model

SMT-012-300VDHW2

SMT-024-288VDHW2

output

dc voltage

12V

24V

voltage tolerance

±0.5V

voltage regulation

±0.5V

voltage tolerance

±0.5%

load regulation

±1.2%

±1%

±1%

rated current

3*4A

5*5A

rated power

300W (5*60W)

288W (3*96W)

input

voltage range

100-277VAC

frequency range

47~63HZ

power Factor(Typ.)@ full load

0.98@120VAC 0.97@277VAC

0.98@120VAC 0.97@277VAC

THD(Typ.)@ full load

<20%

inrush current (Typ.)

35A ,50%,960us @120VAC ; 43A,50%,1ms @277VAC

full load

Efficiency(Typ.)

87%@120V 91%@277VAC

79%

85%@120V 90%@277VAC

ac Current(Typ.)

3.4A@100VAC

3.6A@100VAC

leakage current

<0.50mA

protection

short circuit

shut down o/p voltage, re-power on to recover after fault condition is removed

over load

≤120% hiccup mode ,recovers automatically after fault condition is removed

over temperature

100℃±10℃ shut down o/p voltage, automatically recover after cooling.

environment

working TEMP.

-40~+60℃ (see below derating curve)

working humidity

20~90%RH, non-condensing

storage TEM.,Humidity

-40~+80℃,10~95%RH

TEMP.coefficient

±0.03%/℃(0~50℃)

vibration

10~500Hz, 5G 10min./1 cycle,period for 60min. each along X,Y,Z

axes

Safety&EMC

safety standards

UL8750+UL1310

withstand voltage

I/P-O/P:1.88KVAC

isolation resistance

I/P-O/P:100MΩ/500VDC/25℃/70%RH

EMC emission

fcc 47 CFR part 15 ,Subpart b

EMC immunity

compliance to EN61000-4-2,3,4,5,6,8,11,EN61547,Alight industry

level (surge4KV)

Others

weight

1.9Kg

size

303*78*47mm (L*W*H)

packaging

10PCS/CTN

385*335*200mm 20PCS/CTN

notes

1. all parameters not specially mentioned are measured at 120VAC & 277vac input , rated load and 25℃of ambient temperature.

2. Ripple& noise are measured at 20MHz of bandwidth by using a 12”twisted

pair-wire terminated with a 0.1uf &47uf parallel capacitor.

3. Tolerance:includes set us tolerance,line regulation and load regulation .