Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

SI7900AEDN-T1-E3 Datasheet(PDF) 9 Page - Vishay Siliconix

Part # SI7900AEDN-T1-E3
Description  Dual N-Channel 20-V (D-S) MOSFET, Common Drain
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  VISHAY [Vishay Siliconix]
Direct Link  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

SI7900AEDN-T1-E3 Datasheet(HTML) 9 Page - Vishay Siliconix

Back Button SI7900AEDN-T1-E3 Datasheet HTML 4Page - Vishay Siliconix SI7900AEDN-T1-E3 Datasheet HTML 5Page - Vishay Siliconix SI7900AEDN-T1-E3 Datasheet HTML 6Page - Vishay Siliconix SI7900AEDN-T1-E3 Datasheet HTML 7Page - Vishay Siliconix SI7900AEDN-T1-E3 Datasheet HTML 8Page - Vishay Siliconix SI7900AEDN-T1-E3 Datasheet HTML 9Page - Vishay Siliconix SI7900AEDN-T1-E3 Datasheet HTML 10Page - Vishay Siliconix SI7900AEDN-T1-E3 Datasheet HTML 11Page - Vishay Siliconix SI7900AEDN-T1-E3 Datasheet HTML 12Page - Vishay Siliconix  
Zoom Inzoom in Zoom Outzoom out
 9 / 12 page
background image
Vishay Siliconix
AN822
Document Number 71681
03-Mar-06
www.vishay.com
3
THERMAL PERFORMANCE
Introduction
A basic measure of a device’s thermal performance is
the junction-to-case thermal resistance, R
θjc, or the
junction to- foot thermal resistance, R
θjf. This parameter
is measured for the device mounted to an infinite heat
sink and is therefore a characterization of the device
only, in other words, independent of the properties of the
object to which the device is mounted. Table 1 shows a
comparison of the PowerPAK 1212-8, PowerPAK SO-8,
standard TSSOP-8 and SO-8 equivalent steady state
performance.
By minimizing the junction-to-foot thermal resistance, the
MOSFET die temperature is very close to the tempera-
ture of the PC board. Consider four devices mounted on
a PC board with a board temperature of 45 °C (Figure 4).
Suppose each device is dissipating 2 W. Using the junc-
tion-to-foot thermal resistance characteristics of the
PowerPAK 1212-8 and the other SMT packages, die
temperatures are determined to be 49.8 °C for the Pow-
erPAK 1212-8, 85 °C for the standard SO-8, 149 °C for
standard TSSOP-8, and 125 °C for TSOP-6. This is a
4.8 °C rise above the board temperature for the Power-
PAK 1212-8, and over 40 °C for other SMT packages. A
4.8 °C rise has minimal effect on rDS(ON) whereas a rise
of over 40 °C will cause an increase in rDS(ON) as high
as 20 %.
Spreading Copper
Designers add additional copper, spreading copper, to
the drain pad to aid in conducting heat from a device. It
is helpful to have some information about the thermal
performance for a given area of spreading copper.
Figure 5 and Figure 6 show the thermal resistance of a
PowerPAK 1212-8 single and dual devices mounted on
a 2-in. x 2-in., four-layer FR-4 PC boards. The two inter-
nal layers and the backside layer are solid copper. The
internal layers were chosen as solid copper to model the
large power and ground planes common in many appli-
cations. The top layer was cut back to a smaller area and
at each step junction-to-ambient thermal resistance
measurements were taken. The results indicate that an
area above 0.2 to 0.3 square inches of spreading copper
gives no additional thermal performance improvement.
A subsequent experiment was run where the copper on
the back-side was reduced, first to 50 % in stripes to
mimic circuit traces, and then totally removed. No signif-
icant effect was observed.
TABLE 1: EQIVALENT STEADY STATE PERFORMANCE
Package
SO-8
TSSOP-8
TSOP-8
PPAK 1212
PPAK SO-8
Configuration
Single
Dual
Single
Dual
Single
Dual
Single
Dual
Single
Dual
Thermal Resiatance RthJC(C/W)
20
40
52
83
40
90
2.4
5.5
1.8
5.5
Figure 4. Temperature of Devices on a PC Board
2.4 °C/W
49.8 °C
PowerPAK 1212
20 °C/W
85 °C
Standard SO-8
PC Board at 45 °C
52 °C/W
149 °C
Standard TSSOP-8
40 °C/W
125 °C
TSOP-6


Similar Part No. - SI7900AEDN-T1-E3

ManufacturerPart #DatasheetDescription
logo
Vishay Siliconix
SI7900AEDN-T1-E3 VISHAY-SI7900AEDN-T1-E3 Datasheet
624Kb / 12P
   Dual N-Channel 20 V (D-S) MOSFET, Common Drain
01-Jan-2022
More results

Similar Description - SI7900AEDN-T1-E3

ManufacturerPart #DatasheetDescription
logo
Vishay Siliconix
SI7900EDN VISHAY-SI7900EDN Datasheet
51Kb / 5P
   Dual N-Channel 20-V (D-S) MOSFET, Common Drain
Rev. A, 02-Apr-01
SI6874EDQ VISHAY-SI6874EDQ Datasheet
68Kb / 5P
   Dual N-Channel 20-V (D-S) MOSFET, Common Drain
Rev. A, 14-Aug-00
SI7900AEDN VISHAY-SI7900AEDN_V01 Datasheet
624Kb / 12P
   Dual N-Channel 20 V (D-S) MOSFET, Common Drain
01-Jan-2022
SI7900AEDN-T1 VISHAY-SI7900AEDN-T1 Datasheet
540Kb / 12P
   Dual N-Channel 20-V (D-S) MOSFET, Common Drain
Rev. C, 07-Jul-08
SI7900AEDN VISHAY-SI7900AEDN Datasheet
73Kb / 5P
   Dual N-Channel 20-V (D-S) MOSFET, Common Drain
Rev. A, 07-Jun-03
SI6875DQ VISHAY-SI6875DQ Datasheet
57Kb / 4P
   Dual P-Channel 20-V (D-S) MOSFET, Common Drain
Rev. A, 12-Jun-00
SI7902EDN VISHAY-SI7902EDN Datasheet
54Kb / 5P
   Dual N-Channel 30-V (D-S) MOSFET, Common Drain
Rev. A, 18-Feb-02
SI8902AEDB VISHAY-SI8902AEDB Datasheet
251Kb / 11P
   N-Channel 24 V (D-S) MOSFET, Common Drain
01-Jan-2022
logo
Anachip Corp
AF4901P ANACHIP-AF4901P Datasheet
152Kb / 3P
   Dual P-Channel 30-V (D-S) Common Drain MOSFET
logo
Nexperia B.V. All right...
PMCM650CUNE NEXPERIA-PMCM650CUNE Datasheet
404Kb / 18P
   20 V, Common Drain N-channel Trench MOSFET
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com