PMC-Sierra PM5349 manual Ordering and Thermal Information, Ordering Information, Theta Ja Theta Jc

Models: PM5349

1 252
Download 252 pages 6.23 Kb
Page 248
Image 248

 

 

PMC-Sierra, Inc.

PM5349 S/UNI-QUAD

 

S/UNI-QUAD

 

 

 

 

 

 

 

DATASHEET

 

 

 

 

 

 

 

 

 

 

 

 

PMC-971239

ISSUE 6

 

SATURN USER NETWORK INTERFACE (155-QUAD)

 

 

 

 

 

 

19 ORDERING AND THERMAL INFORMATION

Table 22: Ordering Information

PART NO.

DESCRIPTION

 

PM5349-BI

304-pin Ball Grid Array (SBGA)

 

 

Table 23: Thermal Information

 

 

 

 

 

PART NO.

AMBIENT TEMPERATURE

Theta Ja

Theta Jc

PM5349-BI

-40°C to 85°C

22 °C/W

1 °C/W

30

 

 

 

 

 

25

 

 

 

 

 

20

 

 

 

 

 

15

 

 

 

 

 

10

 

 

 

 

 

5

 

 

 

 

 

0

 

 

 

 

 

Conv

100

200

300

400

500

Dense Board JEDEC Board

The junction temperature (Tj) is less than 105°C for a ambient temperature (Ta) of 60°C and a 300LFM of airflow. The device must operate at Ta=70°C with 100LFM and must not be damaged with Ta=70°C and no airflow. This assumes a dense board and a ThetaJA of 16.

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

242

Page 248
Image 248
PMC-Sierra PM5349 manual Ordering and Thermal Information, Ordering Information, Theta Ja Theta Jc