| PTC Over Current
Protectors are used in series to protect electronic circuits
when an over current condition develops. When a fault develops
in a circuit leading to an over current condition, The PTC Thermistor
switches from its low resistance state to a very high resistance
state (this can be several decades of change) reducing the current
flow to a very low and safe level.
PTC Over Current Protector - 135 C Switching Temperature
|
Part Number
|
W
@ 25C +/-
20%
|
Max. Continuous Current (Amps)
|
Min. Switching Current (Amps)
|
Maximum
Voltage
|
Maximum
Diameter
|
|
WC4504DQ5R0M
|
5.0
|
0.32
|
0.70
|
25
|
0.45"
|
|
WC4504DQ7R5M
|
7.5
|
0.28
|
0.60
|
50
|
0.45"
|
|
WC3004DQ100M
|
10.0
|
0.22
|
0.45
|
50
|
0.30"
|
|
WC3004DQ150M
|
15.0
|
0.17
|
0.35
|
50
|
0.30"
|
|
WC2805DQ200M
|
20.0
|
0.14
|
0.30
|
50
|
0.28"
|
|
WC2805DQ350M
|
35.0
|
0.10
|
0.20
|
50
|
0.28"
|
|
WC2806DQ500M
|
50.0
|
0.085
|
0.18
|
50
|
0.28"
|
|
WC2806DQ750M
|
75.0
|
0.075
|
0.15
|
50
|
0.28"
|
|
WC2806DQ101M
|
100.0
|
0.055
|
0.12
|
75
|
0.28"
|
|
WC2808DQ201M
|
200.0
|
0.035
|
0.08
|
150
|
0.28"
|
|
WC2808DQ501M
|
500.0
|
0.028
|
0.055
|
150
|
0.28"
|
|
WC2808DQ102M
|
1000.0
|
0.018
|
0.04
|
150
|
0.28"
|
-
110 C Switching Temperature
- 120 C Switching
Temperature
- Other
Switch Temperatures Available by Request
Definitions:
Maximum Continuous Current (Imcc)
The maximum amount of current which a PTC Thermistor must
be able to pass without switching into its high resistance
state. Expressed in Amps.
Minimum Switching Current (Imsc)
The Minimum amount of current necessary to switch the thermistor
into its high resistance state. Expressed in Amps.
|
