wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 1 of 3 order code input ou t put voltage(vdc) voltage current max . nominal range wr f1203 yd- 1000 12 9vdc - 18vdc 3.3vdc 1000ma wr f1205 yd- 4w 12 9vdc - 18vdc 5vdc 800ma wr f1207 yd- 4w 12 9vdc - 18vdc 7.2vdc 556ma wr f1209 yd- 4w 12 9vdc - 18vdc 9vdc 444ma wr f1212 yd- 4w 12 9vdc - 18vdc 12vdc 333ma wr f1215 yd- 4w 12 9vdc - 18vdc 15vdc 267ma wr f1218 yd- 4w 12 9vdc - 18vdc 18vdc 222ma wr f1224 yd- 4w 12 9vdc - 18vdc 24vdc 167ma wr f2403 yd- 1000 24 18vdc - 36vdc 3.3vdc 1000ma wr f2405 yd- 4w 24 18vdc - 36vdc 5vdc 800ma wr f2407 yd- 4w 24 18vdc - 36vdc 7.2vdc 556ma wr f2409 yd- 4w 24 18vdc - 36vdc 9vdc 444ma wr f2412 yd- 4w 24 18vdc - 36vdc 12vdc 333ma wr f2415 yd- 4w 24 18vdc - 36vdc 15vdc 267ma wr f2418 yd- 4w 24 18vdc - 36vdc 18vdc 222ma wr f2424 yd- 4w 24 18vdc - 36vdc 24vdc 167ma wr f4803 yd- 1000 48 36vdc - 72vdc 3.3vdc 1000ma wr f4805 yd- 4w 48 36vdc - 72vdc 5vdc 800ma wr f4807 yd- 4w 48 36vdc - 72vdc 7.2vdc 556ma wr f4809 yd- 4w 48 36vdc - 72vdc 9vdc 444ma wr f4812 yd- 4w 48 36vdc - 72vdc 12vdc 333ma wr f4815 yd- 4w 48 36vdc - 72vdc 15vdc 267ma wr f4818 yd- 4w 48 36vdc - 72vdc 18vdc 222ma wr f4824 yd- 4w 48 36vdc - 72vdc 24vdc 167ma wr e1203 yd- 500 12 9vdc - 18vdc 3.3vdc 500ma wr e1205 yd- 4w 12 9vdc - 18vdc 5vdc 400ma wr e1207 yd- 4w 12 9vdc - 18vdc 7.2vdc 278ma wr e1209 yd- 4w 12 9vdc - 18vdc 9vdc 222ma wr e1212 yd- 4w 12 9vdc - 18vdc 12vdc 167ma wr e1215 yd- 4w 12 9vdc - 18vdc 15vdc 133ma wr e1218 yd- 4w 12 9vdc - 18vdc 18vdc 111ma wr e1224 yd- 4w 12 9vdc - 18vdc 24vdc 83ma wr e2403 yd- 500 24 18vdc - 36vdc 3.3vdc 500ma wr e2405 yd- 4w 24 18vdc - 36vdc 5vdc 400ma wr e2407 yd- 4w 24 18vdc - 36vdc 7.2vdc 278ma wr e2409 yd- 4w 24 18vdc - 36vdc 9vdc 222ma wr e2412 yd- 4w 24 18vdc - 36vdc 12vdc 167ma wr e2415 yd- 4w 24 18vdc - 36vdc 15vdc 133ma wr e2418 yd- 4w 24 18vdc - 36vdc 18vdc 111ma wr e2424 yd- 4w 24 18vdc - 36vdc 24vdc 83ma wr e4803 yd- 500 48 36vdc - 72vdc 3.3vdc 500ma wr e4805 yd- 4w 48 36vdc - 72vdc 5vdc 400ma wr e4807 yd- 4w 48 36vdc - 72vdc 7.2vdc 278ma wr e4809 yd- 4w 48 36vdc - 72vdc 9vdc 222ma wr e4812 yd- 4w 48 36vdc - 72vdc 12vdc 167ma wr e4815 yd- 4w 48 36vdc - 72vdc 15vdc 133ma wr e4818 yd- 4w 48 36vdc - 72vdc 18vdc 111ma wr e4824 yd- 4w 48 36vdc - 72vdc 24vdc 83ma model model model model model model model model selection selection selection selection selection selection selection selection wr wr wr wr wr wr wr wr e e e e e e e e 24 24 24 24 24 24 24 24 15 15 15 15 15 15 15 15 y y y y y y y y d d d d d d d d - - - - - - - - 4 4 4 4 4 4 4 4 w w w w w w w w (133) (133) (133) (133) (133) (133) (133) (133) product series input voltage output voltage wide ( 2 :1) input range dip 24 package style rated power (output current) 4 4 4 4 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 24p in dip p ackage 30 00vdc isolation operating temperature: -40 85 h igh e fficiency u p t o 81% l ow p rofile m etal p ackage c ontinuous s hort c ircuit p rotection p in -c ompatible w ith m ultiple m anufacturers rohs compliance mtbf>1000khours 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 wr e _yd- 4 w & wr f _yd- 4 w series are specially designed for applications where a wide range input voltage power supplies are isolated from the input power supply in a distributed power supply system on a circuit board.these products apply to: 1) where the voltage of the input power supply is wide range (voltage range 2:1); 2) where isolation is necessary between input and output (isolation voltage 30 00vdc); 3) where the regulation of the output voltage and the output ripple noise are demanded.
wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w series series http://www.microdc.cn technical enquiries-email:tech@microdc.cn tel:0086-20-86000646 page 2 of 3 recommended recommended recommended recommended recommended recommended recommended recommended circuit circuit circuit circuit circuit circuit circuit circuit output graph 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 wr e _ y d- 4 w&wr e _ y d- 4 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 input input input input input input input input specifications specifications specifications specifications specifications specifications specifications specifications voltage range 12vdc, 9~18vdc 24vdc, 18~36vdc 48vdc, 36~72vdc filter p(pi) network isolation isolation isolation isolation isolation isolation isolation isolation specifications specifications specifications specifications specifications specifications specifications specifications rated voltage (60 sec) 3 0 00vdc resistance > 1000mohm capacitance 120pf, typ . environmental environmental environmental environmental environmental environmental environmental environmental specifications specifications specifications specifications specifications specifications specifications specifications operating temperature (ambient) -40 c ... +85 c storage temperature -55 c ... +125 c case temperature +100 c, max. derating none required humidity (non-condensing) up to 90% cooling free-air convection mtbf: > 1,036,000 hrs (mil-hdbk-217f, ground benign, t=+25 c) specifications are subject to change without notifica tion typical typical typical typical typical typical typical typical characteristics characteristics characteristics characteristics characteristics characteristics characteristics characteristics temperature derating graph general general general general general general general general specifications specifications specifications specifications specifications specifications specifications specifications efficiency 73% to 81% switching frequency 250khz, typ. 100% load output output output output output output output output specifications specifications specifications specifications specifications specifications specifications specifications voltage accuracy 1%, max. voltage balance (dual output) 1% ripple & noise (at 20mhz bw) 60mvp-p, max. short circuit protection continuous short circuit restart automatic line voltage regulation 0.5%, max. load voltage regulation 0.5%, max. temperature coefficient 0.02%/ c, typ. physical physical physical physical physical physical physical physical specifications specifications specifications specifications specifications specifications specifications specifications dimensions 31.75x20.32x10.16mm 1.25x0.8x0.4inches weight 19g case material nickel-coated copper
wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w wre-yd-4w&wrf-yd-4w 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: unit:mm[inch] pin section toleranc e s: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] 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) note: 1. the load shouldn't be less than 10%, otherwise ripple will increase dramatically. 2. operation under 10% load will not damage the converter; however, they may not meet all specification listed. 3. all specifications measured at ta=25 c, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 4. in this data sheet, all the test methods of indications are based on corporate standards. 5. only typical models listed, other models may be different, please contact our technical person for more 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. footprint footprint footprint footprint footprint footprint footprint footprint details details details details details details details details pin single dual 2 3 -v input -v input 9 n.c common 11 n.c -v output 14 +v output +v outpu t 16 -v output common 22 23 +v input +v input nc:no connection
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