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Performance Of Pb Free Solder Pastes At Different Reflow

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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
Alpha Reflow Profiles
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
Indium Reflow Profiles
Reflow Procedure ,[object Object],[object Object],[object Object],[object Object]
Reflow Procedure ,[object Object],[object Object],[object Object],[object Object],[object Object]
Defects Analysis
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
[object Object],[object Object],Solder Balling Solder Balling Solder Balling
Solder Balling ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
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
Dewetting ,[object Object],[object Object],[object Object],[object Object]
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
Por
Comparison of three specification ,[object Object],In-Spec Below-Spec Above-Spec

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Performance Of Pb Free Solder Pastes At Different Reflow

  • 1. Performance of Pb-free Solder pastes at different reflow profiles
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  • 8. 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
  • 9. 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
  • 11. 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
  • 12. 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
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