Engineering Center SZL and LEPCOS
— General representative of Epcos AG by ferrite in the CIS
— Official distributor and general representative for ferrites of TDK Electronics Europe Gmbh in the CIS
— Authorized distributor of Magnetics in Russia, CIS and Baltic countries
— Exclusive distributor of USM in Russia and CIS countries
— Official Distributor Temex Ceramics in Russia and CIS
PTC thermistors (with positive temperature coefficient) represent the ceramic components whose electrical resistance rapidly increases when a certain temperature is exceeded. In such a case the protection from overcurrent is provided. After failure recovery the resistance of PTC thermistors decreases, and the component recovers safety features.
Such elements are mianly produced on the base of ceramics (BaTiO3), a dielectric with electrical resistance at 10 10…10 12 Оhm·sm. When introducing additives of rare earth elements to the (BaTiO3 composition one can decrease electrical resistance up to 10…10² Оhm·sm, corresponding semiconductor elements. The possibility for searching of thermistors with determined characteristics allows to use them as protection elements in modern electronic equipment.
The main fields of PTC thermistors application:
electronic ballasts
Protection from overcurrent
IT systems and electronic equipment
DC/DC converters
аutomobile electronucs
hoequipment for welding
refrigerating unit
measuring and temperature control systems
industrial electronics
During several years Epcos has been one of the world leaders in the field of designing, development and manufacturing of electronuc components, particularly, PTC thermistors. The company produces a wide range of PTC thermistors with different electrical characteristics and sizes, that allows to find a technical solution in order to provide a protection of the equipment.
When choosing the component it is necessary to take into account following features of PTC thermistors:
RR - nominal resistanse at T= 25°C, Ohm
IR - nominal current, А
ΔRТ/RR - Tolerance of R25
TR -nominal temperature, К
α - Temperature coeffiicient, %
PTC thermistors series
PTC thermistors for overcurrent protection
During operating of power equipment the danger of overcurrent and short circuits. In order to provide the protection from high current and voltage values Epcos has produced the special series of PTC thermistors,characterising by low resistance at ambient conditions. The resistance of thermistiors strongly depends on ambient temperature. When current flowing the temperature grows, and the thermistor sharply increases resistanse providing the protection from a short circuit.
Disk thermistors
Type
Inom, А
Rnom, Ohm
Drawing
wmax, mm
hmax, mm
thmax, mm
ordering code
Detailed documentation
VR = 12V DC/В AC, Vmax = 20 В DC/В AC
C945
1500
0.45
17.5
21.0
0.6
B59945C0160A070
C955
950
0.80
13.5
17.0
0.6
B59955C0160A070
C965
700
1.20
11.0
14.5
0.6
B59965C0160A070
C975
550
1.80
9.0
12.5
0.6
B59975C0160A070
C985
300
4.60
6.5
10.0
0.6
B59985C0160A070
C995
150
13.0
4.0
7.5
0.5
B59995C0160A070
VR = 12/24 В DC/В AC, Vmax = 30 В DC/В AC
C935
1800
0.30
22.0
25.5
0.6
B59945C0160A070
C945
1300
0.45
17.5
21.0
0.6
B59945C0120A070
C955
850
0.8
13.5
17.0
0.6
B59955C0120A070
C965
600
1.20
11.0
14.5
0.6
B59965C0120A070
C975
450
1.80
9.0
12.5
0.6
B59975C0120A070
C985
250
4.60
6.5
10.0
0.6
B59985C0120A070
C995
120
13.0
4.0
7.5
0.5
B59995C0120A070
VR = 63 V DC/V AC, Vmax = 80 V DC/V AC
C910
1000
1.20
22.0
25.5
0.8
B59910C0130A070
C930
700
1.65
22.0
25.5
0.6
B59930C0120A070
C930
700
2.20
17.5
21.0
0.8
B59930C0130A070
C940
450
2.30
17.5
21.0
0.6
B59940C0120A070
C930
340
1.65
22.0
25.5
0.6
B59930C0080A070
C950
320
3.70
13.5
17.0
0.6
B59950C0120A070
C950
320
4.90
11.0
14.5
0.6
B59950C0130A070
C960
250
5.60
11.0
14.5
0.6
B59960C0120A070
C960
250
5.60
11.0
14.5
0.6
B59960C0120A070
C960
250
8.00
9.0
12.5
0.6
B59960C0130A070
C940
245
2.30
17.5
21.0
0.6
B59940C0080A070
C950
170
3.70
13.5
17.0
0.6
B59950C0080A070
C970
150
9.40
9.0
12.5
0.6
B59970C0120A070
C970
150
20.0
6.5
10.0
0.6
B59970C0130A070
C960
130
20.0
6.5
10.0
0.6
B59960C0080A070
C970
90
9.40
9.0
12.5
0.6
B59970C0080A070
C980
85
25.00
6.5
10.0
0.6
B59980C0120A070
C980
85
25.00
6.5
10.0
0.6
B59980C0120A070
C980
85
62.00
4.0
7.5
0.6
B59980C0130A070
C980
50
25.00
6.5
10.0
0.6
B59980C0080A070
C990
50
55.0
4.0
7.5
0.5
B59990C0120A070
C990
30
55.0
4.0
7.5
0.5
B59990C0080A070
VR = 110 V DC/V AC, Vmax = 160 V DC/V AC
C830
525
3.7
22.0
25.5
0.6
B59830C0160A070
C845
400
6.00
17.5
21.0
0.6
B59840C0160A070
C850
250
10.00
13.5
17.0
0.6
B59850C0160A070
C860
180
15.00
11.0
14.5
0.6
B59860C0160A070
C870
125
25.00
9.0
12.5
0.6
B59870C0160A070
C880
70
70.00
6.5
10.0
0.6
B59880C0160A070
C890
35
150.00
4.0
7.5
0.5
B59890C0160A070
VR = 230 В DC/В AC, Vmax = 265 В DC/В AC
C810
650
3.50
22.0
25.5
0.8
B59810C0130A070
C830
460
3.70
22.0
25.5
0.6
B59830C0120A070
C830
450
5.0
17.5
21.0
0.8
B59830C0130A070
C840
330
6.0
17.5
21.0
0.6
B59840C0120A070
C840
330
9.0
13.5
17.0
0.6
B59840C0130A070
C850
200
10.0
13.5
17.0
0.6
B59850C0120A070
C830
250
3.70
22.0
25.5
0.6
B59830C0080A070
C850
200
13.0
11.0
14.5
0.6
B59850C0130A070
C840
170
6.0
17.5
21.0
0.6
B59840C0080A070
C860
140
15.00
11.0
14.5
0.6
B59860C0120A070
C860
140
25.00
9.0
12.5
0.6
B59860C0130A070
C850
110
10.00
13.5
17.0
0.6
B59850C0080A070
C870
100
25.00
9.0
12.5
0.6
B59870C0120A070
C870
100
50.0
6.5
10.0
0.6
B59870C0130A070
C860
90
15.0
11.0
14.5
0.6
B59860C0080A070
C872
80
35.00
9.0
12.5
0.6
B59872C0120A070
C873
70
45.00
9.0
12.5
0.6
B59873C0120A070
C874
60
55.00
9.0
12.5
0.6
B59874C0120A070
C870
60
25.00
9.0
12.5
0.6
B59870C0080A070
C880
55
70.00
6.5
10.0
0.6
B59880C0120A070
C875
55
65.0
9.0
12.5
0.6
B59875C0120A070
C880
55
160.0
4.0
7.5
0.6
B59880C0130A070
C883
35
120.0
6.5
10.0
0.6
B59883C0120A070
C890
30
150.0
4.0
7.5
0.5
B59890C0120A070
C880
30
70.0
6.5
10.0
0.6
B59880C0080A070
C890
15
150.0
4.0
7.5
0.5
B59890C0080A070
VR = 380 В DC/В AC, Vmax = 420 В DC/В AC
C884
21
600.0
6.5
10.0
0.6
B59884C0120A070
VR = 500 В DC/В AC, Vmax = 550 В DC/В AC
C885
15
1200.0
6.5
10.0
0.6
BB59885C0120A070
C886
12
1500.0
6.5
10.0
0.6
B59886C0120A070
SMD thermistors
Type
Inom, А
Rnom, Ohm
Drawing
Ordering code
Detailed documentation
PTC themistors
VR = 500 В DC/В AC, Vmax = 550 В DC/В AC
B404
4
3500.0
B59085G1120A161
B406
2.5
5500
B59406B0060A040
VR = 24 В DC/В AC, Vmax = 30 В DC/В AC
P1301
310
3.1
B59301P1120A062
P1201
265
4.6
B59201P1120A062
P1301
205
3.1
B59301P1080A062
P1101
170
13.0
B59101P1120A062
P1201
165
4.6
B59201P1080A062
P1101
90
13.0
B59101P1080A062
VR = 63 В DC/В AC, Vmax = 80 В DC/В AC
P1315
150
16.0
B59315P1120A062
P1215
100
25.0
B59215P1120A062
P1301
205
3.1
B59301P1080A062
P1315
80
16.0
B59315P1080A062
P1115
70
55.0
B59115P1120A062
P1215
65
25.0
B59215P1080A062
P1115
40
55.0
B59115P1080A062
VR = 42 В DC/В AC, Vmax = 60 В DC/В AC
A622
22
220
B59622A0090A062
VR = 63 В DC/В AC, Vmax = 80 В DC/В AC
A623
15
470
B59622A0090A062
VR = 24 В DC/В AC, Vmax = 30 В DC/В AC
A606
920
27
B59622A0090A062
A607
70
55
B59607A0120A062
VR = 63 В DC/В AC, Vmax = 80 В DC/В AC
A707
50
125
B59707A0120A062
VR = 230 В DC/В AC, Vmax = 265 В DC/В AC
A807
15
400.0
B59807A0120A062
VR = 230 В DC/В AC, Vmax = 265 В DC/В AC
A907
12
1500.0
B59907A0120A062
Inrush current limiters in a plastic case
Type
Umax,V
Rnominal, Ohm
Drawing
Ordering code
Detailed information
J105
260
22
B59105J0130A020
J107
440
56
B59107J0130A020
J109
560
100
B59109J0130A020
PTC thermistors for temperature control
PTC thermistors produced by Epcos are widely applied in measuring systems and temperature control systems, lighting equipment, home appliance, automobile electronics, DC/DC-converters and other equipment. These protection devices are characterised by a high operation speed and small sizes and are characterised by a wide range of working temperatures.
PTC thermistors aslimit temperature sensors (Leaded disks, coated, miniaturized)
LEPCOS invites you to attend the Stand C23 at ChipEXPO 2019 exhibition, which will be held from 16 to 18 October 2019 in Moscow in the Expocentre, in the pavilion "Forum".
26.06 19
According to the results of 2018 Lepcos has received "best ferrites seller 2018" seal of excellence from TDK company.
18.04 19
Dear colleagues! We would like to draw your attention to the fact that, since December 2018, the package content of electrolytic capacitors has been changed.
Contacts
196084, Russia, St. Petersburg
Varshavskaya str. 5A.
Paper mail: 196128, Russia, St. Petersburg, p.o. box 63 All contacts
PTC thermistors (with positive temperature coefficient) represent the ceramic components whose electrical resistance rapidly increases when a certain temperature is exceeded. In such a case the protection from overcurrent is provided. After failure recovery the resistance of PTC thermistors decreases, and the component recovers safety features.
During operating of power equipment the danger of overcurrent and short circuits. In order to provide the protection from high current and voltage values Epcos has produced the special series of PTC thermistors,characterising by low resistance at ambient conditions. The resistance of thermistiors strongly depends on ambient temperature. When current flowing the temperature grows, and the thermistor sharply increases resistanse providing the protection from a short circuit.
PTC thermistors produced by Epcos are widely applied in measuring systems and temperature control systems, lighting equipment, home appliance, automobile electronics, DC/DC-converters and other equipment. These protection devices are characterised by a high operation speed and small sizes and are characterised by a wide range of working temperatures.
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