89H32T8G2ZCBLG IDT, 89H32T8G2ZCBLG Datasheet - Page 18

• Manufacturer Part Number: 89H32T8G2ZCBLG
• Description: Peripheral Drivers & Components - PCIs
• Manufacturer: IDT

Specifications of 89H32T8G2ZCBLG

• Product Category: Peripheral Drivers & Components - PCIs
• Rohs: yes
• Part # Aliases: IDT89H32T8G2ZCBLG

Thermal Considerations
that is relevant to the thermal performance of the PES32T8G2 switch.
IDT 89HPES32T8G2 Data Sheet
This section describes thermal considerations for the PES32T8G2 (23mm
Note: It is important for the reliability of this device in any user environment that the junction temperature not exceed the T
specified in Table 17. Consequently, the effective junction to ambient thermal resistance (
maintained below the value determined by the formula:
Given that the values of T
achieve the desired
provided in Table 17), thermal resistance of the chosen adhesive (
circuit board (number of layers and size of the board). It is strongly recommended that users perform their own thermal analysis for their own
board and system design scenarios.
θ
Symbol
JA(effective)
T
T
A(max)
J(max)
θ
θ
P
JB
JC
θ
JA
= (T
J(max)
Effective Thermal Resistance, Junction-to-Ambient
θ
- T
JA
Thermal Resistance, Junction-to-Board
Thermal Resistance, Junction-to-Case
A(max)
is left up to the board or system designer, but in general, it can be achieved by adding the effects of
J(max)
Table 17 Thermal Specifications for PES32T8G2, 23x23 mm FCBGA484 Package
Power Dissipation of the Device
)/P
Junction Temperature
Ambient Temperature
, T
Parameter
A(max)
, and P are known, the value of desired
18 of 39
θ
2
CS
Value
FCBGA484 package). The data in Table 17 below contains information
15.2
0.15
9.71
125
), that of the heat sink (
8.5
7.1
3.1
70
85
θ
JA
Units
becomes a known entity to the system designer. How to
Watts
o
o
o
o
o
C/W
C/W
C/W
C/W
C/W
o
o
o
C
C
C
θ
JA
) for the worst case scenario must be
θ
SA
Maximum for commercial-rated products
Maximum for industrial-rated products
), amount of airflow, and properties of the
Conditions
1 m/S air flow
2 m/S air flow
Zero air flow
Maximum
Maximum
November 28, 2011
J(max)
θ
JC
(value
value