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NTC2R5D09MF2E3C035BSN

更新时间： 2024-11-16 16:54:51
品牌 Logo 应用领域
风华高科 - FH /
页数 文件大小 规格书
14页 1511K
描述
插件NTC

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中文翻译

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NTC2R5D09MF2E3C035BSN 数据手册

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NTC  
NTC THERMISTOR  
OUTLINE  
This is a Negative Temperature Coefficient Resistor Whose  
resistance changes with ambient temperature changes.  
Thermistor comprises 2or 4 kinds of metal oxides of iron,  
nickel,cobalt, manganese and copper, being shaped and  
2
4
1200  
1500  
Sintered at high temperature(1200 to 1500  
)
Critical Technical Parameters of NTC Thermistor  
Rt---Zero Power Resistance  
NTC  
Rt  
It's a resistance which is got at a fixed temperature on a  
basis of a testing power which causes resistance to Vary in a  
range which can be ignored in relation to the total testing eror.  
R25 ---Rated Zero Power Resistance  
R25  
The design resistance of the thermistor usually refers to the  
resistance value got at Zero-power at 25 , which is usually  
indicated on the thermistor.  
25  
B Value  
B
B
B
value stands for the thermal exponent at a negative  
temperature coefficient. lt's defined as a ratio of the balance  
between the natural logarithms of resistance values at zero-  
power to the balance between the reciprocals of the two  
temperatures.The formula is as below:  
1 1  
T1 T2  
RT1  
RT2  
T1 T2  
T2 T1  
RT1  
RT2  
(
)
=
/
B=ln  
ln  
1
1
RT2 T1 T2  
RT1  
T1 T2  
T2 T1  
RT1  
RT2  
(
)
=
/
B=ln  
ln  
In this formula: RT1 is the resistance at Zero-power when the  
temperature is T1  
RT1  
RT2  
T1  
T2  
RT2 is the resisrtance at Zero-power when the temperature is  
T2 Unless otherwise specified, B value is got by calculating  
B
25 ( 298.  
the Zero-power resistances at 25  
( 298.15K ) and 85  
15K )  
85 ( 358.15K )  
, B  
( 358.15K ) . It's not a firm constant within the range of  
working temperature.  
Resistance-to-Temperature Coefficient at Zero-power  
It refers to the ratio of changes of a thermistor. Resistance  
value at Zero-powerwhen The temperature, to the resistance  
value at Zero-power The formula is as below:  
T
DRT  
1
RT DT  
B
T2  
=
T
=
DRT  
1
RT DT  
B
T2  
=
=
T
In this formula, " " stands for the resistance-temperature  
coefficient at Zero-power when the temperature is T:  
RT stands for the resistance value at Zero-power when the  
temperature is T  
T
T
T
RT-  
T
(
K
)
T stands for thetemperature(in K)  
B
B
B stands for B value  
138  
1234567...14

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