Resettable Ptc Products Page 113 Resettable PTC Products

POLY-FUSE Resettable PTCs 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 03/22/17 Radial Leaded > 265R Series Environmental Specifications Operating/Storage Temperature -40C to +85C Maximum Device Surface Temperature in Tripped State 125C Passive Aging 65C/85C, 1000 hours Humidity Aging +85C, 85% R.H,.1000 hours Thermal Shock MIL-STD-202, Method 107 +125C to -55C 10 times Solvent Resistance MIL-STD-202, Method 215 Moisture Sesitivity Level Level 1, J-STD-020C Physical Specifications Lead Material Tin-plated Copper Soldering Characteristics Solderability per MIL-STD-202, Method 208E 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 Condition Wave Soldering Peak Temp/ Duration Time 260C < 5 Sec > 220C 2 Sec ~ 20 Sec Preheat 140C ~ 180C 180 Sec ~ 210 Sec Storage Condition 0C~35C < 70%RH Recommended soldering methods: heat element oven or N 2 environment for lead-free. Devices are designed to be wave soldered to the bottom side of the board. Devices can be cleaned using standard industry methods and solvents. This profile can be used for lead-free device Note: If soldering temperatures exceed the recommended profile, devices may not meet the performance requirements. Preheating 160 190 220 260 0 2 to 5 Temperature (C) Soldering Cooling 20-30 180 to 210 Time(s) 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. Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at

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