PTC307C Series

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Vishay Cera-Mite

Revision: 15-Jun-2022

2

Document Number: 22998

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Notes

(1)

R25 = zero power resistance measured at < 0.5 VDC, standard tolerance ± 30 %, other tolerances and values on request

(2)

RDYN = nominal dynamic resistance during inrush, measured with Vmeas. applied, for information only

(3) The maximum voltage is the voltage that appears across the PTC in a motor start application. This is not the applied line voltage.

Withstanding voltage of all UL approved types is minimum twice the specified maximum operating voltage.

(4) UL recognition following XGPU2 category of standard UL1434, file E148885

TYPICAL PTC CURRENT VS. TIME SHOWING DEFINITION OF RDYN AND SWITCH TIME (t)

ELECTRICAL DATA AND ORDERING INFORMATION

PART NUMBER

R25 (1)

± 30 %

(Ω)

RDYN (2)

(Ω)

Vmeas.

RDYN

(VRMS)

MAX.

VOLTAGE (3)

(VRMS)

MAX.

CURRENT

(ARMS)

SIZE

Ø x T

(mm)

UL (4)

TSWITCH

(°C)

PTC307C1674P

5.0

4.0

120

200

10

16 + 0.2/- 0.4

x 2.5 ± 0.25

Y

105

PTC307C1700P

6.8

5.0

120

200

10

Y

105

PTC307C1711P

10

7.2

120

200

10

Y

105

PTC307C1668P

5.0

4.0

120

180

12

17.5 ± 0.3

x 2.5 ± 0.25

Y

120

PTC307C1644P

6.8

5.0

120

200

10

Y

120

PTC307C1651P

10

7.2

120

200

10

Y

120

PTC307C1720P

20

13

120

320

8

Y

120

PTC307C1411P

3.3

2.6

120

160

12

20 + 0.2/- 0.8

x 2.5 ± 0.25

Y

120

PTC307C1484P

4.7

3.5

120

180

12

Y

120

PTC307C1544P

5.6

4.1

120

180

12

Y

120

PTC307C1399P

6.8

5.0

120

200

10

Y

120

PTC307C1489P

10

7.2

120

230

9

Y

120

PTC307C1476P

12

8.5

120

250

8.5

Y

120

PTC307C1530P

15

10.5

120

300

8

Y

120

PTC307C1531P

22

15

120

400

8

Y

120

PTC307C1282P

33

22

120

355

6

Y

120

PTC307C1533P

47

30

120

400

5

Y

120

PTC307C1292P

68

42

120

430

4

Y

120

PTC307C1487P

3.9

3.0

50

175

16

20 + 0.2/- 0.8

x 3.2 ± 0.25

Y

120

PTC307C1529P

12

10.3

100

350

8

Y

120

PTC307C1545P

14

12

100

320

8

Y

120

PTC307C1640P

30

15.9

240

380

12

Y

120

PTC307C1740P

30

15.9

240

450

7

Y

120

PTC307C1024P

38

25

240

400

9

20 + 0.2/- 0.8

x 5.0 ± 0.25

Y

120

PTC307C1409P

50

35

240

400

7.5

Y

120

PTC307C1410P

75

50

240

400

5.5

Y

120

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

Peak current

Time to Switch (s)

Motor contactor

closes

PTC switchout

Switch time (t)

h = Specific heatcapacity = 2.3 J/Kcm

3

T

0 = PTC temp. at time 0

V = PTC volume in cm

3 (D/2)2T

π

Resistance

Current

Switch time (t)

0.01

50

100

150

10

PTC Temperature °C

Switch time t

≈

h x V x (

T

switch - T0)

I2

PTC x RDYN

20 % peak current

R

DYN =

V

meas.

I

PTC max.

100

1000

10 000

0.1

1.0

10.0

Solid ceramic disc

Base electrode

Silver electrode

T

D