PTC Over Current Protector - 120 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 - 120 C Switching Temperature

Part Number

W @ 25C +/- 20% 

Max. Continuous Current (Amps)

Min. Switching Current (Amps)

Maximum
Voltage

Maximum
Diameter

WC8004DA0R8

0.8

1.0

2.00

12

0.80"

WC6004DA1R0M

1.0

0.75

1.50

15

0.65"

WC5504DA1R5M

1.5

0.60

1.20

20

0.60"

WC5504DA2R0M

2.0

0.50

1.00

25

0.60"

WC4004DA5R0M

5.0

0.25

0.50

25

0.45"

WC4004DA7R5M

7.5

0.22

0.45

50

0.45"

WC4004DA100M

10.0

0.19

0.40

50

0.45"

WC4004DA150M

15.0

0.15

0.30

50

0.45"

WC3005DA200M

20.0

0.12

0.25

50

0.35"

WC4006DA100M

50.0

0.080

0.16

50

0.45"

WC3505DA750M

75.0

0.065

0.14

50

0.40"

WC3505DA101M

100.0

0.055

0.12

50

0.40"

WC2505DA101M

200.0

0.035

0.080

75

0.28"

- 110 C Switching Temperature
- 135 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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