Hitachi HTS541040G9AT00 Specifications - Page 39

DC power requirements - hard drive enclosure for

Page 39 highlights

6.1.1.1 Corrosion test The drive must be functional and show no signs of corrosion after being exposed to a temperature humidity stress of 50°C/90% RH (relative humidity) for one week followed by a temperature and humidity drop to 25°C/40%RH in 2 hours. 6.1.2 Radiation noise The drive shall work without degradation of the soft error rate under the following magnetic flux density limits at the enclosure surface. Table 15: Magnetic flux density limits Frequency (KHz) Limits (uT RMS) 0-60 500 61-100 250 101-200 100 201-400 50 6.1.3 Conductive noise The disk drive shall work without soft error degradation in the frequency range from DC to 20 Mhz injected through any two of the mounting screw holes of the drive when an AC current of up to 45 mA (p-p) is applied through a 50-ohm resistor connected to any two mounting screw holes. 6.1.4 Magnetic fields The disk drive will withstand radiation and conductive noise within the limits shown below. The test method is defined in the Noise Susceptibility Test Method specification, P/N 95F3944. 6.2 DC power requirements Connection to the product should be made in a safety extra low voltage (SELV) circuits. The voltage specifications are applied at the power connector of the drive. Table 16: DC power requirements Item Nominal supply Supply voltage Power supply ripple (0-20 MHz) 1 Tolerance2 Supply rise time Requirements +5Volt DC -0.3 Volt to 6.0 Volt 100mV p-p max. ±5% 1 - 100 ms Watts (RMS typical) Performance Idle average3 All models 2.0 Travelstar 5K100 Hard Disk Drive Specification 25

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Travelstar 5K100 Hard Disk Drive Specification
25
6.1.1.1
Corrosion test
The drive must be functional and show no signs of corrosion after being exposed to a temperature humidity stress
of 50°C/90% RH (relative humidity) for one week followed by a temperature and humidity drop to 25°C/40%RH
in 2 hours.
6.1.2
Radiation noise
The drive shall work without degradation of the soft error rate under the following magnetic flux density limits at
the enclosure surface.
6.1.3
Conductive noise
The disk drive shall work without soft error degradation in the frequency range from DC to 20 Mhz injected
through any two of the mounting screw holes of the drive when an AC current of up to 45 mA (p-p) is applied
through a 50-ohm resistor connected to any two mounting screw holes.
6.1.4
Magnetic fields
The disk drive will withstand radiation and conductive noise within the limits shown below. The test method is
defined in the Noise Susceptibility Test Method specification, P/N 95F3944.
6.2
DC power requirements
Connection to the product should be made in a safety extra low voltage (SELV) circuits. The voltage specifications
are applied at the power connector of the drive.
Table 15: Magnetic flux density limits
Frequency (KHz)
Limits (uT RMS)
0–60
500
61–100
250
101–200
100
201–400
50
Table 16: DC power requirements
Item
Requirements
Nominal supply
+5Volt DC
Supply voltage
–0.3 Volt to 6.0 Volt
Power supply ripple (0–20 MHz)
1
100mV p-p max.
Tolerance
2
±5%
Supply rise time
1 - 100 ms
Watts (RMS typical)
All models
Performance Idle average
3
2.0