20IMX4-03-8 Просмотр технического описания (PDF) - Bel Fuse Inc.

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производитель

20IMX4-03-8

4 Watt DC-DC Converters

Bel Fuse Inc. 

IMX4 Series Data Sheet

4 Watt DC-DC Converters

Immunity to Environmental Conditions

Table 9: Mechanical and climatic stress

Test Method

Standard

Ca Damp heat

steady state

IEC/EN 60068-2-78

MIL-STD-810D section 507.2

Ea Shock

(half-sinusoidal)

IEC/EN 60068-2-27 1

MIL-STD-810D section 516.3

Eb Bump

(half-sinusoidal)

IEC/EN 60068-2-29

MIL-STD-810D section 516.3

Fc Vibration

(sinusoidal)

IEC/EN 60068-2-6

Fh Vibration,

broad-band

random

(digital control)

IEC/EN 60068-2-64

Kb Salt mist, cyclic

IEC/EN 60068-2-52

(sodium chloride

NaCl solution)

Test conditions

Temperature:

Relative humidity:

Duration:

40 ±2 °C

93 +2/-3 %

56 days

Acceleration amplitude:

Bump duration:

Number of bumps:

100 gn = 981 m/s2

6 ms

18 (3 each direction)

Acceleration amplitude:

Bump duration:

Number of bumps:

40 gn = 392 m/s2

6 ms

6000 (1000 each direction)

Acceleration amplitude:

Frequency (1 Oct/min):

Test duration:

0.35 mm (10 to 60 Hz)

5 gn = 49 m/s2 (60 to 2000 Hz)

10 to 2000 Hz

7.5 h (2.5 h each axis)

Acceleration spectral density:

Frequency band:

Acceleration magnitude:

Test duration:

0.05 g n2/Hz

10 to 500 Hz

4.9 gn rms

3 h (1 h each axis)

Concentration:

Duration:

Storage:

Cycles and storage duration:

5% (30 °C)

2 h per cycle

40 °C, 93% rel. humidity

3 days, 22 h per cycle

1 Covers also EN 50155/EN 61373 category 1, class B, body mounted (= chassis of coach)

Status

Converter

not

operating

Converter

operating

Converter

operating

Converter

operating

Converter

operating

Converter

not

operating

Temperatures

Table 10: Temperature specifications, valid for air pressure of 800 to 1200 hPa (800 to 1200 mbar)

Temperature

Standard (-8)

Unit

Characteristics

Conditions

min

max

TA Ambient temperature Operational 1

–40

85

°C

TC Case temperature

–40

105

TS Storage temperature

Non operational

–55

105

1 See Thermal Considerations

Failure Rates

Table 11: MTBF

MTBF

40IMX4-05-8 (MIL-HDBK-217F)

40IMX4-1212-8 (Bellcore)

Ground benign

TC = 40 °C

890 000

3 535 000

Ground fixed

Ground mobile

Unit

TC = 40 °C

TC = 70 °C

TC = 50 °C

440 000

247 000

362 000

h

1 768 000

917 000

476 000

BCD20006-G Rev AE, 16-Sep-2015

MELCHER

The Power Partners.

Page 10 of 12

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