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1.3 Power Requirements
C141-E218 1-7
(4) Current Requirements and Power Dissipation
Table 1.3 lists the current and power dissipation (typical).
Table 1.3 Current and power dissipation
Typical RMS Current Typical Power (*3)
Spin up (*1) 0.9 A 4.5 W
Idle 100 mA 0.5 W
R/W (on track) (*2) 320 mA 1.6 W
Seek (*5) 380 mA 1.9 W
Standby 40 mA 0.2 W
Sleep 20 mA 0.1 W
Energy
Efficiency (*4)
—
0.004 W/GB (rank E / MHV2120AT)
0.005 W/GB (rank E / MHV2100AT)
0.006 W/GB (rank E / MHV2080AT)
0.008 W/GB (rank E / MHV2060AT)
0.013 W/GB (rank D / MHV2040AT)
*1 Maximum current at starting spindle motor.
*2 Current and power level when the operation (command) that accompanies a
transfer of 63 sectors is executed 3 times in 100 ms
*3 Power requirements reflect typical values for +5 V power.
*4 Energy efficiency based on the Law concerning the Rational Use of Energy
indicates the value obtained by dividing power consumption by the storage
capacity. (Japan only)
*5 The seek average current is specified based on three operations per 100
msec.