International Safety Standard Approvals

VDE0805/EN60950/IEC950/IEC1010 File No. 10401-3336-1036

Licence No. 1485, 1650

UL1950 File No. E136005

CSA C22.2 No. 950 File No. LR41062C

Certificate No. PS/603173

NFS42 SERIES

Triple output

[ 2 YEAR WARRANTY ]

• 6.3 x 3.9 x 1.5 package (1U applications)

• Overvoltage and short circuit protection

• 40W with free air convection

• EN55022, EN55011 conducted emissions level B

• UL, VDE, CSA and BABT safety approvals

The NFS42 series is a 40W universal input AC/DC power supply on a 6.3 x 3.9

inch card with a maximum component height of 1.5 inches for use in 1U

applications. The NFS42 series is available in three standard models with a

lower component count and larger footprint than most standard 40W models to

ensure greater reliability. The NFS42 provides 40W of output power with free air

convection cooling which can be boosted to 50W with 20CFM of air. Standard

features include overvoltage and short circuit protection. The series, with full

international safety approval and the CE mark, meets conducted emissions

EN55022 level B. The NFS42 series is designed for use in low power telecom

and industrial applications such as PABX's, industrial PC's and machine control.

PAGE 1

OUTPUT SPECIFICATIONS

Line regulation

Main output (Output 1)

±1.0%

LL to HL, FL

Output 2

±1.0%

Output 3

±0.1%

Total regulation

Main output (Output 1)

±3.0%

(See Note 5)

Output 2

±5.0%

Output 3

±5.0%

Overshoot/undershoot

At turn-on

0%

Transient response

+5V (1.5A to 3A)

500mV max. dev.,

500µs recovery

Temperature coefficient All Outputs

±0.03%/°C, max.

Overvoltage protection

+5V output

6.25V ±0.75V

Output power limit

Primary power

75W input power limit

limited

50W output power limit

Short circuit protection

Yes, with auto-restart

Minimum output current (See Note 8)

4 Watts

INPUT SPECIFICATIONS

Input voltage range

Universal input

85 to 264VAC

120 to 370VDC

Input frequency range

47 to 440Hz

Maximum input

110VAC, cold start

7.5A

surge current

230VAC, cold start

15A

Safety ground

110VAC, 60Hz

0.66mA max.

leakage current

230VAC, 50Hz

1.2mA max.

EMC CHARACTERISTICS

Conducted emissions

EN55022, FCC part 15

Level B

Radiated emissions

EN55022, FCC part 15

Level B

ESD air

EN61000-4-2, level 3

Perf. criteria 2

ESD contact

EN61000-4-2, level 4

Perf. criteria 1

Surge

EN61000-4-5, level 3

Perf. criteria 1

Fast transients

EN61000-4-4, level 3

Perf. criteria 1

Radiated immunity

EN61000-4-3, level 3

Perf. criteria 2

Conducted immunity

EN61000-4-6, level 3

Perf. criteria 1

GENERAL SPECIFICATIONS

Hold-up time

110VAC input

16ms

230VAC input

100ms

Efficiency

110/230VAC input,

70% typical

40W output

65% min.

Isolation voltage

Input/output

3000VAC

Input/chassis

1500VAC

Switching frequency

Variable

20kHz, min.

Approvals and

VDE0805, EN60950, IEC950

standards

IEC1010, UL1950, BABT

(See Note 10)

CSA C22.2 No. 950

Weight

400g (14oz)

MTBF (See Note 8)

MIL-HDBK-217E, 25°C 230,000 hours

ENVIRONMENTAL SPECIFICATIONS

Thermal performance

0°C to 50°C ambient,

40W

(See Notes 6, 7)

convection cooled

0°C to 50°C ambient,

50W

20CFM forced air

50°C to 70°C ambient

Derate linearly

to 50% load

Peak (0°C to 50°C, max. 30s)

50W

Operating range,

0°C to +70°C

see derating curve

Non-operating

-40°C to +85°C

Relative humidity

Non-condensing

5% to 95% RH

Altitude

Operating

10,000 feet max.

Non-operating

30,000 feet max.

Vibration (See Note 9)

5Hz to 500Hz

2.4G rms approx.