tacky assembly flux
DESCRIPTION
Tacky Assembly Fluxes mainly applies for Ball Attach, PoP & Direct Attach, SMT & ReworkTRANSCRIPT
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TACKY ASSEMBLY TACKY ASSEMBLY FLUXESFLUXES
1616 JJul.ul. 20092009
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Typical Applications
1) SMT & Rework
2) Ball-Attach (BA)
3) Package on Package (PoP)
4) Stud Bumping (SB)
BGA Back End Component Flip Chip Component
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Typical ApplicationsAu Wire
Solder sphereTacky Flux
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Product OverviewTACKYFLUXES & PASTES
Dispensing
Printing
Dipping
Water-Clean No-Clean
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SC88 Key Benefits
DISPENSING APPLICATION ONLY
Product Overview
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SC88 Key BenefitsAir free filled syringes, no misses.Compatible with epoxy under fill (REL0 formulation).Adapted for lead-bearing and lead-free alloys.Suitable for fast dispensing (1mg in 100ms) without choking.Regular dots from Day 1 to Day 5 at 22-24°C.No component movement.Thermally stable at up to 280°C.Low, clear no-clean post-soldered flux residue.Easy-clean formula, if desired (isopropanol, Zestron & Vigon products).
Properties desired for Tacky Flux
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Dispensing Printing
Flux Type: No-CleanApplication: Dispensing
AF 218-1 AF 218-2
Solids content: 39 %Density @25°C: 0.92 g/cm3
Viscosity @25°C: 12 000 cPPeak Tack Force: 2.8 g/mm2
Flux Type: REL0SIR (J-STD-004): 1 x 108 ΩSIR (Bellcore): >2 x 104 MΩCopper Mirror: PassAg chromate test: Pass
Solids content: 70 %Density @25°C: 0.92 g/cm3
Viscosity @25°C: 18 000 cPPeak Tack Force: 3.7 g/mm2
Flux Type: ROL0SIR (J-STD-004): 1 x 108 ΩSIR (Bellcore): >2 x 104 MΩ aCopper Mirror: PassAg chromate test: Pass
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Dispensing PrintingAF 918-1 AF 918-2
Flux Type: Water-CleanApplication: Dispensing
Solids content: 80 %Density @25°C: 0.95 g/cm3
Viscosity @25°C: 42 000 cPPeak Tack Force: 1.8 g/mm2
Flux Type: ORL0SIR (J-STD-004)*: >1 x 108 ΩSIR (Bellcore)*: >2 x 104 MΩ
* after cleaning
Solids content: 80 %Density @25°C: 0.95 g/cm3
Viscosity @25°C: 32 000 cPPeak Tack Force: 1.5 g/mm2
Flux Type: ORH1SIR (J-STD-004)*: >1 x 108 ΩSIR (Bellcore)*: >2 x 104 MΩ
* after cleaning
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Dispensing Dispensing performanceperformance
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Dispensing performanceDispensing performanceWhat most assemblers expectWhat most assemblers expect
• Regular deposits at 20-25°C
• Homogeneous through complete use of syringe
• No choking at 20-25°C up to 5 days.
• Deposits remain tacky up to 16 hours
• Steady dispensing equipment
AF 218 0,4mm; 1 bar; 100 ms
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Soldering Soldering performanceperformance
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Suitable Temperature ProfilesSuitable Temperature ProfilesAF 218 & AF 918 SAC 305AF 218 & AF 918 SAC 305 (Alpha Lead(Alpha Lead--free tinfree tin--bar)bar)
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMIIII
Tpeak 245°C
Tliq217°C 30-45s
Time/s
Temp/°C
Ramp: 1-2 °C/s
Hallway Reflow Profile
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Amkor Reflow Profile
Suitable Temperature ProfilesSuitable Temperature ProfilesAF 918 SAC 305AF 918 SAC 305
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Stats ChipPAC Reflow Profile
Suitable Temperature ProfilesSuitable Temperature ProfilesAF 918 SAC 305AF 918 SAC 305
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Soldering performanceSoldering performanceAF 918 SAC 305 600AF 918 SAC 305 600µµm BGA spheresm BGA spheres
AF 918
Senju WF6300LFHV
OSP Cu ENIG
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AFD 218AFD 218AFD 218AFD 218IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIAF 918 IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIISenju WF6300LFHV
IIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
Soldering performanceSoldering performanceAF 918 SAC 305 600AF 918 SAC 305 600µµm BGA spheresm BGA spheres
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Soldering performanceSoldering performanceAF 218 with 600AF 218 with 600µµm SAC 305 spheres (air)m SAC 305 spheres (air)
Reflection from camera‘s LEDs
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RELIABILITY TESTRELIABILITY TESTAF 918 Sn96.5Ag3.6 600AF 918 Sn96.5Ag3.6 600µµm spherem sphere
High reliability for good circuit functionHigh reliability for good circuit function
Ball Cross-sectionBall-Shear
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Low void content (<3%)Low void content (<3%)
RELIABILITY TESTRELIABILITY TESTAF 918 Sn96.5Ag3.6 600AF 918 Sn96.5Ag3.6 600µµm spherem sphere
IMC’s
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Low void content (<1%)Low void content (<1%)
RELIABILITY TESTRELIABILITY TESTAF 918 Sn96.5Ag3.6 600AF 918 Sn96.5Ag3.6 600µµm spherem sphere
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Cleaning Cleaning performanceperformance
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Cleaning performanceCleaning performanceBefore cleaningBefore cleaning After cleaningAfter cleaning
1. In-line DI water cleaner
2. Water temperature: 60C
3. Belt speed of 1 m/min
4. Pressure: 60PSI spray.
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Free of flux and solder debris after cleaning
Excellent cleaning performance
Bright solder surface
Consistently good results at different cleaning stations
Cleaning performanceCleaning performance
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Key benefitsKey benefits
Regular flux shots and stable dispensingNo component movementLong green strength (minimum 2 hours for a 1mm3 dot)Excellent wettingExcellent cleaning performanceLow solder void contents (<1%)
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Thank You