Positive Temperature Coefficient devices (PTCs) 2017 by Littelfuse

More catalogs by Littelfuse | Positive Temperature Coefficient devices (PTCs) 2017 | 128 pages | 2017-11-12


Page 79 of Positive Temperature Coefficient devices (PTCs) 2017

poly-fuse® resettable ptcs radial leaded 30r series soldering parameters wave soldering max ramping rate should not exceed 4°c/sec max solder temperature should not exceed 260°c soldering zone time within 5°c of actual max solder temperature within 3 5 seconds soldering 260 cooling 220 temperature °c pre-heating zone refer to the condition recommended by the flux manufacturer 190 160 preheating total time from 25°c room to max solder temperature within 5 minutes including pre-heating time cooling by natural convection in air cooling zone physical specifications lead material soldering characteristics 0 max ramping down rate should not exceed 6°c/sec 0.90-2.50a tin-plated copper clad steel 3.00-9.00a tin-plated copper 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 © 2015 littelfuse inc specifications are subject to change without notice revised 11/05/15 60 min 5 max times environmental specifications operating/storage temperature -40°c to +85°c maximum device surface temperature in tripped state 125°c passive aging +85°c 1000 hours 5 typical resistance change humidity aging +85°c 85 r.h 1000 hours 5 typical resistance change thermal shock +85°c to -40°c 10 times 5 typical resistance change solvent resistance mil–std–202 method 215 no change moisture resistance level level 1 j–std–020