NTC Thermistor
Features
This is a Negative Temperature Coefficient Resistor Whose resistance
changes with ambient temperature changes. Thermistor comprises 2 or 4
kinds of metal oxides of iron, nickel,cobalt, manganese and copper, being
shaped and Sintered at high temperature(1200℃ to 1500℃
)
Critical Technical Parameters of NTC Thermistor
* Rt---Resistance Value at Zero-power
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---Resistance Value at Rated Zero-power
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.
* Max. steady state current.I
max
.
The maximum allowable continuous current passing through thermistor at 25℃.
* Dissipation Coefficient δ
It's the ratio of the changes with a thermistor dissipation power, in a pre-set ambient temperature, to the changes with the
temperature. The formula is as below:δ =
△P/ △T
,δ changes in response when the ambient temperature changes, within the
ranges of the working temperature.
Applications
Conversion power supply, switch power, UPS power, Kinds of electric heter, electronic energy-saving lamps, electronic ballast
etc all kinds of power cicuit proterction of electronic equipments, filament proterction of CRT, bulb and other lighting lamps.
Part Numbering System
NTC
10
D-13
Negative Temperature
Cofficient Resistor
Resistance Value:10Ω
Diameter of Chip: Φ13
Circuit Protection
System
Specifications are subject to change without notice.
Page:1
NTC Thermistor
Electriacl Characteristics
Type Number
Zero Power
Resistance
At 25°C
Ω
Max.Steady
State
Current
At 25°C
A
Thermal
Dissipation
Constant
mW/°C
Thermal
Time
Constant
Sec
Operating
Temperature
Range
°C
6.5max
6.5max
5max
Package Dimensions
(mm)
D-5 Series Sensing NTC Thermistor
5D-5
10D-5
60D-5
200D-5
5
10
60
200
1
0.7
0.3
0.1
6
6
6
6
20
20
18
18
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
5±1
25
5±1
0.6/0.5
0.6/0.5
D-7 Series Sensing NTC Thermistor
5D-7
8D-7
10D-7
12D-7
16D-7
22D-7
33D-7
200D-7
3D-9
4D-9
5D-9
6D-9
8D-9
9D-9
10D-9
12D-9
16D-9
20D-9
22D-9
30D-9
33D-9
50D-9
60D-9
80D-9
120D-9
200D-9
400D-9
5
8
10
12
16
22
33
200
3
4
5
6
8
9
10
12
16
20
22
30
33
50
60
80
120
200
400
2
1
1
1
0.7
0.6
0.5
0.2
4
3
3
2
2
2
1
1
1
1
1
1
1
1
0.8
0.8
0.8
0.5
0.2
10
9
9
9
9
9
10
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
28
27
27
27
27
27
28
28
35
35
34
34
32
32
32
32
31
30
30
30
30
30
30
30
30
32
32
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
25
8.5max
8.5max
5.5max
5±1
25
5±1
0.6±0.1
0.6±0.1
D-9 Series Sensing NTC Thermistor
25
10.5max
10.5max
5.5max
7.5/5
25
7.5/5
0.6±0.1
0.6±0.1
Circuit Protection
System
Specifications are subject to change without notice.
25
Page:2
NTC Thermistor
Electriacl Characteristics
Zero Power
Resistance
At 25°C
Ω
Max.Steady
State
Current
At 25°C
A
Thermal
Dissipation
Constant
mW/°C
Thermal
Time
Constant
Sec
Operating
Temperature
Range
°C
Package Dimensions
(mm)
Type Number
D-15 Series Sensing NTC Thermistor
1.3D-15
1.5D-15
3D-15
5D-15
6D-15
7D-15
8D-15
10D-15
12D-15
15D-15
16D-15
20D-15
30D-15
47D-15
120D-15
0.7D-20
1.3D-20
3D-20
5D-20
6D-20
8D-20
10D-20
12D-20
16D-20
1D-25
1.5D-25
3D-25
5D-25
8D-25
10D-25
12D-25
16D-25
1.3
1.5
3
5
6
7
8
10
12
15
16
20
30
47
120
0.7
1.3
3
5
6
8
10
12
16
1
1.5
3
5
8
10
12
16
8
8
7
6
5
5
5
5
5
4
4
4
3
3
1.8
11
9
8
7
6
6
6
5
5
12
10
9
8
7
7
6
6
18
18
18
20
20
20
20
20
21
21
21
21
21
21
22
24
24
24
24
25
25
25
25
25
30
30
32
32
33
32
32
35
68
69
76
76
80
80
80
75
75
85
70
86
75
86
87
89
88
88
87
103
105
102
100
100
120
121
124
125
125
125
126
126
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
-55 ~ +200
10
25
7.5/10
7.5±0.1
16.5max
16.5max
7max
25
7.5±0.1
0.8±0.05
0.8±0.05
D-20 Series Sensing NTC Thermistor
22max
22max
7max
25
7.5/10
1.0±0.05
1.0±0.05
D-25 Series Sensing NTC Thermistor
25
25
-55 ~ +200
26.5max
26.5max
8max
10
0.8
0.8
Circuit Protection
System
Specifications are subject to change without notice.
25
-55 ~ +200
Page:4
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