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COSEL Power Supply, Noise Filter 2025 Product Catalog
AC-DC Power Supplies Bus Converter . Power Module Type TUNS300F, TUNS500F, TUNS700F, TUNS1200F Instruction Manual7 Lifetime expectancy depends onstress by temperature difference!Regarding lifetime expectancy design of solder joint, followingcontents must be considered.It must be careful that the soldering joint is stressed by temperaturerise and down which is occurred by self-heating and ambienttemperature change.The stress is accelerated by thermal-cycling, therefore the temperaturedifference should be minimized as much as possible iftemperature rise and down is occurred frequently.!Product lifetime expectancy depends on the aluminum base platecentral temperature difference (DTc) and number of cycling in aday is shown in Fig.7.1.If the aluminum base plate center part temperature changes frequentlyby changing output load factor etc., the above the lifetimeexpectancy design should be applied as well.Please contact us for details.8 Others8.1 Medical electrical equipment?TUNS1200F!TUNS1200F fi t 2MOOP2MOOPprimary secondary1MOOPSafety GNDFig.8.1 Medical Isolation Grade(TUNS1200F12, TUNS1200F28, TUNS1200F48)Lifetime expectancy [years]1051time ON/OFF /1day2times ON/OFF /1day3times ON/OFF /1day4times ON/OFF /1day5times ON/OFF /1day025 30 35 40 45 50 55 60 65 70The aluminum base plate central temperature differenceDTc [C]1MOOP2MOOPprimary secondary1MOOPSafety GNDFig.7.1 Lifetime expectancy against rise/fall temperature differenceFig.8.2 Medical Isolation Grade(TUNS1200F65)Application manuals available at our website.Recommended external components are also introduced for yourreference.! It is required to have fuses on both line then applying for medicalapprovals.! Select the decoupling capacitor CY1 of which the leakage currentdoes not exceed 0.5mA.HeatsinkAC INF1F2NoisefilterFG FGC1+S+VOUTAC1TUNS1200FAC2-VOUTFG R +BC -BC -SCo+LoadC3+TFR1CbcC2CY1CY2Fig.8.3 External components when applying for medical approvalsTUNS-31
