Seagate ST400FM0012, Product Manual

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Pulsar.2 Product Manual, Rev. B 17
100GB models in 6Gb operation
Typical power dissipation under idle conditions in 6Gb operation is 3.42 watts (11.67 BTUs per hour).
To obtain operating power for typical random write operations, refer to the following I/O rate curve (see Figure
6). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresp5
volt current, +12 volt current, and total watts on the vertical axis. To calculate BTUs per hour, multiply watts by
3.4123.
Figure 6. 100GB models (6Gb) DC current and power vs. input/output operations per second
2.9.1 Conducted noise
+5v = 250 mV pp from 100 Hz to 20 MHz.
+12v = 450 mV pp from 100 Hz to 100 KHz.
250 mV pp from 100 KHz to 20 MHz.
150 mV pp from 20 MHz to 80 MHz.
Noise is specified as a periodic and random distribution of frequencies covering a defined frequency. Maximum
allowed noise values given below are peak-to-peak measurements and apply at the drive power connector.
2.9.2 Voltage tolerance
Voltage tolerance (including noise):
+12V ±5%
+5V ±5%