Conducted Noise Immunity; Power Sequencing; Current Profiles; Figure 1. Current Profiles For 800Gb Standard And 400Gb High Endurance Models - Seagate ST400FM0093 Product Manual

6.3.1

Conducted noise immunity

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.
+3.3v = 150 mv pp from 100 Hz to 20 Mhz
+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.
6.3.2

Power sequencing

The drive does not require power sequencing. The drive protects against inadvertent writing during power-up and down.
6.3.3

Current profiles

The +12V and +5V current profiles for the Seagate 1200 SSD 2.5" drives are shown below.
Figure 1. Current profiles for 800GB standard and 400GB High Endurance models
Seagate 1200 SSD Product Manual, Rev. C 36