Sensors
Temperature Sensors
PTC Thermistors
PTC (Positive Temperature Coefficient) thermistors are made of an
oxide semiconductor ceramic with barium titanate as the main
component. The switching temperature is determined by raw mate-
rial composition. Above this temperature, the resistance rises rap-
idly. This property of PTC thermistors make them suitable for a
wide range of applications, including constant temperature heat-
ers, current limiting elements, and temperature sensors.
FEATURES
• Switching temperatures are available in the range from +30 to
+330°C, accommodating a wide variety of applications.
10
7
P5
X0
10
6
X2
10
5
X5
Resistance change ratio
10
4
P3
10
3
Y4
10
2
Z0
Y2
• Application of different shapes and resistances results in a wide
range of rated voltages. Voltages may be AC or DC in the range
of 12V to 240V.
• These thermistor elements enable contact-free circuit designs –
no bimetals, relays, etc.
• Because the elements are made of ceramic material, it is possi-
ble to form units of various shapes and dimensions through the
application of different molding methods.
• Various housing shapes can be produced to meet specific appli-
cation requirements.
Disc type
Square type
W
L
t
10
1
D
D=ø5 to 35mm
t =1 to 5mm
t
W=10 to 45mm
L=5 to 35mm
t=1 to 5mm
10
0
10
–1
–50
0
50
100 150 200 250
Temperature (°C)
300
350
400
FOR TEMPERATURE SENSING
The rapidly increasing resistance characteristics makes use of
these thermistors a convenient method for detecting specific tem-
peratures. Such applications also benefit from good sensitivity.
• Within any given size and shape, there is a wide range of
available resistances at normal temperature. In the following
formulas,
ρ
(specific resistivity at normal temperature) can have
values in the range of 10
Ω
• m to 50k
Ω
• m with slight variations
according to switching temperature. Resistance is calculated as
follows:
Disc shape
t
R =-
×12.7×ρ
D
2
R :
D :
L :
W:
t :
ρ :
Resistance
Temperature
Rectangular shape
t
R=
×10×ρ
L•W
Resistance at normal temperature(
Ω
)
PTC electrode diameter (mm)
PTC element length (mm)
PTC element width (mm)
PTC element thickness (mm)
Specific resistivity of PTC element’s material at normal temperature
(
Ω
• cm)
FOR CURRENT LIMITING
• Current attenuation characteristics can be custom-tailored by
controlling a combination of parameters: switching temperature,
element volume, resistance value, and load impedance.
• The operating characteristics for overcurrent protection can be
based on current increase, ambient temperature increase, or a
combination of both.
Specifications which provide more details for the proper and safe use of the described product are available upon request.
All specifications are subject to change without notice.
Sensors
Temperature Sensors
PTC Thermistors
PTC THERMISTORS FOR DEGAUSSING COLOR CRT
SHAPES AND DIMENSIONS
DIPPED TYPE (901 type)
CASE TYPE (Single-PTC, 902 type)
6max.
18.5max.
14.5max.
CASE TYPE (Double-PTC, 903 type)
18.5max.
14.5
18max.
19max.
19max.
PTC
PTC
6±1.5 7max.
8.5±1
5.5
7.5
Pin position
7.5
ø1
Fig.1
ø0.6
1±0.2
0.3
10
5.5
8.5±1
1±0.2
5
1
2
0.3
5
5
Pin position
5
Pin position
10
Fig.2
ø1.3
3
Fig.3
5
5
ø1.3
Dimensions in mm
ELECTRICAL CHARACTERISTICS
Part No.
901P52E 050MP15
901P52E 070MP16
902P51D 030MN14
902P51D 050MN14
902P72E 090MR14
903P51D 030MN14
903P51D 050MN14
903P62E 090MR14
903P53E 120MR14
904P51D 1R5MN14
904P72E 4R5MR14
Initial
resistance
(
Ω
)
5±20%
7±20%
3±20%
5±20%
9±20%
3±20%
5±20%
9±20%
12±20%
1.5±20%
4.5±20%
Rated
voltage
(V)
120
120
100
100
220
100
100
220
220
100
220
Maximum
voltage
(V)
140
140
140
140
270
140
125
270
270
140
270
Current attenuation characteristics Ep-p
Inrush
After 3s
After 60s
(A)min.
(mA)max.
(mA)max.
22
300
70
29
300
60
24
250
60
40
300
70
20
300
50
25
150
5
24
300
5
19
250
5
24
250
10
30
500
100
40
400
100
Degaussing
coil
(
Ω
)
9.5
3.5
7.5
1
20
7.5
5.5
20
12
7
10
Fig.
1
1
2
2
2
3
3
3
3
3
3
RESISTANCE vs. TEMPERATURE CHARACTERISTICS
DIPPED TYPE(901 type)
CASE TYPE(single-PTC, 902 type)
10
8
10
7
10
6
Resistance (
Ω
)
Resistance (
Ω
)
10
5
10
4
10
3
10
2
10
1
10
0
0 20
60 100 140 180 220
Temperature (°C)
10
8
10
7
10
6
10
5
10
4
10
3
10
2
10
1
10
0
0 20
60 100 140 180 220
Temperature (°C)
CASE TYPE(Double-PTC, 903 type)
10
8
10
7
10
6
Resistance (
Ω
)
10
5
10
4
10
3
10
2
10
1
10
0
0 20
60 100 140 180 220
Temperature (°C)
Specifications which provide more details for the proper and safe use of the described product are available upon request.
All specifications are subject to change without notice.
Sensors
Temperature Sensors
PTC Thermistors
PTC THERMISTORS FOR OVERCURRENT LIMITING
SHAPES AND DIMENSIONS
øD
T
RESISTANCE vs. TEMPERATURE CHARACTERISTICS
10
8
10
7
10
6
Resistance (
Ω
)
10
5
10
4
10
3
10
2
10
1
10
0
0
50 100 150 200 250 300 350
Temperature (°C)
30±5
ød
F
Dimensions in mm
ELECTRICAL CHARACTERISTICS
Part No.
911X00C0R5MB15
911X01C010MB13
911X21D4R7MF10
911X21D070MJ07
911P81D100MN08
911P97E501YU10
• Coated products
Switching
temperature Ts
(°C)
100
100
120
120
80
90
Rated
voltage
(V)
16
16
35
60
100
400
Initial
resistance
R
25
(
Ω
)
0.5±20%
1±20%
4.7±20%
7±20%
10±20%
500±40%
Current on
normal
condition
(mA) [at 25°C]
900
580
320
220
100
20
Maximum
overcurrent
(A)
5
4
1
1
0.5
0.2
Dimensions(mm)
øD max.
15
15
9.6
8
9
11
T max.
4.5
3.5
5
4
4
7
F
10
5
5
5
5
5
ød
0.6
0.5
0.6
0.6
0.5
0.65
Specifications which provide more details for the proper and safe use of the described product are available upon request.
All specifications are subject to change without notice.
Sensors
Temperature Sensors
PTC Thermistors
PTC THERMISTORS FOR MOTOR STARTING
PRODUCT IDENTIFICATION
9 12 X3 2 E 4R7 N Q 18 B1
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
(1) Product classification
9
PTC thermistor
(7) Nominal initial resistance tolerance
N
M
X
Y
±30%
±20%
±25%
Special tolerance
(2) Applications/structures of the PTC thermistor
12
11
For motor starting/element incorporated case type
For motor starting/element type single product
(8) Maximum rated voltage Erms
Q
R
S
T
U
V
200V(160 to 200V)
240V(220 to 240V)
300V(250 to 300V)
360V(320 to 355V)
400V
500V(430 to 500V)
(3) Switching temperature Ts
X3
X2
135°C (An approximate symbol is used for X3.)
120°C
(4) Specific resistance
ρ
2
3
4
5
6
less than 40 to 70
Ω
• cm
less than 70 to 100
Ω
• cm
less than 100 to 400
Ω
• cm
less than 400 to 700
Ω
• cm
less than 700 to 1000
Ω
• cm
(9) PTC element diameter
14
16
18
20
ø14mm
ø16mm
ø17.5mm
ø20mm
(5) Resistance temperature coefficient
α
E
D
22%/°C
15%/°C
(10)Case type/circuit connection method symbol
B0
B1
B2
B3
C0
C1
C2
C3
PS2
PS2A
Plug-in case B type/CSIR
Plug-in case B type/RSIR
Plug-in case B type/RSCR
Plug-in case B type/CSR
Plug-in case C type/CSIR
Plug-in case C type/RSIR
Plug-in case C type/RSCR
Plug-in case C type/CSR
Two-point fixed case type (Faston
®
tub terminal #187)
Two-point fixed case type (Faston
®
tub terminal #250)
(6) Nominal initial resistance R
25
R means the decimal point. The second and third digits in a
symbol containing no R are significant figures respectively.
The first digit means the number of zero following the significant
figure.
3R3
3R9
4R7
5R6
6R8
100
150
220
330
470
680
3.3
Ω
3.9
Ω
4.7
Ω
5.6
Ω
6.8
Ω
10
Ω
15
Ω
22
Ω
33
Ω
47
Ω
68
Ω
• Faston
®
is a registered trademark of AMP Incorporated.
Specifications which provide more details for the proper and safe use of the described product are available upon request.
All specifications are subject to change without notice.
Sensors
Temperature Sensors
PTC Thermistors
PTC THERMISTORS FOR MOTOR STARTING
SHAPES AND DIMENSIONS
2.5±0.02
Load
resistance
MEASURING CIRCUIT (at 25
°C
)
øD
Measuring
voltage
Dimensions in mm
UL FILE No., MAXIMUM RATED VOLTAGE AND MAXIMUM RATED CURRENT
Initial resistance
(
Ω
)±30%
3.3
Switching temperature Ts
øD±10%
UL File No.
Max. rated voltage
Max. rated current
UL File No.
Max. rated voltage
Max. rated current
UL File No.
Max. rated voltage
Max. rated current
UL File No.
Max. rated voltage
Max. rated current
UL File No.
Max. rated voltage
Max. rated current
UL File No.
Max. rated voltage
Max. rated current
UL File No.
Max. rated voltage
Max. rated current
UL File No.
Max. rated voltage
Max. rated current
UL File No.
Max. rated voltage
Max. rated current
UL File No.
Max. rated voltage
Max. rated current
UL File No.
Max. rated voltage
Max. rated current
135±10°C
20mm
F20-3R3
160V
12A
F20-3R9
160V
12A
F20-4R7
180V
12A
F20-5R6
180V
12A
F20-6R8
200V
10A
F20-100
225V
9A
F20-150
250V
8A
F20-220
300V
7A
F20-330
355V
6A
F20-470
400V
5A
F20-680
430V
4A
17.5mm
16mm
14mm
120±10°C
20mm
E20-3R3
160V
12A
E20-3R9
160V
12A
E20-4R7
180V
12A
E20-5R6
180V
12A
E20-6R8
220V
10A
E20-100
240V
10A
E20-150
260V
10A
E20-220
300V
9A
E20-330
300V
9A
E20-470
300V
9A
E20-680
320V
9A
17.5mm
3.9
4.7
5.6
6.8
10
15
22
33
47
68
F18-4R7
180V
10A
F18-5R6
180V
10A
F18-6R8
200V
9A
F18-100
220V
8A
F18-150
240V
7A
F18-220
280V
6A
F18-330
320V
4A
F18-470
350V
4A
F18-680
400V
4A
F16-4R7
160V
10A
F16-5R6
170V
10A
F16-6R8
180V
9A
F16-100
200V
8A
F16-150
225V
7A
F16-220
250V
6A
F14-6R8
160V
8A
F14-100
180V
7A
F14-150
240V
6A
F14-220
225V
5A
F14-330
250V
4A
E18-4R7
170V
12A
E18-5R6
190V
12A
E18-6R8
220V
10A
E18-100
240V
9A
E18-150
260V
8A
E18-220
280V
8A
E18-330
280V
7A
E18-470
300V
6A
E18-680
300V
5A
• Tolerances of initial resistance, switching temperature and product dimensions are UL recognized values.
Specifications which provide more details for the proper and safe use of the described product are available upon request.
All specifications are subject to change without notice.
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