參數(shù)資料
型號： VSC7123
廠商： Vitesse Semiconductor Corporation.
英文描述： Rotary Switch; No. of Switch Positions:10; Circuitry:SPDT; Contact Current Max:1.5A; Indexing:30 ; Contact Rating:1.5A at 28VDC; Mounting Type:Panel; Number of Positions:10; Switch Features:30 degrees Indexing; Switch Function:SPDT
中文描述： 10位收發(fā)器，光纖通道和千兆以太網(wǎng)
文件頁數(shù)： 17/18頁
文件大?。?/td> 208K
代理商： VSC7123
V
ELOCITY
TM
VITESSE
VSC7123
10-Bit Transceiver for Fibre
Channel and Gigabit Ethernet
Data Sheet
G52212-0, Rev 4.3
03/25//01
Page 17
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano
Camarillo, CA 93012
Tel: (800) VITESSE
FAX: (805) 987-5896
Email: prodinfo@vitesse.com
Internet: www.vitesse.com
Package Thermal Considerations
The VSC7123 is packaged in a 14mm, thermally-enhanced PQFP with an internal heat spreader a 10 mm,
thermally enhanced PQFP and a 10mm cavity-down, exposed pad TQFP. These packages use industry-standard
EIAJ footprints, but have been enhanced to improve thermal dissipation. The construction of the packages is
shown in Figure 10.
Figure 10: PQFP Package Cross Section
Table 6: Thermal Resistance
The VSC7123 is designed to operate with a case temperature up to 95
o
C. The user must guarantee that the
case temperature specification is not violated. With the thermal resistances shown in Table 7, the 10mm
thermally-enhanced PQFP package can operate in still air ambient temperatures of 50
o
C [50
o
C = 95
o
C - 0.9W *
50 C/W]. The 14mm thermally-enhanced PQFP package can operate in still air ambient temperatures of 69
o
C
[69
o
C = 95
o
C - 0.9W * 29 C/W]. The TQFP package can operate in a still air ambient temperature of 59
o
C
[59
o
C = 95
o
C - 0.9W * 40 C/W]. If the ambient air temperature exceeds these limits, a form of cooling through
a heatsink or an increase in airflow must be provided.
Moisture Sensitivity Level
This device is rated at a Moisture Sensitivity Level 3 rating with maximum floor life of 168 hours at 30
o
C,
60% relative humidity. Please refer to Application Note AN-20 for appropriate handling procedures.
Symbol
Description
10mm
PQFP
14mm
PQFP
10mm
TQFP
Units
θ
jc
θ
ca
Thermal resistance from junction-to-case
10
9.5
7.0
o
C/W
Thermal resistance from case-to-ambient in still air including
conduction through the leads.
50
29
40
o
C/W
θ
ca-100
θ
ca-200
θ
ca-400
θ
ca-600
Thermal resistance from case-to-ambient with 100 LFM airflow
41
26
38
o
C/W
o
C/W
o
C/W
o
C/W
Thermal resistance from case-to-ambient with 200 LFM airflow
37
24
35
Thermal resistance from case-to-ambient with 400 LFM airflow
32
21
33
Thermal resistance from case-to-ambient with 600 LFM airflow
28
18
30
Internal Heat Spreader
Die
Plastic Molding Compound
Lead
Bond Wire
Insulator
相關(guān)PDF資料
PDF描述
VSC7123RD 10-Bit Transceiver for Fibre Channel and Gigabit Ethernet
VSC7123QU Development kit; Kit Contents:Evaluation Board; For Use With:CS4955A; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No RoHS Compliant: No
VSC7124 Rotary Switch; No. of Switch Positions:4; Circuitry:DPDT; Contact Current Max:1.5A; Indexing:30 ; Contact Rating:1.5A at 28VDC; Mounting Type:Panel; Number of Positions:4; Switch Features:30 degrees Indexing; Switch Function:DPDT
VSC7124QM Quad Port Bypass Circuit
VSC7125 Rotary Switch; Contact Current Max:1.5A; No. of Poles:4; No. of Switch Positions:11; Indexing:30 ; No. of Decks:4; Switch Terminals:Solder Lug; Circuitry:SPDT; Mounting Type:Panel; Switch Features:30 degrees Indexing RoHS Compliant: Yes
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
VSC7123QN 制造商:VITE 功能描述:
VSC7123QN/C 制造商:Vitesse Semiconductor Corporation 功能描述:
VSC7123QU 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:10-Bit Transceiver for Fibre Channel and Gigabit Ethernet
VSC7123RD 制造商:Vitesse Semiconductor Corporation 功能描述:
VSC7123RD2 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecomm/Datacomm
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