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descriptionThe Interpoint™ SMFL Series™ 28-volt DC/DC converters

are rated p to 65 watts otpt power over a -55° to +125°C

temperatre rane with a 28 VDC nominal inpt. On dal otptmodels p to 70% of the rated otpt power can be drawn from

either the positive or neative otpts. Crrent sharin allowsthe nits to be paralleled for total power of p to 185 watts. The

welded, hermetically sealed packae is only 3.0 1.5 0.40

inches, ivin the series an overall power density of p to 43

watts per cbic inch.

Screening

SMFL converters, also available on SMD drawins, offer the

followin screenin options: Space Prototype (O), Class H, or

Class K. Radiation tolerant to Radiation Hardness Assrance(RHA) levels of “-” (O), “P,” or “R,” per MIL-PRF-38534. Interpoint

model nmbers se an “O” in the RHA desinator position toindicate the “-” (dash) Radiation Hardness Assrance level of

MIL-PRF-38534, which is defined as “no RHA”. See ScreeninTables 1 and 2

DeSign FeatureS

SMFL Series converters are switchin relators that se aqasi-sqare wave, sinle ended forward converter desin with a

constant switchin freqency of 600 kHz typical.

Isolation between inpt and otpt circits is provided with a

transformer in the forward path and a wide bandwidth maneticcoplin in the feedback control loop. The SMFL ses a niqe

dal loop feedback techniqe that controls otpt crrent withan inner feedback loop and an otpt voltae with a cascaded

voltae mode feedback loop. The additional secondary crrent

mode feedback loop improves transient response in a manner

similar to primary crrent mode control and allows for ease ofparallelin, bt withot the cost and compleity.

The constant freqency, plse-width modlated converters se

a qasi-sqare wave sinle-ended forward desin. Tiht load

relation is achieved throh a wide-bandwidth manetic feed-back circit. The otpt voltae on sinle SMFL models can

be trimmed to a specific otpt voltae by addin an eternalresistor (see Fire 1 for resistor vales).

inhibit

The SMFL Series converters have two inhibit terminals (INH1and INH2) that can be sed to disable power conversion,

resltin in a very low qiescent inpt crrent and no enerationof switchin noise. An active low (<0.8 volts) is reqired to inhibit

the converter between INH1 (pin 4) and Inpt Common (pin

2). An active low (<0.5 volts) is reqired to inhibit the converterbetween INH2 (pin 12) and Otpt Common (pin 8).

Sync

Converters may be synced to an eternal clock (525 to 675 kHz)

or to one another by sin the sync in or ot pins. The nominalfree-rn switchin freqency is 600 kHz.

current Share anD Parallel OPeratiOn

Mltiple SMFL converters may be sed in parallel to drive acommon load (see Fire 2). Only sinle otpt models with

SENSE and SNS RTN can be sed in the share mode. In thismode of operation the load crrent is shared by two or three

Features

p w , 3 ( 185 w)

• Operatin temperatre -55° to +125°C

• Qalified to MIL-PRF-38534 Class H and K

• Radiation hardness assrance (RHA) to level R 100 kRad(Si)

• Inpt voltae rane 16 to 40 VDC

• Transient protection 80 V for 50 ms

• Flly isolated, manetic feedback

• Fied hih freqency switchin

• Remote sense and otpt trim on sinle otpt models

• Inhibit fnction

• Synchronization inpt and otpt• Indefinite short circit protection

• Hih power density with p to 85% efficiency

MODELS

VDc OutPut

SINgLE3.35

1215

DuAL±5±12

±15

The information in this docment is a derivative of docments cleared

by the Department of Defense (DoD) Office of Secrity Review (OSR) for pblic release.OSR case nmbers 09-S-0996 dated March 13, 2009 and 09-S-1960 dated Jne 22, 2009.

Crane Aerospace & Electronics Power Solutions

SMFL Single and Dual DC/DC Converters

Pae 1 of 14

28 Volt input – 65 Watt

SMFL Rev AA - 2012.03.19

Crane Aerospace & ElectronicsPower Solutions – Interpoint Products10301 Willows Rd. NE, Redmond, WA 98052+1.425.882.3100 • [email protected]

www.craneae.com/interpoint



operating conditions and characteristics

i V r

•16 to 40 VDC continos

•80 V for 50 ms transient

o pw

•40 to 65 watts dependin on model

l s t (10 )

•300°C

s t r (c)

•-65°C to +150°C

pw d (p)

•14 watts (16 watts SMFL2805S, SMFL2805D)

c o t (t)

• -55°C to +125°C fll power

d o pw/c

•Linearly from 100% at 125°C to 0% at 135°C

o V t cff

•100 ppm/°C typical

i o c

•150 pF, typical

c l

•125% of fll load typical

i

•100 meohm minimm at 500 V

a rj

•50 dB typical

cv Fq (-55°c 125°c)

•Free rn mode 600 kHz typical

‣525 kHz. min, 675 kHz ma

mechanical and enVironmental

sz (x)•3.005 1.505 0.400 inches (76.33 38.23 10.16 mm).

Case u has short, straiht leads. Case V has loner leads

which are bent down.

W (x)

•86 rams

sSpace Prototype (O), Class H, or Class K are radiation tolerant

to Radiation Hardness Assrance (RHA) levels of “-” (O), “P,”

or “R,” per MIL-PRF-38534. Interpoint model nmbers se an“O” in the RHA desinator position to indicate the “-” (dash)

Radiation Hardness Assrance level of MIL-PRF-38534, which isdefined as “no RHA”.

•Available confirations: OO, HP, KP, HR, KR.

•See Screenin Tables 1 and 2 for more information.

sync and inhibit (inh1, inh2)

s

•

Sync In ‣ Inpt freqency 525 to 675 Hz. ‣ Dty cycle 40% min, 60% ma

‣ Active low 0.8 V ma ‣ Active hih 4.5 V min, 5 V ma

‣ Referenced to inpt common

•Sync Ot

‣ Referenced to inpt common

i: inh1 inh2

( v )

•Converter Disabled (active low)

‣ INH1 referenced to inpt common

- Pll voltae to 0.8 V or below by connectin to rond or

other method.

- Inhibit pin sorce crrent, 10 mA ma‣ INH2 referenced to otpt common

- Pll voltae to 0.5 V or below by connectin to rond or

other method.

- Inhibit pin sorce crrent 5 mA ma

•Converter Enabled (active hih)

‣ Inhibit pin open or throh an open collector ‣Open pin voltae

- INH1 = 9 to 12 V

- INH2 = 9 V ma

SMFL converters. In crrent sharin mode, one SMFL converteris desinated as a master. The SLAVE pin (pin 11) of the master

is left nconnected and the MSTR/INH2 pin (pin 12) of the masteris connected to the SLAVE pin (pin 11) of the slave nits. The

nits desinated as slaves have the MSTR/INH2 pin (pin 12)connected to the SNS RTN pin (pin 9). Note that synchronizinthe nits toether is not reqired for crrent sharin operation.

A second slave nit may be placed in parallel with a master andslave; this reqires the TRI pin (pin 3) of the master nit to be

connected to the SNS RTN pin (pin 9). See Fire 2 for a blockdiaram of parallel connections.

When paralleled, p to 95% of the total combined power ratinsof the SMFL converters is available at the load. Overload and

short circit performance are not adversely affected drinparallel operation.


www.craneae.com/interpoint Pae 2 of 14



SMFL Rev AA - 2012.03.19



single output models connection diagrams - trim, sense and parallel

RL

1

2

3

4

5

6

REMOTE SENSE CONNECTION

12

11

10

9

8

7

–

+

28V –

+

Inhibit

Sync In

RL

1

2

3

4

5

6

OUTPUT VOLTAGE ADJUST CONNECTION

12

11

10

9

8

7

–

+

28V –

+

Inhibit

Sync In

RA

Positive Input

Input Common

TR1

INH1

Sync Out

Sync In

MSTR/INH2

Slave

Pos. Sense

Sense Return

Output Common

Positive Output

Positive Input

Input Common

TR1

INH1

Sync Out

Sync In

MSTR/INH2

Slave

Pos. Sense

Sense Return

Output Common

Positive Output

Figure 1: SenSe cOnnectiOnS anD trim table – Single OutPut mODelS

RL

1

Positive Input

Input Common

TR1

INH1

Sync Out

Sync In

2

3

4

5

6

1

2

3

4

5

6

1

2

3

45

6

CONNECT ONLY WHEN 2 SLAVES ARE USED

12

11

10

9

8

7

12

11

10

9

8

7

12

11

10

98

7

–

+

MSTR/INH2

Slave

Pos. Sense

Sense Return

Output Common

Positive Output

MASTER

SLAVE 1

SLAVE 2

28V–

+

Inhibit

Sync In

Positive Input

Input Common

TR1

INH1

Sync Out

Sync In

MSTR/INH2

Slave

Pos. Sense

Sense Return

Output Common

Positive Output

Positive Input

Input Common

TR1

INH1

Sync Out

Sync In

MSTR/INH2

Slave

Pos. Sense

Sense Return

Output Common

Positive Output

Figure 2: Parallel cOnnectiOnS – Single OutPut mODelS

Notes:1. When sin remote sense for voltae

compensation or when sin remote sensefor trim, the otpt will drift over temperatre.Contact Applications Enineerin for moreinformation [email protected].

2. Do not eceed the maimm rated power.

Notes1. No one converter may carry more than its maimm rated crrent.2. Althoh p to 95% of the maimm crrent of paralleled converters is available, individal converter operation, load and layot may

affect the actal crrent shared. Contact Applications Enineerin for more information [email protected].

VOut

increaSe ra

(OhmS)

VOltS 3.3 V 5 V 12 V 15 V

0.1 66 77 27 21

0.2 131 153 55 43

0.3 196 230 82 64

0.4 262 307 109 86

0.5 349 396 139 109





SMFL Rev AA - 2012.03.19



Figure 3: Pin Out

Angled corner indicates pin one.

1

2

3

4

5

6

12

11

10

9

8

7

TOP VIEW

SMFL

(Pin side, marked side)

See cases u and V for dimensions.Case V has the same pin ot.

pin out

p s o d o

1 Positive Inpt Positive Inpt

2 Inpt Common Inpt Common

3 Triple (TR1) Triple (TR1)

4 Inhibit 1 (INH1) Inhibit 1 (INH1)

5 Sync Ot Sync Ot

6 Sync In Sync In

7 Positive Otpt Positive Otpt

8 Otpt Common Otpt Common

9 Sense Retrn Neative Otpt

10 Positive Sense No connection

11 Slave Slave

12Master/Inhibit 2(MSTR/INH2)

Master/Inhibit 2(MSTR/INH2)

pins not in use

p d a

3 TR1 Leave nconnected

4 Inhibit 1 (INH1) Leave nconnected

5 Sync Ot Leave nconnected

6 Sync InConnect to Inpt

Common

9 Sense RetrnConnect to appropriate

otpts

10 Positive SenseConnect to appropriateotpts

11 Slave Leave nconnected

12 Master/Inhibit 2(MSTR/INH2) Leave nconnected





SMFL Rev AA - 2012.03.19



model numbering key

SMFL 28 05 S V / K RBase Model

Input Voltage

Output Voltage

Screening

Number of Outputs(S = single, D = dual)

Case Option(leave blank for standard case U)

Radiation HardnessAssurance (RHA)

smd numbers

Standard Microcircuit

drawing (SMd)

5962R0621302KxC5962R9316302KxC5962R9316202KxC5962R9316102KxC5962R9319102KxC5962R9319202KxC5962R9319302KxC

SMFL SerieS SiMiLar Part

SMFL283R3S/KRSMFL2805S/KRSMFL2812S/KRSMFL2815S/KRSMFL2805D/KRSMFL2812D/KRSMFL2815D/KR

The SMD nmber shown is for Class H screenin, non-flaned,and no Radiation Hardness Assrance (RHA) level. See theSMD for the nmbers for other screenin and RHA levels.For eact specifications for an SMD prodct, refer to the SMDdrawin. SMDs can be down-loaded from:http://www.dscc.dla.mil/prorams/smcr

model selection

on the LineS beLow, enter one SeLection FroM each category to deterMine the ModeL nuMber.

category

smFl28 ___________ / _______

Base Model andInpt Voltae

Otpt Voltae 1 Nmber of Otpts 2 Case/LeadOptions 3

Screenin 4 RHA 5

3r3, 05, 12, 15 s (u, leave blank) o o

SMFL28 is the onlyavailable option

05, 12, 15 d V h p

selection k r

Notes:1. Otpt Voltae: An R indicates a decimal point. 3R3 is 3.3 volts ot.2. Nmber of Otpts: S is a sinle otpt and D is a dal otpt

3. Case Options: For the standard case (case u) leave the case option blank. For case option V, insert the letter V in the case option position.4. Screenin: A screenin level of O is a Space Prototype and is only sed with RHA O. See Screenin Tables 1 and 2 for more information.5. RHA: Interpoint model nmbers se an “O” in the RHA desinator position to indicate the “-” (dash) Radiation Hardness Assrance level of MIL-PRF-

38534, which is defined as “no RHA.” RHA O is only available with Screenin level O. See Screenin Table 2 for more information.





SMFL Rev AA - 2012.03.19



Notes

1. g , .2. unit will sht down above approimately 45 V bt will be ndamaed and will

restart when voltae drops into normal rane.3. Recovery time is measred from application of the transient to point at

which VOuT is within 1% of final vale.

4. Tested on release from inhibit.5. Shall not compromise DC performance.

Electrical Characteristics: -55°C to +125°C TC, 28 VDC Vin, 100% load, RHA level O, nless otherwise specified.

SINgLE OuTPuT MODELS SMFL283R3S SMFL2805SunitS

Parameter cOnDitiOnS MIN TYP MAx MIN TYP MAxOutPut VOltage 3.21 3.30 3.39 4.87 5.00 5.13 VDc

OutPut current Vin = 16 tO 40 VDc 0 — 12.12 0 — 10 a

OutPut POWer Vin = 16 tO 40 VDc 0 — 40 0 — 50 W

OutPut riPPle

10 khz - 2 mhz

tc = 25°c — 10 35 — 15 35mV p-p

tc = -55°c tO +125°c — 10 50 — 30 50

line regulatiOn Vin = 16 tO 40 VDc — 0 20 — 0 20 mV

lOaD regulatiOn nO lOaD tO Full — — 40 — — 20 mV

inPut VOltage cOntinuOuS 16 28 40 16 28 40 VDc

TRANSIENT 50 ms 1,2 — — 80 — — 80 V

inPut current nO lOaD — 70 100 — 70 120

inhibiteD – inh1 — 9 14 — 9 14 mA

inhibiteD – inh2 — 35 70 — 35 70

inPut riPPle 10 khz - 10 mhz — 30 50 — 30 50 mA p-p

eFFiciency tc = 25°c 71 — — 75 78 —%

tc = -55°c tO +125°c 69 — — 73 — —

lOaD Fault ShOrt circuit

POWer DiSSiPatiOn— 12.5 16 — 12.5 18 W

recOVery 1 1.5 6 1.5 4 ms

SteP lOaD reSPOnSe 50% - 100% - 50%

tranSient— ±200 ±300 — ±250 ±350 mV pk

recOVery 1, 3 — 1.5 3.0 — 1.5 3.0 ms

SteP line

reSPOnSe 1, 316 - 40 -16 VDc

tranSient — ±250 ±300 — ±250 ±300 mV pk

recOVery — 200 300 — 200 300 µs

Start-uP 4 Delay — 3.5 10 — 3.5 6 ms

CAPACITIVE LOAD 5 tc = 25°c — — 1000 — — 1000 µF





SMFL Rev AA - 2012.03.19



SINgLE OuTPuT MODELS SMFL2812S SMFL2815SunitS

Parameter cOnDitiOnS MIN TYP MAx MIN TYP MAxOutPut VOltage 11.76 12.00 12.24 14.55 15.00 15.45 VDc

OutPut current Vin = 16 tO 40 VDc 0 — 5 0 — 4.33 a

OutPut POWer Vin = 16 tO 40 VDc 0 — 60 0 — 65 W

OutPut riPPle

10 khz - 2 mhz

tc = 25°c — 0 75 — 30 85mV p-p

tc = -55°c tO +125°c — 45 100 — 45 110

line regulatiOn Vin = 16 tO 40 VDc — 0 20 — 0 20 mV

lOaD regulatiOn nO lOaD tO Full — — 40 — — 20 mV

inPut VOltage cOntinuOuS 16 28 40 16 28 40 VDc

TRANSIENT 50 ms 1,2 — — 80 — — 80 V

inPut current nO lOaD — 50 100 — 50 100

inhibiteD – inh1 — 9 14 — 9 14 mA

inhibiteD – inh2 — 35 70 — 35 70

inPut riPPle 10 khz - 10 mhz — 30 50 — 30 50 mA p-p

eFFiciency tc = 25°c 81 84 — 82 85 —%

tc = -55°c tO +125°c 79 — — 80 — —

lOaD Fault ShOrt circuit

POWer DiSSiPatiOn— 10 16 — 10 16 W

recOVery 1 1.5 4 1.5 4 ms

SteP lOaD reSPOnSe 50% - 100% - 50%

tranSient— ±450 ±600 — ±500 ±600 mV pk

recOVery 1, 3 — 1.5 3.0 — 1.5 3.0 ms

SteP line

reSPOnSe 1, 3

16 - 40 -16 VDc

tranSient — ±250 ±400 — ±250 ±500 mV pk

recOVery — 200 300 — 200 300 µs

Start-uP 4 Delay — 3.5 6 — 3.5 6 ms

CAPACITIVE LOAD 5 tc = 25°c — — 1000 — — 1000 µF

Notes1. g , .2. unit will sht down above approimately 45 V bt will be ndamaed and will

restart when voltae drops into normal rane.3. Recovery time is measred from application of the transient to point at

which VOuT is within 1% of final vale.







SMFL Rev AA - 2012.03.19



Notes1. g , .2. Parallel load share fnction is not characterized for dal otpt models.3. up to 70% of the total otpt power is available from either otpt providin the

opposite otpt is simltaneosly carryin 30% of the total power.4. Effect on neative Vot from 50%/50% loads to 70%/30% or

30%/70% loads.5. Effect on neative Vot from 50%/50% loads to 50% then 10% load on neative

Vot.

6. unit will sht down above approimately 45V bt will be ndamaed and willrestart when voltae drops into normal rane.

7. Recovery time is measred from application of the transient to point at which Votis within 1% of final vale.



DuAL OuTPuT MODELS 2 SMFL2805D SMFL2812D SMFL2815DunitS

Parameter cOnDitiOnS min tyP maX min tyP maX min tyP maXOutPut VOltageVin 16 tO 40 VDc

+VOuT 4.85 5.00 5.15 11.64 12.00 12.36 14.55 15.00 15.45VDc

-VOuT 4.82 5.00 5.18 11.58 12.00 12.42 14.47 15.00 15.53

OutPut current 2, 3

Vin 16 tO 40 VDcEACH OuTPuT 0 — 7 0 — 3.5 0 — 3.03

aTOTAL 0 — 10 0 — 5 0 — 4.33

OutPut POWer 2 Vin = 16 to 40 VDC 0 — 50 0 — 60 0 — 65 W

OutPut riPPle 10 kHz - 2 MHz ± VOut — 50 100 — 50 120 — 50 150 mV p-p

line regulatiOnVin 16 tO 40 VDc

+VOuT — 0 50 — 0 50 — 0 50mV

-VOuT — 25 100 — 25 100 — 25 100

lOaD regulatiOn

nO lOaD tO Full

+VOuT — 0 50 — 0 50 — 0 50mV

-VOuT — 25 100 — 50 120 — 50 150

crOSS regulatiOn

tc = 25°c

SEE NOTE 4 — 5 8 — 2 4 — 2 4%

SEE NOTE 5 — 3 6 — 2 4 — 2 4

inPut VOltage +VOuT 16 28 40 16 28 40 16 28 40 VDc

TRANSIENT 50 ms 1, 6 — — 80 — — 80 — — 80 V

inPut current NO LOAD — 50 120 — 50 100 — 50 100

INHIBITED–INH1 — 9 14 — 9 14 — 9 14mA

INHIBITED–INH2 — 35 70 — 35 70 — 35 70

inPut riPPle current 10 khz - 10 mhz — 30 50 — 30 50 — 30 80 mA p-p

eFFiciency tc = 25°c 75 78 — 81 84 — 82 85 —%

balanceD lOaD tc = -55°c tO +125°c 73 — — 79 — — 80 — —

lOaD Fault ShOrt circuitPOWer DiSSiPatiOn — 12.5 18 — 10 16 — 10 16 W

recOVery 1 — 1.5 4.0 — 1.5 4.0 — 1.5 4.0 ms

SteP lOaD reSPOnSe

± VOut

50% - 100% - 50%tranSient

— ±250 ±350 — ±450 ±600 — ±500 ±600 mV pk

recOVery 1, 7 — 1.5 3.0 3.0 1.5 3.0 1.5 3.0 ms

SteP line reSPOnSe 1

± VOut

16 - 40 -16 VDc

tranSient— ±250 ±300 — ±250 ±400 — ±250 ±500 mV pk

recOVery 7 — 200 300 — 200 300 — 200 300 µs

Start-uP 8 Delay — 3.5 6 — 3.5 6 — 3.5 6 ms

caPacitiVe lOaD 9 tc = 25°c — — 500 — — 500 — — 500 µF





SMFL Rev AA - 2012.03.19



Typical Performance Crves: 25°C Tc, 28 VDC Vin, 100% load, free rn, nless otherwise specified.

Output (Watts)

SMFL2805S & SMFL2805D Efficiency

E f f i c i e n c y ( % )

60

90

85

80

75

70

10 20 30 40 50

28V

40V

65

16V

Figure 4

Output Power (Watts)



60

90

85

80

75

70

10 20 30 40 50 60

40V

16V

65

28V

Figure 5 Figure 6

60

90

85

80

75

70

10 20 30 40 50 6560

65

16V




40V

28V

Figure 7 Figure 9

60

65

70

75

80

85

90

0 10 20 30 40 50 60 70

40 VIN

16 VIN

28 VIN


SMFL2828S Efficiency


50 s/div

16 to 40 V

SMFL2805S Step Line Response

1 0 0 m V / d i v .

2 0 V / d i v .

Vout

Vin

0.1

0.

20.

40.

60.

80.

100.

A t t e n u a t i o n

( d B )

Frequency (kHz)

SMFL Series Audio Rejection

1 10 100

Figure 8

1 0 0 m V / d i v .

100% to 50%

50% to 100%

1ms/divSMFL2805S Step Load Response

Figure 10

1ms/divNo Load

SMFL2805S Turn On Response

1 V / d i v .

2 0 V / d i v .

Vin

Vout

Figure 11 Figure 12

50 s/div16 to 40 V

SMFL2815D Step Line Response

1 0 0 m V / d i v .

+Vout

–Vout

Vin

2 0 V / d i v .





SMFL Rev AA - 2012.03.19



Figure 13 Figure 15

1ms/div

SMFL2815D Step Load Response

2 0 0 m V / d i v .

100% to 50%

50% to 100% –Pout = 32.5W

0

30 40 50 60 – 8

– 6

– 4

– 2

2

4

6

8

SMFL2812D

SMFL2805D

70

SMFL2815D

Positive Output Load (% of Total Load)

-VOUT

with shift in load balance

Cross Regulation

– V o u t V o l t a g e C h a n g e ( % )

5 V / d i v .

2 0 V / d i v .

VIN

–Vout

+Vout

1ms/div

No Load

SMFL2815D Turn On Response

Figure 14

Figure 16

10 20 30 40 50 6011

15

14

13

12

65

16

SMFL2815S & 15D

SMFL2805S & 5D


Low Line Dropout

I n p u t V o l t a g e

( V o l t s )

SMFL2812S & 12D

Typical Performance Crves: 25°C Tc, 28 VDC Vin, 100% load, free rn, nless otherwise specified.





SMFL Rev AA - 2012.03.19



Angled cornerindicates pin one.

1

2

3

4

5

6

12

11

10

9

8

7

0 . 0

0 0

0 . 0

5 0 ( 1 . 2

7 )

0.000

0.120 (3.05)

0.250 (6.35)

0.450 (11.43)

0.650 (16.51)

0.850 (21.59)

1.050 (26.67)

1.250 (31.75)

1.380 (35.05)

1.505 (38.23) max.

0 . 0

0 0

0 . 1

2 0 ( 3 . 0

5 )

0 . 2

5 0 ( 6 . 3

5 )

2 . 7

5 0 ( 6 9 . 8

5 )

2 . 8

8 0 ( 7 3 . 1

5 )

3 . 0

0 5 ( 7 6 . 3

3 ) m a x .

0.128 dia(3.25).

0.040 dia(1.02)

0.23 (5.8) Pin Length

0 . 4

0 0 ( 1 0 . 1

6 ) m a x .

0 . 2

2 0 ( 5 . 5

9

TOP VIEW CASE U*

Flanged case, short-leaded

Seam Seal

*Does not require designator in Case Option position of model number.

Weight: 86 grams maximum

Case dimensions in inches (mm)

Tolerance ±0.005 (0.13) for three decimal places±0.01 (0.3) for two decimal placesunless otherwise specified

CAUTIONHeat from reflow or wave soldering may damage the device. Solder pinsindividually with heat application not exceeding 300°C for 10 seconds per pin.

MaterialsHeader Cold Rolled Steel/Nickel/GoldCover Kovar/NickelPins #52 alloy/Gold, compresssion glas seal

Seal Hole: 0.120 ±0.002 (3.05 ±0.05)

Case U, Rev G, 2012.06.15Please refer to the numerical dimensions for accuracy.

Figure 17: caSe u



SMFL Single and Dual DC/DC Converter Cases


SMFL Rev AA - 2012.03.19



0 . 0

0 0

0 . 2

2 0 ( 5 . 5

9 )

0 . 0

5 0 ( 1 . 2

7 )

0 . 4

0 0 ( 1 0 . 1

6 ) m a x

r e f : 0 . 2

5 0 ± 0 . 0

5 0

( 6 . 3

5 ± 1 . 2

7 )

r e f : 0 . 2

2 5 ( 5 . 7

2

3.45 (87.6) Reference(lead center to lead center)

0.000

0.120 (3.05)

0.250 (6.35)

0.450 (11.43)

0.650 (16.51)

0.850 (21.59)

1.050 (26.67)

1.250 (31.75)

1.380 (35.05)

0 . 0

0 0

0 . 1

2 0 ( 3 . 0

5 )

0 . 2

5 0 ± 0 . 0

1 0

( 6 . 3

5 ± 0 . 3

)

2 . 7

5 0 ( 6 9 . 8

5 )

2 . 8

8 0 ( 7 3 . 1

5 )

0.128 dia(3.25)

0.040 dia(1.02)

Flanged case, down leaded

*Designator "V" required in Case Option position of model number.

1

2

3

4

5

6

12

11

10

9

8

7

Maximum dimensions: 3.005 x 1.505 (76.33 x 38.23 mm)Angled corner

indicates pin one.

3 . 0

0 5 ( 7 6 . 3

3 ) m a x

Weight: 86 grams maximum

Case dimensions in inches (mm)

Tolerance ±0.005 (0.13) for three decimal places±0.01 (0.3) for two decimal placesunless otherwise specified

CAUTIONHeat from reflow or wave soldering may damage the device. Solder pinsindividually with heat application not exceeding 300°C for 10 seconds per pin.

MaterialsHeader Cold Rolled Steel/Nickel/GoldCover Kovar/NickelPins #52 alloy/Gold, compresssion glas seal

Seal Hole: 0.120 ±0.002 (3.05 ±0.05)

Case V, Rev G, 2012.06.15Please refer to the numerical dimensions for accuracy.

Seam Seal

Figure 18: caSe V



SMFL Single and Dual DC/DC Converter Cases


SMFL Rev AA - 2012.03.19



Screening table 1: element eValuatiOn

dc-dc conVerterS PrototyPe, cLaSS h and cLaSS K,

MiL-PrF-38534 eLeMent eVaLuation non-QML 1 QML

PrototyPe cLaSS h cLaSS K

coMPonent-LeVeL teSt PerForMed

/o /h /K

M/S 2 M/S 2 P 3 M/S 2 P 3

Element Electrical n n n n n

Visal n n n n

Internal Visal n n

Temperatre Cyclin n n

Constant Acceleration n n

Interim Electrical n

Brn-in n

Post Brn-in Electrical n

Steady State Life n

Voltae Conditionin Ain n

Visal Inspection n

Final Electrical n n n n

Wire Bond Evalation n n n n

SEM n

Notes:1. Non-QML prodcts may not meet all of the reqirements of MIL-PRF-38534.2. M/S = Active components (Microcircit and Semicondctor Die)3. P = Passive components, Class H and K element evalation. Not applicable to Space Prototype (“O”) element evalation.

Definitions:Element Evalation: Component testin/screenin per MIL-STD-883 as determined by MIL-PRF-38534SEM: Scannin Electron Microscopy





SMFL Rev AA - 2012.03.19



Screening table 2: enVirOnmental Screening

Table is for reference only. See individal Series datasheets for specific screenin.

dc-dc conVerterS PrototyPe, cLaSS h and cLaSS K

MiL-PrF-38534 enVironMentaL Screening and rha1 P or r

non-QML 2 QML 3

PrototyPe cLaSS h cLaSS K

teSt PerForMed /oo /hP /hr /KP /Kr

n- w , m 2023 n 4 n 4 n n

p- i, m 2017, 2032 n n n n n

t c (10 )

Method 1010, Cond. C, -65°C to +150°C, ambient n n n n n

c a

Method 2001, 3000 (Qal 5000 ) n n n n n

pind, t m 2020, c. a n 4 n 4 n n

p - , g a, s 1 4 n n 4 n 4 n n

b- m 1015, +125°c , 5

96 hors n

160 hors n n

2 160 hors (incldes mid-BI test) n n

F e t, mil-prF-38534, g a,

Sbrops 1 and 4: +25°C case n

Sbrops 1 throh 6, -55°C, +25°C, +125°C case n n n n

h tgross Leak, Method 1014 n n n n n

Fine Leak, Method 1014 n n n n n

r, m 2012 n n

p r e t, +25°c n 4 n 4

F v , m 2009 n n n n n

rha p: 30 (s) n n

rha r: 100 (s) n n

see let 40 mV-2 / n n n n

Test methods are referenced to MIL-STD-883 as determined by MIL-PRF-38534.

Notes:1. Or Redmond facility has a DLA approved RHA plan for Interpoint power

prodcts. Or SMD prodcts with RHA “P” or “R” code meet DLA reqirements.2. “OO” prototypes are non-QML prodcts and may not meet all of the reqirements

of MIL-PRF-38534. “O” in the RHA desinator position in Interpoint modelnmbers indicates DLA RHA “-” defined as no RHA.

3. All processes are QML qalified and performed by certified operators.4. Not reqired by DLA bt performed to assre prodct qality.5. Brn-in temperatre desined to brin the case temperatre to +125°C minimm.

Brn-in is a powered test.


SMFL Sinle and Dal, SMFL Rev AA - 2012.03.19. This revision spersedes all previos releases. All technical information is believed to be accrate,bt no responsibility is assmed for errors or omissions. Crane Electronics, Inc. reserves the riht to make chanes in prodcts or specificationswithot notice. SMFL Series is a trademark of Crane Electronics, Inc. Copyriht © 1999 - 2013. Crane Electronics, Inc. All rihts reserved.www.craneae.com/interpoint

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