Resettable Ptc Products Page 79 Resettable PTC Products

POLY-FUSE Resettable PTCs 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 03/22/17 Radial Leaded > 30R Series Environmental Specifications Operating/Storage Temperature -40C to +85C Maximum Device Surface Temperature in Tripped State 125C Passive Aging +85C, 1000 hours -/+5% typical resistance change Humidity Aging +85C, 85% R.H., 1000 hours -/+5% typical resistance change Thermal Shock +85C to -40C 10 times -/+5% typical resistance change Solvent Resistance MIL-STD-202, Method 215 No change Moisture Resistance Level Level 1, J-STD-020 Physical Specifications Lead Material 0.90-1.85A: Tin-plated Copper clad steel 2.50-9.00A: Tin-plated Copper Soldering Characteristics Solderability per MIL-STD-202, Method 208 Insulating Material Cured, flame retardant epoxy polymer meets UL94V-0 requirements. Device Labeling Marked with 'LF', voltage, current rating, and date code. Soldering Parameters - Wave Soldering Pre-Heating Zone Refer to the condition recommended by the flux manufacturer. Max. ramping rate should not exceed 4C/Sec. Soldering Zone Max. solder temperature should not exceed 260C Time within 5C of actual Max. solder temperature within 3 - 5 seconds Total time from 25C room to Max. solder temperature within 5 minutes including Pre-Heating time Cooling Zone Cooling by natural convection in air. Max. ramping down rate should not exceed 6C/Sec. Preheating 160 190 220 260 0 5 max. Temperature (C) Soldering Cooling 60 min. Time(s)

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