Tyfx Temperature Measurement Locations - Seagate Barracuda ST12550W Product Manual

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To confirm that required cooling for the Barracuda electronics and HDA is
provided, place the drive in its final mechanical configuration, perform
random write/read operations, and after the temperatures stabilize, measure
the case temperature of the components listed below.
Air-flow cooling
ST11950N and ST12550N single-ended drives
Card Component
TYFX Transmitter
TYFX Writer
TYFX LSI
TYFX VIC2
TYFX 1021
HDA housing
The air-flow pattern with which the temperature guidelines above were
generated is shown in Figure 6 (opposite direction). Local average air
velocity was 0.61 msec (120 lfpm) and inlet air temperature to the drive was
30°C (86°F).
The maximum allowable HDA case temperature is 60°C.
U5
U4
Figure 7. TYFX temperature measurement locations
Barracuda 1 and 2 Product Manual, Rev. C
Reference
U5
U35
U4
U20
U55
Figure 11
U35
U20
MTBF
500k hours
case temperature (°C)
57
66
60
59
57
48
U55