PTC Over Current Protector - 135 C Switching Temperature


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.




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