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kdc_CRE1.d02 page 1 of 14 selection guide order code 1 nominal input voltage output voltage output current load regulation ripple & noise input current at rated load effciency isolation capacitance mttf 2 v v ma % mv p-p ma % pf mil. tel. typ. max. typ. max. min. typ. khrs CRE1s0505dc 5 5 200 12 14 16 40 286 65 70 30 CRE1s0505sc 5 5 200 12 14 16 40 286 65 70 30 CRE1s0515sc 5 15 67 6 7.5 10 25 250 77 80 40 CRE1s1205sc 12 5 200 8 10 12 30 117 68 71 33 CRE1s1212sc 12 12 83 4 5 8 20 104 75 80 55 CRE1s2405sc 24 5 200 8.5 10 13 30 58 67 71 40 CRE1s2412sc 24 12 83 3 4 10 25 52 75 80 78 3kvdc isolation options CRE1s0305s3c 3.3 5 200 10 12 15 25 400 72 75 35 CRE1s0505s3c 5 5 200 6 8 15 25 250 73 77 24 surface mount options CRE1s0505mc 5 5 200 12.8 15 62 85 294 68 35 6857 CRE1s0505mec 5 5 200 6.5 8 25 70 239 79 82 22 3041 input characteristics parameter conditions min. typ. max. units voltage range continuous operation, 3.3v input types 2.97 3.3 3.63 v continuous operation, 5v input types 4.5 5.0 5.5 continuous operation, 12v input types 10.8 12 13.2 continuous operation, 24v input types 21.6 24 26.4 refected ripple current 3.3v & 12v input types 1 15 ma p-p 5v & 24v input types 2 15 CRE1s0505mc 30 47 CRE1s0505mec 5 15 output characteristics parameter conditions min. typ. max. units rated power t a =-40c to 85c 3 1 w voltage set point accuracy see tolerance envelope line regulation high v in to low v in 1.1 1.2 %/% isolation characteristics parameter conditions min. typ. max. units isolation test voltage c versions flash tested for 1 second 1000 vdc 3c versions flash tested for 1 second 3000 resistance viso= 1000vdc 10 g? general characteristics parameter conditions min. typ. max. units switching frequency 3.3v input types 115 khz 5v input types 110 12v input types 145 24v input types 100 CRE1s0505mec 80 1. if components are required in tape and reel format suffx order code with -r, e.g. CRE1s0505mc-r. 2. calculated using mil-hdbk-217 fn2 and telcordia sr-332 calculation model with nominal input voltage at full load. 3. ul 60950 recognition does not apply to CRE1s0505mc. 4. 24v input parts prior to date code d1635 have operating temperature range of 0 to 70c. all specifcations typical at t a =25c, nominal input voltage and rated output current unless otherwise specifed. product overview the CRE1 series are a cost effective 1w dc-dc converter series, in industry standard packages with industry standard pinout. popular input and output voltages are available. the galvanic isolation allows the device to be confgured to provide an isolated negative rail in systems where only positive rails exist. the wide temperature range guarantees startup from C40c and full 1 watt output at 85c 3 . features n ul 60950 recognised 3 n single isolated output n 1kvdc or 3kvdc option hi pot test n wide temperature performance at full n 1w load -40c to 85c 4 n industry standard pinout n 3.3v, 5v, 12v & 24v inputs n 5v, 12v & 15v outputs n pin compatible with cme, crl2, lme, mee1, mee3, mte1, nke, nme, nml & nte series n through hole and surface mount options n available CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com www.murata-ps.com/support for full details go to www.murata-ps.com/rohs
kdc_CRE1.d02 page 2 of 14 temperature characteristics parameter conditions min. typ. max. units specifcation all output types 1 -40 85 c storage -50 130 case temperature rise above ambient 5v output types 41 all other output types 32 CRE1s0505mc 43 CRE1s0505mec 12.5 cooling free air convection technical notes isolation voltage hi pot test, flash tested, withstand voltage, proof voltage, dielectric withstand voltage & isolation test voltage are all terms that relate to the same thing, a test voltage, applied for a specifed time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. murata power solutions CRE1 series of dc-dc converters are all 100% production tested at their stated isolation voltage. this is 1kvdc for 1 second for c versions and 3kvdc for 1 second for 3c versions. a question commonly asked is, what is the continuous voltage that can be applied across the part in normal operation? the CRE1 series, through hole variants (excluding surface mount variants) have been recognised by underwriters laboratory for functional insulation, both input and output should normally be maintained within selv limits i.e. less than 42.4v peak, or 60vdc. the isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. the part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according to safety standard requirements. repeated high-voltage isolation testing it is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials, construction and environment. the CRE1 series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enamelled wire. while parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. any material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. we therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from specifed test voltage. this consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. safety approval the CRE1 series has been recognised by underwriters laboratory (ul) to ul60950 for functional insulation in a maximum still air ambient temperature of 100c for the c versions and 130c for the 3c versions as measured on the case of the unit (hotspot). the CRE1s0505mc is not currently ul recognised. the CRE1 series of converters are not internally fused so to meet the requirements of ul60950 an anti-surge input line fuse should al ways be used with ra tings as defned belo w. CRE1s03xxs3c: 1a CRE1s05xxxxc: 0.7a CRE1s12xxsc: 0.2a CRE1s24xxsc: 0.16a all fuses should be ul recognised, 125v rated. file number e151252 applies. absolute maximum ratings lead temperature 1.5mm from case for 10 seconds 260c input voltage v in , 3.3v input 5.5v input voltage v in , 5v input 7v input voltage v in , 12v input 15v input voltage v in , 24v input 28v 1. 24v input parts prior to date code d1635 have operating temperature range of 0 to 70c. CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com/support
kdc_CRE1.d02 page 3 of 14 efficiency vs load 3.3v inputs 5v inputs 12v inputs 24v inputs 0 10 20 30 40 50 60 70 80 90 0 10 20 30 40 50 60 70 80 90 100 efficiency (%) load (%) CRE1s0305s3c CRE1s0305s3c 0 10 20 30 40 50 60 70 80 90 0 10 20 30 40 50 60 70 80 90 100 efficiency (%) load (%) CRE1s0505xc CRE1s0515sc CRE1s0505s3c CRE1s0505mc CRE1s0505mec 0 10 20 30 40 50 60 70 80 90 0 10 20 30 40 50 60 70 80 90 100 efficiency (%) load (%) CRE1s1205sc CRE1s1212sc 0 10 20 30 40 50 60 70 80 90 0 10 20 30 40 50 60 70 80 90 100 efficiency (%) load (%) CRE1s2405sc CRE1s2412sc temperature derating graph - surface mount & 3c types 150 100 50 0 -40 0 1.0 safe operating area 85c ambient temperature ( c) output power ( w) temperature derating graph - all other types 1 150 100 50 0 -40 0 1.0 safe operating area 85c ambient temperature ( c) output power ( w) 1. 24v input parts prior to date code d1635 ha ve operating temperature range of 0 to 70c. 120c CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com/support
kdc_CRE1.d02 page 4 of 14 tolerance envelopes the voltage tolerance envelope shows typical load regulation characteristics for this product series. the tolerance envelope is the maximum output voltage variation due to changes in output loading. CRE1s0505xc CRE1s0515sc CRE1s1205sc CRE1s1212sc CRE1s2405sc CRE1s2412sc 10% 6% 7% 3% output load current (%) output load current (%) output voltage output voltage -6% -3% 0% 0% 100 100 75 75 50 50 25 25 10 10 7% output load current (%) -6% 1% 100 75 50 25 10 3% output load current (%) -1% 2% 100 75 50 25 10 output voltage output voltage 2% 5% 8% -3% 1% 100 75 50 25 10 output voltage 5% output load current (%) 2% -4% -1% 100 75 50 25 10 output voltage 0% output load current (%) CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com/support
kdc_CRE1.d02 page 5 of 14 tolerance envelopes (continued) CRE1s0305s3c CRE1s0505s3c CRE1s0505mc CRE1s0505mec 9% -5% 0% 100 75 50 25 10 output voltage 6% output load current (%) 7% -3% 1% 100 75 50 25 10 output voltage 3% output load current (%) 10% -8% 3% 100 75 50 25 10 output voltage 0% output load current (%) 7% -4% 2% 100 75 50 25 10 output voltage 3% output load current (%) rohs compliance and msl information the through hole parts (sip/dip) in this series are compatible with rohs soldering systems with a peak wave solder temperature of 260c for 10 seconds. the pin termination fnish on the sip package type is tin plate, hot dipped over matte tin with nickel preplate. the dip types are matte tin over nickel preplate. this series is backward compatible with sn/pb soldering systems. the surface mount parts (mc/mec) in this series are compatible with rohs soldering systems as per j-std-020d.1 the pin termination fnish on the surface mount package types is matte tin over nickel preplate. this series is backward compatible with sn/pb soldering systems. the surface mount parts have a moisture sensitivity level (msl) 1. samples of the surface mount parts were tested in accordance with the conditioning described for msl level 1 in idc/j-std-020d.1. the products passed electrical tests and visual inspection criteria. f or further information, please visit www.murata-ps.com/rohs CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com/support
kdc_CRE1.d02 page 6 of 14 application notes minimum load the minimum load to meet datasheet specifcation is 10% of the full rated load across the specifed input voltage range. lower than 10% minimum loading will result in an increase in output voltage, which may rise to typically double the specifed output voltage if the output load falls to less than 5%. capacitive loading and start up typical start up times for this series, with a typical input voltage rise time of 2.2s and output capacitance of 10f, are shown in the table below. the product series will start into a capacitance of 47f with an increased start time, however, the maximum recommended output capacitance is 10f. typical start-up wave form start-up time s CRE1s0505dc 190 CRE1s0505sc 190 CRE1s0515sc 1790 CRE1s1205sc 125 CRE1s1212sc 500 CRE1s2405sc 135 CRE1s2412sc 430 CRE1s0305s3c 295 CRE1s0505s3c 165 CRE1s0505mc 1368 CRE1s0505mec 170 CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com/support
kdc_CRE1.d02 page 7 of 14 application notes (continued) ripple & noise characterisation method ripple and noise measurements are performed with the following test confguration. c1 1f x7r m ultilayer ceramic capacitor , voltage rating to be a minimum of 3 times the output voltage of the dc-dc converter c2 10f tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the dc-dc converter with an esr of less than 100m at 100 khz c3 100nf multilayer ceramic capacitor, general purpose r1 450 resistor, carbon flm, 1% tolerance r2 50 bnc termination t1 3t of the coax cable through a ferrite toroid rload resistive load to the maximum power rating of the dc-dc converter. connections should be made via twisted wires measured values are multiplied by 10 to obtain the specifed values. differential mode noise test schematic output ripple reduction by using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mv p-p max. component selection capacitor: it is required that the esr (equivalent series resistance) should be as low as possible, ceramic types are recommended. the voltage rating should be at least twice (except for 15v output), the rated output voltage of the dc-dc converter. inductor: the rated current of the inductor should not be less than that of the output of the dc-dc converter. at the rated current, the dc resistance of the inductor should be such that the voltage drop across the inductor is <2% of the rated voltage of the dc-dc converter. the srf (self resonant frequency) should be >20mhz. dc dc l c load power source inductor capacitor l, h smd through hole c, f CRE1s0505dc CRE1s0505sc CRE1s0515sc CRE1s1205sc CRE1s1212sc CRE1s2405sc CRE1s2412sc CRE1s0305s3c CRE1s0505s3c CRE1s0505mc 47 82473c 11r473c 4.7 CRE1s0505mec 10 82103c 11r103c 4.7 oscilloscope y input supply c1 c2 c3 r1 t1 r2 input output dc/dc converter r load + + - - CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com/support
kdc_CRE1.d02 page 8 of 14 emc filtering and spectra filtering the following table shows the additional input capacitor and input inductor typically required to meet en 55022 curve b quasi-peak emc limit, as shown in the following plots. the following plots show positive and negative quasi peak and cispr22 average limit b (pink line) and quasi peak limit b (green line) adherence limits.the below values are for guidance only and should be evaluated in the application circuit. for the CRE1s0505mec an input inductor is not required. inductor capacitor part number l, h smd through hole c, f rated voltage recommended part number CRE1s0505dc 4.7 82472c 13r472c 4.7 16vdc grm188z71c475me21 CRE1s0505sc 4.7 82472c 13r472c 4.7 16vdc grm188z71c475me21 CRE1s0515sc 4.7 82472c 13r472c 4.7 16vdc grm188z71c475me21 CRE1s1205sc 10 82103c 13r103c 1 50vdc grm21br71h105ka12 CRE1s1212sc 10 82103c 13r103c 1 50vdc grm21br71h105ka12 CRE1s2405sc 22 82223c 13r223c 10 50vdc grm32er71h106ma12 CRE1s2412sc 22 82223c 13r223c 10 50vdc grm32er71h106ma12 CRE1s0305s3c 10 82103c 13r103c 1 50vdc grm188r71c105ma12 CRE1s0505s3c 10 82103c 13r103c 1 50vdc grm188r71c105ma12 CRE1s0505mc 10 82103c 13r103c 4.7 16vdc grm188z71c475me21 CRE1s0505mec nr nr nr 22 10vdc grm32er71a226me20 CRE1s0505xc CRE1s0515sc CRE1s1205sc CRE1s1212sc dc dc c l 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) nr - not required CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com/support
kdc_CRE1.d02 page 9 of 14 emc filtering and spectra CRE1s2405sc CRE1s2412sc CRE1s0305s3c CRE1s0505s3c CRE1s0505mc CRE1s0505mec 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) 0 10 20 30 40 50 60 70 80 1.00e+05 1.00e+06 1.00e+07 1.00e+08 dbuv frequency (hz) CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com/support
kdc_CRE1.d02 page 10 of 14 package specifications 11.530.2 [0. 4540.008] 10.000.25 [0. 3940.010] 0.40 [0.016] min 4.100.5 [0. 1610.020] (1. 13 [0.0 44 ]) (2. 21 [0.0 87 ]) 6.10 +0. 15 -0. 20 [ 0.240 +0.0 06 -0.0 08 ] 2.54 [0. 100] 0.500.05 [0. 0200.002] 0.250.05 [0 . 0100.002] 1 2 3 4 s CRE1s xxxxsc xyyww all dimensions in mm (inches) controlling dimension is mm. all pins on a 2.54 (0.100) pitch and within 0.1 (0.004) of true position from pin 1 at seating plane s (sc&3c) all pins on a 2.54 (0.100) pitch and within 0.25 (0.010) of true position (dc) weight: 1.09g (3c) 1.30g (sc) 1.38g (dc) dc package pin connections dc - 8 pin dip pin function 1 -v in 4 +v in 5 +v out 7 -v out sc package pin connections sc & 3c - 4 pin sip pin function 1 -v in 2 +v in 3 -v out 4 +v out CRE1s 0505dc xyyww 11.530.2 [0.4540.008] 7.460.25 [0.2940.010] 0.40 [0.016] min 4.100.5 [0.1610.020] (1.13 [0.044]) (1.95 [0.077]) 6.10 +0.15 -0.25 [ 0.240 +0.006 -0.010 ] 2.54 [0.100] 0.500.05 [0.0200.002] 0.250.05 [0.0100.002] 1234 s CRE1s xxxxs3c xyyww 3c package CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com/support
kdc_CRE1.d02 page 11 of 14 package specifications (continued) 0.25 (0.010) 0.10 (0.004) 2.79 (0.110) max 6.35 (0.250) 5.85 (0.230) 6.60 (0.260) 5.95 (0.234) (1.875 max) 0.1(0.004) s 2.54 (0.100) 0.65 (0.026) 0.55 (0.022) 1 2.10 (0.083) 10 pins 0.2 (0.008) s 14 plane seating detail a s detail a p reference plane 0.30 (0.012) 0.20 (0.008) 0.50 (0.020) 1.50 (0.059) 1.20 (0.047) 5.00 7 xyyww CRE1s0505mc 8 3 12.70 (0.500) 7.62 (0.300) 10.90 0.3 (0.43 0.012) 7.70(0.303) all dimensions in mm (inches) controlling dimension is mm. all pins on a 2.54 (0.100) pitch and within 0.25 (0.010) of true position weight: 1.2g pin connections - CRE1sxxxxmc/mec pin function 1 -v in 3 +v in 7 -v out 8 +v out 14 na CRE1s0505mc CRE1s0505mec 2.54 (0. 100) 0.6 0.05 (0.024 0.002) 0.2 (0.008) min. 10.70 0.15 ( 0.4210.006) 11.00 0.15 ( 0.4330.006) 1 3 7 8 14 2.54 0.15 (0. 100 0.006) x5 pins 0.10 s 1.56 0.10 (0 .061 0.004) 7.62 (0. 300) 12.70 0.20 (0.500 0.008) 7.05 +0.35 -0.10 0.278 ( ) +0.014 -0.004 0.25 0.05 (0.010 0.002) CRE1s0505mec xyyww CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com/support
kdc_CRE1.d02 page 12 of 14 package specifications (continued) recommended footprint details tube outline dimensions dc sc/3c tube quantity (dc & sc): 35 (3c):40 unless otherwise specifed all dimensions in mm [inches] 0.55mm [0.022]. tube length (dc&sc) : 520mm [20.472] 2.0 [0.079] tube length (3c) : 525mm [20.669] 2.0 [0.079]. dc tube sc tube 12.0 [ 0.472] 14.5 [ 0.571] 5.070.80 [0.2000.03] 5.05 [0.199] 3c tube 2.54 [0. 100] 2.54 [0. 100] x4 holes ? 1.15 1.00 [ ? 0.045 0.039 ] 5.0 [0.197] 12.43 [0.489] 18.0 [ 0.709] 9.3 [0.366] 9.3 [0.366] 14.8 [ 0.583] 4.45 [0.175] 7.7 [0.303] CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com/support
kdc_CRE1.d02 page 13 of 14 package specifications (continued) recommended footprint details tube outline dimensions tube quantity (mc): 35 (mec): 30 unless otherwise specifed all dimensions in mm [inches] 0.55mm [0.022]. tube length (mc&mec) : 4752.0 (18.700.07). CRE1s0505mc CRE1s0505mec 9.40 (0.370) 2.10 (0.083) 6.70 (0.264) 14.35 (0.565) 0.600.15 (0.0240.006) 9.70 (0.382) 2.00 (0.079) 7.62 (0.3) 1.00 (0.040) min 2.54 (0.1) 9.05 (0.36) 11.40 (0.45) 14.85 (0.59) CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com/support
kdc_CRE1.d02 page 14 of 14 this product is subject to the following operating requirements and the life and safety critical application sales policy: refer to: http://www.murata-ps.com/requirements/ tape & reel specifications reel outline dimensions tape outline dimensions reel packaging details 13.25 (0.52) 0.60 (0.02) max. 16.00 (0.63) 8.10 (0.32) 11.50 (0.45) direction of unreeling 1.75(0.07) 11.50 (0.45) 24.000.30 (0.940.01) 4.00 (0.16) 2.00 (0.08) 1.50 (?0.06) -0.00 (-0.00) +0.004 (+0.10) ?100 (3.94) 13.000.5 (0.510.02) 3302.0 (12.990.08) ? 24.40 (0.96) 2.00(+0.08) -0.00(0.00) (at hub section) 30.40(1.20) max trailer section 160 (6.30) min goods enclosure section leader section 400 (15.75) min carrier tape start 100 (3.94) min CRE1s0505mc xyyww CRE1s0505mec xyyww CRE1s0505mc xyyww product orientation pin 1, located nearest to carrier drive sprocket. reel quantity: 500 CRE1 series isolated 1w single output isolated dc-dc converters www.murata-ps.com/support murata power solutions, inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. the descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. specifcations are subject to change without notice. ? 2018 murata power solutions, inc.

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