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1.3 Power Requirements
C141-E203-01EN 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)
MHT2080BH, MHT2060BH,
MHT2040BH
MHT2080BH, MHT2060BH,
MHT2040BH
Spin up (*1) 1.0 A 5.0 W
Idle (*6) 170 mA 0.85 W
R/W (on track) (*2) Read 460 mA / Write 460mA Read 2.3 W / Write 2.3 W
Seek (*5) 500 mA 2.5 W
Standby (*6) 50 mA 0.25 W
Sleep (*6) 20 mA 0.1 W
Energy
Efficiency (*4)
— 0.011 W/GB
(rank E / MHT2080BH)
0.014 W/GB
(rank E / MHT2060BH)
0.021 W/GB
(rank D / MHT2040BH)
*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 nominal 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.