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Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converters
28 Volt input - 15 Watt
Features
* FullyqualifiedtoClassHorK * -55Cto+125Coperation * 16to40VDCinput * FullyIsolated
* Radhardoptocouplerfeedback
* Fixedfrequency,550kHztypical
* Transientprotection50V/120ms * Inhibitfunction * Syncfunction
* Topology-SingleEndedForward models
vDc SIngLE 2.5 3.3 5 12 15 DUAL 5 12 15
* Indefiniteshortcircuitprotection * Undervoltagelockout * Upto82%efficiency
description
TheSMHFSeriesTMof28VDC/DCconvertersoffersawide inputvoltagerangeof16to40voltsandupto15wattsof outputpower.Theunitsarecapableofwithstandingshortterm transientsupto50volts.Thepackageisahermeticallysealed, projection-weldedmetalcase.Flangedandnon-flangedmodels areavailable.
theoutputloadcurrentandprovidingaconstantcurrentoutput abovetheoverloadpoint.
HigHer Power DenSity
Screening
SMHFconvertersofferscreeningoptionstoSpacePrototype(O), ClassH,orClassK.RadiationtoleranttoRadiationHardness Assurance(RHA)levelsof"-"(O)or"R",perMIL-PRF-38534. Interpointmodelnumbersusean"O"intheRHAdesignatorpositiontoindicatethe"-"(dash)RadiationHardnessAssurancelevel ofMIL-PRF-38534,whichisdefinedas"noRHA".See"ClassH andK,MIL-PRF-38534Screening"tablesformoreinformation. TheSMHFconvertersareswitchingregulatorsthatuseaquasisquarewave,single-endedforwardconverterdesignwitha constantswitchingfrequencyof550kHz.Isolationbetweeninput andoutputcircuitsisprovidedwithatransformerintheforward pathandatemperaturecompensatedopto-couplerinthefeedbackcontrolloop.Theopto-couplerisradiationhardenedandis especiallyselectedforspaceapplications. FortheSMHFdualoutputmodels,crossregulationismaintained bytightlycoupledoutputmagnetics.Upto70%ofthetotaloutput powerisavailablefromeitheroutput,providingtheopposite outputissimultaneouslycarrying30%ofthetotaloutputpower. Predictablecurrentlimitisaccomplishedbydirectlymonitoring
TheSMHFSeriesoffersanewstandardofperformanceforsmall sizeandhighpowerdensity.Atjust0.33inchhighandatotal footprintof1.7in2,thislowprofilepackageoffersatotalpower densityofupto30wattspercubicinch. TheSMHFconverter'sfeed-forwardcompensationsystem providesexcellentdynamicresponseandnoiserejection.Audio rejectionistypically50dB.Typicaloutputvoltageresponsefor a50%to100%steploadtransientisaslowas1.3%witha150 Srecoverytime.Inputripplecurrentistypically35mAp-pwith outputripplevoltagetypically50mVp-p. SMHFconvertersprovideaninhibitterminalthatcanbeused todisableinternalswitching,resultinginnooutputandverylow quiescentinputcurrent.Theconverterisinhibitedwhenalogic low(0.8-outputdisabled)isappliedtotheinhibitpin.The unitisenabledwhenthepin,whichisinternallyconnectedtoa pull-upresistor,isleftunconnectedorisconnectedtoanopencollectorgate.Theopencircuitoutputvoltageassociatedwiththe inhibitpinis8.5to12VDC.Intheinhibitmode,amaximumof 4mAmustbesunkfromtheinhibitpinat28VDCinput.
Low noiSe, HigH AuDio rejection
converter DeSign
inHibit Function
CraneAerospace&Electronics Electronicsgroup(InterpointBrand) POBox97005*RedmondWA98073-9705 425.882.3100*electronics@craneae.com www.craneae.com
Page1of15 RevD-20070404
ClearedbyU.S.DoDOSRforPublicRelease OSRcasenumber09S-0995,datedMarch13,2009.
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converters
28 Volt input - 15 Watt
SyncHronizAtion
AsynchronizationfeatureisincludedwiththeSMHFSeriesthat allowstheusertomatchtheswitchingfrequencyoftheconverter tothefrequencyofthesystemclock.Thisallowstheuser toadjustthenominally550kHzoperatingfrequencytoany frequencywithintherangeof500kHzto600kHz.Thisisinitiated byapplyingacompatibleinputofthedesiredfrequencytopin5. Theinitialtransitiononthesyncpinshouldbeanegativetransition(i.e.fromhighstatetolowstate)
unDervoLtAge Lockout
Undervoltagelockoutpreventstheunitsfromoperatingbelow approximately14VDCinputvoltagetokeepsystemcurrent levelssmooth,especiallyduringinitializationorre-startoperations.
SHort circuit Protection
SMHFSeriesconvertersprovideshortcircuitprotectionby restrictingtheoutputcurrenttoapproximately115%ofthe fullloadoutputcurrent.Theoutputcurrentissensedinthe secondarystagetoprovidehighlypredictableandaccurate currentlimiting,andtoeliminatefoldbackcharacteristics.
Positive Input
5 H
2 F
Positive Output
ID Inhibit PWM Controller IC Input Common Output Common FET Driver Limit Ref.
Figure 1: SMHF Single Output - BlOck DiagraM
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Page2of15 RevD-20070404
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converters
28 Volt input - 15 Watt
Operating COnditiOns and CharaCteristiCs
input Voltage range *16to40VDCcontinuous *50Vforupto50msectransient power dissipation (pd) *8W output power *upto15wattsdependingonmodel lead soldering temperature (10 sec per lead) *300C storage temperature range (case) *-65Cto+150C case operating temperature (tc) *-55Cto+125Cfullpower *-55Cto+135Cabsolute derating output power/current (tc) *Linearlyfrom100%at125Cto0%at135C output Voltage temperature coefficient *100ppm/Ctypical *150ppm/Cmaximum input to output capacitance *60pFtypical current limit *115%offullloadtypical isolation *100megohmminimumat500VDC *Anypintocase,exceptcasepin audio rejection *50dBtypical conversion Frequency (55c to +125c tc) *Freerun550kHztypical 480kHzmin,620kHzmax inhibit pin Voltage (unit enabled) *8.5to12V undervoltage lockout *14Vinputtypical
synC and inhibit
sync in (500 to 600 kHz) *Dutycycle40%to60% *Logiclow0.8Vmax *Logichigh4.5Vmin,5Vmax *Referencedtoinputcommon *Ifnotused,connecttoinputcommon inhibit ttl open collector *Logiclow(outputdisabled) Logiclowvoltage0.8Vmax Inhibitpincurrent12mAmax *Referencedtoinputcommon *Logichigh(outputenabled) Opencollectororunconnected
meChaniCal and envirOnmental
size (maximum) nonflanged 1.460x1.130x0.330(37.08x28.70x8.38mm).SeecaseE1fordimensions. Flanged 2.005x1.130x0.330(50.93x28.70x8.38mm).Seecaseg1fordimensions.
30gramstypical
Weight (maximum)
screening SpacePrototype,ClassH,orClassK

RadiationtoleranttoRadiationHardnessAssurance(RHA)levelsof"-"(O)or"R",perMIL-STD-38534.Interpointmodelnumbersusean"O"inthe RHAdesignatorpositiontoindicatethe"-"(dash)RadiationHardnessAssurancelevelofMIL-PRF-38534,whichisdefinedas"noRHA". See"ClassHandK,MIL-PRF-38534Screening"tablesformoreinformation. Availableconfigurations:OO,HO,HR,KR
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Page3of15 RevD-20070404
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converters
28 Volt input - 15 Watt
pin OUt
pin 1 2 3 4 51 6 7 8 single Output Inhibit noconnection O utputCommon P ositiveOutput Sync C aseground I nputCommon P ositiveInput dual Output Inhibit PositiveOutput OutputCommon negativeOutput Sync Caseground InputCommon PositiveInput

1.IfSyncisnotused,pin5shouldbeconnecteddirectlytoinputcommon.
Dot on top of cover indicates pin one.
1
2
3
4
5
BOTTOM VIEW SMHF SINGLE AND DUAL NON-FLANGED OR FLANGED
8 7 6
Dotted line outlines flanged package option.
SeecasesE1andg1fordimensions.
Figure 2: pin Out
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Page4of15 RevD-20070404
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converters
28 Volt input - 15 Watt
mOdel nUmbering key
Base Model Input Voltage Output Voltage Number of Outputs (S = single, D = dual) Case Option (Non-flanged case has no designator in this position) Screening Radiation Level SMHF 28 05 S F / K R
StanDarD MicrOcircuit Drawing (SMD)
smd nUmbers

InPROCESS 5962-0251002HXC 5962-9213902HXC 5962-9166402HXC 5962-9160102HXC 5962-9555902HXC 5962-9214402HXC 5962-9161402HXC
SMHF SiMilar part
SMHF282R5S/HO SMHF283R3S/HO SMHF2805S/HO SMHF2812S/HO SMHF2815S/HO SMHF2805D/HO SMHF2812D/HO SMHF2815D/HO
Toindicatetheflangedcaseoptionchangethe"X"to"Z"In theSMDnumber.TheSMDnumbershownisforClassH screening,non-flanged,andnoRadiationHardnessAssurance (RHA)level.SeetheSMDforthenumbersforotherscreening andradiationlevels.ForexactspecificationsforanSMD product,refertotheSMDdrawing.CallyourInterpoint representativeforstatusontheSMHFSMDreleaseswhich are"inprocess."SMDscanbedownloadedfrom: http://www.dscc.dla.mil/programs/smcr
mOdel seleCtiOn
SMHF28 Basemodel Voutvalue / numberofoutputscaseoptionscreening
Chooseonefromeachofthefollowingrows Voutvalue numberofoutputs Caseoption Screening forsingles2.5,3.3,5,12,15 forduals:5,12,15 "R"=decimalpoint,3R3=3.3VDC S(single)orD(dual) non-flanged,leaveblank F-flanged OO*-Spaceprototype,HO,HR,KR
ofMIL-PRF-38534,whichisdefinedas"noRHA"
*Interpointmodelnumbersusean"O"intheRHAdesignatorpositiontoindicatethe"-"(dash)RadiationHardnessAssurancelevel
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Page5of15 RevD-20070404
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converters
28 Volt input - 15 Watt
ElectricalCharacteristics:25CTc,28VDCVin,100%load,radiationlevelO,unlessotherwisespecified.
SIngLEOUTPUTMODELS
paraMeter Output VOltage Output current Output pOwer Output ripple line regulatiOn lOaD regulatiOn input VOltage nO lOaD tO Full input current input ripple current eFFiciencY lOaD Fault2 cOnDitiOnS tc = 25c Vin = 16 tO 40 VDc Vin = 16 tO 40 VDc 10 kHz - 2 MHz tc = -55c tO +125c Vin = 16 tO 40 VDc nO lOaD tO Full cOntinuOuS TRAnSIEnT120ms1 nO lOaD inHiBiteD 10 kHz - 10 MHz tc = -55c tO +125c tc = 25c SHOrt circuit pOwer DiSSipatiOn recOVerY1, 3 50% - 100% - 50% tranSient4 recOVerY3 16 - 40 -16 VDc tranSient4 recOVerY3 DelaY
SMHF282R5S
MIn TYP MAX 2.475 2.5 2.525 -- 0 -- -- -- -- 16 0 -- -- -- -- 65 -- -- -200 -- -- -- 15 25 5 28 28 -- 20 6 30 -- 67 3 7.5 50 50 2.4 6 50 50 40 50 40 12 50 50 -- 6 30
SMHF283R3S
MIn TYP MAX 3.27 3.30 3.33 -- 0 -- -- 16 0 -- -- -- -- 68 -- -- -- -- 60 80 5 20 28 -- 25 5 45 -- 73 5 7.5 2.4 8 160 240 100 50 40 50 65 12 80 120 -- 8 30
SMHF2805S
MIn TYP MAX 4.95 5.00 5.05 -- 0 -- -- -- -- 16 0 -- -- -- -- 73 -- -- -- -- 30 150 5 20 28 -- 25 5 35 -- 75 3.5 7.5 2.4 12 80 240 100 50 40 50 40 12 80 120 -- 8 30
unitS VDc a w mVp-p mV mV VDc V mA mAp-p % w ms mVpk s mVpk ms ms mVpk F
50 -- 50 --
Step lOaD reSpOnSe Step line reSpOnSe1 Start-up 0 tO 28 VDc capacitiVe lOaD
200 -400 150 400 270 -- 150 300
-500 150 500 -- 150 300
-800 550 800 -- -- -- -- 0.8 10 -- -- 1.2 20 250 --
-800 550 800 -- -- -- -- 0.8 10 200 -- 1.2 25 300 300
-800 550 800 -- -- -- -- 0.8 10 100 -- 1.2 25 600 300
OVerSHOOt1, 4 tc = 25c
notes 1. Guaranteed by design, not tested. 2.Indefiniteshortcircuitprotectionnotguaranteedabove125C(case) 3.Recoverytimeismeasuredfromapplicationofthetransient tothepointatwhichVoutiswithinregulation.
4.Steptransitiontime>10s.
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Page6of15 RevD-20070404
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converters
28 Volt input - 15 Watt
ElectricalCharacteristics:25CTc,28VDCVin,100%load,radiationlevelO,unlessotherwisespecified.
SIngLEOUTPUTMODELS
paraMeter Output VOltage Output current Output pOwer Output ripple line regulatiOn lOaD regulatiOn input VOltage nO lOaD tO Full input current input ripple current lOaD Fault2 eFFiciencY cOnDitiOnS tc = 25c Vin = 16 tO 40 VDc Vin = 16 tO 40 VDc 10 kHz - 2 MHz tc = -55c tO +125c Vin = 16 tO 40 VDc nO lOaD tO Full cOntinuOuS TRAnSIEnT120ms1 nO lOaD inHiBiteD 10 kHz - 10 MHz tc = -55c tO +125c tc = 25c SHOrt circuit pOwer DiSSipatiOn recOVerY1, 3 50% - 100% - 50% tranSient4 recOVerY3 16 - 40 -16 VDc tranSient4 recOVerY3 DelaY
SMHF2812S
11.8812.0012.12 -- 0 -- -- -- -- 16 0 -- -- -- -- 76 -- -- -700 -- -800 -- -- -- -- -- -- 60 50 5 20 28 -- 25 5 35 -- 79 3.5 7.5 150 150 550 0.8 10 200 -- 1.25 15 150 200 100 50 40
SMHF2815S
14.8515.0015.15 -- 0 -- -- -- -- 16 -- -- 60 100 5 20 28 -- 25 5 35 -- 80 3.5 7.5 200 600 550 0.8 10 200 -- 1.00 15 175 260 100 50 40 50 62 12 80 120 -- 8 30 800 1200 800 1.2 25 1500 100
MIn TYP MAX MIn TYP MAX
unitS VDc a w mVp-p mV mV VDc V mA mAp-p % w ms mVpk s mVpk ms ms mVpk F
50 0 55 -- 12 -- 80 -- 120 -- -- 8 30 700 1000 800 1.2 1200 100 78 -- -- -800 -- -800 -- -- --
Step lOaD reSpOnSe Step line reSpOnSe1 Start-up 0 tO 28 VDc capacitiVe lOaD
OVerSHOOt1, 4 tc = 25c
25 --
notes 1. Guaranteed by design, not tested. 2.Indefinite short circuit protection not guaranteed above 125C (case) 3.Recoverytimeismeasuredfromapplicationofthetransient tothepointatwhichVoutiswithinregulation.
4.Steptransitiontime>10s.
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Page7of15 RevD-20070404
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converters
28 Volt input - 15 Watt
ElectricalCharacteristics:25CTc,28VDCVin,100%load,radiationlevelO,unlessotherwisespecified.
DUALOUTPUTMODELS
paraMeter Output VOltage Output current2 Output ripple VOut line regulatiOn Vin = 16 tO 40 VDc lOaD regulatiOn nOLOADTOFULL crOSS regulatiOn3 input VOltage nO lOaD tO Full input current input ripple current eFFiciencY cOnDitiOnS + VOut - VOut
SMHF2805D
MIn TYP MAX 4.92 5.00 5.08 -- -- -- -- + VOut -- -- -- -- -- 16 -- -- -- -- 75 -- 1.2 -- 100 -- 5 60 1.68 12 160 240 50 50 150 7.5 40 50 12 120 -- 6 30 80 50
SMHF2812D
MIn TYP MAX 11.8212.0012.18 -- -- -- -- -- -- -- -- 16 -- -- -- -- 76 -- -- -- -- 100 -- 5 70 15 175 50 50 150 6 40 275
SMHF2815D
MIn TYP MAX 14.8515.0015.15 14.7815.0015.23 0.5 -- 100 -- 5 70 0.7 15 175 275 50 50 150 6 40 50 12 50 -- -- -- -- -- -- -- -- 16 --
unitS VDc a w mVp-p mV mV % VDc V
4.95 5.00 5.05 11.8812.0012.12
Output pOwer2
Vin = 16 tO 40 VDc Vin = 16 tO 40 VDc 10 kHz - 2 MHz tc = -55c tO +125c BalanceD lOaD BalanceD lOaD eFFect On - VOut cOntinuOuS TRAnSIEnT50ms1 nO lOaD inHiBiteD 10 kHz - 10 MHz tc = -55c tO +125c SHOrt circuit pOwer DiSSipatiOn recOVerY1, 5 50% - 100% - 50% tranSient7 recOVerY5 recOVerY5 DelaY + VOut - VOut - VOut + VOut - VOut
-- 0.625 0.875
100
100
100
20 -- 6 28 -- 20 6 30 77 3 7.5
20 -- 3 28 -- 25 5 40 81 3 7.5
20 -- 3 28 -- 25 5 40 82 3 7.5 300 200 100
50 -- 12 120 80 -- 50 -- -- 76 -- --
mA mAp-p % w ms mVpk mVpk s mVpk ms mVpk F ms
60
55
55
120 -- 6 50 600 600 750 1.2 25 600
80
lOaD Fault4
-- --
6 -- 50 -- -600 -600 -- -750 -- 0 -- --
Step lOaD reSpOnSe6 BalanceD lOaDS Step line reSpOnSe1 VOut Start-up 0 tO 40 V
-600 200 600 -600 150 600 -- 150 -800 600 800 -- 0 0.8 -- -- 12 -- 500 1.2 30
-600 300 600 -600 100 600 -- 200 -750 550 750 -- 0 0.8 -- -- 12 -- 500 1.2 25
16 - 40 -16 VDc tranSient7
0.8 200
550 12 --
OVerSHOOt1, 7 tc = 25c
100
500 47
200
500 10
500 10
capacitiVe lOaD
notes 1. Guaranteed by design, not tested. 2.Upto70%ofthetotaloutputpowerisavailablefromeitheroutputprovidingthe oppositeoutputissimultaneouslycarrying30%ofthetotaloutputpower.Each outputmustcarryaminimumof30%ofthetotaloutput powerinordertomaintainregulationonthenegativeoutput. 3.Effecton-Voutforthefollowingconditions,percentagesareoftotalpower: +Po=50%to10%and-Po=50%,+Po=50%and-Po=50%to10% andfrom+Po=70%/-Po=30%to+Po=30%/-Po=70% allconditionsarereferencedtothebalancedloadscondition:50%/50%
4.Indefiniteshortcircuitprotectionnotguaranteedabove125C(case) 5.Recoverytimeismeasuredfromapplicationofthetransienttopointat whichVoutiswithinregulation. 6.Responseofeitheroutputwiththeoppositeoutputheldathalfofthetotaloutput power. 7.Steptransitiontime>10s.
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Page8of15 RevD-20070404
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converters
28 Volt input - 15 Watt
TypicalPerformanceCurves:25CTc,28VDCVin,100%load,freerun,unlessotherwisespecified.
90
16V 90 16V 80 28V 70 40V 60 16V 90
80
80
EFFICIENCY (%)
EFFICIENCY (%)
70
28V
EFFICIENCY (%)
40V
70
40V 28V
60
60
50 40
50
50
2
SMHF 2805S EFFICIENCY
OUTPUT POWER (Watts)
4
6
8
10
12
40
2
4
6
8
10
12
14 15
40
SMHF2812S EFFICIENCY
OUTPUT POWER (Watts)
2
4
6
8
10
12
14 15
SMHF2815S EFFICIENCY
OUTPUT POWER (Watts)
Figure 3
Figure 4
Figure 5
90 16V 80
90 16V 80
90 16V 80
EFFICIENCY (%)
EFFICIENCY (%)
EFFICIENCY (%)
70 28V
70 40V 60
70 40V 60 28V
40V
60
28V
50
50
50
40
40 2 4 6 8 10 12
2
4
6
8
10
12
14 15
40
2
4
6
8
10
12
14
SMHF2805D EFFICIENCY
OUTPUT POWER (Watts)
SMHF2812D EFFICIENCY
OUTPUT POWER (Watts)
SMHF2815D EFFICIENCY
OUTPUT POWER (Watts)
Figure 6
Figure 7
Figure 8
0 -10
ATTENUATION (dB)
-20
500mV/div.
-30 -40 -50 -60 -70
100mV/div.
VOUT
100% to 50%
50% to 100%
20V/div.
-80 -90 -100 0.1 1 10 100
VIN
SMHF SERIES AUDIO REJECTION
FREQUENCY (kHz)
Figure 9
SMHF2805S STEP LINE RESPONSE
1ms/div 16V TO 40V
SMHF2805S STEP LOAD RESPONSE
50s/div 50% 100%
Figure 10
Figure 11
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Page9of15 RevD-20070404
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converters
28 Volt input - 15 Watt
TypicalPerformanceCurves:25CTc,28VDCVin,100%load,freerun,unlessotherwisespecified.
20V/div.
100% to 10%
200mV/div. 20V/div.
POUT= 12W
VIN
100mV/div.
+VOUT
10% to 100%
1V/div.
VOUT
VIN
SMHF2805S STEP LOAD RESPONSE
200s/div 10% 100%
2 ms/div
SMHF2805S TURN-ON INTO FULL LOAD
SMHF2815D STEP LINE RESPONSE
1 ms/div 16V TO 40V
Figure 12
Figure 13
Figure 14
100% to 50%
PO= 7.5 W
PO= 7.5 W -VOUT 100% to 20%
100mV/div.
100mV/div.
5V/div.
+VOUT
20% to 100%
20V/div.
50s/div 20% 100% SMHF+2815D VOUT STEP LOAD RESPONSE
50% to 100%
VIN
50s/div 50% 100% SMHF2815D +VOUT STEP LOAD RESPONSE
2 ms/div
SMHF2815D TURN-ON INTO FULL LOAD
Figure 15
Figure 16
Figure 17
10
10
16
-V OUT VOLTAGE CHANGE (%)
-VOUT VOLTAGE CHANGE (%)
8 6 4 2 0 -2 -4 -6 -8 10 20
2805D
SMHF2805S&D
5 2812D 2815D 0
INPUT VOLTAGE (Volts)
2812D COND A 2815D COND B 2812D 2805D
15
14
-5 2805D
13
SMHF2812S&D SMHF2815S&D
-10
0
20
40
60
80
100
12 10
11
12
13
14
15
POSITIVE OUTPUT LOAD (% OF TOTAL LOAD) -VOUT WITH SHIFT IN LOAD BALANCE
-10
30
40
50
CROSS REGULATION
SMHF2805D/SMHF2812D/SMHF2815D CROSS REGULATION
OUTPUT LOAD (%) COND. A: 50% LOAD +V; 50% to 10% -V COND. B: 50% LOAD -V; 50% to 10% +V
LOW LINE DROPOUT VS. LOAD
OUTPUT POWER (Watts) 50 mV DROP
Figure 18
Figure 19
Figure 20
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Page10of15 RevD-20070404
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converter cases
28 Volt input - 15 Watt
BOTTOM VIEW CASE E1
Projection Weld
1.130 max. (28.70) 0.960 (24.38) 0.030 dia. (0.76)
Squared corner and dot on top of case indicate pin one.
1 2 3 4 5
0.160 (4.06) 0.000 0.330 max. (8.38)
8
7
6
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 compression glass seal
Case E1, Rev C, 20061221 Please refer to the numerical dimensions for accuracy. All information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. Copyright (c) 1999-2006 Interpoint Corp. All rights reserved.
Figure 21: caSe e1
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Page11of15 RevD-20070404
1.460 max. (37.08)
0.205 (5.21)
0.505 (12.83)
0.705 (17.91)
0.905 (22.99)
1.105 (28.07)
0.000
0.25 (6.35)
0.000
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converter cases
28 Volt input - 15 Watt
BOTTOM VIEW CASE G1 Flanged cases: Designator "F" required in Case Option position of model number.
Projection Weld
1.130 max. (28.70) 0.960 (24.38) 0.030 dia. (0.76)
Squared corner and dot on top of case indicate pin one.
1 2 3 4 5
0.560 (14.22) 8 7 6
0.128 dia (3.25)
0.160 (4.06) 0.000
Flange thickness: 0.047 (1.19)
2.005 max (50.93) 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/Gold Pins #52 alloy/Gold compression glass seal
Case G1, Rev C, 20061221 Please refer to the numerical dimensions for accuracy. All information is believed to be accurate, but no responsibility is assumed for errors or omissions. Interpoint reserves the right to make changes in products or specifications without notice. Copyright (c) 1999-2006 Interpoint Corp. All rights reserved.
Figure 22: caSe g1
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Page12of15 RevD-20070404
2.005 max. (50.93)
0.330 max. (8.38)
0.25 (6.35)
0.000
0.505 (12.83)
0.705 (17.91)
0.905 (22.99)
1.105 (28.07)
0.000
0.140 (3.56)
0.205 (5.21)
1.590 (40.39)
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converters
28 Volt input - 15 Watt
Class H and K, MIl-PRF-38534 ElEMEnt EvaluatIon
COmpOnent-level test perfOrmed
spaCe prOtOtype (O) nOn-Qml1 M/s2 P3
no no N/A no no N/A N/A N/A N/A no no no no N/A no yes no no no no no no no no N/A no no no no no yes yes yes no no no no no no N/A N/A yes yes no no
Class h Qml M/s2 P3
yes yes N/A no no N/A N/A N/A N/A no no yes yes N/A yes
Class k Qml M/s2
yes yes yes yes yes yes yes yes yes N/A N/A yes yes yes no
P3
yes yes N/A yes yes N/A N/A N/A N/A yes yes yes yes N/A yes
Element Electrical Element Visual Internal Visual Temperature Cycling Constant Acceleration Interim Electrical Burn-in Post Burn-in Electrical Steady State Life Voltage Conditioning Aging Visual Inspection Final Electrical Wire Bond Evaluation4 SEM SLAMTM/C-SAM: Input capacitors only (Add'l test, not req. by H or K)
Notes: 1. Non-QML products do not meet all of the requirements of MIL-PRF-38534. 2. M/S = Active components (Microcircuit and Semiconductor Die) 3. P = Passive components 4. Not applicable to EMI filters that have no wirebonds. Definitions: Element Evaluation: Component testing/screening per MIL-STD-883 as determined by MIL-PRF-38534 SEM: Scanning Electron Microscopy SLAMTM: Scanning Laser Acoustic Microscopy C-SAM: C - Mode Scanning Acoustic Microscopy
www.craneae.com
Page13of15 RevD-20070404
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converters
28 Volt input - 15 Watt
Class H and K, MIl-PRF-38534 EnvIRonMEntal sCREEnIng
end item-level test perfOrmed Non-destruct bond pull2 Method 2023 Pre-cap Inspection Method 2017, 2032 Temperature Cycle (10 times) Method 1010, Cond. C, -65C to 150C, ambient Constant Acceleration Method 2001, 3000 g PIND Test Method 2020, Cond. A Pre burn-in test Burn-in Method 1015, 125C case, typical 96 hours 160 hours 2 x 160 hours (includes mid-BI test) Final Electrical Test MIL-PRF-38534 Group A, Subgroups 1 through 6 -55C, +25C, +125C case Radiography Method 2012 Post Radiography Electrical Test Room temperature Hermeticity Test Fine Leak, Method 1014, Cond. A Gross Leak, Method 1014, Cond. C Final visual inspection Method 2009
spaCe prOtOtype (O) nOn-Qml1
no yes
Class h Qml
yes3 yes
Class k Qml
yes yes
yes yes no yes
yes yes yes3 yes
yes yes yes yes
yes no no
no yes no
no no yes
yes N/A N/A yes yes yes
yes N/A N/A yes yes yes
yes N/A yes3 yes yes yes
Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534. Notes: 1. Space Prototype (O), non-QML products, do not meet all of the requirements of MIL-PRF-38534. 2. Not applicable to EMI filters that have no wirebonds. 3. Not required by DSCC but performed to assure product quality.
www.craneae.com
Page14of15 RevD-20070404
Crane Aerospace & Electronics Power Solutions
smHF single and dual dc/dc converters
28 Volt input - 15 Watt
Class H and K, MIl-PRF-38534 RadIatIon assuRanCE
EnvIRonMEntal sCREEnIng lEvEls RadIatIon HaRdnEss
assuRanCE lEvEls O2: Standard, no radiation guarantee OO HO N/A
sPaCE PRototYPE (o)
non-QMl3
Class H QMl
Class K QMl
p5: Radiation tolerant-Tested lots up to 30 K Rads (Si) total dose SEU guarantee up to 40 MeV r5: Radiation tolerant-Tested lots up to 100 K Rads (Si) total dose SEU guarantee up to 40 MeV f5: [smrt only] Radiation tolerant-Tested lots up to 300 K Rads (Si) total dose SEU guarantee up to 60 MeV h1,5: Radiation tolerant-Tested lots up to 1,000 K Rads (Si) total dose
N/A
HP4
KP4
N/A
HR4
KR4
N/A
N/A
KF4
N/A
HH4
KH4
Notes: 1. Our EMI filters are designed exclusively with passive components providing maximum tolerance for space environment requirements. 2. Interpoint model numbers use an "O" in the RHA designator position to indicate the "-" (dash) Radiation Hardness Assurance level of MIL-PRF-38534, which is defined as "no RHA". 3. Space Prototype (O), non-QML, products do not meet all of the requirements of MIL-PRF-38534. 4. Redmond site, Interpoint, has a Radiation Hardness assurance plan on file with DSCC. Our SMD products with RHA "P", "R," "F" and "H" code meet DSCC requirements. 5. Space converters are available with Radiation Hardness Assurance (RHA) levels of "O" and "R" with the following exceptions: SMRT28xxx is only available with Radiation Hardness Assurance (RHA) levels of "O" "P", "R" and "F". SMHP120xxx is only available with Radiation Hardness Assurance (RHA) level of "O". Space filters are only available with Radiation Hardness Assurance (RHA) levels of "O" and "H".
SMHF Single and Dual, Rev D - 20070404. This revision supercedes all previous releases. All technical information is believed to be accurate, butnoresponsibilityisassumedforerrorsoromissions.Interpointreservestherighttomakechangesinproductsorspecificationswithoutnotice. SMHFSeriesisatrademarkofInterpoint.Copyright(c)1999-2007InterpointCorporation.Allrightsreserved.www.craneae.com
Page15of15

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