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? hybrid-high reliability 1mega-rad hardened dc-dc converter arm arm28xxt series description the arm series of three out put dc-dc converters are designed specifically for use in the high-dose radiation environments encountered during deep space planetary missions. the extremely high level of radiation tolerance inherent in the arm design is assured as a result of extensive research, thorough analysis and testing, careful selection of components and lot verification testing of finished hybrids. many of the best circuit desi gn features characterizing earlier ir hirel products have been incorporated into the arm topology. capable of uniformly high performance through long term exposures in radiation intense environments, this series sets the standard for distributed power systems demanding high performa nce and reliability. the arm converters are hermetically sealed in a rugged, low profile package utilizing copper core pins to minimize resistive dc losses. long-term hermetically is assured through use of parallel seam welded lid attachment along with ir hirel rugged ceramic pin-to-package seal. axial lead orientation facilitates prefe rred bulkhead mounting to the principal heat-dissipating surface. manufactured in a facility fully qualified to mil-prf- 38534, these converters are fabricated utilizing dla land and maritime qualified processes. for available screening options, refer to device screening table in the data sheet. variations in electrical, mechanical and screening specifications can be accommodated. contact ir hirel san jose for special requirements. ? 1 2016-07-01 pd-94530c 28v input, triple output features ? ? total dose > 1 mrads(si) ? ? see hardened to let up to 83 mev . cm 2 /mg ? ? de-rated per mil-std-975 & mil-std-1547 ? ? output power range 3 to 30 watts ? ? 19 to 50 volt input range ? ? input under voltage lockout ? ? high electrical efficiency > 80% ? ? full performance from -55c to +125c ? ? continuous short circuit protection ? ? 12.8 w/in 3 output power density ? ? true hermetic package ? ? external inhibit port ? ? externally synchronization ? ? fault tolerant design ? ? 5v, 12v or 5v, 15v outputs available
arm28xxt series (28v input, triple output) 2 2016-07-01 specifications absolute maximum ratings ? recommended operating conditions ?? ? input voltage range -0.5v dc to +80v dc input voltage range +19v dc to +60v dc +19v to +50v for full de-rating to mil-std-975 minimum output current 5% maximum rated current, any output output power 3.0w to 30w soldering temperature 300c for 10 seconds -55c to +125c storage case temperature -65c to +135c -55c to +85c for full de-rating to mil-std-975 operating case temperature static characteristics -55c t case +125c, v in = 28v dc , c l = 0, unless otherwise specified . for notes to electrical performance characteristics, refer to page 3 parameter symbol test conditions limits min. max. output voltage accuracy v out i out = 1.5adc, t c = +25c (main) i out = 250madc, t c = +25c arm2812 (dual) i out = 250madc, t c = +25c arm2815 (dual) 4.95 11.50 14.50 5.05 12.50 15.15 v dc output power note 5 p out 19 v dc < v in < 50v dc 3.0 30 w output current note 5 i out (main) 19 v dc < v in < 50v dc (dual) 150 75 3000 750 madc line regulation note 3 vr line 150 madc < i out < 3000 madc (main) 19 vdc< v in < 50vdc 75 madc < i out < 750 madc (dual) -15 -60 +15 +60 mv load regulation note 4 vr load 150 madc < i out < 3000 madc (main) 19 v dc < v in < 50v dc 75 madc < i out < 750 madc (dual) -180 -300 +180 +300 mv cross regulation note 8 vr cross (main) 19 v dc < v in < 50v dc (dual) -10 -500 +10 +500 mv total regulation v r all conditions of line, load, (main) cross regulation, aging, temperature and radiation arm2812 (dual) arm2815 (dual) 4.8 11.1 13.9 5.2 12.9 16.0 v input current i in i out = minimum rated, pin 3 open pin 3 shorted to pin 2 (disabled) 250 8.0 ma unit output ripple voltage note 6 v rip 19 v dc < v in < 50v dc i out = 3000 madc (main), 500 madc (dual) 100 mv p.p input ripple current note 6 i rip 19 v dc < v in < 50v dc i out = 3000 madc (main), 500 madc (dual) 150 ma p.p switching frequency f s synchronization input open. (pin 6) 225 275 khz efficiency e ff i out = 3000 madc (main), 500 madc (dual) 80 % enable input open circuit voltage drive current (sink) voltage range 19v dc < v in < 50v dc 3.0 0.1 -0.5 5.0 50.0 v ma v
arm28xxt series (28v input, triple output) 3 2016-07-01 static characteristics (continued) -55c t case +125c,v in = 28v dc , c l =0, unless otherwise specified . parameter symbol test conditions limits unit min. max. synchronization input frequency range pulse high level pulse low level pulse rise time pulse duty cycle external clock signal on sync. input (pin 4) 225 4.5 -0.5 40 20 310 10.0 0.25 80 khz v v v/? s % power dissipation, load fault p d short circuit, any output 7.5 w output response to step load changes notes 7, 11 v tld 10% load to/from 50% load 50% load to/from 100% load -200 -200 200 200 mv pk recovery time from step load changes notes 11, 12 t tld 10% load to/from 50% load 50% load to/from 100% load 200 200 ? s output response to step line changes notes 10, 11 v tln i out = 3000 madc (main) v in = 19 v to/from 50 v i out = 500 madc (dual) -350 -1050 350 1050 mv pk recovery time from step line changes notes 10, 11,13 t tln i out = 3000 madc (main) v in = 19 v to/from 50 v i out = 500 madc (dual) 500 500 ? s turn on overshoot v os (main) i out = minimum and full rated (dual) 500 1500 mv turn on delay note 14 t dly i out = minimum and full rated 5.0 20 ms capacitive load notes 9, 10 c l (main) no effect on dc performance (dual) 500 100 f isolation i so 500v dc input to output or any pin to case (except pin 12) 100 m ? notes to specifications 1. operation outside absolut e maximum/minimum limits may cause permanent damage to the device. ext ended operation at the limits may permanently degrade pe rformance and affect reliability. 2. device performance specified in electrical performance tabl e is guaranteed when operated with in recommended limits. operatio n outside recommended limits is not specified. 3. parameter measured from 28v to 19 v or to 50v while loads remain fixed. 4. parameter measured from nominal to minimum or maximum load conditions while line remains fixed. 5. up to 750 ma is available from each of the dual out puts provided the total output power does not exceed 30w. 6. guaranteed for a bandwidth of dc to 20 mh z.tested using a 20 khz to 2 mhz bandwidth. 7. load current is stepped for output under test wh ile other outputs are fixed at half rated load. 8. load current is fixed for output under test while other output loads are varied for any combination of minimum to maximum. 9. a capacitive load of any value from 0 to the specified maximum is permitted without compromise to dc performance. a capaciti ve load in excess of the maximum limit may interfere with the pr oper operation of the converter?s short circuit protection, causi ng erratic behavior during turn on. 10. parameter is tested as part of design characterization or a fter design or process changes. thereafter, parameters shall be guaranteed to the limits sp ecified in the table. 11. load transient rate of change, di/dt ?? 2 a/s. 12. recovery time is measured from the initiation of the transient to where v out has returned to within 1% of its steady state value. 13. line transient rate of change, dv/dt ? 50 v/s. 14. turn on delay time is for either a step application of input power or a logical low to high transition on the enable pin (pin 3) while power is present at the input.
arm28xxt series (28v input, triple output) 4 2016-07-01 group a tests v in = 28v, c l = 0 unless otherwise specified. parameter symbol test conditions group a subgroups limits min. max. output voltage accuracy v out i out = 1.5 a dc (main) i out = 250madc arm2812(dual) i out = 250madc arm2815(dual) 1, 2, 3 1, 2, 3 1, 2, 3 4.95 11.70 14.50 5.05 12.30 15.15 v output power note 1 p out v in = 19 v, 28v, 50 v 1, 2, 3 3.0 30 w output current note 1 i out (main) v in 19 v, 28v, 50 v (dual) 1, 2, 3 1, 2, 3 150 75 3000 500 ma output regulation note 4 v r i out = 150, 1500, 3000ma dc (main) v in = 19 v, 28v, 50 v i out = 75, 310, 625ma dc 2812 (dual) i out = 75, 250, 500ma dc 2815 (dual) 1, 2, 3 1, 2, 3 1, 2, 3 4.8 11.1 14.0 5.2 12.9 15.8 v input current i in i out = minimum rated, pin 3 open pin 3 shorted to pin 2 (disabled) 1, 2, 3 1, 2, 3 250 8.0 ma output ripple note 2 v rip v in = 19 v, 28v, 50 v i out = 3000ma main, 500ma (dual) 1, 2, 3 100 mv p-p input ripple note 2 i rip v in = 19 v, 28v, 50 v i out = 3000ma main, 500ma (dual) 1, 2, 3 150 ma p-p switching frequency f s synchronization pin (pin 6) open 4, 5, 6 225 275 khz efficiency e ff i out = 800ma main, 500ma (dual) 1 2, 3 80 78 % power dissipation, load fault p d short circuit, any output 1, 2, 3 7.5 w unit output response to step load changes notes 3, 5 v tl 10% load to/from 50% load 50% load to/from 100% load 4, 5, 6 4, 5, 6 -200 -200 200 200 mv pk recovery time from step load changes notes 5, 6 t tl 10% load to/from 50% load 50% load to/from 100% load 4, 5, 6 4, 5, 6 200 200 s turn on overshoot v os (main) i out = minimum and full rated (dual) 4, 5, 6 4, 5, 6 500 1500 mv turn on delay note 7 t dly i out = minimum and full rated 4, 5, 6 5.0 20 ms isolation i so 500v dc input to output or any pin to case (except pin 12) 1 100 m ? for notes to group a tests, refer to page 5.
arm28xxt series (28v input, triple output) 5 2016-07-01 notes to group a test table 1. parameter verified during dynamic load regulation tests. 2. guaranteed for dc to 20 mhz bandwidth. test conducted using a 20 khz to 2 mhz bandwidth. 3. load current is stepped for output under test wh ile other outputs are fixed at half rated load. 4. each output is measured for all combinations of line and load . only the minimum and maximum readings for each output are re corded. 5. load step transition time ?? 10s. 6. recovery time is measured from the initiation of the transient to where v out has returned to within 1% of its steady state value. 7. turn on delay time is tested by application of a logical lo w to high transition on the enable pin (pin 3) with power presen t at the input. 8. subgroups 1 and 4 are performed at +25oc, subgroups 2 and 5 at - 55oc and subgroups 3 and 6 at +125oc. radiation performance the radiation tolerance characteristics inherent in the arm28xxt converter are based on the results of the ground-up design effort on the art2800t program and started with specific radiation design goals. by imposing sufficiently large margins on those electrical parameters subject to the degrading effects of radiation, appropriate elements were selected for incorporation into the art2800t circuit. known radiati on data was utilized for input to pspice and rad spice in the generation of circuit performance verification analyses. thus, electrical performance capability under all environmental condit ions including radiation was well understood before first application of power to the inputs. the principal art2800t design goal was a converter topology, which because of large design margins, had radiation performance essentially independent of wafer-lot radiation performance variations. radiation tests on random art2800t manufactu ring lots provide continued confirmation of the soundness of the desi gn goals as well as justification for the element selection cri teria. to achieve the radiation levels specified for the arm28xxt, the art2 800t topology is utilized as the basis but lot assurance testing is utilized as part of the screening process to assure the specified level. each arm28xxt converter is delivered with lot test data at the hybrid level supporting t he minimum tid specification. ot her radiation specifications are assured by design and generic data are available on request. the following table specifies guaranteed minimum radiation exposure levels tolerated while maintaining specification limits. radiation specification tcase = 25c parameter condition min typ max unit total ionizing dose (2 :1 margin) mil-std-883, method 1019.4 operating bias applied during exposure 1,000 krads (si) heavy ion (single event effects) bnl dual van de graf generator 83 mev cm 2 /mg dose rate temporary saturation survival mil-std-883, method 1021 1e8 1e11 rads(si)/sec neutron fluence mil-std-883, method 1017.2 3e12 neutron/cm 2 ir hirel currently does not have a dla cert ified radiation hardness assurance program. standard quality conformance inspectio ns on arh28xxxxs series (flight screened) inspection application samples group a part of screening on each unit 100% group b each inspection lot * 5 units group c first inspection lot or following class 1 change 10 units group d in line (part of element evaluation) 3 units * group b quantity for option 2 end of line qci. no group b samples required for option 1, in-line.
arm28xxt series (28v input, triple output) 6 2016-07-01 fig i. block diagram circuit operation and application information the arm28xxt series of converters have been de- signed using a single ended forward switched mode con- verter topology. (refer to figure i.) single ended topologies enjoy some advantage in radiation hardened designs in that they elimi- nate the possibility of simultaneous turn on of both switching ele- ments during a radiation induced upset; in addition, single ended topologies are not subject to transformer saturation prob- lems often associated with double ended implementa- tions. the design incorporates an lc input filter to attenuate input ripple current. a low overhead linear bias regulator is used to provide bias voltage for the converter primary control logic and a stable, well regulated reference for the error amplifier. output control is realized using a wide band discrete pulse width modulator control circuit incorporating a unique non-linear ramp generator circuit. this circuit helps stabilize loop gain over variations in line voltage for superior output transient response. no minal conversion frequency has been selected as 250 khz to maximize efficiency and minimize magnetic element size. output voltages are sensed using a coupled inductor and a patented magnetic feedback circuit. this circuit is relatively insensitive to variations in temperature, aging, radiation and manufacturing tolerances making it particularly well suited to radiation hardened designs. the control logic has been designed to use only radiation tolerant components, and all current paths are limited with series resistance to limit photo currents. other key circuit design features include short circuit protection, under voltage lockout and an external synchronization port permitting operation at an externally set clock rate. operating guidelines the circuit topology used for regulating output voltages in the arm28xxt series of converters was selected for a number of reasons. significant among these is the ability to simultaneously provide adequate regulation to three output voltages while maintaining modest circuit complexity. these attributes were fundamental in retaining the high reliability and insensitivity to radiation that characterizes device performance. use of this topology dictates that the user maintain the minimum load specified in the electrical tables on each output. attempts to operate the converter without a load on any output will result in peak charging to an output voltage well above the specified voltage regulation limits, potentially in excess of ratings, and should be avoided. output loads that are less than specification minimums will result in regulation performance outside the limits presented in the tables. in most practical applications, this lower bound on the load range does not present a serious constraint; however the user should be mindful of the results. characteristic curves illustrating typical regulation perf ormance are show n in figures vii, viii and ix. thermal considerations the arm series of converters is capable of providing relatively high output power from a package of modest volume. the power density exhibited by these devices is obtained by combining high circuit efficiency with effective methods of heat removal from the die junctions. good design practices have effectively addressed this requirement inside the device. however when operating at maximum loads, significant heat generated at the die junctions must be carried away by conduction from the base. to maintain case temperature at or below the specified maximum of 125c, this heat can be transferred by attachment to an appropriate heat dissipater held in intimate contact with the converter base-plate.
arm28xxt series (28v input, triple output) 7 2016-07-01 effectiveness of this heat transfer is dependent on the intimacy of the baseplate-heatsink interface. it is therefore suggested that a heat transferring medium possessing good thermal conductivity is inserted between the baseplate and heat sink. a material utilized at the factory during testing and burn-in processes is sold under the trade name of sil-pad ? 400 1 .this particular product is an insulator but electrically conductive versions are also available. use of these materials assures optimum surface contact with the heat dissipater by compensating for minor surface variations. while other available types of heat conducting materials and thermal compounds provi de similar effectiveness, these alternatives are often less convenient and are frequently messy to use. a conservative aid to estimating the total heat sink surface area (a heat sink) required to set the maximum case temperature rise ( ? t) above ambient temperature is given by the following ex- pression: where as an example, assume that it is desired to maintain the case temperature of an ARM2815T at +65c or less while operating in an open area whose ambient temperature does not exceed +35c; then ???????????????????????? t = 65 - 35 = 35c from the specification table, the worst case full load efficiency for this device is 80%; therefore the maximum power dissipation at full load is given by and the required heat sink area is 1 sil-pad is a registered trade mark of bergquist, minneapolis, mn thus, a total heat sink surface area (including fins, if any) of approximately 32 in 2 in this example, would limit case rise to 35c above ambient. a flat aluminum plate, 0.25" thick and of approximate dimension 4" by 4" (16 in 2 per side) would suffice for this application in a still air environment. note that to meet the criteria, bot h sides of the plate require unrestricted exposure to the ambient air. inhibiting converter output fig. ii. enable input equivalent circuit synchronization as an alternative to application and removal of the dc voltage to the input, the user can control the converter output by providing an input referenced, ttl compatible, logic signal to the enable pin 3. this port is internally pulled ?high? so that when not used, an open connection on the pin permits normal converter operation. when inhibited outputs are desired, a logical ?l ow? on this port will shut the converter down. an open collector device capable of sinking at least 100 a connected to enable pin 3 will work well in this application. a benefit of utilization of the enable input is that following initial charge of the input capacitor, subsequent turn-on commands will induce no uncontrolled current inrush. a heat sink ? ? ? ? ? ? ? ? ? ? t p 80 594 085 143 . . . ? t pp eff out ? ??? ? ? ? ? ? ? case temperature rise above ambient device dissipation in watts 1 1 ?? p ?? ? ? ? ? ? ? ? ?? ? 30 1 80 13002575 . ..w a = 35 80 7.5 in heat sink 0.85 ? ? ? ? ? ? ? ?? ? 143 2 594 318 . .. 5k 2n2907a 150k enable input input return 150k 2n2222a 2n2222a v in 64k 186k 150k 5.6 v converter inhibit is initiated when this transistor is turned off when using multiple converters, system requirements may dictate operating severa l converters at a common system frequency. to accommodate this requirement, the arm28xxt type converter provides a synchronization input port (pin 4). circuit topolo gy is as illustrated in fig. iii. the sync input port permits synchronization of an arm converter to any compatible external frequency source operating in the band of 225 to 310 khz. the synchronization input is edge triggered with synchronization initiated on the negative transition. this input signal should be a negative going pulse referenced to the input return and have a 20% to 80% duty cycle. compatibility requires the negative transition time to be less than 100 ns with a minimum pulse amplitude of +4.25 volts referred to the input return. in the event of failure of an external synchronization source, the converter will revert to its own internally set frequency. when external synchronization is not desired, the sync in port may be left open (unconnected) permitting the converter to operate at its? own internally set frequency.
arm28xxt series (28v input, triple output) 8 2016-07-01 output short circuit protection input under voltage protection a minimum voltage is required at the input of the converter to initiate operation. this voltage is set to a nominal value of 16.8 volts. to preclude the possibility of noise or other variations at the input falsely initiating and halting converter operation, a hysteresis of approximately 1.0 volts is incorporated in this circuit. the converter is guaranteed to operate at 19 volts input under all specified conditions. input filter protection against accidental short circuits on any output is provided in the arm28xxt converters. this protection is implemented by sensing primary switching current and, when an over-current condition is detected, switching action is terminated and a restart cycle is initiated. if the short circuit condition has not been cleared by the time the restart cycle has completed, another restart cycle is initiated. the sequence will repeat until t he short circuit condition is cleared at which time the converter will resume normal operation. the effect is that during a shorted condition, a series of narrow pulses are generated at approximately 5% duty cycle which periodica lly sample the state of the load. thus device power dissipation is greatly reduced during this mode of operation. fig. iii. synchronization input equivalent circuit parallel operation although no special provision for forced current sharing has been incorporated in the arm28xxt series, multiple units may be operated in parallel for increased output power applications. the 5 volt outputs will typically share to within approximately 10% of their full load capability and the dual (15 volt) outputs will typically share to within 50% of their full load. load sharing is a function of the individual impedance of each output and the converter with the highest nominal set voltage will furnish the predominant load current. additional filtering to attenuate input ripple current, the arm28xxt series converters incorporate a single stage lc input filter. the elements of this filter comp rise the dominant input load impedance characteristic, and therefore determine the nature of the current inrush at turn-on.the input filter circuit elements are as shown in fig. iv. fig. iv. input filter circuit although internal filtering is provided at both the input and output terminals of the arm2800 series, additional filtering may be desirable in some applications to accommodate more stringent system requirements. while the internal input filter of fig. iv keeps input ripple current below 100 map-p, an extern al filter is available that will further attenuate this ripple content to a level below the ce03 limits imposed by mil-std-461b. fig. v is a general diagram of the advanced analog arf461 filter module designed to operate in conjunction with the arm2800 series converters to provide that attenuation. 5k 2n2907a 5k 47pf sync input input retur n +10v + input input return 3.6 h 5.4 fd 10 ? fig. v. arf461 input emi filter this circuit as shown in fig. v is constructed using the same quality materials and processes as those employed in the arm2800 series converters and is intended for use in the same environments. this filter is fabricated in a complementary package style whose output pin configuration allows pin to pin connection between the filter and the converter. more complete information on this filter can be obtained from the arf461 data sheet.
arm28xxt series (28v input, triple output) 9 2016-07-01 an external filter may also be added to the output where circuit requirements di ctate extremely low output ripple noise. the output filter described by fig.vi has been characterized with the ARM2815T using the values shown in the associated materia l list. it is important to be aware that when filtering high frequency noise, parasitic circuit elements can easily dominate filter per formance. therefore, it is incumbent on the designer to exercise care when preparing a circuit layout for such devices. wire runs and len gths should be minimized, high frequency loops should be avoided and careful attention paid to the construction details of magnetic circuit elements. tight magnetic coupling will improve overall magnetic performance and reduce stray magnetic fields. measurement techniques can impose a significant influence on results. all noise measurements should be measured with test leads as close to the device output pins and as short as physically possible. probe ground leads should be kept to a minimum length. fig. vi. external output filter +5 v 5v return +15v 15v return -15v +5v out +5v return +15v out 15v return -15v out c1 c2 c3 c4 c5 c6 c7 c8 l1 l2 l4 l3 l1 7 turns awg21 bifilar on mag inc. core pn yj-41305-tc or equiv alent. l2 7 turns awg24 trifilar on mag inc. core pn yj-41305-tc or equiv alent. l3 4 turns awg21 on mag inc. core pn mpp55048 or equiv alent. l4 5 turns awg21 bifilar on m ag inc. core pn m pp55048 or equiv alent. c1-c5 2200pf type ckr ceramic capacitor. c6 170f, 15v m39006/22-0514 tantalum. c7,c8 25f, 50v m39006/22-0568 tantalum.
arm28xxt series (28v input, triple output) 10 2016-07-01 performance characteristics (typical @ 25c) fig. vii. efficiency vs output power for three line voltages. fig. viii. 5 v output regulation limits including all conditions of line, load and cross regulation. 50 55 60 65 70 75 80 85 0 5 10 15 20 25 30 35 output power (watts) efficiency (%) 18v 28v 50v 4.7 4.8 4.9 5.0 5.1 5.2 0.0 0.5 1.0 1.5 2.0 2.5 3.0 output current (amps) output voltag e upper limit lower limit
arm28xxt series (28v input, triple output) 11 2016-07-01 performance characteristics (typical @ 25c) (continued) fig. ix. 15 v regulation curves for three conditions of load on the 5 volt output. fig. x. cross regulation curves 5 volt output as a function of 15 vo lt load current for three 5 volt loads. 14.0 15.0 16.0 17.0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 output current (each output) output voltage (magnitude) 5v load = 3.0a 5v load = 1.5a 5v load = 150 ma 4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 0 0.1 0.2 0.3 0.4 0.5 0.6 15 volt load current output voltage 5v load = 150ma 5v load = 1.5a 5v load = 3.0a
arm28xxt series (28v input, triple output) 12 2016-07-01 pin designation mechanical outline ? pin # designation pin # designation 1 + input 8 nc 2 input return 9 -12 / -15v dc output 3 enable 10 +12 /+15v dc output return 4 sync in 11 +12 / +15v dc output 5 nc 12 chassis 6 13 +5v dc output 7 14 output return 54321 8 9 10 11 12 13 14 2.400 1.400 2.700 0.150 3.25 ref. ma x 6 x 0.200 = 1.200 1.675 2.200 0.300 0.263 ? 0.136 - 6 holes 0.375 1.950 0.138 0.500 ma x mounting plane 0.040 pin dia. 0.050 flange 0.275 0.240 note: 1. dimensions are in inches. 2. base plate mounting plane flatness 0.003 maximum. 3. unless otherwise specified, tolerances are ? = 2 .xx = .01 .xxx = .005 4. device weight - 120 grams maximum. 5. materials: case: cold rolled steel cover: kovar pins: copper cored alloy 42 with ceramic insulators
arm28xxt series (28v input, triple output) 13 2016-07-01 device screening notes: ? best commercial practice. ? ck is a dla class k compliant without radiation performance. no suffix is a radiation rated device but not available as a dla qualified smd per mil-prf-38534. ? any engineering model (em) build with the ?em? suffix shall only be form, fit and functional equivalent to its flight model (fm) counterpart, and it may not meet the radiation performance. the em model shall not be expected comply with mil-prf-38534 flight qual ity/workmanship standards, and configurat ion control. an em build may use electrical equivalent commercial grade components. ir hirel will provide a list of non-compliance items upon request. part numbering requirement mil-std-883 method no suffix ? ck ? em ? temperature range ? -55c to +85 c -55c to +85c -55c to +85c element evaluation mil-prf- 38534 class k class k n/a non-destructive bond pull 2023 yes yes n/a internal visual 2017 yes yes ? temperature cycle 1010 cond c cond c cond c constant acceleration 2001, y1 axis 3000 gs 3000 gs 3000 gs pind 2020 cond a cond a n/a burn-in 1015 320 hrs @ 125c (2 x 160 hrs) 320 hrs @ 125c (2 x 160 hrs) 48 hrs @ 125c final electrical (group a) mil-prf-38534 & specification -55c, +25c, +85c -55c, +25c, +85c -55c, +25c, +85c pda mil-prf-38534 2% 2% n/a seal, fine and gross 1014 cond a, c cond a, c cond a radiographic 2012 yes yes n/a external visual 2009 yes yes ? ir hirel headquarters: 101 n. sepulveda blvd., el segundo, california 90245, usa tel: (310) 252-7105 ir hirel leominster: 205 crawford st., leominster, massac husetts 01453, usa tel: (978) 534-5776 ir hirel san jose: 2520 junction avenue, san jose, california 95134, usa tel: (408) 434-5000 data and specifications subject to change without notice.
arm28xxt series (28v input, triple output) 14 2016-07-01 important notice the information given in this document shall be in no event regarded as guarantee of conditions or characteristic. the data contained herein is a characterization of the co mponent based on internal standards and is intended to demonstrate and provide guidance for typical part performan ce. it will require further evaluation, qualification and analysis to determine suitability in the application environm ent to confirm compliance to your system requirements. with respect to any example hints or any typical values stat ed herein and/or any information regarding the application of the product, infineon technologies hereby disclaims any and a ll warranties and liabilities of any kind including without limitation warranties on non- infringement of inte llectual property rights and any third party. in addition, any information given in this document is subject to customer?s compliance with its obligations stated in this document and any applicable legal requirements, norms and standards concerning customer ?s product and any use of the product of infineon technologies in customer?s applications. the data contained in this document is exclusively intended fo r technically trained staff. it is the responsibility of any customer?s technical departments to evaluate the suitab ility of the product for the intended applications and the completeness of the product information given in this document with respect to applications. for further information on the product, technology, delivery terms and conditions and prices, please contact your local sales representative or go to ( www.infineon.com/hirel). warning due to technical requirements products may contain dangerou s substances. for information on the types in question, please contact your nearest infineon technologies office.

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