pin configuration derating curve ta ( ) load (%) -40 0 25 50 75 85 100 50 100 -vin +vin +vout -vout trim 2 1 4 5 3 load up down trimpot vr vr 20k external output trimming output output +vin trim -vin -vout +vout r.c pin no. pin no. 1 4 2 5 3 6 bottom view side view 20.4[0.80] 5.8 [0.23] 7.62 [0.30] 5.08 [0.20] 25.4[1.00] 11.2[0.44] 10.2 [0.40] 50.8[2.00] 20.32[0.80] 15.24[0.60] 1 3 4 5 2 6 2" 1" compact size 2:1 wide input range high efficiency up to 89.5% 1500vdc i/o isolation built-in remote on/off control built-in trimming output built-in emi filter protections: short circuit / overload / input and output over voltage cooling by free air convection six-sided shield metal case 100% burn-in test low cost / high reliability approvals: fcc / ce 2 years warranty specification file name:ska20-spec 2011-09-13 SKA20A-05 ska20b-05 ska20c-05 ska20a-12 ska20b-12 ska20c -12 ska20a-15 ska20b-15 ska20c-15 order no. dc voltage current range rated power output switching frequency voltage range efficiency (typ.) dc current input (note. 5) environment safety & emc withstand voltage isolation resistance working temp. over voltage working humidity storage temp., humidity temp. coefficient vibration mtbf dimension others note weight over current filter short circuit protection a: 9 ~ 18vdc b: 18 ~ 36vdc c: 36 ~ 75vdc 300khz typ. 2.0% 0.5% 0.2% 50mvp-p 60mvp-p 220uf -20 ~ +10% 60mvp-p 100uf -20 ~ +10% 20w 400 ~ 4000ma 166 ~ 1666ma 133 ~ 1333ma 5v 12v 15v 88.5% 89% 1910ma 970ma 490ma 1910ma 970ma 500ma 1870ma 950ma 490ma 80ma 55ma 40ma 35ma 25ma 15ma 35ma 25ma 15ma 110% ~ 180% rated output power i/p-o/p:1.5kvdc i/p-o/p: 100m ohms / 500vdc / 25 / 70% rh 700khrs min. mil-hdbk-217f(25 ) -40 ~ +85 (refer to "derating curve") a: >20 ~ 23vdc b: >40 ~ 43vdc c: >80 ~ 82vdc input voltage protection type : shut down o/p voltage, recovers automatically after f ault condition is removed 20% ~ 90% rh non-condensing -55 ~ +125 , 10 ~ 95% rh 0.03% / (0 ~ 50 ) 10 ~ 500hz, 2g 10min./1cycle, period for 60min. each along x, y, z axes 50.8*25.4*11.2 mm or 2"*1"*0.44" inch (l*w*h) 31.2g 1.all parameters are specified at normal input, rated load, 25 70% rh ambi ent. 2.ripple & noise are measured at 20mhz by using a 12" twisted pair terminated w ith a 0.1uf & 47uf capacitor. 3.line regulation is measured from low line to high line at rated load. 4.load regulation is measured from 10% to 100% rated load. 5.please prevent the converter from operating in overload or short circ uit condition for more than 30 seconds. full load input(typ.) no load output pi network 88% 88% 88.5% 89.5% mechanical specification unit:mm(inch) 87.5% 87.5% 88% 20w dc-dc regulated single output converter s k a 2 0 s e r i e s features : protection type : hiccup mode, recovers automatically after fault con dition is removed all output equipped with short circuit protection type : hiccup mode, recovers automatically after fault co ndition is removed ripple & noise (max.) note.2 line regulation note.3 load regulation note.4 voltage accuracy compliance to en55022 class a, fcc part 15 class a compliance to en61000-4-2,3,4,5,6,8, light industry level, crit eria a protection fuse recommended external capacitance load (max.) 1000uf external trim adj. range(typ.) 10% remote control power on : r.c ~ -vin > 2.5vdc or open circuit ; power off : r.c ~ -vin < 0.5vdc or short emc immunity emc emission
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