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1.3  Power Requirements 
C141-E224 
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) 
1.0 A 
5.0 W 
Idle (*6) 
120 mA 
0.60 W 
R/W (on track) (*2) 
380 mA 
1.9 W 
Seek (*5) 
420 mA 
2.1 W 
Standby (*6) 
26 mA 
0.13 W 
Sleep (*6) 
26 mA 
0.13 W 
Energy  
Efficiency (*4) 
— 
0.006 W/GB (rank E / MHV2100BH) 
0.008 W/GB (rank E / MHV2080BH) 
0.010 W/GB (rank E / MHV2060BH) 
0.015 W/GB (rank D / MHV2040BH) 
 
*1 
Maximum current and power 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. 
*6      IPM mode:  Slumber mode.