Littelfuse LoRho Surface Mount PPTC (Polymer Positive
Temperature Coefficient) devices provide overcurrent
protection for applications where ultra low internal
resistance, ultra low voltage drop and automatic
resettable protection are desired. This new series allows
a higher hold current device in a smaller factor and lower
profile as compared to a standard PPTC. It offers ultra
low internal resistance while maintaining the high level
electrical characteristics and performances of standard
PPTC products. All devices are UL recognized and TUV
approved and have maximum fault current of 50A. They
are available in 0402 to 2920 sizes while the hold current
ranges from 100mA to 7A.
Littelfuse 0402 size LoRho SMD PPTC is the smallest
size surface mounted PPTC device available in the
market.
E183209
R50119118
Applications
• USB peripherals including
new USB 3.0 / 2.0 ports
• Li-ion / Li-Polymer battery
packs
• Smart phones
• Tablet and Notebook PCs
• E-readers
• LCD / LED HDTV
• Computer periperals
• Digital cameras and video
cameras
• Hard disk drives
• Game consoles
Features
• Ultra low internal
resistance
• Very thin profile
• Miniature size saves
board space
• Allows a higher hold
current dvice in a smaller
factor and lower profile as
compared to a standard
PPTC
• Fast response to fault
currents
• 0402 size available - the
smallest PPTC in the
market
• Compatible with high
temperature solders
• Broadest range of Hold
Current ratings (100mA
to 7A)
• RoHS compliant, Lead
Free and Halogen Free
• UL recognized and TUV
approved
• 0603L150SL ideal for
USB 3.0
Additional Information
Datasheet
Resources
Samples
WARNING
• Users shall independently assess the suitability of these devices for each of their applications
• Operation of these devices beyond the stated maximum ratings could result in damage to the devices and lead to electrical arcing and/or fire
• These devices are intended to protect against the effects of temporary over-current or over-temperature conditions and are not intended to perform as protective devices where such
conditions are expected to be repetitive or prolonged in duration
• Exposure to silicon-based oils, solvents, electrolytes, acids, and similar materials can adversely affect the performance of these PPTC devices
• These devices undergo thermal expansion under fault conditions, and thus shall be provided with adequate space and be protected against mechanical stresses
• Circuits with inductance may generate a voltage (L di/dt) above the rated voltage of the PPTC device.
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