ATP Standard Over-Current Protectors
Advanced Thermal Products, Inc. • P.O. Box 249 • 328 Ridgway Road • St. Marys, PA 15857 • Phone: 814-834-1541
Fax: 814-834-1556 • E-mail: sales@atpsensor.com • Web Site: www.atpsensor.com
PTC Thermistor
Over-Current Protectors
ADVANCED THERMAL PRODUCTS, Inc.
Positive Temperature Coefficient thermistors are used
in a wide variety of applications to protect sensitive
components against Over-Current conditions. The PTC
is unique in its ability to limit excess current during fault
conditions, and then automatically reset to a normal
operating mode when the fault is removed. Select a part
from our Standard Over-Current Protectors or contact
ATP engineering to design a PTC to meet your specific
application requirements.
Features
• Fast Switching
• No Electrical Noise
• Virtually Unlimited Life
• Self Resetting
• No Contacts
• Automatic Operation
• Efficient
NOTES
1. Maximum Voltage listed as DC or 60 Hz. AC.
2. Maximum No Switch Current (Ins) is the maximum current that the PTC can pass without switching into its high resistance state.
3. Minimum Must Switch Current (Ims) is the minimum current that is necessary to switch the PTC into its high resistance state.
4. Ins is calculated at the maximum ambient temperature, while Ims is determined at the minimum ambient temperature. For ATP
standard products, Tamin is 0˚C and Tamax is 50˚C.
Typical Applications
• Telephone Line Fault
Protection
• Transformer Protection
• FHP Motor Protection
• Transistor Protection
• Speaker Protection Typical Over-Current Protectors
34
V
max
R
25
I
ns
I
ms
HδD
max Wire
Diameter
ATP
Part Number
Maximum
Voltage Resistance
at 25˚C
(±20%)
Maximum
No Switch
Current
Minimum
Must Switch
Current
Heat
Capacity Dissipation
Factor Maximum
Diameter
(volts) Ω(Amps) (Amps) Watt-sec
˚CmW/˚C (in.) (in.) AWG#
15
0.89
0.77
0.56
0.46
1.58
1.37
0.99
0.82
0.57
0.48
0.32
0.25
15
14
11
10
.650
.600
.500
.450
.032
.032
.020
.020
P6004A120X080F
P5504A120X100F
P4504A120X150F
P4004A120X200F
50 0.36
0.21
0.13
0.63
0.37
0.13
0.85
0.38
0.21
15
10
8
.650
.450
.350
.032
.020
.020
P6006C120X500F
P4006C120X101F
P3006C120X201F
132
0.31
0.25
0.13
0.08
0.05
0.55
0.45
0.23
0.15
0.10
1.41
1.19
0.48
0.25
0.16
16
15
10
8
7
.650
.600
.400
.300
.250
.032
.032
.025
.020
.020
P6010D120X700F
P5510D120X101F
P3510D120X251F
P2510D120X501F
P2010D120X102F
265 0.14
0.09
0.06
0.25
0.16
0.10
0.94
0.53
0.24
12
9
8
.450
.350
.250
.025
.020
.020
P4015E120X251F
P3015E120X501F
P2015E120X102F
400 0.10
0.06 0.18
0.11 0.96
0.49 12
9.400
.300 .025
.020 P3520F120X501F
P2520F120X102F
0.8
1.0
1.5
2.0
5
10
20
7
10
25
50
100
25
50
100
50
100
20
20
24
24
20
20
24
20
20
22
24
24
22
24
24
22
24
