307C Motorstart Thermistors
Vishay Cera-Mite
PTCR Motor Start Pellets
SOLID CERAMIC
DISC
APPLICATION DATA
• Complete range of size/resistance combinations for 120 and 240 volt
compressor motors.
BASE
ELECTRODE
• Rugged silver electrodes well suited for long life pressure contact
mounting.
D
• Withstand voltage is 2 times Voltage Max. rating.
• Application engineering assistance provided for custom
pellet designs.
SILVER
ELECTRODE
T
PTCR MOTOR START PELLETS
VOLTAGE CURRENT DIAMETER (D) x
MAX.
MAX.
THICKNESS (T)
PART
R
25
(OHMS) R
DYN
(OHMS) (V
RMS
)
(A
RMS
)
(mm)
NUMBER
5
4
200
10
16 x 2.5
307C1674*
5.5
4.2
180
12
16 x 2.5
307C1670
6.8
5
200
10
16 x 2.5
307C1700*
8
5.8
150
10
16 x 2.5
307C1280
10
7.2
200
10
16 x 2.5
307C1711*
10
7.2
200
10
16 x 2.5
307C1713
20
13.5
250
7.5
16 x 2.5
307C1490
47
30
300
6.5
16 x 2.5
307C1136
68
42
300
5.5
16 x 2.5
307C1043
4
3.2
180
15
17.5 x 2.5
307C1614
5
4
180
12
17.5 x 2.5
307C1668
6.8
5
200
10
17.5 x 2.5
307C1644
10
7.2
200
10
17.5 x 2.5
307C1651
15
10.5
265
6
17.5 x 2.5
307C1190
20
13
320
8
17.5 x 2.5
307C1720
25
17
300
7.5
17.5 x 2.5
307C1066
33
22
300
6.5
17.5 x 2.5
307C1040
47
30
350
4
17.5 x 2.5
307C1284
68
42
400
4
17.5 x 2.5
307C1283
3.3
2.6
160
12
20 x 2.5
307C1411
4.7
3.5
180
12
20 x 2.5
307C1484
5.6
4.1
180
12
20 x 2.5
307C1544
6.8
5
200
10
20 x 2.5
307C1399
10
7.2
230
9
20 x 2.5
307C1489
12
8.5
250
8.5
20 x 2.5
307C1476
15
10.5
300
8
20 x 2.5
307C1530
22
15
400
8
20 x 2.5
307C1531
33
22
355
6
20 x 2.5
307C1282
47
30
400
5
20 x 2.5
307C1533
68
42
430
4
20 x 2.5
307C1292
3.9
3 (@ 50V)
175
16
20 x 3.2
307C1487
12
10.3 (@ 100V)
350
8
20 x 3.2
307C1529
14
12 (@ 100V)
350
8
20 x 3.2
307C1545
30
15.9 (@ 240V)
380
12
20 x 3.2
307C1640
25
18 (@ 240V)
400
9
20 x 5.0
307C1518
38
25 (@ 240V)
400
9
20 x 5.0
307C1024
50
35 (@ 240V)
400
7.5
20 x 5.0
307C1409
75
50 (@ 240V)
400
5.5
20 x 5.0
307C1410
R
25
= zero power resistance
±
30% at 25°C; other tolerances available.
R
DYN
= nominal dynamic (effective) resistance, 120V applied unless otherwise noted.
*High performance ceramic formulation, lower transition temperature provides reduced
power consumption for energy concious applications.
Note:
All motor start pellets receive 100% resistance and 100% voltage pulse burn-in
simulating actual motor start-up.
Note:
Selected pellets carry UL recognition per File E107611.
Note:
Usage requires packaging materials appropriate for maximum pellet surface
temperature of 180°C.
RESISTANCE
Vishay Cera-Mite offers a complete line of PTCR
motor start pellets designed for OEM pressure
contact mounting. Compressor and refrigerator
manufacturers, as well as selected HVAC after-
market distributors have chosen to design and
build their own proprietary motor start devices.
Such cost effective units allow for unique mounting
styles, special terminal arrangements, and
combination devices including start capacitors or
overload protectors.
FOR USE IN:
Motor Start Relays
Combination Assemblies
Document Number: 23087
Revision 14-May-02
ceramite.support@vishay.com
www.vishay.com
9
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