wra wra wra wra wra wra wra wra - - - - - - - - yd- yd- yd- yd- yd- yd- yd- yd- 12 12 12 12 12 12 12 12 w w w w w w w w wrb wrb wrb wrb wrb wrb wrb wrb - - - - - - - - yd yd yd yd yd yd yd yd - - - - - - - - 12 12 12 12 12 12 12 12 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 selection selection selection selection selection selection selection selection guide guide guide guide guide guide guide guide order code input output efficiency 3 (%.typ.) voltage(vdc) current(ma) voltage (vdc) current(ma) nominal range no load 2 max. min. wr b1202 yd- 12 w 12 9 - 18 50ma 2.5 3500 0ma 82 wr b 12 03 yd- 12 w 12 9 - 18 60ma 3.3 3500 0ma 8 4 wr b1205 yd- 12 w 12 9 - 18 53ma 5.1 2 4 00 0ma 8 6 wrb 1212 yd- 12 w 12 9 - 18 15ma 12 1 0 00 0ma 86 wrb12 15 yd- 12 w 12 9 - 18 17ma 1 5 8 00 0ma 8 6 wr a120 5yd- 12 w 12 9 - 18 24ma 5 12 00 0ma 8 2 wra 12 12 yd- 12 w 12 9 - 18 19ma 12 5 00 0ma 8 7 wra 12 1 5 yd- 12 w 12 9 - 18 24ma 15 40 0 0ma 8 7 wr b2402 yd- 12 w 24 18 -36 36ma 2.5 3500 0ma 83 wrb 2 4 03yd- 12 w 24 18 -36 36ma 3.3 3500 0ma 85 wrb 2 4 05yd- 12 w 24 18 -36 35ma 5.1 2 4 00 0ma 8 7 wrb 2 4 12yd- 12 w 24 18 -36 16ma 12 1 0 00 0ma 8 7 wrb 2 4 15yd- 12 w 24 18 -36 17ma 1 5 8 00 0ma 8 7 wra 24 05yd- 12 w 24 18 -36 15ma 5 12 00 0ma 83 wra 24 12yd- 12 w 24 18 -36 15ma 12 5 00 0ma 8 8 wra 24 15yd- 12 w 24 18 -36 18ma 15 40 0 0ma 8 8 wrb 48 0 2 yd- 12w 48 36 -7 2 10ma 2.5 3500 0ma 83 wrb 48 0 3 yd- 12w 48 36 -7 2 14ma 3.3 3500 0ma 85 wrb4805yd-12w 48 36 -7 2 23ma 5.1 2 4 00 0ma 87 wrb 48 12yd- 12w 48 36 -7 2 11ma 12 1 0 00 0ma 8 7 wrb 48 15yd- 12w 48 36 -7 2 5ma 1 5 8 00 0ma 8 7 wra4805yd- 12w 48 36 -7 2 6ma 5 12 00 0ma 8 3 wra4812yd- 12w 48 36 -7 2 6ma 12 5 00 0ma 8 8 wra4815yd- 12w 48 36 -7 2 6ma 15 40 0 0ma 8 8 note ( apply to this data ) : 1. mil-hdbk-217f notice2 @ta=25 ,full load(ground,benign,controlled environment). 2. typical value at nominal input voltage and no load. 3. typical value at nominal input voltage and full load. 4. the on/off control pin voltage is referenced to -input. 5. the wra(b)-yd-12w series can meet en55022 class a with parallel an external capacitor to the input pins. recommend: 12vin:6.8 f/50v. 24vin:4.7 f/50. 48vin:2.2 f/100v. 6. an external input filter capacitor is required if the module has to meet en61000-4-4,en61000-4-5. the filter capacitor power mate suggest:nippon chemi-con ky series,220/100v,esr 48m ? . microdc reserves the copyright 12 w, wide input, isolated & regulated dual & single output dc-dc converter features features features features features features features features 12 watts output power output current up to 3.5a standard 31.8 20.3 10.2mm high efficiency up to 88% 2:1 wide input voltage range five-sided continuous shield flxed switching frequency (400khz) standard 24 pin dip package i/o isolation 1500 vdc ce mark meets 2009/11/12 compliant to rohs bstdg13061091rc-4 applications applications applications applications applications applications applications applications the wra(b)-yd-12w series offer 12 watts of output power from a package in an ic compatible 24pin dip configuration.wra(b)-yd-12w series have 2:1 wide input voltage of 9-18,18-36 and 36-7 2 vdc. the wra(b)-yd-12w have features 1500vdc of isolation,short circuit protection and as well as five sided shielding. wrb4805yd-12w derating curve wrb4805yd-12w efficiency vs input voltage wrb4805yd-12w efficiency vs output load product product product product product product product product id id id id id id id id description description description description description description description description
wra wra wra wra wra wra wra wra - - - - - - - - yd- yd- yd- yd- yd- yd- yd- yd- 12 12 12 12 12 12 12 12 w w w w w w w w wrb wrb wrb wrb wrb wrb wrb wrb - - - - - - - - yd yd yd yd yd yd yd yd - - - - - - - - 12 12 12 12 12 12 12 12 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 t t t t t t t t echnical echnical echnical echnical echnical echnical echnical echnical specification specification specification specification specification specification specification specification (all (all (all (all (all (all (all (all specifications specifications specifications specifications specifications specifications specifications specifications are are are are are are are are typical typical typical typical typical typical typical typical at at at at at at at at nominal nominal nominal nominal nominal nominal nominal nominal input,full input,full input,full input,full input,full input,full input,full input,full load load load load load load load load and and and and and and and and 25 25 25 25 25 25 25 25 otherwise otherwise otherwise otherwise otherwise otherwise otherwise otherwise noted) noted) noted) noted) noted) noted) noted) noted) output output output output output output output output specifications specifications specifications specifications specifications specifications specifications specifications output power 12watts,max. v oltage accuracy 1.2% minimum load 0% line regulation ll to hl at full load single 0.2% dual 0.5% load regulation no load to full load single(dip) 0.5% dual (dip) 1% (2.5vo only) 1% cross regulation(dual) asymmetrical load 25%/100% fl 5% ripple and noise 20mhz bandwidth see table temperature coefficient 0.02%/ ,max. transient response recovery time 25% load step change 250 over voltage protection zener diode clamp(only single) 2.5vdc output 3.3vdc output 5.1vdc output 12vdc output 15vdc output 3.9vdc 3.9vdc 6.2vdc 15vdc 18vdc over load protection % of fl at nominal input 150% short circuit protection continuous,automatics recovery input input input input input input input input specifications specifications specifications specifications specifications specifications specifications specifications input voltage range 12vdc nominal input 9-18vdc 24vdc nominal input 18-36vdc 48vdc nominal input 36-72vdc input filter pi type input surge voltage 12vdc input 36vdc 100ms,max 24vdc input 50vdc 100ms,max 48vdc input 100vdc 100ms,max input reflected ripple current 20map-p start up time nominal input and power up 450ms constant resistive load start -up voltage 12vdc input 9vdc 24vdc input 18vdc 48vdc input 36vdc s hutdown voltage 12vdc input 8vdc 24vdc input 16vdc 48vdc input 33vdc remote on/off 4 dc-dc on open or 3.0v wra wra wra wra wra wra wra wra - - - - - - - - yd- yd- yd- yd- yd- yd- yd- yd- 12 12 12 12 12 12 12 12 w w w w w w w w wrb wrb wrb wrb wrb wrb wrb wrb - - - - - - - - yd yd yd yd yd yd yd yd - - - - - - - - 12 12 12 12 12 12 12 12 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 recommended footprint top view grid:2.54mm(0.1inch) diameter:1.00mm(0.039inch) footprint footprint footprint footprint footprint footprint footprint footprint details details details details details details details details pin single dual 2 3 gnd gnd 9 nc 0v 11 nc -vo 14 +vo +vo 16 0v 0v 22 23 vin vin nc:no connection 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. 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. note: unit:mm[inch] pin section tolerances: 0.10mm[ 0.004inch] general tolerances: 0.25mm[ 0.010inch] 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 recommended recommended recommended recommended recommended recommended recommended recommended footprint footprint footprint footprint footprint footprint footprint footprint 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 mechanical mechanical mechanical mechanical mechanical mechanical mechanical mechanical dimensions dimensions dimensions dimensions dimensions dimensions dimensions dimensions
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