PM4351(2001) Просмотр технического описания (PDF) - PMC-Sierra

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Компоненты Описание

производитель

PM4351
(Rev.:2001)

Combined E1/T1/J1 Transceiver/Framer

PMC-Sierra 

STANDARD PRODUCT

DATA SHEET

PMC-1970624

ISSUE 10

PM4351 COMET

COMBINED E1/T1 TRANSCEIVER

18 ORDERING AND THERMAL INFORMATION

Table 123 - Ordering Information

Part No.

PM4351-RI

PM4351-NI

Description

80-Pin Metric Plastic Quad Flat Pack (MQFP)

81-Ball Chip Array Ball Grid Array (CABGA)

Table 124 - Thermal Information

Forced Air (Linear Feet per Minute)

Part No.

Case

Theta J-A

Temperature

Conv 100 200 300 400 500

PM4351-RI -40°C to

85°C

PM4351-NI -40°C to

85°C

Dense Board1 62.1 54.8 49.1 45.0 42.4 41.1

JEDEC Board2 43.2 40.7 39.2 38.5 38.2 38.0

Dense Board3 99.5 92.9 87.8 84.0 81.0 78.5

JEDEC Board4 47.8 45.8 44.4 43.5 43.0 42.7

1. - Dense Board is defined as a 3S3P board and consists of a 3x3 array of

PM4351-RI devices located as close to each other as board design rules allow. All

PM4351-RI devices are assumed to be dissipating 0.416 Watts. Theta J-A listed is

for the device in the middle of the array.

2. - JEDEC Board Theta J-A is the measured value for a single thermal device in the

same package on a 2S2P board following EIA/JESD 51-3.

3. - Dense Board is defined as a 3S3P board and consists of a 3x3 array of

PM4351-NI devices located as close to each other as board design rules allow. All

PM4351-NI devices are assumed to be dissipating 0.416 Watts. Theta J-A listed is

for the device in the middle of the array.

4. - JEDEC Board Theta J-A is the measured value for a single thermal device in the

same package on a 2S2P board following EIA/JESD 51-3.

PROPRIETARY AND CONFIDENTIAL

458

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