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| 型号： | CSRF0805FT10L0 |
| 厂商： | Stackpole Electronics Inc |
| 文件页数： | 3/3页 |
| 文件大小： | 0K |
| 描述： | RES 0.01 OHM 1/2W 1% 0805 SMD |
| 特色产品： | CSRF0805 Chip Resistors |
| 标准包装： | 1 |
| 系列： | CSRF |
| 电阻（欧姆）： | 0.01 |
| 功率（瓦特）： | 0.5W，1/2W |
| 复合体： | 金属箔 |
| 特点： | 电流感应，耐燃 |
| 温度系数： | ±50ppm/°C |
| 容差： | ±1% |
| 封装/外壳： | 0805（2012 公制） |
| 尺寸/尺寸： | 0.079" L x 0.049" W（2.00mm x 1.25mm） |
| 高度： | 0.032"（0.80mm） |
| 端子数： | 2 |
| 包装： | 标准包装 |
| 其它名称： | CSRF0805FT10L0DKR |
CSRF Series
Foil on Ceramic Current Sensing Chip Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
High Power Chip Resistors and Thermal Management
Stackpole has developed several surface mount resistor series in addition to our current sense resistors,
which have had higher power ratings than standard resistor chips. This has caused some uncertainty and
even confusion by users as to how to reliably use these resistors at the higher power ratings in their designs.
The data sheets for the RHC, RMCP, RNCP, CSR, CSRN, CSRF, CSS, and CSSH state that the rated
power assumes an ambient temperature of no more than 100oC for the CSS / CSSH series and 70oC for all
other high power resistor series. In addition, IPC and UL best practices dictate that the combined
temperature on any resistor due to power dissipated and ambient air shall be no more than 105oC . At first
glance this wouldn’t seem too difficult, however the graph below shows typical heat rise for the CSR1206 100
milliohm at full rated power. The heat rise for the RMCP and RNCP would be similar. The RHC with its
unique materials, design, and processes would have less heat rise and therefore would be easier to
implement for any given customer.
The 102oC heat rise shown here would indicate there will be additional thermal reduction techniques needed
to keep this part under 105oC total hot spot temperature if this part is to be used at 0.75 watts of power.
However, this same part at the usual power rating for this size would have a heat rise of around 72oC. This
additional heat rise may be dealt with using wider conductor traces, larger solder pads and land patterns
under the solder mask, heavier copper in the conductors, vias through PCB, air movement, and heat sinks,
among many other techniques. Because of the variety of methods customers can use to lower the effective
heat rise of the circuit, resistor manufacturers simply specify power ratings with the limitations on ambient air
temperature and total hot spot temperatures and leave the details of how to best accomplish this to the
design engineers. Design guidelines for products in various market segments can vary widely so it would be
unnecessarily constraining for a resistor manufacturer to recommend the use of any of these methods over
another.
Note:
The final resistance value can be affected by the board layout and assembly process, especially the size of the
mounting pads and the amount of solder used. This is especially notable for resistance values ≤ 50 mΩ.
This should be taken into account when designing.
Rev Date: 02/05/2014
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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相关代理商/技术参数 |
参数描述 |
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| CSRF1206FT10L0 | 功能描述:RES .01OHM 1/2W 1% 1206 SMD RoHS:是 类别:电阻器 >> 芯片电阻 - 表面安装 系列:CSRF 产品目录绘图:1% Thick Film Chip Material 1% Thick Film Chip 标准包装:1 系列:ERJ 电阻（欧姆）:105k 功率（瓦特）:0.5W，1/2W 复合体:厚膜 特点:- 温度系数:±100ppm/°C 容差:±1% 封装/外壳:1210（3225 公制） 尺寸/尺寸:0.126" L x 0.098" W（3.20mm x 2.50mm） 高度:0.028"（0.70mm） 端子数:2 包装:Digi-Reel® 产品目录页面:2239 (CN2011-ZH PDF) 其它名称:P105KAADKR |
| CSRF1206FT50L0 | 制造商:SEI Stackpole Electronics Inc 功能描述:FOIL CERAMIC CURRENT RES,1206,1/2W,0.05,1%,TR,HAZMAT - Tape and Reel |
| CSRF1206FT5L00 | 功能描述:RES .005OHM 1/2W 1% 1206 SMD RoHS:是 类别:电阻器 >> 芯片电阻 - 表面安装 系列:CSRF 产品目录绘图:1% Thick Film Chip Material 1% Thick Film Chip 标准包装:1 系列:ERJ 电阻（欧姆）:105k 功率（瓦特）:0.5W，1/2W 复合体:厚膜 特点:- 温度系数:±100ppm/°C 容差:±1% 封装/外壳:1210（3225 公制） 尺寸/尺寸:0.126" L x 0.098" W（3.20mm x 2.50mm） 高度:0.028"（0.70mm） 端子数:2 包装:Digi-Reel® 产品目录页面:2239 (CN2011-ZH PDF) 其它名称:P105KAADKR |
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