PTC THERMISTORS:
TYPE PTO
OVER-CURRENT PROTECTION
DESCRIPTION:
General Purpose PTC disc thermistor.
FEATURES:
•
Low cost solid state sensor
•
Available in a broad range of resistances, transi-
tion temperatures and voltage ratings
•
Exhibits large positive increases in resistance
with temperature
•
Applications include temperature measurement
and control, current regulation and circuit
protection
•
Resistance/temperature characteristic is
infinitely repeatable and has no hysteresis
associated with its action
•
Proven quality and reliability over many years of
manufacture
•
Standard options include protective coating and
tape and reeled to EIA RS-468A
Operating
Voltage
5
12
12
12
12
12
12
12
12
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
Type Number
RL6505-5-110-5-PTO
RL5305-1-120-12-PTO
RL5305-2-120-12-PTO
RL5305-2.5-110-12-PTO
RL4005-5.0-110-12-PTO
RL3005-10-110-12-PTO
RL3005-15-110-12-PTO
RL2006-20-80-12-PTO
RL3005-25-110-12-PTO
RL7008-1.5-110-25-PTO
RL5008-3.0-110-25-PTO
RL5506-5.0-110-25-PTO
RL4006-10-110-25-PTO
RL3006-20-120-25-PTO
RL3006-30-110-25-PTO
RL3006-50-30-25-PTO
RL3006-50-40-25-PTO
RL3006-50-50-25-PTO
RL3006-50-60-25-PTO
RL3006-50-70-25-PTO
RL3006-50-80-25-PTO
RL3006-50-90-25-PTO
RL3006-50-100-25-PTO
RL3006-50-110-25-PTO
RL3006-50-120-25-PTO
R @ 25°C
(±30%)
0.5
1.0
2.0
2.5
5.0
10
15
20
25
1.5
3
5
10
20
30
50
50
50
50
50
50
50
50
50
50
Ttr
(°C)
110
120
120
110
110
110
110
80
110
110
110
110
110
120
110
30
40
50
60
70
80
90
100
110
120
DIMENSIONS:
d.c.
t.c.
(m/W°C) (Sec)
18
14
14
14
10
7
7
6
7
18
14
14
10
7
7
7
7
7
7
7
7
7
7
7
7
70
50
50
50
40
35
35
30
35
80
50
50
40
35
35
35
35
35
35
35
35
35
35
35
35
H
(J/°C)
0.8
0.6
0.6
0.6
0.3
0.2
0.2
0.1
0.2
1.5
0.8
0.7
0.4
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
A (max)
in.
mm.
0.70
0.60
0.60
0.60
0.45
0.35
0.35
0.25
0.35
0.75
0.55
0.60
0.45
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
17.80
15.24
15.24
15.24
11.43
8.89
8.89
6.35
8.89
19.05
13.97
15.24
11.43
8.89
8.89
8.89
8.89
8.89
8.89
8.89
8.89
8.89
8.89
8.89
8.89
B (max)
in.
mm.
0.16
0.15
0.16
0.16
0.15
0.15
0.15
0.15
0.15
0.18
0.18
0.16
0.17
0.16
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
4.06
3.81
4.06
4.06
3.81
3.81
3.81
3.81
3.81
4.57
4.57
4.06
4.32
4.06
3.81
3.81
3.81
3.81
3.81
3.81
3.81
3.81
3.81
3.81
3.81
C (max)
in.
mm.
0.33
0.33
0.33
0.33
0.25
0.25
0.25
0.15
0.25
0.33
0.33
0.33
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
8.38
8.38
8.38
8.38
6.35
6.35
6.35
3.81
6.35
8.38
8.38
8.38
6.35
6.35
6.35
6.35
6.35
6.35
6.35
6.35
6.35
6.35
6.35
6.35
6.35
AWG
No.
20
20
20
20
24
24
24
24
24
20
22
22
24
22
24
24
24
24
24
24
24
24
24
24
24
OPTIONS:
•
Protective coating, use suffix “POC”
•
Tape and reel, use suffix “POR”
•
Coated and T&R, use suffix “POCR”
BOWTHORPE THERMOMETRICS
Crown Industrial Estate, Priorswood Road
Taunton, Somerset TA2 8QY UK
Tel +44 (0) 1823 335200
Fax +44 (0) 1823 332637
•
Other resistances
•
Other tolerances, other transition temperatures
•
Alternate size and configurations
•
Other voltage ratings
THERMOMETRICS, INC.
808 US Highway 1
Edison, New Jersey 08817-4695 USA
Tel +1 (732) 287 2870
Fax +1 (732) 287 8847
KEYSTONE THERMOMETRICS CORPORATION
967 Windfall Road
St. Marys, Pennsylvania 15857-3397 USA
Tel +1 (814) 834 9140
Fax +1 (814) 781 7969
PTC THERMISTORS:
TYPE PTO
OVER-CURRENT PROTECTION
Operating
Voltage
50
50
50
50
50
50
50
50
50
50
120
120
120
120
120
120
120
240
240
240
240
240
240
240
240
240
240
480
480
480
Type Number
RL5506-5-65-50-PTO
RL5506-5-110-50-PTO
RL4508-7-110-50-PTO
RL4006-10-110-50-PTO
RL4508-15-110-50-PTO
RL4508-20-110-50-PTO
RL4010-50-110-50-PTO
RL2510-100-110-50-PTO
RL3312-200-110-50-PTO
RL2010-500-110-50-PTO
RL7510-10-120-120-PTO
RL5512-15-110-120-PTO
RL6010-20-120-120-PTO
RL5510-25-60-120-PTO
RL4510-50-120-120-PTO
RL3510-100-110-120-PTO
RL2510-200-110-120-PTO
RL6315-40-110-240-PTO
RL5515-50-65-240-PTO
RL6315-50-110-240-PTO
RL6015-100-120-240-PTO
RL6315-250-110-240-PTO
RL6315-500-110-240-PTO
RL3020-1000-100-240-PTO
RL3020-1500-100-240-PTO
RL3020-3000-100-240-PTO
RL1710-25K-65-240-PTO
RL7020-1K-100-480-PTO
RL5020-2K-100-480-PTO
RL3020-5K-100-480-PTO
R @ 25°C
(±30%)
5.0
5.0
7.0
10
15
20
50
100
200
500
10
15
20
25
50
100
200
40
50
50
100
250
500
1k
1.5k
3.0k
25k
1k
2k
5k
Ttr
(°C)
65
110
110
110
110
110
110
110
110
110
120
110
120
60
120
110
110
110
65
110
120
110
110
100
100
100
65
100
100
100
d.c.
t.c.
(m/W°C) (Sec)
14
14
12
10
12
12
12
8
9
7
20
14
18
15
12
11
8
18
17
18
18
18
18
12
12
12
6
18
15
12
50
50
45
40
45
45
60
40
45
40
90
90
90
90
70
45
40
90
80
90
90
90
90
60
60
60
40
90
80
60
H
(J/°C)
0.7
0.7
0.6
0.4
0.6
0.6
0.6
0.2
0.5
0.2
2.2
1.4
1.4
1.2
0.8
0.5
0.2
2.3
1.8
2.3
2.1
2.3
2.3
0.7
0.7
0.7
0.1
3.8
2.0
0.7
A (max)
in.
mm.
0.60
0.60
0.50
0.45
0.50
0.50
0.45
0.30
0.40
0.25
0.80
0.60
0.65
0.60
0.50
0.40
0.30
0.65
0.60
0.65
0.65
0.65
0.65
0.35
0.35
0.35
0.20
0.75
0.55
0.35
15.24
15.24
12.70
11.43
12.70
12.70
11.43
7.62
10.16
6.35
20.32
15.24
16.51
15.24
12.70
10.16
7.62
16.51
15.24
16.51
16.51
16.51
16.51
8.89
8.89
8.89
5.08
19.05
13.97
8.89
B (max)
in.
mm.
0.18
0.16
0.18
0.17
0.18
0.18
0.20
0.22
0.23
0.18
0.23
0.23
0.23
0.22
0.20
0.20
0.20
0.27
0.27
0.27
0.27
0.27
0.27
0.31
0.31
0.31
0.20
0.32
0.32
0.31
4.57
4.06
4.57
4.32
4.57
4.57
5.08
5.59
5.84
4.57
5.84
5.84
5.84
5.59
5.08
5.08
5.08
6.86
6.86
6.86
6.86
6.86
6.86
7.87
7.87
7.87
5.08
8.13
8.13
7.87
C (max)
in.
mm.
0.33
0.33
0.33
0.25
0.33
0.33
0.33
0.15
0.25
0.15
0.33
0.33
0.33
0.33
0.33
0.25
0.15
0.33
0.33
0.33
0.33
0.33
0.33
0.25
0.25
0.25
0.15
0.33
0.33
0.25
8.38
8.38
8.38
6.35
8.38
8.38
8.38
3.81
6.35
3.81
8.38
8.38
8.38
8.38
8.38
6.35
3.81
8.38
8.38
8.38
8.38
8.38
8.38
6.35
6.35
6.35
3.81
8.38
8.38
6.35
AWG
No.
20
22
22
24
22
22
22
22
20
24
18
20
20
20
22
22
22
18
20
18
20
18
18
20
20
20
24
18
18
20
OPTIONS:
•
Protective coating, use suffix “POC”
•
Tape and reel, use suffix “POR”
•
Coated and T&R, use suffix “POCR”
•
Other resistances
•
Other tolerances, other transition temperatures
•
Alternate size and configurations
•
Other voltage ratings
BOWTHORPE THERMOMETRICS
Crown Industrial Estate, Priorswood Road
Taunton, Somerset TA2 8QY UK
Tel +44 (0) 1823 335200
Fax +44 (0) 1823 332637
THERMOMETRICS, INC.
808 US Highway 1
Edison, New Jersey 08817-4695 USA
Tel +1 (732) 287 2870
Fax +1 (732) 287 8847
KEYSTONE THERMOMETRICS CORPORATION
967 Windfall Road
St. Marys, Pennsylvania 15857-3397 USA
Tel +1 (814) 834 9140
Fax +1 (814) 781 7969
Talking
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