Approved by UL cUL Green or Black Ntc Thermistor

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    2017-12-20 03:32

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Zhengli Group Company Limited

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Contact:Miss Fanli(Mr.)  

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Area:Guangdong

Address:Guangdong

Website: http://zhengli-capacitor.ahzy315.com/

Product details

 




NTC thermistor

1.Power NTC thermistor introduction
Power NTC thermistor has an excellent non-linearity characteristic for resistance and temperature , its appliance is an easy and effectice method to protect electric device through surge current restrainning .

2.Resistance and temperature characteristic of power NTC thermistor
Power NTC thermistor can effectively restrain the surge current in the circuit ,and its resistance will fall down to a very small state through the current durative and the power consumption is commonly ignored , the coltage will be borne by the rear divice so that to guarantee the normal function of circuit .
The intergradations metal oxide as the main material , power NTC thermistor is a kind of semi-conductive component manufactured by the ceramic productive process technique ,it belongs to the category of negative thermistor series .

3.Range of application
Power NTC thermistor are widely applied in switch power ,conversion power supply ,UPS power and electronic rectifier ,heater ,etc , it has a protected function for RT ,display ,lighting device and circuit of different electronic equipments .

4.Nomenclature explanation
1. Zero-power resistance (R25) : the measured resistance of power NTC thermistor under the condition of 25ºC with a rated zero-power .
2. The maximum steady current (Imax):the maximum current that could be allowed connecting with the power NTC thermistor under the rated current condition (virtual value)
 

5.Characteristic of power NTC thermistor
1.Meet the environmental requirements of ROHS.
2.Low cost and quality stability.
3.Power NTC thermistors are in small size but with a high power that to restrain the surge current .
4.Powe NTC thermistors possesse the electronic character of fast reflection ,high reliability and long-life time for use.
5.The material has a high constant as B value with small remained resistance .
6.Power NTC thermistors have a large application range integrate products series .
 
 
6.Characteristic of power NTC thermistor
1.The muaximum working current(Imax)>actual operating current in the power loop.
2.Power resistor nominal resistance R: R≥1.414E/Im.
E:line voltage
Im:surge current for power Im=100 times the working current ; for the heating wire , heater circuit Im=30 times operating current.
3.The bigger the B value is , the less the residual resistance ,the lower the temperature rise.In general , the bigger the product of the time constant and dissipation coefficient ,the larger the heat capacity of resistor , the stronger the ability to suppress the surge current of resistor .
 
7.Recognized standards and certificates
Recognized organization Recognized marks Recognized standard Certificates series No
UL
CUL

 
  E361907
 
8.Dimensions
Specifications Diameter 
Dmax
Thickness 
 
Lead space 
F±1
Lead diameter
d±0.05
Straight lead 
Lmin
DRMΔD-5 6.5 4.0 5.0/2.5 0.55/0.45 25
DRMΔD-7 8.5 4.5 5.0 0.55 25
DRMΔD-9 10.5 5.0 7.5/5.0 0.75/0.55 25
DRMΔD-11 12.5 5.0 7.5/5.0 0.75 25
DRMΔD-13 14.5 6.0 7.5 0.75 25
DRMΔD-15 16.5 6.5 7.5 0.75 25
DRMΔD-20 21.5 7.0 10/7.5 1.0 25
DRMΔD-25 27.5 8.0 10 1.0 25
 
9.Packing type and quantity
Bulk packing with a lable of technical specification inside .
Size DRM
ΔD-5
DRM
ΔD-7
DRM
ΔD-9
DRM
ΔD-11
DRM
ΔD-13
DRM
ΔD-15
DRM
ΔD-20
DRM
ΔD-25
MPQ (pcs/bag) 1000 1000 500 500 250 250 100 50
 


11.Main technical parameters of D-5 
type Rated zero-power resistance 
R25 (Ω)
residual
resistance
under
maximum steady-state current at
25ºC (Ω)
B25/85
(k)
Current
(A)
Max load capacitance
(uf)
120VAC
Max load 
capacitance
(uf)
240VAC
Thermal time constant
(s)
Dissipation factor
(mw/ºC)
Temperature
Range
(ºC)
Approvals
UL/CUL
Maximum steady-state current at 
25ºC Imax
Iss
5D-5 5 0.5841 2700 1 1 150 39 <18 >6 -40 ~ +150
10D-5 10 1.039 2700 0.7 0.7 150 39
15D-5 15 1.53 2800 0.6 0.6 150 39
20D-5 20 2.02 2800 0.6 0.6 150 39
22D-5 22 2.06 2800 0.6 0.6 150 39
30D-5 30 2.227 2800 0.5 0.5 150 39
33D-5 33 2.436 2800 0.5 0.5 150 39
50D-5 50 2.653 3000 0.4 0.4 150 39
60D-5 60 2.753 3000 0.3 0.3 150 39
 
 
12.Main technical parameters of D-7 
type Rated zero-power resistance R25 (Ω) residual resistance under maximum steady-state current at 25ºC (Ω) B25/85
(k)
Current
(A)
Max load capacitance
(uf)
120VAC
Max load capacitance
(uf)
240VAC
Thermal time constant
(s)
Dissipation factor
(mw/ºC)
Temperature
Range
(ºC)
Approvals
UL/CUL
Maximum steady-state current at 25ºC Imax Iss
3D-7 3 0.206 2700 3 3     <30 >9 -40 ~ +150
5D-7 5 0.2864 2700 2 2 180 47
8D-7 8 0.7353 2800 1 1 180 47
10D-7 10 0.7885 2800 1 1 180 47
12D-7 12 1.18 2800 0.7 0.7 390 100
16D-7 16 1.56 3000 0.7 0.7 390 100
20D-7 20 1.9877 3000 0.6 0.6 390 100
22D-7 22 1.95 3000 0.6 0.6 390 100
30D-7 30 3.7059 3000 0.5 0.5 390 100
33D-7 33 3.8878 3000 0.2 0.2 390 100
50D-7 50 6.465 3000 0.3 0.3 390 100
 
 
13.Main technical parameters of D-9 
type Rated zero-power resistance R25 (Ω) residual resistance under maximum steady-state current at 25ºC (Ω) B25/85
(k)
Current
(A)
Max load capacitance
(uf)
120VAC
Max load capacitance
(uf)
240VAC
Thermal time constant
(s)
Dissipation factor
(mw/ºC)
Temperature
Range
(ºC)
Approvals
UL/CUL
Maximum steady-state current at 25ºC Imax Iss
2.5D-9 2.5 0.1397 2700 4 4     <35 >11 -40 ~ +170
3D-9 3 0.1456 2700 4 4 270 68
4D-9 4 0.2541 2700 3 3 270 68
5D-9 5 0.2641 2700 3 3 270 68
6D-9 6 0.3582 2700 2 2 270 68
7D-9 7 0.3265 2800 2 2 390 100
8D-9 8 0.3731 2800 2 2 390 100
10D-9 10 0.398 2800 2 2 390 100
12D-9 12 0.989 2800 1 1 390 100
16D-9 16 1.041 3000 1 1 390 100
20D-9 20 1.173 3000 1 1 560 150
22D-9 22 1.2346 3000 1 1 560 150
30D-9 30 1.32 3000 1 1 560 150
33D-9 33 1.431 3000 1 1 560 150
50D-9 50 1.48 3100 1 1 560 150
60D-9 60 1.641 3100 0.8 0.8 560 150
80D-9 80 2.187 3200 0.8 0.8 270 68
120D-9 120 3.281 3200 0.8 0.8 270 68
200D-9 200 5.469 3200 0.5 0.5 270 68
 
 
14.Main technical parameters of D-11 
type Rated zero-power resistance R25 (Ω) residual resistance under maximum steady-state current at 25ºC (Ω) B25/85
(k)
Current
(A)
Max load capacitance
(uf)
120VAC
Max load capacitance
(uf)
240VAC
Thermal time constant
(s)
Dissipation factor
(mw/ºC)
Temperature
Range
(ºC)
Approvals
UL/CUL
Maximum steady-state current at 25ºC Imax Iss
1D-11 1 0.1205 2600 5 5     <55 >13 -40 ~ +170
1.5D-11 1.5 0.126 2600 5 5    
2.5D-11 2.5 0.126 2700 5 5 270 68
3D-11 3 0.1263 2700 5 5 270 68
4D-11 4 0.2005 2700 4 4 820 220
5D-11 5 0.2052 2700 4 4 820 220
6D-11 6 0.2977 2700 3 3 1200 330
7D-11 7 0.2824 2800 3 3 1200 330
8D-11 8 0.2591 2800 3 3 1200 330
10D-11 10 0.2676 2800 3 3 1200 330
12D-11 12 0.3467 2800 2 2 1200 330
15D-11 15 0.485 3000 2 2 1200 330
16D-11 16 0.5 3000 2 2 1200 330
20D-11 20 0.59 3000 2 2 1200 330
22D-11 22 0.5903 3000 2 2 1200 330
25D-11 25 0.602 3000 1.5 1.5 1200 330
30D-11 30 0.722 3000 1.5 1.5 1200 330
33D-11 33 0.795 3000 1.5 1.5 1200 330
47D-11 47 1.165 3200 2 2 1200 330
50D-11 50 1.241 3200 2 2 1200 330
60D-11 60 1.489 3200 1 1 1200 330
80D-11 80 1.986 3200 1 1 1500 390
120D-11 120 2.979 3200 0.8 0.8 1500 390
 
 
15.Main technical parameters of D-13 
type Rated zero-power resistance R25 (Ω) residual resistance under maximum steady-state current at 25ºC (Ω) B25/85
(k)
Current
(A)
Max load capacitance
(uf)
120VAC
Max load capacitance
(uf)
240VAC
Thermal time constant
(s)
Dissipation factor
(mw/ºC)
Temperature
Range
(ºC)
Approvals
UL/CUL
Maximum steady-state current at 25ºC Imax Iss
1.3D-13 1.3 0.0889 2700 7 7 180 47 <70 >13 -40 ~ +200
1.5D-13 1.5 0.0895 2700 7 7 180 47
2.5D-13 2.5 0.1079 2700 6 6 270 68
3D-13 3 0.145 2700 6 6 270 68
4D-13 4 0.1456 2700 5 5 390 100
4.7D-13 4.7 0.1469 2800 5 5 390 100
5D-13 5 0.1497 2800 5 5 560 150
6D-13 6 0.2111 2800 4 4 560 150
7D-13 7 0.232 3000 4 4 1200 330
8D-13 8 0.2746 3000 4 4 1200 330
10D-13 10 0.2792 3000 4 4 1200 330
12D-13 12 0.4833 3000 3 3 1200 330
15D-13 15 0.4867 3100 3 3 1200 330
16D-13 16 0.4545 3100 3 3 1200 330
18D-13 18 0.511 3200 3 3 1200 330
20D-13 20 0.568 3200 3 3 1200 330
22D-13 22 0.625 3200 3 3 1200 330
25D-13 25 0.581 3200 2 2 1200 330
30D-13 30 0.696 3200 2 2 1200 330
33D-13 33 0.765 3200 2 2 1200 330
47D-13 47 1.091 3200 2 2 820 220
50D-13 50 1.161 3200 2 2 820 220
60D-13 60 1.392 3200 2 2    
80D-13 80 1.856 3200 1.5 1.5    
120D-13 120 2.785 3200 1 1 820 220
 
 
16.Main technical parameters of D-15 
type Rated zero-power resistance R25 (Ω) residual resistance under maximum steady-state current at 25ºC (Ω) B25/85
(k)
Current
(A)
Max load capacitance
(uf)
120VAC
Max load capacitance
(uf)
240VAC
Thermal time constant
(s)
Dissipation factor
(mw/ºC)
Temperature
Range
(ºC)
Approvals
UL/CUL
Maximum steady-state current at 25ºC Imax Iss
1.3D-15 1.3 0.0825 2700 8 8 1000 270 <90 >16 -40 ~ +200
1.5D-15 1.5 0.0843 2700 8 8 1000 270
2.5D-15 2.5 0.1353 2700 7 7 1800 470
3D-15 3 0.1363 2700 7 7 1200 330
4D-15 4 0.1985 2700 6 6 1800 470
5D-15 5 0.1268 2800 6 6 1800 470
6D-15 6 0.1882 2800 5 5 1800 470
7D-15 7 0.1909 3000 5 5 1800 470
8D-15 8 0.2011 3000 5 5 1800 470
10D-15 10 0.2087 3000 5 5 1800 470
12D-15 12 0.2672 3000 4 4 1800 470
15D-15 15 0.305 3200 4 4 1800 470
16D-15 16 0.306 3200 4 4 1800 470
18D-15 18 0.3375 3200 4 4 1800 470
20D-15 20 0.3466 3200 4 4 1800 470
22D-15 22 0.3812 3200 3 3 1800 470
25D-15 25 0.433 3200 3 3 1200 330
30D-15 30 0.519 3200 3 3 1200 330
33D-15 33 0.571 3200 3 3 1200 330
40D-15 40 0.587 3200 3 3 1200 330
47D-15 47 0.69 3200 3 3 1200 330
50D-15 50 0.734 3200 3 3 1200 330
60D-15 60 0.881 3200 3 3    
80D-15 80 1.175 3200 2 2    
120D-15 120 1.763 3200 1.5 1.5 1200 330
 
 
 
17.Main technical parameters of D-20 
type Rated zero-power resistance R25 (Ω) residual resistance under maximum steady-state current at 25ºC (Ω) B25/85
(k)
Current
(A)
Max load capacitance
(uf)
120VAC
Max load capacitance
(uf)
240VAC
Thermal time constant
(s)
Dissipation factor
(mw/ºC)
Temperature
Range
(ºC)
Approvals
UL/CUL
Maximum steady-state current at 25ºC Imax Iss
0.7D-20 0.7 0.1045 2700 11 11 2200 560 <135 >23 -40 ~ +200
1D-20 1 0.1105 2700 10 10    
1.3D-20 1.3 0.1312 2700 9 9 2200 560
2.2D-20 2.2 0.1292 2800 8 8 2200 560
2.5D-20 2.5 0.1469 2800 8 8 2200 560
3D-20 3 0.1519 2800 8 8 2200 560
5D-20 5 0.1576 3000 7 7 2200 560
6D-20 6 0.1891 3000 6 6 2200 560
8D-20 8 0.1981 3000 6 6 2200 560
10D-20 10 0.21 3000 6 6 2200 560
12D-20 12 0.2133 3200 5 5 2200 560
16D-20 16 0.2216 3200 5 5 2200 560
20D-20 20 0.277 3200 4 4      
30D-20 30 0.4157 3200 4 4      
33D-20 33 0.4495 3200 4 4      
60D-20 60 0.8172 3200 4 4      
 
 
18.Main technical parameters of D-25 
type Rated zero-power resistance R25 (Ω) residual resistance under maximum steady-state current at 25ºC (Ω) B25/85
(k)
Current
(A)
Max load capacitance
(uf)
120VAC
Max load capacitance
(uf)
240VAC
Thermal time constant
(s)
Dissipation factor
(mw/ºC)
Temperature
Range
(ºC)
Approvals
UL/CUL
Maximum steady-state current at 25ºC Imax Iss
0.7D-25 0.7 0.0581 2700 13 13     <160 >27 -40 ~ +200  
1D-25 1 0.0831 2700 11 11      
1.3D-25 1.3 0.1078 2700 10 10      
1.5D-25 1.5 0.1246 2700 10 10      
2.5D-25 2.5 0.135 2800 9 9      
3D-25 3 0.162 2800 9 9      
5D-25 5 0.153 3000 8 8      
8D-25 8 0.2075 3000 7 7      
10D-25 10 0.2593 3300 7 7      
12D-25 12 0.311 3300 6 6      
16D-25 16 0.4148 3300 6 6