We have pioneered PPTC technology for over twenty years. Whether for design or volume application, our Raychem radial-leaded PolySwitch devices represent the most comprehensive and complete set of PPTC products available in the industry today. Our AGRF, AHEF and AHRF product lines are qualified per PS400 derived from AECQ200 for automotive applications.
Part Numbering System for PolySwitch Radial-leaded Devices
Agency Recognition for PolySwitch Radial-leaded Devices
Standard
Title
File Number
UL
Thermistor Type Devices
E74889
CSA
Electronic Components-Thermistors- PTC
CA78165
TÜV
Certificate number available on request (per IEC 60730-1)
Operation beyond the maximum ratings or improper use may result in device damage and possible electrical arcing and flame.
The devices are intended for protection against damage caused by occasional overcurrent or overtemperature fault conditions and should not be used when repeated fault conditions or prolonged trip events are anticipated.
Contamination of the PPTC material with certain silicon-based oils or some aggressive solvents can adversely impact the performance of the devices.
Device performance can be impacted negatively if devices are handled in a manner inconsistent with recommended electronic, thermal, and mechanical procedures for electronic components.
PPTC devices are not recommended for installation in applications where the device is constrained such that its PTC properties are inhibited, for example in rigid potting materials or in rigid housings, which lack adequate clearance to accommodate device expansion.
Operation in circuit with a large inductance can generate a circuit voltage (L di/dt) above the rated voltage of the device.
Application Limitation for the LVR Product Line
A PPTC device is not a fuse - it is a nonlinear thermistor that limits current. Under a fault condition all PPTC devices go into a high resistance state but do not open circuit, so hazardous voltage may be present at PPTC locations.
The devices are intended for protection against damage caused by occasional overcurrent or overtemperature fault conditions and should not be used when repeated fault conditions or prolonged trip events are anticipated.
In most applications, power must be removed and the fault condition cleared in order to reset a PPTC device. However, under certain unusual conditions, a PPTC device may automatically reset. PPTC devices should not be used in an application where an automatic reset could create a safety hazard, such as garbage disposals and blenders. Appropriate qualification testing should be performed.
It is the responsibility of the user to determine the need for back up or failsafe protection to prevent damage that may occur in the event of abnormal function or failure of the PPTC device.
Operation in circuits with a large inductance can generate a circuit voltage (L di/dt) above the rated voltage of a PPTC device. This product should not be used in an application where the maximum interrupt voltage or maximum interrupt current can be exceeded by inductive spikes.
Devices are not recommended for reflow soldering.
Device performance can be impacted negatively if devices are handled in a manner inconsistent with recommended electronic, thermal, or mechanical procedures for electronic components.
PPTC devices are not recommended for installation in applications where the device is constrained such that its PTC properties are inhibited, for example in rigid potting materials or in rigid housings, which lack adequate clearance to accommodate device expansion.
Contamination of the PPTC material with certain silicone-based oils or some aggressive solvents can adversely impact the performance of the devices.
We have pioneered PPTC technology for over twenty years. Whether for design or volume application, our Raychem radial-leaded PolySwitch devices represent the most comprehensive and complete set of PPTC products available in the industry today. Our AGRF, AHEF and AHRF product lines are qualified per PS400 derived from AECQ200 for 
