PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
Table 19
- Thermal information – Theta Ja vs. Airflow
Forced Air (Linear Feet per Minute)
Theta Ja @ specified
power
Convection 100
200
300
400
500
Dense Board
21.9
19.2
13.0
17.4
16.3
15.8
15.6
JEDEC Board
14.7
11.8
11.0
10.4
10.0
Figure 38
- Theta Ja vs. Airflow Plot
PM5363-BI Theta Ja vs. Airflow
30
20
10
0
Conv 100 200 300 400 500
Airflow (Linear Feet per Minute)
Dense Board
JEDEC Board
Notes on Theta Ja vs. Airflow:
1. Dense Board – Board with 3x3 array of the same device with spacing of 4mm
between device. 6 layer board (3 signal layers, 3 power layers). Chart
represents device in the center of the array. Chart represents values obtained
through simulation.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
432
PMC [ PMC-SIERRA, INC ]
