Embedded Power for
Business-Critical Continuity
NFS40 Medical Series
Single & Triple Output
Total Power:
40 - 50W
Input Voltage:
85 - 264 VAC
120 - 370 VDC
# of Outputs:
Single, triple
Rev.06.9.09_118
NFS40 Medical
1 of 4
Special Features
• 5.0 x 3.0 x 1.2 inch package
(1U applications)
• Industry standard package
• Overvoltage and short circuit
protection
• 40 W with free air convection
• EN55022, EN55011 conducted
noise level A
• UL, VDE and CSA safety approvals
• Available RoHS compliant
• 2 year warranty
Electrical Specifications
Output
Voltage adjustability:
Line regulation:
LL to HL, FL
Load regulation:
FL to NL
Transient response:
Temperature coefficient:
Overvoltage protection:
Output power limit:
Short circuit protection:
+5 V output on triples
Vout on singles
Main output
Auxiliary outputs
Main output
Auxiliary outputs
+5 V (1.5 - 3 A step)
All outputs
+5 V output
Primary power limited
Single outputs
Multiple outputs
± 5.0%
± 5.0%
± 0.2%
± 1.0%
± 2.0%
± 5.0%
± 120 mV max. dev.
500 µs recovery
±0.02%/°C
6.25 ± 0.75 Vout
90 W input power limit
Continuous
Short term
85 - 264 Vac
120 - 370 Vdc
47 - 440 Hz
110 Vac, 60 Hz, cold start
230 Vac, 50 Hz, cold start
110 Vac, 60 Hz
230 Vac, 50 Hz
10 A
22 A
18 µA max.
28 µA max.
Input
Input voltage range:
Safety
• UL2601
• CSA22.2 No. 125
• IEC601/VDE0750
Input frequency range:
Input surge current:
Safety ground leakage
current:
Embedded Power for
Business-Critical Continuity
Rev.06.9.09_118
NFS40 Medical
of 4
Electrical Specifications Continued
All specifications are typical at nominal input, full load at 25
°
C unless otherwise stated
EMC Charateristics
Conducted emissions:
Radiated emissions:
ESD air:
ESD contact:
Surge:
Fast transients:
Radiated immunity:
Conducted immunity:
EN55022, FCC part 15
EN55022, FCC part 15
EN61000-4-2, level 3
EN61000-4-2, level 4
EN61000-4-5, level 3
EN61000-4-4, level 3
EN61000-4-3, level 3
EN61000-4-6, level 3
110 Vac
230 Vac
110 Vac, 230 Vac
Input/output
Input/chassis
Level A
Level A
Perf. criteria 1
Perf. criteria 1
Perf. criteria 1
Perf. criteria 1
Perf. criteria 2
Perf. criteria 2
18 ms
132 ms
70% typical
4000 Vac
1500 Vac
20 - 110 kHz
General Specifications
Hold-up time:
Efficiency:
Isolation voltage:
Switching frequency:
Approvals and standards:
(See Note 12)
Weight:
MTBF demonstrated:
VDE0750, IEC601, EN60601-1, UL2601, CSA C22.2 No. 125
270 g (9.6 oz)
MIL-HDBK-217E
170,000 hours
Environmental Specifications
Thermal performance:
Operating, see curve
Non-operating
0 - 50 °C ambient temperature,
convection cooled
0 - 50 °C ambient temperature
+50 °C to +70 °C ambient
Peak (30 seconds)
Relative humidity:
Altitude:
Vibration (See Note 11):
Non-condensing
Operating
Non-operating
5 - 500 Hz
0° C to +70 °C
-40 °C to +85 °C
40 W
50 W @ 20 CFM
Derate linearly to 50% load
60 W
5 to 95% RH
10,000 feet max.
40,000 feet max.
0.75 G peak
Embedded Power for
Business-Critical Continuity
Ordering Information
Ordering Information
Output
Voltage
+5.1 V (V
A
)
+12 V (V
B
)
–12 V
(6)
+5.1 V (V
A
)
+15 V (V
B
)
-15 V
(6)
12 V
(7)
15 V
(7)
24 V
(7)
+5.1 V
+12 V
–12 V
Notes
1
2
3
4
5
Rev.06.9.09_118
NFS40 Medical
of 4
Output Currents
Conv Max
(1)
3A
2A
0.35 A
3A
2A
0.35 A
3.3 A
2.6 A
1.6 A
4A
0.35 A
0.35 A
20 CFM Max.
(2)
5A
2A
0A
5A
2A
0.5 A
4A
3.3 A
2A
7A
1A
1A
Peak
(3)
7A
3A
---
7A
2.5 A
---
5A
4A
2.5 A
5A
0.5 A
0.5 A
Ripple
(4)
PK-PK
50 mV
120 mV
120 mV
50 mV
150 mV
150 mV
120 mV
150 mV
240 mV
50 mV
120 mV
120 mV
Total
Regulation
(5)
± 2.0%
± 5.0%
± 5.0%
± 2.0%
± 10%/-3.0%
± 5.0%
± 2.0%
± 2.0%
± 2.0%
± 2.0%
± 5.0%
± 5.0%
Model Numbers
(13, 14)
NFS40-7908J
NFS40-7910J
NFS40-7912J
NFS40-7915J
NFS40-7924J
NFS40-7928J
6
7
8
9
10
11
12
13
14
Natural convection cooling, 40 W maximum.
Forced air, 20 CFM at 1 atmosphere, 50 W maximum.
Peak output current lasting less than 30 seconds with duty cycle less than 10%.
During peak loading, outputs may go outside of total regulation limits. Peak
total power must not exceed 60 W.
50 MHz bandwidth, peak-to-peak, measured differentially.
Total regulation is defined as the static output regulation at 25 °C, including
initial tolerance, load currents within stated limits, and output voltages
adjusted to their factory settings. Also, 0.25 ² I
A
/ I
B
² 5.0 to maintain stated
regulation.
A minimum load of 0.5 A is required on the +5 V output to obtain full current
from the negative output.
Single output models have floating outputs which may be referenced as either
positive or negative.
Derating curve is application specific for ambient temperatures > 50 °C, for
optimum reliability no part of the heatsink should exceed 120 °C and no
semiconductor case temperature should exceed 130 °C.
Caution: Allow a minimum of 1 second after disconnecting the power when
making thermal measurements.
Although the minimum output current of the NFS40-79XXJ is 0 A, a 4 W
minimum load is required to achieve design MTBF.
Three orthogonal axes, sweep at 1 octave/min, 5 minute dwell at four major
resonances.
This product is only for inclusion by professional installers within other
equipment and must not be operated as a stand alone product.
The ‘J’ suffix indicates that these parts are Pb-free (RoHS 6/6) compliant.
NOTICE: Some models do not support all options. Please contact your local
Emerson Network Power representative or use the on-line model number
search tool at http://www.PowerConversion.com to find a suitable alternative.
AC mating connector
Molex 09-50-3031 or equivalent with Molex 08-50-0105 or equivalent crimp terminal.
DC mating connector
Molex 09-91-0600 or equivalent with Molex 08-50-0164 or equivalent crimp terminal.
Pin Connections
J1
Pin 1
Pin 2
J2
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
P1
Pin 1
DERATING CURVE
Output Power (Watts)
50W
20 CFM FORCED AIR COOLING
40W
-7908J, -7928J
AC Line
AC Neutral
+12 V
+5.1 V
+5.1 V
Return
Return
-12 V
-7910J
AC Line
AC Neutral
+15 V
+5.1 V
+5.1 V
Return
Return
-15 V
SINGLES
AC Line
AC Neutral
+Vout
+Vout
+Vout
Return
Return
Return
Safety Earth Ground
NATURAL
CONVECTION
COOLING
25W
20W
0C
10C
20C
30C
40C
50C
60C
70C
Embedded Power for
Business-Critical Continuity
Mechanical Drawing
0.156 (3.96) Dia.
(4 Places)
5.00
(127.00)
Americas
5810 Van Allen Way
Carlsbad, CA 92008
USA
Telephone: +1 760 930 4600
Facsimile: +1 760 930 0698
Rev.06.9.09_118
NFS40 Medical
4 of 4
NON-METALLIC
STAND-OFF
(SEE NOTE A)
C5
Q1
MAXIMUM
COMPONENT
HEIGHT 1.2 inches
Europe (UK)
Waterfront Business Park
Merry Hill, Dudley
West Midlands, DY5 1LX
United Kingdom
Telephone: +44 (0) 1384 842 211
Facsimile: +44 (0) 1384 843 355
J1
3.00
(76.2)
~
N
~
L
F1
F 3.15A, H 250VAC
P1 (SEE NOTE C)
1
T1
J2
2.550
(64.8)
Asia (HK)
14/F, Lu Plaza
2 Wing Yip Street
Kwun Tong, Kowloon
Hong Kong
Telephone: +852 2176 3333
Facsimile: +852 2176 3888
0.22 (5.59)
4.55
(115.8)
For global contact, visit:
www.PowerConversion.com
techsupport.embeddedpower
@emerson.com
While every precaution has been taken to ensure
accuracy and completeness in this literature, Emerson
Network Power assumes no responsibility, and disclaims
all liability for damages resulting from use of this
information or for any errors or omissions.
0.22
(5.59)
ALL DIMENSIONS IN INCHES (mm)
Mechanical Notes
A
In order to meet safety requirements, a non-metallic stand-off is mandatory for one hole as specified in the mechanical
drawing above.
B
The ground pad of the mounting hole near P1 allows system grounding through a metal stand-off.
C
To improve conducted noise, the ground pad of the mounting hole near the output connector should be connected with
the ground pad of the mounting hole near P1. Use metal stand-offs attached to a common metal chassis. This connection
also significantly attenuates common mode noise.
D
A standard L-bracket and enclosure kit is available for mounting which contains all screws, connectors and necessary
mounting hardware. Order part number NFS40CJ.
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