- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98083 > SME5410MCZ-270 64-BIT, 270 MHz, RISC PROCESSOR, XMA PDF資料下載
參數(shù)資料
| 型號(hào)： | SME5410MCZ-270 |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 64-BIT, 270 MHz, RISC PROCESSOR, XMA |
| 封裝： | 130 X 100 MM, 45 MM HEIGHT MODULE |
| 文件頁數(shù)： | 15/30頁 |
| 文件大小： | 183K |
| 代理商： | SME5410MCZ-270 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當(dāng)前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁
22
SME5410MCZ-270
270 MHz CPU, 256 Kbyte E-cache, UPA, 66 MHz PCI
UltraSPARC-IIi CPU Module
July 1998
Sun Microsystems, Inc
Case Temperature Method
The relationship between case temperature and junction temperature is described in the following thermal
equation.
If Tc is known, then Tj can be calculated:
Tj = Tc + (Pd x
θjc)
There is good tracking between the case temperature and the heat sink temperature.
Heatsink Temperature Method (the preferred method)
Measuring the heat sink temperature is sometimes easier than measuring the case temperature. This method
provides accurate results for most designs. If the heatsink temperature (Ts) is known then the following ther-
mal equation can be used to estimate the junction temperature:
Tj = Ts + [Pd (
θjc + θcs)]
Airow Cooling Estimate Method
The relationship between air temperature and junction temperature is described in the following thermal
equation:
Tj = Ta + [Pd (
θjc + θcs + θsa)]
Determination of the ambient air temperature (Ta) and the “free-stream” air velocity is required in order to
apply the airow method. The section "Heatsink-to-Air Thermal Resistance" on page 23, uses the air velocity
direction relative to the heatsink orientation to nd the thermal resistance between the heat sink and air (
θsa).
Note that the airow velocity can be measured using a velocity meter. Alternatively it may be determined by
knowing the performance of the fan that is supplying the airow. Calculating the airow velocity is difcult.
It is subject to interpretation.
Note:
The Airflow Cooling Estimate method is an estimate. Use it solely when an approximate value
suffices. Accuracy can only be assured using the Case Temperature method or the Heatsink
Temperature method. Apply these methods for the greatest accuracy.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SME5434PCI-440 | 64-BIT, 440 MHz, RISC PROCESSOR, XMA |
| SME5434PCI-480 | 64-BIT, 480 MHz, RISC PROCESSOR, XMA |
| SMFR-29C516ESC | 16-BIT ERROR DETECT AND CORRECT CKT, QFP100 |
| SMJ320C26FJ | 16-BIT, 40 MHz, OTHER DSP, CQCC68 |
| SMJ320C31KGDM40B | 32-BIT, 40 MHz, OTHER DSP, UUC132 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-ME6 | 制造商:Phoenix Contact 功能描述:Lock, switching, ME terminal |
| SME6.3T471M8X16LL | 制造商:Texas Instruments 功能描述:EA471-6R3M85 |
| SME6.3VB101M6X11LL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MINIATURE, GENERAL PURPOSE, SOLVENT PROOF |
| SME6.3VB102M10X12LL | 制造商:United Chemi-Con Inc 功能描述:Capacitor, Aluminium, 1mf, 6.3V, 20±% |
| SME6.3VB103M16X31LL | 功能描述:鋁質(zhì)電解電容器 - 帶引線 10KuF 6.3V RoHS:否 制造商:Kemet 引線類型: 電容:220 uF 容差:20 % 電壓額定值:25 V 工作溫度范圍: 端接類型:Radial 外殼直徑:8 mm 外殼長度:11 mm 引線間隔:5 mm 產(chǎn)品:General Purpose Electrolytic Capacitors 封裝:Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。