9309401hzc mga2815sz/883 5962-0052201hzc mga2805dz/883 5962-9308901 h z c mga2812dz/883 5962-9309001 h z c mga2815dz/883 for exact specifica tions for an smd product, refer to the smd drawin g. smd numbers are shown for the surface mount gull-wing case. for the straight- lead case, replace the z (hzc) in the smd with a y (hyc). smds can be downloaded from: http://www. landandmaritime.dla.mil/programs/smcr page 5 of 15 msa_mga rev ac - 2013.06.13 crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt www.craneae.com/interpoint
t able 8: o perating c onditions , a ll m odels : 25c t c, 28 v dc v in , 100% load , unless otherwise specified . a ll m odels parameter conditions min typ ma x units lead soldering temperature 10 seconds ma x. p er l ead 300 c mga, s urface m ount sn 60, 62 or 63 r ecommended 220c for max. of 30 seconds s older r eflow 2 storage temperature 1 -65 +150 c case operating full power -55 +125 c temperature absolute 1 -55 +135 derating output power/current 1 linearly from 100% at 125c to 0% at 135c isolation, input to output , @ 500 vdc at 25c 100 megohms a ny pin to case e x cept case p in i nput to o utput c apacitance 1 50 pf u nder v oltage l oc k out 1 13 v current limit 1, 3 % of full load 115% % audio rejection 1 50 db conversion frequency free run -55 to +125c 400 600 khz inhibit active low (output disabled) inhibit pin pulled low 0.8 vdc do not apply a voltage to the inhibit pin. 4 inhibit pin source current 1 4 ma referenced to input common inhibit active high (output enabled) do not apply a voltage to the inhibit pin. 4 inhibit pin condition open collector or unconnected open pin voltage 1 9 11 v notes: 1. guaranteed by qualification test and/or analysis. not an in-line test. 2. see figure 28: mga gull-wing solder pad layout on page 13 for more information 3. dual outputs: the over-current limit will trigger when the sum of the currents from both outputs reaches 115% (typical value) of the maximum rated total current of both outputs. 4. 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. page 6 of 15 msa_mga rev ac - 2013.06.13 crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt www.craneae.com/interpoint
t able 9: e lectrical c haracteristics : -55c to +125c t c , 28 v dc v in , 100% load , free run , unless otherwise specified . notes 1. guaranteed by qualification test and/or analysis. not an in-line test. 2. an external 2 h inductor, added in series to the input, is necessary to maintain specifications. 3. indefinite short circuit protection not guaranteed above 125c (case). 4. recovery time is measured from application of the transient to point at which vout is within 1% of vout at final value. 5. transition time >10 s. msa2805s msa285r2s msa/mga single output models mga2805s ( no mga285r2s ) units parameter conditions min typ ma x min typ ma x output voltage 4.80 5.00 5.20 4.99 5.20 5.40 vdc output current v in = 16 to 40 vdc 0 1000 0 962 ma output power v in = 16 to 40 vdc 0 5 0 5 w output ripple t c = 25c 125 350 110 335 mv p-p 10 kh z - 2 mh z t c = -55c to +125c 525 525 line regulation v in = 16 to 40 vdc 10 50 10 50 mv load regulation n o load to full 10 50 10 50 mv input voltage continuous 16 28 40 16 28 40 vdc no load to full transient 50 ms 1 50 50 v input current no load 27 40 28 40 ma inhibited 3 5 3 4 input ripple current 2 10 khz - 10 mhz 30 200 30 150 ma p-p efficiency t c = 25c 66 71 66 71 % t c = -55c to +125c 64 64 load fault 3, 4 power dissipation 2.0 2.2 w short circuit recovery 1 75 75 ms step load response 4, 5 transient 750 750 mv pk 50% - 100% - 50% recovery 1500 1500 s step line response 1, 4, 5 transient 500 500 mv pk 16 - 40 - 16 vdc recovery 900 900 s start-up delay 75 75 1 ms 0 - 28 v in , f ull l o ad overshoot 1 200 500 mv pk capacitive load 1 t c = 25c no effect on dc performance 300 300 f page 7 of 15 msa_mga rev ac - 2013.06.13 crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt www.craneae.com/interpoint
msa2812s msa2815s msa/mga single output models mga2812s mga2815s units parameter conditions min typ ma x min typ ma x output voltage 11.52 12.00 12.48 14.40 15.00 15.60 vdc output current v in = 16 to 40 vdc 0 417 0 333 ma output power v in = 16 to 40 vdc 0 5 0 5 w output ripple t c = 25c 50 200 50 170 mv p-p 10 kh z - 2 mh z t c = -55c to +125c 300 250 line regulation v in = 16 to 40 vdc 10 50 10 50 mv load regulation n o load to full 10 50 10 50 mv input voltage continuous 16 28 40 16 28 40 vdc no load to full transient 50 ms 1 50 50 v input current no load 29 42 31 44 ma inhibited 3 5 3 5 input ripple current 2 10 khz - 10 mhz 30 150 30 150 ma p-p efficiency t c = 25c 70 76 71 76 % t c = -55c to +125c 68 69 load fault 3, 4 power dissipation 2.1 2.0 w short circuit recovery 1 30 30 ms step load response 4, 5 transient 1100 1500 mv pk 50% - 100% - 50% recovery 3000 3500 s step line response 1, 4, 5 transient 800 500 mv pk 16 - 40 - 16 vdc recovery 1300 1300 s start-up delay 30 30 ms 0 - 28 v in , f ull l o ad overshoot 1 500 500 mv pk capacitive load 1 t c = 25c no effect on dc performance 500 500 f notes 1. guaranteed by qualification test and/or analysis. not an in-line test. 2. an external 2 h inductor, added in series to the input, is necessary to maintain specifications. 3. indefinite short circuit protection not guaranteed above 125c (case). 4. recovery time is measured from application of the transient to point at which vout is within 1% of vout at final value. 5. transition time >10 s. t able 10: e lectrical c haracteristics : -55c to +125c t c , 28 v dc v in , 100% load , free run , unless otherwise specified . page 8 of 15 msa_mga rev ac - 2013.06.13 crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt www.craneae.com/interpoint
msa2805d msa2812d msa2815d msa/mga d ual output models mga2805d mga2812d mga2815d units parameter conditions min typ ma x min typ ma x min typ ma x output voltage +v out 4.80 5.00 5.20 11.52 12.00 12.48 14.40 15.00 15.60 vdc -v out 4.75 5.00 5.25 11.09 12.00 12.96 14.70 15.00 16.20 output current 2 either output 500 800 208 333 167 267 ma v in = 16 to 40 vdc total output 1000 416 334 output power 2 either output 2.50 4 2.50 4 2.50 4 w v in = 16 to 40 vdc total output 5 5 5 output ripple t c = 25c 150 40 140 60 150 mv p-p 10 kh z - 2 mh z v out t c = -55c to +125c 300 250 250 line regulation +v out 10 25 10 50 10 50 mv v in = 16 to 40 v -v out 40 75 40 180 40 180 load regulation +v out 10 50 10 50 10 50 mv n o load to full -v out 50 200 50 200 50 200 c ross re gulation 1, 3 figure 24 (10-90%) 10 20 8 15 7 15 % e ffect on -v out figure 25 (50-10%) 5 8 3.7 6 3 6 input voltage no load to full continuous 16 28 40 16 28 40 16 28 40 vdc transient 50 ms 1 50 50 50 v input current no load 30 35 33 58 38 60 ma inhibited 3 5 3 5 3 5 input ripple current 4 10 khz - 10 mhz 30 160 30 150 30 150 ma p-p efficiency t c = 25c 68 72 69 75 70 75 % t c = -55c to +125c 65 67 68 load fault 5, 6 power dissipation 2.0 1.9 1.8 w short circuit recovery 1 50 30 50 ms step load response 6, 7 transient 500 1400 1400 mv pk 50% - 100% - 50% recovery 1000 4500 4500 s step line response 1, 6, 7 transient 750 500 1500 mv pk 16 - 40 - 16 vdc recovery 1.2 2.0 1.2 ms start-up delay 25 30 25 ms 0 to 28 v in , full l oad overshoot 1 750 500 500 mv pk capacitive load 1 t c = 25c no effect on dc performance 10 100 10 f notes 1. guaranteed by qualification test and/or analysis. not an in-line test. 2. up to 4 watts (80% of full power) is available from either output providing the opposite output is carrying 20% of total power. 3. shows regulation effect on the minus output during defined cross loading conditions. see figure 24 and figure 25 on page 11. 4. an external 2 h inductor, added in series to the input, is necessary to maintain specifications. 5. indefinite short circuit protection not guaranteed above 125c (case). 6. recovery time is measured from application of the transient to point at which vout is within 1% of vout at final value. 7. transition time >10 s. t able 11: e lectrical c haracteristics : -55c to +125c t c , 28 v dc v in , 100% load , free run , unless otherwise specified . page 9 of 15 msa_mga rev ac - 2013.06.13 crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt www.craneae.com/interpoint
f igure 9 f igure 10 output power (watts) msa/mga2815d efficiency efficiency (%) 30 80 40v 70 60 50 40 1 2 3 4 5 6 16v 28v 100 s/div 16 v to 40 v msa/mga2805s step line response 20mv/div. v in 20v/div. v out output power (watts) msa/mga2805s efficiency efficiency (%) 30 80 40v 70 60 50 40 1 2 3 4 5 6 16v 28v f igure 11 output power (watts) msa/mga2812s efficiency efficiency (%) 30 80 40v 70 60 50 40 1 2 3 4 5 6 16v 28v f igure 12 f igure 13 f igure 14 output power (watts) msa/mga2815s efficiency efficiency (%) 30 80 40v 70 60 50 40 1 2 3 4 5 6 16v 28v 100 s/div 50% 100% msa/mga2805s step load response 50mv/div. 50% to 100% 100% to 50% f igure 15 100 s/div 10% 100% msa/mga2805s step load response 50mv/div. 10% to 100% 100% to 10% f igure 16 f igure 17 1 ms/div msa/mga2805s turn-on into no load 1v/div. v in 20v/div. v out t ypical p erformance p lots : 25c t c , 28 v in , 100% load , free run , unless otherwise specified . these are examples for reference only and are not guaranteed specifications. output power (watts) 50 mv drop low line dropout vs. load input voltage (volts) 12 17 16 15 14 13 1 2 3 4 5 6 2805s 2815s 2812s page 10 of 15 msa_mga rev ac - 2013.06.13 crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt www.craneae.com/interpoint
t ypical p erformance p lots : 28 v in , 25c t c , 100% load , free run , unless otherwise specified . these are examples for reference only and are not guaranteed specifications. f igure 18 500 s/div msa/mga2815d turn-on into no load 5v/div. v in 20v/div. +v out ?v out f igure 19 output load (+v out % / ?v out %) 90?10% load on +v, 10-90% load on ?v msa/mga dual cross regulation ?v out voltage change (%) ?10 0 10 90/10 70/30 50/50 30/70 10/90 ?8 ?6 ?4 ?2 2 4 6 8 2815d 2812d f igure 20 output power (watts) 50 mv drop msa/mga low line dropout vs. load input voltage (volts) 12 17 16 15 14 13 1 2 3 4 5 6 2812d 2815d f igure 21 f igure 22 output load (%) cond. a: 50% load +v; 10% to 50% ?v cond. b: 50% load ?v; 10% to 50% +v msa/mga dual cross regulation ?v out voltage change (%) ?5 0 5 10 20 30 40 50 ?4 ?3 ?2 ?1 1 2 3 4 2815d 2812d 2812d cond b cond a f igure 23 f igure 24 200 s/div 16 v to 40 v msa/mga2815d input step line response 100mv/div. v in 20v/div. +v out ?v out 200 s/div 10% 90% msa/mga2815d +v o step load response 200mv/div. 10% to 90% 90% to 10% ?p out =0.5w 100 s/div 10% 50%) msa/mga2815d +v o step load response 100mv/div. 10% to 50% 50% to 10% ?p out =2.5w f igure 25 frequency (khz) msa series audio rejection attenuation (db) 100 0.1 1 10 100 90 80 70 60 50 40 30 20 10 page 11 of 15 msa_mga rev ac - 2013.06.13 crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt www.craneae.com/interpoint
0.000 0.132 (3.35) 0.932 (23.67) 0.000 0.132 (3.35) 8 7 6 54321 0.332 (8.43) 0.532 (13.51) 0.732 (18.59) 0.932 (23.67) 0.025 (0.64) dia. 0.000 0.270 max. (6.86) bottom view case c1 0.205 0.010 (5.21 0.25) projection weld squared corner and dot on top of case indicate pin one. weight: 15 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 cold rolled steel/nickel pins #52 alloy, gold, compression glass seal gold plating of 50 - 150 microinches included in pin diameter seal hole: 0.070 0.003 (1.78 0.08) case c1 msa, rev b, 2013.04.15 please refer to the numerical dimensions for accuracy. 1.075 max. (27.31) 1.075 max. (27.31) f igure 26: msa c ase d imensions page 12 of 15 msa_mga rev ac - 2013.06.13 crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt www.craneae.com/interpoint
f igure 27: mga c ase d imensions f igure 28: mga g ull -w ing s older p ad l ayout straight leads (this view shows straight leads.) 0.010 (0.25) 0.125 ref. (3.18) leads are solder dipped and lead dimensions are prior to solder dip. 0.08 (2.0) 0.010 (0.25) bottom of lead to bottom of case 0.055 (1.40) 0.070 (1.78) 1 1 top view case d1 1.35 ref. (34.29) 0.010 (0.25) 0.08 (2.0) 0.250 max. (6.35) 0.50 (12.7) 2.115 ref. (53.72) 0.015 (0.38) seam seal 0.900 (22.86) 0.800 (20.32) 0.700 (17.78) 0.600 (15.24) 0.500 (12.70) 0.400 (10.16) 0.300 ( 7.62) 0.200 ( 5.08) 0.100 ( 2.54) 1.000 (25.40) 1 2 3 4 5 6 7 8 9 10 18 17 16 15 14 13 12 11 19 20 gull wing leads option 0.000 0.000 weight: 15 grams max. dimensions in inches (mm) tolerance 0.005 (0.13) for three decimal places, 0.01 (0.3) for two decimal places, unless otherwise specified please refer to the numerical dimensions for accuracy. caution maximum reflow temperature is 220c for a maximum of 30 seconds. sn60, sn62, or sn63 are the recommended types of solder. see mga gull-wing solder pads layout. hand soldering should not exceed 300c for 10 seconds per pin. materials header kovar/nickel/gold cover kovar/nickel pins kovar/nickel/gold matched glass seal gold plating of 50 - 225 microinches is included in pin diameter seal hole: 0.040 0.002 (1.02 0.05) case d1, rev d, 2013.04.22 1.110 max (28.19) 1.110 max (28.19) (center to center) the triangle (esd) marking on the cover indicates pin one. cover marking is oriented with pin one at the upper right corner. the straight lead configuration does not require a ?case designator? in the model number. ex. mga2805s the gull wing option (configuration) requires ?z? as a ?case designator? in the model number. ex. mga2805z ? s urface m ount c ase and l ead o ptions 0.102 (2.59) 0.090 (2.29) 0.030 (0.76) 0.050 (1.27) 4x 0.100 (2.54) 18x 1.000 (25.40) 1.000 (25.40) case d1 gull-wing pads case d1 mga solder pads, rev f, 2013.05.31 dimensions in inches (mm) tolerance 0.005 (0.13) for three decimal places 0.01 (0.3) for two decimal places, unless otherwise specified. please refer to the numerical dimensions for accuracy. caution: internal components are soldered with sn96 (melting temperature 221c) to prevent damage during reflow. maximum reflow temperature for surface mounting the mga converter is 220c for a maximum of 30 seconds. sn60, 62, or 63 are the recommended types of solder. hand soldering should not exceed 300c for 10 seconds per pin. solder mask notes 1. pad dimensions are for the solder mask. leads common to each other can be connected to each other as desired. 2. ground (case) pins should be connected to the center pad for improved grounding. 3. connect "no connection" pins to case ground to reduce emi. 4. center pad should not have a solder mask. solder, copper, or au/ni plate are preferred over solder mask for adhesive attach. 5. pre-tin base of converter prior to soldering. 6. if less rotation of case is desired, reduce the width of the large case pad by 0.020 inches (0.51 mm). pad length can be extended 0.010 inches (0.25 mm) towards the case body and an as-desired dimension away from the case body. 7. do not exceed 220c as measured on the body of the converter (top or bottom). 8. attach the body of the case to the board with a thermally conductive adhesive or sn60, 62, or 63 solder. the adhesive can be electrically conductive as well. it can be applied as an underfill post solder or dispensed and cured prior or during solder. 9. in the presence of vibration, to ensure reliable mechanical attachment, the body of the case should be attached with adhesive or solder as noted above (note 8). the leads alone do not provide sufficient mechanical attachment. 3djh ri 06$b0*$ 5hy $& crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt www.craneae.com/interpoint
t able 5: e lement e valuation Ch igh r eliability s tandard , /es and /883 (c lass h) s tandard and /es ( non -qml) and /883 (c lass h, qml) mil-prf-38534 e lement e valuation non -qml 1 qml c omponent -l evel t est p erformed s tandard and /es c lass h /883 m/s 2 m/s 2 p 3 element electrical n n n visual n n internal visual n final electrical n n wire bond evaluation n n notes: 1. standard and /es non-qml products may not meet all of the requirements of mil-prf-38534. 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. t able 12: e lement e valuation page 14 of 15 msa_mga rev ac - 2013.06.13 crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt www.craneae.com/interpoint
table is for reference only. see individual series' datasheets for specific screening. t able 6: e nvironmental s creening Ch igh r eliability s tandard , /es and /883 (c lass h) s tandard and /es ( non -qml) and /883 (c lass h, qml) mil-prf-38534 e nvironmental s creening non -qml 1 qml 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 burn-in method 1015, +125c case, typical 2 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 n hermeticity test gross leak, method 1014, cond. c n n fine leak, method 1014, cond. a 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, non-qml products, may not meet all of the requirements of mil-prf-38534. 2. burn-in temperature designed to bring the case temperature to +125c minimum. burn-in is a powered test. t able 13: e nvironmental s creening msa/mga single and dual, msa_mga rev ac - 2013.06.13. this revision supersedes 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 specifica tions without notice. interpoint, msa series and mga series are trademarks of crane electronics, inc. copyright ? 1999-2013 crane electronics, inc. all rights reserved. www.craneae.com/interpoint page 15 of 15 crane aerospace & electronics power solutions msa/mga single and dual dc-dc converters 28 volt input C 5 w a tt

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