Rated30WMax.
40W
Peak45W
SNP-HF3 Series

Medical & ITE
General Purpose

Features:1.57" x 2.76" x 0.93"●

Design for BF application●

Meet 2 X MOPP and Contact Leakage < 100uA●

Safety Class II & EMI Class B●

Follow ErP Directive of EU●

High mechanical torque start-up●-40oC to +70oC operating temperature●

5,000m operation altitude●

Convection cooling for rated load●

Forced air for max. load

General Specifications:
Input voltage ......................................... 90 VAC to 264 VAC
Input frequency ............................................. 47 Hz to 63 HzInrush current ................................ < 40/80A at 115/230VAC
Hold up time ................................................................. 16ms
Over load/Short citcuit protection ................... auto recovery
Over voltage protection ............................................ latch off
Operating temperature ..................................... -40oC to 70oC
derating: 2.5% / oC > 50oC
Storage temperature ..................................... -40oC to +85oC

EMI .......................................... EN55011 "B", EN61000-3-3
Harmonics............................................ EN61000-3-2, class A
EMS...................................... EN61000-4-2,-3,-4,-5,-6,-8,-11
Safety ................................. UL/CSA/EN60950-1, 2nd edition
ANSI/AMMI/CSA/EN60601-1, 3.1 edition
CB report, CE mark, RM report/file
Energy Saving .............................................. ENERGY STARfor computers version 6.0
for displays version 6.0
ErP regulation EC(No) 1275/2008

Mechanical Specifications:(2.76")

Notes:
1.
2.
(1.57")

3.
4.

5.
(0.93")-Hui-

JUN. 2015

Size:
1.57" x 2.76" x 0.93"
Mounting Hole:
33 x 64 (mm)Connectors:
AC input: JST B2P3-VH or Molex 5277-02A or equivalent
DC output: JST B2P-VH or Molex 5273-02A or equivalent
Output Pin assignment:
12Vo

GND

Packing:
Net weight: 61 g approx. / unit
Gross weight: 12 kg approx. / carton, 150 units / carton
Carton size (mm): 412 (L) x 327 (W) x 283 (H)10 years Warranty (contact Skynet's Distributors for details)** This data sheet is only for models selection. For business, engineering specification by model must be used.

4-1

Rated30W
Max.
40W
Peak45W
SNP-HF3 Series

Medical & ITE
General Purpose

Output Specifications:
MODELNO.

OUTPUT			LOAD
RAILMIN. RATED		 MAX. PEAK

INITIAL

ACCURACY			

SNP-HF37		

STEP EFFICIENCY		AVERAGE@ 20% LOAD @ 50% LOAD @ 100% LOAD EFFICIENCY86%		87%		

86%

86%+12V0A
2.5A 3.3A 3.75A+11.8V~+12.2V
SNP-HF37 -A							72% 		

SNP-HF38+15V0A
2A 2.67A
3A+14.8V~+15.2V
SNP-HF38 -A							74% 		

81% 		

82%

78%

SNP-HF3986%		

87%		

86%

86%														

+24V0A 1.25A 1.67A 1.88A+23.8V~+24.2V
SNP-HF39 -A																SNP-HF3T+48V
0A 0.63A 0.83A 0.94A+47.6V~+48.4V
SNP-HF3T -A														

86%		74% 		

86%		79% 		80% 		

87%		

80% 		

87%		85% 		

82%

86%

84%

86%

86%

77%

86%

78%

86%

83%

Note:
1.
2.
3.
4.

5.
6.
7.

Standby Power Cosumption with System:
For computers and displays, ENERGY STAR in U.S. and ErP regulation in Europe require the input power should be less than 0.5W at standby mode.
Output Load:
30W for convection cooling; 40W for forced air cooling.
Peak Load Duration:
Peak 45W can last for 5 sec.
Isolation Grade:Primary ←→ Ground : 1MOPP (1500Vac)
Primary ←→ Secondary : 2MOPP (4000Vac)
Secondary ←→ Ground		 : 1MOPP (1500Vac)
Leakage Current:
Earth leakage current < 300uA
Touch current < 100uA
EMI Grounding:If there is a metal sheet under the power supply, connect the EMI ground to that metal sheet.
Model Selection:
Most of power supplies will create audible burst sound at light load, if the application wants to meet input power < 0.5W at standby mode.
SNP-HF3x is for ITE & Medical applications which require standby mode.
SNP-HF3x-A is for ITE & Medical applications but without burst sound and no standby mode.

-Hui-4-2** This data sheet is only for models selection. For business, engineering specification by model must be used.

JUN. 2015

Rated30W
Max.
40W
Peak45W
SNP-HF3 Series

Medical & ITE
General Purpose

Performance for SNP-HF37-A:
1. Switching frequency ripple

2. Line frequency ripple+12V/2.5A+12V/2.5A

50mV/div, 5ms/div

50mV/div, 10us/div

3. Output turn on wave form

4. Output turn off wave form

+12V/2.5A+12V/2.5A

5.0V/div, 20ms/div

5.0V/div, 10ms/div

5. Hold-up time

6. Over voltage protection
Trip point around 15.8V(60% Rated load)

5.0V/div
Primary DC

50V/div
10ms/div

5.0V/div, 10ms/div-Hui-JUN. 2015** This data sheet is only for models selection. For business, engineering specification by model must be used.

4-3

Rated30W
Max.
40W
Peak45W
SNP-HF3 Series

Medical & ITE
General Purpose

7. FCC B Class I

8. EN55011 22 B Class I

9. FCC B Class II

10. EN55011 22 B Class II

11. Power derating curve

12. Torque capability
SNP-HF37

8.75A
7.5A
6.25A
5A
3.75A

50ms

5s

-Hui-4-4** This data sheet is only for models selection. For business, engineering specification by model must be used.

JUN. 2015