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uPD789074 Subseries 8-Bit Single-Chip Microcontrollers UD - Home

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CHAPTER 18 RECOMMENDED SOLDERING CONDITIONSThe µPD789071, 789072, and 789074 should be soldered and mounted under the following recommendedconditions.For soldering methods and conditions other than those recommended below, contact an NEC Electronics salesrepresentative.For technical information, see the following website.Semiconductor Device Mount Manual (http://www.necel.com/pkg/en/mount/index.html)Table 18-1. Surface Mounting Type Soldering Conditions (1/2)µPD789071MC-×××-5A4: 30-pin plastic SSOP (7.62 mm (300))µPD789072MC-×××-5A4: 30-pin plastic SSOP (7.62 mm (300))µPD789074MC-×××-5A4: 30-pin plastic SSOP (7.62 mm (300))µPD789071MC(A)-×××-5A4: 30-pin plastic SSOP (7.62 mm (300))µPD789072MC(A)-×××-5A4: 30-pin plastic SSOP (7.62 mm (300))µPD789074MC(A)-×××-5A4: 30-pin plastic SSOP (7.62 mm (300))Soldering Method Soldering Conditions Recommended ConditionSymbolInfrared reflowVPSWave solderingPackage peak temperature: 235°C, Time: 30 seconds max.(at 210°C or higher), Count: Three times or lessPackage peak temperature: 215°C, Time: 40 seconds max.(at 200°C or higher), Count: Three times or lessSolder bath temperature: 260°C max., Time: 10 seconds max., Count:Once, Preheating temperature: 120°C max. (package surfacetemperature)IR35-00-3VP15-00-3WS60-00-1Partial heating Pin temperature: 350°C max., Time: 3 seconds max. (per pin row) −µPD78F9076MC-5A4: 30-pin plastic SSOP (7.62 mm (300))Soldering Method Soldering Conditions RecommendedCondition SymbolInfrared reflowVPSWave solderingPackage peak temperature: 235°C, Time: 30 seconds max. (at 210°C or higher),Count: Three times or less, Exposure limit: 7 days Note(after that, prebaking is necessary at 125°C for 10 hours)Package peak temperature: 215°C, Time: 40 seconds max. (at 200°C or higher),Count: Three times or less, Exposure limit: 7 days Note(after that, prebaking is necessary at 125°C for 10 hours)Solder bath temperature: 260°C max. , Time: 10 seconds max.,Count: OncePreheating temperature: 120°C max. (package surface temperature), Exposurelimit: 7 days Note (after that, prebake at 125°C for 10 hours)IR35-107-3VP15-107-3WS60-107-1Partial heating Pin temperature: 350°C max., Time: 3 seconds max. (per pin row) –Note After opening the dry pack, store it at 25°C or less and 65% RH or less for the allowable storage period.Caution Do not use different soldering methods together (except for partial heating).User’s Manual U14801EJ3V1<strong>UD</strong> 223

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