Device Overview
(3) Current Requirements and Power Dissipation
Table 1.3 lists the current and power dissipation.
Table 1.3 Current and power dissipation
| Typical RMS Current | Typical Power (*3) | ||
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| MHJ Series | MHK Series | MHJ Series | MHK Series |
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Spin up (*1) | 0.9 A | 0.9 A | 4.5 W | 4.5 W |
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Idle | 170 mA | 170 mA | 0.85 W | 0.85 W |
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R/W (on track) (*2) | 460 mA | 460 mA | 2.3 W | 2.3 W |
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Seek (*5) | 460 mA | 460 mA | 2.3 W | 2.3 W |
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Standby | 56 mA | 56 mA | 0.28 W | 0.28 W |
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Sleep | 20 mA | 20 mA | 0.1 W | 0.1 W |
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Energy | — | — | 0.047 W/GB | 0.071 W/GB |
Consumption |
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Efficiency (*4) |
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*1 Current at starting spindle motor.
*2 At 30% disk accessing.
*3 Power requirements reflect nominal values for +5V power.
*4 Energy Consumption Efficiency =
Idle power dissipation / Total record capacity (GB)
*5 The seek average current is specified based on three operations per 100 msec.
(4) Current fluctuation (Typ.) at +5V when power is turned on
