PTC307C Series
www.vishay.com
Vishay Cera-Mite
PTC Thermistors Motor Start Pellets
FEATURES
• Rugged silver electrodes well suited for long life
OEM pressure contact mounting
• Various pellet sizes for optimum inrush current
and switching time
• Withstanding voltage is 2 times the maximum voltage
rating
• UL approved pellets
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• Single Phase motorstart assist in
• Refrigerator systems
• Airconditioning systems
• Heat-pumps
QUICK REFERENCE DATA
• Small compressors
• Inrush current generation
PARAMETER
VALUE
3.3 to 75
30
UNIT
Ω
DESCRIPTION
Resistance value at 25 °C
Tolerance on resistance value
Current ratings
These directly heated thermistors have
a
positive
%
temperature coefficient and are primarily intended for inrush
current generation. They consist of a high grade ceramic
disk with two rugged pattern silver electrodes for contact
pressure mounting. These ceramic pellets can be build into
proprietary motor start devices for compressor, refrigerator
and HVAC OEMs.
4 to 16
ARMS
s
Switching times (typical)
Maximum voltage rating
Operating temperature range
0.25 to 1.0
160 to 450
-10 to +85
VRMS
°C
MOUNTING
The PTC thermistor pellets are suitable for pressure contact
mounting in application specific housing assemblies.
Examples of such assemblies can be found in the PTC305C
series. Assembly housing must be appropriate for usage up
to 180 °C surface temperature of the PTC pellets.
Storage temperature range
-25 to +105
°C
The pellets are not solderable.
MARKING
The pellets are not marked. Marking is available on request
for customized parts.
SAFETY AGENCY RECOGNITION
Vishay Cera-Mite motor start PTC pellet thermistors are
recognized by Underwriter Laboratories file E148885 in
accordance with Standard for Thermistor Type Devices
UL 1434; and Canadian Standards C22.2 No. 0-1991.
Revision: 11-Aug-10
Document Number: 22998
1
For technical questions, contact: ceramitesupport@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000