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 .