Performance Of Pb Free Solder Pastes At Different Reflow

Performance of Pb-free Solder pastes at different reflow profiles

Primary Objective ,[object Object],[object Object],[object Object],[object Object]

Secondary Objective ,[object Object],[object Object],[object Object],[object Object]

Alpha Pb-free Specification ,[object Object],[object Object],[object Object],[object Object]

Indium 5.1 Pb-free Specification ,[object Object],[object Object],[object Object],[object Object]

Project Description ,[object Object],[object Object],[object Object]

Profiling Procedure ,[object Object],[object Object],[object Object],[object Object]

Alpha Reflow Statistics Profile Ramp Rate (°C/Sec) Soak Temperature TAL (Seconds) Peak Temp (°C) Alpha Above-Spec 2.8 130 °C to 217 °C 134.7 270.5 Alpha In-Spec 1.2 130 °C to 217 °C 64.3 241.4 Alpha Below Spec 1.1 130 °C to 217 °C 19.6 220.2

Zone Temperatures for Alpha Paste Profile Conveyor Speed Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Zone 6 Alpha Above-Spec 38 153 187 212 249 268 281 Alpha In-Spec 36 86 116 148 193 235 256 Alpha Below Spec 35 65 94 124 164 201 240

Indium Reflow Statistics Profile Ramp Rate (°C/Sec) Soak Temperature TAL (Seconds) Peak Temp (°C) Indium Above-Spec 1.7 200 °C to 210°C 124.5 268.1 Indium In-Spec 1.3 200 °C to 210°C 62.5 239.7 Indium Below-Spec 1.1 200 °C to 210°C 7 218.2

Zone Temperatures for Indium Paste Profile Conveyor Speed Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Zone 6 Indium Above-Spec 29 125 166 205 211 257 282 Indium In-Spec 31 104 139 173 217 201 254 Indium Below-Spec 35 84 110 130 161 190 240

Reflow Procedure ,[object Object],[object Object],[object Object],[object Object]

Reflow Procedure ,[object Object],[object Object],[object Object],[object Object],[object Object]

Anticipated Defects ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Solder Balling ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],Solder Balling Solder Balling Solder Balling

Cold Solder ,[object Object],[object Object],[object Object]

[object Object],[object Object],Cold Solder Soldered Region Cold Solder Cold Solder

Cold Solder ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Non-Wetting ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],Non-Wetting Non-Wetting

Non-Wetting ,[object Object],[object Object],[object Object],[object Object],[object Object]

Dewetting ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],Dewetting Dewetting

Flux Splatter ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],Flux Spatter Flux Spatter

Craters ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],Craters Crater Craters

[object Object],[object Object],Craters Crater Crater

Flux Charring ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],Flux Charring Flux charring Flux charring

Scratches ,[object Object],[object Object]

Uneven Surfaces ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],Uneven Surfaces

Oxidation ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],Oxidation

Comparison of three specification ,[object Object],In-Spec Below-Spec Above-Spec

Performance Of Pb Free Solder Pastes At Different Reflow

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