Hitachi HDS725050KLA360 Specifications - Page 66
DC power requirements
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7.2.2 Corrosion test The drive shows no sign of corrosion inside and outside of the hard disk assembly and is functional after being subjected to seven days at 50°C with 90% relative humidity. 7.3 DC power requirements Damage to the drive electronics may result if the power supple cable is connected or disconnected to the legacy power connector while power is being applied to the drive (no hot plug/unplug is alloweed). If SATA power supply cable is connected or disconnected to the SATA power connector, hot plug/unplug is allowed. 7.3.1 Input voltage Table 46: Input voltage Input voltage supply During run and spin up Absolute max spike voltage1 Supply rise time +5 V 5 V ± 5% -0.3 to 7 V 0 to 5 sec +12 V 12 V + 10% -8% -0.3 to 15 V 0 to 5 sec 1To avoid damage to the drive electronics, power supply voltage spikes must not exceed specifications. 7.3.2 Power supply current (typical) Table 47: Power supply current of PATA model Power supply current of PATA model +5 Volts [mA] +12 Volts [mA] Total [W] (values in milliamps. RMS) Idle average Idle ripple (peak-to-peak) Low RPM idle Low RPM idle ripple Unload idle average Unload idle ripple Random R/W average 1 Random R/W peak Silent R/W average Silent R/W peak Start up (max) Standby average Sleep average Pop Mean Std Dev Pop Mean Std Dev 380 12 590 12 9.0 330 40 630 20 200 7 280 10 4.4 220 30 380 20 200 7 480 13 6.8 220 35 600 20 560 9 850 20 13.0 1420 50 2100 60 610 9 660 15 11.0 1420 50 1350 40 1100 50 2000 75 150 9 20 3 1.0 100 8 20 3 0.7 Except for a peak of less than 100 ms duration 1 Random seeks at 40% duty cycle 2 Seek duty = 30%, W/R duty = 45%, Idle duty = 25% Deskstar 7K500 and Deskstar E7K500 Hard Disk Drive Specification 52
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