參數(shù)資料
型號： 3D-22
廠商： Electronic Theatre Controls, Inc.
英文描述： THERMOPILE TYPE INFRARED SENSOR
中文描述： 熱電型紅外傳感器
文件頁數(shù)： 6/44頁
文件大?。?/td> 669K
代理商： 3D-22
6
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
B3350
B3400
B3650
1k
10k
100k
R
Temperature(1/ Tx10
3
)
THERMISTOR
"Thermistor" is the generic name given to
thermally sensitive resistors.
Negative temperature coefficient thermistor
is generally called as thermistor. Thermistor
is a semiconducting ceramic resistor
produced by sintering the materials at high
temperature and made mainly from metal
oxide.
Depending on the manufacturing method
and the structure, there are many shapes
and characteristics for various purposes
such as temperature measurement,
temperature compensation and etc.
The thermistor resistance values, unless
otherwise specified, are classified at a
standard temperature of 25 C.
B constant is calculated from the resistance
values at 25 C and 85 C.
The resistance of a temperature is solely a function
of its absolute temperature. Since electrical power
being dissipated within a temperature might heat
above its ambient temperature and thereby reduce
its resistance, it is necessary to test for resistance
with temperature. The resistance so measured is
called RT, which means the resistance at essentially
zero-power.
The mathematical expression which relates the
resistance and the absolute temperature of
a thermistor is as follows:
R
a
R
b
exp
B 1
T
1
1
T
2
B
T
2
R
a
R
b
B is a constant which depends on the
material of the thermistor
T
1
T
2
Where:
is the resistance at absolute temperature
is the resistance at absolute temperature
Unless otherwise specified,all values of B are
determined from measurements made at 25 C and
85 C.
The temperature coefficient of resistance
is expressed in the following equation:
100(%/
C)
Resistance -Temperature Characteristics
Dissipation factor
Dissipation factor ( ) is power in milliwatts
required to raise thermistor temperature 1 C.
Measured with thermistor suspended by its leads in
a specified environment.
Thermal time constant
Thermal time constant (
a
) is the time required by a
thermistor to change 63% of the difference between
its initial and final temperature.Measured with
thermistor suspended by its leads in specified
environment.
t:Raise temperature( C)
t
P :Power(mW)
95
87
63
a
2
a
3
a
5
a
Time (s)
(
相關(guān)PDF資料
PDF描述
3D125-12D12 300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit
3D3215Z-6 300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit
3D3215 MONOLITHIC 5-TAP 3.3V FIXED DELAY LINE
3D3215SERIES 300mA LDO Linear Regulators with Internal Microprocessor Reset Circuit
3D3428 MONOLITHIC 8-BIT PROGRAMMABLE DELAY LINE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
3D2-22LC 功能描述:熱敏電阻 - NTC 3ohms 8amps Clinch lead RoHS:否 制造商:EPCOS 電阻:10 kOhms 功率額定值:150 mW 容差:2 % 端接類型:Radial 系列:B57703M 工作溫度范圍:- 55 C to + 125 C
3D2-22LCS 功能描述:熱敏電阻 - NTC 3ohms 8amps Clinch Short Lead RoHS:否 制造商:EPCOS 電阻:10 kOhms 功率額定值:150 mW 容差:2 % 端接類型:Radial 系列:B57703M 工作溫度范圍:- 55 C to + 125 C
3D2-22LD 功能描述:熱敏電阻 - NTC 3ohms 8amps Straight Lead RoHS:否 制造商:EPCOS 電阻:10 kOhms 功率額定值:150 mW 容差:2 % 端接類型:Radial 系列:B57703M 工作溫度范圍:- 55 C to + 125 C
3D25UL 功能描述:斷路器 25A, D CHAR, 3POLE 480Y/277VAC,UL489 RoHS:否 制造商:Phoenix Contact 產(chǎn)品:Device Circuit Breakers 產(chǎn)品類型:Thermomagnetic 電流額定值:2 A 電壓額定值 AC:240 V, 277 V 電壓額定值 DC:50 V 極數(shù):1 Pole 執(zhí)行器類型:Slide 電路功能:Trip Free 系列:CB TM1 工作溫度范圍:- 30 C to + 60 C 照明:No
3D25UM 功能描述:斷路器 25A D Characteristic UL 508 3 POLE RoHS:否 制造商:Phoenix Contact 產(chǎn)品:Device Circuit Breakers 產(chǎn)品類型:Thermomagnetic 電流額定值:2 A 電壓額定值 AC:240 V, 277 V 電壓額定值 DC:50 V 極數(shù):1 Pole 執(zhí)行器類型:Slide 電路功能:Trip Free 系列:CB TM1 工作溫度范圍:- 30 C to + 60 C 照明:No
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*