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(5) 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)
SATA interface
transfer speed
Gen1 (1.5 Gbps) Gen2 (3.0 Gbps) Gen1 (1.5 Gbps) Gen2 (3.0 Gbps)
Spin up (*1) 1.1 A 1.1 A 5.5 W 5.5 W
Idle (*6) 160 mA 160 mA 0.80 W 0.80 W
R/W (on track) (*2) 420 mA 460 mA 2.1 W 2.3 W
Seek (*5) 460 mA 500 mA 2.3 W 2.5 W
Standby (*6) 26 mA 26 mA 0.13 W 0.13 W
Sleep (*6) 26 mA 26 mA 0.13 W 0.13 W
Energy
Efficiency (*4)
e rank (0.0067 W/GB): MHW2120BK
e rank (0.0100 W/GB): MHW2080BK
d rank (0.0133 W/GB): MHW2060BK
*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.
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