wra wra wra wra wra wra wra wra - - - - - - - - yd- yd- yd- yd- yd- yd- yd- yd- 5 5 5 5 5 5 5 5 w w w w w w w w wrb wrb wrb wrb wrb wrb wrb wrb - - - - - - - - yd yd yd yd yd yd yd yd - - - - - - - - 5 5 5 5 5 5 5 5 w w w w w w w w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 1 of 3 order order order order code code code code input input input input voltage voltage voltage voltage (vdc) (vdc) (vdc) (vdc) output output output output efficiency efficiency efficiency efficiency (%.typ.) (%.typ.) (%.typ.) (%.typ.) voltage voltage voltage voltage (vdc) (vdc) (vdc) (vdc) current current current current max. max. max. max. WRB0503YD-1200 4.5 C 7 3.3 1200 75% wrb0505yd-5w 4.5 C 7 5 1000 79% wra0505yd-5w 4.5 C 7 5 500 82% wrb1203yd-1200 9 C 18 3.3 1200 77% wrb1205yd-5w 9 C 18 5 1000 81% wra1205yd-5w 9 C 18 5 500 81% wrb2403yd-1200 18 C 36 3.3 1200 79% wrb2405yd-5w 18 C 36 5 1000 83% wra2405yd-5w 18 C 36 5 500 83% wrb4803yd-1200 36 C 75 3.3 1200 79% wrb4805yd-5w 36 C 75 5 1000 83% wra4805yd-5w 36 C 75 5 500 83% model model model model model model model model selection selection selection selection selection selection selection selection wrb wrb wrb wrb wrb wrb wrb wrb 24 24 24 24 24 24 24 24 0 0 0 0 0 0 0 0 5 5 5 5 5 5 5 5 y y y y y y y y d d d d d d d d - - - - - - - - 5w(1000) 5w(1000) 5w(1000) 5w(1000) 5w(1000) 5w(1000) 5w(1000) 5w(1000) product series input voltage output voltage wide ( 2 :1) input range dip 24 package style rated power (output current) input input input input input input input input specifications specifications specifications specifications specifications specifications specifications specifications input current no load /full load 5 vin models 50ma / 1460ma typ. 12 vin models 20ma / 590ma typ. 24 vin models 5ma / 290ma typ. 48 vin models 3ma / 145ma typ. start-up voltage / under voltage shut down 5 vin models 4.4 vdc / 4.0 vdc 12 vin models 8.0 vdc / 8.0 vdc 24 vin models 16.0 vdc / 16.0 vdc 48 vin models 32.0 vdc / 32.0 vdc surge voltage (1 sec. max.) 5 vin models 10 v max. 12 vin models 25 v max. 24 vin models 50 v max. 48 vin models 100 v max. reverse voltage protection 1.0 a max. conducted noise (input) en 55022 level a, fcc part 15, level a output output output output output output output output specifications specifications specifications specifications specifications specifications specifications specifications voltage set accuracy 1 % regulation C input variation vin min. to vin max. 0.3 % max. C load variation 10 C 100 % C single output models 1 % max. C dual output models balanced load 1 % max. C dual output models unbalanced 3 % max. ripple and noise (20 mhz bandwidth) 50 mvpk-pk max. temperature coefficient 0.02 % /k output current limitation >120 % of i out max., constant short-circuit protection indefinite (automatic recovery) capacitive load C single output models 6800 f max. C dual output models 1000 f max. (each output) 5 5 5 5 w, w, w, w, wide wide wide wide input, input, input, input, isolated isolated isolated isolated & & & & regulated regulated regulated regulated dual/single dual/single dual/single dual/single output output output output dc-dc dc-dc dc-dc dc-dc converter converter converter converter features features features features features features features features wide 2:1 input range full smd-design high efficiency up to 86% extended operating temperature range -40 c to 85 c i/o-isolation 1500 vdc indefinite short-circuit protection rohs compliance 24-pin dip with industry standard pinout high reliability, mtbf >1 mio. h 3 year product warranty applications applications applications applications applications applications applications applications microdc reserves the copyright selection selection selection selection selection selection selection selection guide guide guide guide guide guide guide guide the wra-yd-5w&wrb-yd-5w of 2:1.state of the art smd-technology guarantees a product with very high reliability and good cost or performance ratio. high efficiency allows an operating temperature range of -40 to +85 without derating. i/o-isolation of 1500 vdc together with conducted noise compliance to en 55022-a and fcc, level a makes these converters ideal for a wide range of applications in communications, mobile battery powered equipments and industrial systems.
wra wra wra wra wra wra wra wra - - - - - - - - yd- yd- yd- yd- yd- yd- yd- yd- 5 5 5 5 5 5 5 5 w w w w w w w w wrb wrb wrb wrb wrb wrb wrb wrb - - - - - - - - yd yd yd yd yd yd yd yd - - - - - - - - 5 5 5 5 5 5 5 5 w w w w w w w w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 2 of 3 general general general general general general general general specifications specifications specifications specifications specifications specifications specifications specifications temperature ranges C operating C 40 ... + 85 C case temperature +100 max. C storage C 55 ... + 125 derating 3.5% /k above 70 humidity(non condensing) 95 % rel h max. reliability, calculated mtbf (mil-hdbk-217 e) >1 mio. h @ + 25 isolation voltage input/output 1500 vdc isolation capacity input/output 380 pf typ. isolation resistance input/output (500 vdc) > 1000 m ohm switching frequency 300 khz typ. (pulse frequency modulation pfm) safety standards ul 60950, iec 60950, en 60950 compliance up to 60 vdc input voltage(selv limit) safety approval ul /cul file e188913 (5vin models pending) physical physical physical physical physical physical physical physical specifications specifications specifications specifications specifications specifications specifications specifications case material steel, nickel plated baseplate material non conductive fr4 potting material epoxy (ul 94v-0 rated) weight 14 g (0.55 oz) soldering temperature max. 265 c / 10 sec. application application application application application application application application note note note note note note note note requirement requirement requirement requirement on on on on output output output output load load load load in order to ensure the product operate efficiently and reliably,in addition to a max load(namely full load), a minimum load is specified for this kind of dc/dc converter.make sure the specified range of input voltage is not exceeded,the minimum output load no no no no less less less less than than than than 10% 10% 10% 10% load load load load .if the actual load is less than the specified minimum load, the output ripple may increase sharply while its efficiency and reliability will reduce greatly.if the actual output power is very small,please add an appropriate resistor as extra loading,or contact our company for other lower output power products. recommended recommended recommended recommended circuit circuit circuit circuit all the wra_ y d- 5 w&wrb_ y d- 5 w series have been tested a ccording to the following recommended testing circuit before leaving factory.this series should be tested under load( s ee f igure 1). if you want to further decrease the input/output ripple,you can increase capacitance properly or choose capacitors with low esr. however, the capacitance of the output filter capacitor must be proper. if the capacitance is too big, a startup problem might arise. for every channel of output, provided the safe and reliable operation is ensured, the greatest capacitance of its filter capacitor sees (table 1). general: cin: 5v 12v 10 0 f 24v 48v 10 0 f-47 f c out : 10 f/100ma input input input input current current current current while using unstable power source,please ensure the output voltage and ripple voltage do not exceed indexes of the converter. input current of power supply should afford the startup current of this kind of dc/dc module ( see f igure 2). general:ip 1. 4 *iin-max no no no no parallel parallel parallel parallel connection connection connection connection or or or or plug plug plug plug and and and and play play play play typical typical typical typical typical typical typical typical characteristics characteristics characteristics characteristics characteristics characteristics characteristics characteristics temperature derating graph recommended recommended recommended recommended recommended recommended recommended recommended circuit circuit circuit circuit circuit circuit circuit circuit output graph
wra wra wra wra wra wra wra wra - - - - - - - - yd- yd- yd- yd- yd- yd- yd- yd- 5 5 5 5 5 5 5 5 w w w w w w w w wrb wrb wrb wrb wrb wrb wrb wrb - - - - - - - - yd yd yd yd yd yd yd yd - - - - - - - - 5 5 5 5 5 5 5 5 w w w w w w w w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 3 of 3 outline outline outline outline outline outline outline outline dimensions dimensions dimensions dimensions dimensions dimensions dimensions dimensions footprint footprint footprint footprint footprint footprint footprint footprint details details details details details details details details mechanical mechanical mechanical mechanical mechanical mechanical mechanical mechanical dimensions dimensions dimensions dimensions dimensions dimensions dimensions dimensions note: pin diameter ? 0.5 0.05 (0.02 0.002) tolerances 0.5 (0.02) recommended recommended recommended recommended recommended recommended recommended recommended footprint footprint footprint footprint footprint footprint footprint footprint recommended footprint top view grid:2.54mm(0.1inch) diameter:1.00mm(0.039inch) pin single dual 2 3 C vin (gnd) C vin (gnd) 9 no pin common 11 no con. C vout 14 +vout +vout 16 C vout common 22 23 +vin (vcc) +vin (vcc) nc:no connection footprint footprint footprint footprint footprint footprint footprint footprint details details details details details details details details tube tube tube tube tube tube tube tube outline outline outline outline outline outline outline outline dimensions dimensions dimensions dimensions dimensions dimensions dimensions dimensions note: unit :mm[inch] general tolerances: 0.50mm[ 0.020inch] l=530mm[20.866inch] tube quantity: 15pcs l=220mm[8.661inch] tube quantity: 6pcs when when when when the the the the environment environment environment environment temperature temperature temperature temperature is is is is higher higher higher higher than than than than 71 71 71 71 , , , , the the the the product product product product output output output output power power power power should should should should be be be be less less less less then then then then 60% 60% 60% 60% of of of of the the the the rated rated rated rated power. power. power. power. no no no no parallel parallel parallel parallel connection connection connection connection or or or or plug plug plug plug and and and and play. play. play. play. use use use use dual dual dual dual output output output output simultaneously,forbid simultaneously,forbid simultaneously,forbid simultaneously,forbid pening pening pening pening output output output output pin pin pin pin (0v) (0v) (0v) (0v) to to to to use use use use as as as as single single single single output. output. output. output. microdc professional power module,inc. tel:0086-20-86000646 e-mail:tech@microdc.cn website:http://www.microdc.cn rohs rohs rohs rohs compliant compliant compliant compliant information information information information this series is compatible with rohs soldering systems with a peak wave solder temperature of 300 c for 10 seconds. the pin termination finish 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. both types in this series are backward compatible with sn/pb soldering systems. reach reach reach reach compliant compliant compliant compliant information information information information this series has proven that this product does not contain harmful chemicals, it also has harmful chemical substances through the registration, inspection and approval.
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