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Zhengli Group Company Limited

Ntc Thermistor, Thermistor, Ntc manufacturer / supplier in China, offering Ntc Thermistor, CFR Carbon Resistor, Metal Film Fixed Resistor (Mfr) and so on.

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Ntc Thermistor

FOB Price: US $0.031 / Piece
Min. Order: 1,000 Pieces
Min. Order FOB Price
1,000 Pieces US $0.031/ Piece
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Production Capacity: 8000kpcs Per Month
Transport Package: 500 Pieces Per Bag
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: Ntc Thermistor
  • Function for Resistance: Protective Resistor
  • Material: Ceramic and Metal
  • Type: Varistor
  • Shape: Disc
  • Application: Medical Apparatus and Instruments
  • Regnized Mark: UL cUL
  • Specification: UL
  • HS Code: 85334000
  • Resistance: Sensitive Resistor
  • Installation: DIP Resistor
  • Packaging: Throught Hole
  • Quantity: Single Connection
  • Resistance change scale: Log Scale
  • Brand: Zhengli
  • Trademark: zhengli
  • Origin: Donggugan Guangdong China
Product Description

Ntc Thermistor
Ntc Thermistor


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 organizationRecognized marksRecognized standardCertificates series No
UL
CUL

 
 E361907


8.DimensionsNtc Thermistor
SpecificationsDiameter
Dmax
Thickness
Tmax
Lead space
F±1
Lead diameter 
d±0.05
Straight lead
Lmin
DRMΔD-56.54.05.0/2.50.55/0.4525
DRMΔD-78.54.55.00.5525
DRMΔD-910.55.07.5/5.00.75/0.5525
DRMΔD-1112.55.07.5/5.00.7525
DRMΔD-1314.56.07.50.7525
DRMΔD-1516.56.57.50.7525
DRMΔD-2021.57.010/7.51.025
DRMΔD-2527.58.0101.025


9.Packing type and quantity
Bulk packing with a lable of technical specification inside .
SizeDRM
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)1000100050050025025010050


11.Main technical parameters of D-5
typeRated 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-550.584127001115039<18>6-40 ~ +150
10D-5101.03927000.70.715039
15D-5151.5328000.60.615039
20D-5202.0228000.60.615039
22D-5222.0628000.60.615039
30D-5302.22728000.50.515039
33D-5332.43628000.50.515039
50D-5502.65330000.40.415039
60D-5602.75330000.30.315039
 
 
12.Main technical parameters of D-7
typeRated 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  ImaxIss
3D-730.206270033  <30>9-40 ~ +150
5D-750.286427002218047
8D-780.735328001118047
10D-7100.788528001118047
12D-7121.1828000.70.7390100
16D-7161.5630000.70.7390100
20D-7201.987730000.60.6390100
22D-7221.9530000.60.6390100
30D-7303.705930000.50.5390100
33D-7333.887830000.20.2390100
50D-7506.46530000.30.3390100
 
 
13.Main technical parameters of D-9
typeRated 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  ImaxIss
2.5D-92.50.1397270044  <35>11-40 ~ +170
3D-930.145627004427068
4D-940.254127003327068
5D-950.264127003327068
6D-960.358227002227068
7D-970.3265280022390100
8D-980.3731280022390100
10D-9100.398280022390100
12D-9120.989280011390100
16D-9161.041300011390100
20D-9201.173300011560150
22D-9221.2346300011560150
30D-9301.32300011560150
33D-9331.431300011560150
50D-9501.48310011560150
60D-9601.64131000.80.8560150
80D-9802.18732000.80.827068
120D-91203.28132000.80.827068
200D-92005.46932000.50.527068
 
 
14.Main technical parameters of D-11
typeRated 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  ImaxIss
1D-1110.1205260055  <55>13-40 ~ +170
1.5D-111.50.126260055  
2.5D-112.50.12627005527068
3D-1130.126327005527068
4D-1140.2005270044820220
5D-1150.2052270044820220
6D-1160.29772700331200330
7D-1170.28242800331200330
8D-1180.25912800331200330
10D-11100.26762800331200330
12D-11120.34672800221200330
15D-11150.4853000221200330
16D-11160.53000221200330
20D-11200.593000221200330
22D-11220.59033000221200330
25D-11250.60230001.51.51200330
30D-11300.72230001.51.51200330
33D-11330.79530001.51.51200330
47D-11471.1653200221200330
50D-11501.2413200221200330
60D-11601.4893200111200330
80D-11801.9863200111500390
120D-111202.97932000.80.81500390
 
 
15.Main technical parameters of D-13
typeRated 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  ImaxIss
1.3D-131.30.088927007718047<70>13-40 ~ +200
1.5D-131.50.089527007718047
2.5D-132.50.107927006627068
3D-1330.14527006627068
4D-1340.1456270055390100
4.7D-134.70.1469280055390100
5D-1350.1497280055560150
6D-1360.2111280044560150
7D-1370.2323000441200330
8D-1380.27463000441200330
10D-13100.27923000441200330
12D-13120.48333000331200330
15D-13150.48673100331200330
16D-13160.45453100331200330
18D-13180.5113200331200330
20D-13200.5683200331200330
22D-13220.6253200331200330
25D-13250.5813200221200330
30D-13300.6963200221200330
33D-13330.7653200221200330
47D-13471.091320022820220
50D-13501.161320022820220
60D-13601.392320022  
80D-13801.85632001.51.5  
120D-131202.785320011820220
 
 
16.Main technical parameters of D-15
typeRated 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 ImaxIss
1.3D-151.30.08252700881000270<90>16-40 ~ +200
1.5D-151.50.08432700881000270
2.5D-152.50.13532700771800470
3D-1530.13632700771200330
4D-1540.19852700661800470
5D-1550.12682800661800470
6D-1560.18822800551800470
7D-1570.19093000551800470
8D-1580.20113000551800470
10D-15100.20873000551800470
12D-15120.26723000441800470
15D-15150.3053200441800470
16D-15160.3063200441800470
18D-15180.33753200441800470
20D-15200.34663200441800470
22D-15220.38123200331800470
25D-15250.4333200331200330
30D-15300.5193200331200330
33D-15330.5713200331200330
40D-15400.5873200331200330
47D-15470.693200331200330
50D-15500.7343200331200330
60D-15600.881320033  
80D-15801.175320022  
120D-151201.76332001.51.51200330
 
 
 
17.Main technical parameters of D-20
typeRated 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 ImaxIss
0.7D-200.70.1045270011112200560<135>23-40 ~ +200
1D-2010.110527001010  
1.3D-201.30.13122700992200560
2.2D-202.20.12922800882200560
2.5D-202.50.14692800882200560
3D-2030.15192800882200560
5D-2050.15763000772200560
6D-2060.18913000662200560
8D-2080.19813000662200560
10D-20100.213000662200560
12D-20120.21333200552200560
16D-20160.22163200552200560
20D-20200.277320044   
30D-20300.4157320044   
33D-20330.4495320044   
60D-20600.8172320044   
 
 
18.Main technical parameters of D-25

 
typeRated 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  ImaxIss
0.7D-250.70.058127001313  <160>27-40 ~ +200 
1D-2510.083127001111   
1.3D-251.30.107827001010   
1.5D-251.50.124627001010   
2.5D-252.50.135280099   
3D-2530.162280099   
5D-2550.153300088   
8D-2580.2075300077   
10D-25100.2593330077   
12D-25120.311330066   
16D-25160.4148330066   
 
 
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