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Ultra-Small 0603 PPTC Resettable Overcurrent Protection

  • Overview
  • Features & Applications
  • Specifications
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0603L Surface Mount PPTC Series

Littelfuse 0603L SeriesLittelfuse is pleased to introduce the new 0603L surface mount PPTC (polymer positive temperature coefficient thermistor) series, the newest and smallest edition to the Littelfuse Polyfuse® PTC line.

Available in 4 hold current ranges 0.10A, 0.20A, 0.25A and 0.35A, each device is certified by both TUV and UL and possess a maximum fault current rating of 40A.

Similar to traditional fuses though automatically resettable, PPTCs provide overcurrent protection of sensitive electronics. PPTCs increase resistance as temperature increases due to increased current flow. They limit unsafe currents while allowing constant safe current levels, and reset when the current and temperature returns to a safe level.

PPTCs are typically used in sensitive electronic applications where frequent over-current conditions can occur, constant system uptime is required, and automatic resetting desired.

With its ultra-small size and resetability, the 0603L series is ideal where miniaturization is desired, space is limited, and limited accessibility (due to size or location) is a factor.
   Features    Benefits
  • Fast Response to Fault Currents
  • Resettable
  • Low Profile
  • Compact Design Saves Board Space
  • No other company currently offers the ultra-small size and ranges available in this type of PPTC device
  • RoHS Compliant / Lead Free and TUV and UL Certified
  • Compatible with High Temperature Solders
  • Low Resistance
   DatasheetRoHS Compliant
  • Reliable and Resettable Overcurrent Protection for Sensitive Electronics
  • Low Maintenance Alternative
  • Can Serve the Smallest of Devices
  • Environmental and Import/Export Friendly
  • May be a better alternative than a fuse
    for the application
  • A great overcurrent protection alternative for miniature devices
  • Hand held devices:
    Cell phone, MP3, Camera, PDA
  • Computer/peripherals:
    Audio/Data/video cards, LCD displays, USB Thumb Drives and other data storage devices
Physical Specifications
Terminal Material Solder-Plated Copper / Solder Material: Matte Tin (Sn)
Lead Solderability Meets EIA Specifications RS186-9E, ANSI/J-STD-002, Category 3
Environmental Specifications
Operating/Storage Temp. -40°C to +85°C
Max. Device Surface Temp. 125°C (in Tripped State)
Passive Aging +85°C, 1000 hours
-/+ 15% typical resistance change
Humidity Aging +85°C, 85% R.H., 100 hours
-/+15% typical resistance change
Thermal Shock MIL-STD-202, Method 107G
+85°C/-40°C 20 times
-30% typical resistance change
Solvent Resistance MIL-STD-202, Method 215 / No change
Vibration MIL-STD-883C, Method 2007.1, Condition A / No change
Moisture Sensitivity Level Level 2, J-STD-020C
Littelfuse P/N
Digi-Key P/N
Hold Current
Voltage Rating
Packaging Option
Tape & Reel (TR)
Cut Tape (CT)
Tape & Reel (TR)
Cut Tape (CT)
Tape & Reel (TR)
Cut Tape (CT)
Tape & Reel (TR)
Cut Tape (CT)