HMC Electronics R500 Kester Solder Paste User Manual
R500, Product description, Standard applications
R500
R500
Dispensable Water-soluble Solder Paste
Dispensable Water-soluble Solder Paste
for Leaded Alloys
for Leaded Alloys
Product Description
Kester R500 is a water-soluble solder paste
formula specifically designed as a consistent dot
dispensing paste for automated dispense equipment.
This solder paste exhibits excellent wetting
characteristics in a wide range of profiles. The
activator package in this formula is extremely
aggressive. It is active enough to remove tenacious
oxide layers or to solder to OSP coated boards.
Kester R500 is a water soluble formula that
maintains its activity and tackiness characteristics
for up to 8 hours.
• Excellent dispensing characteristics using 21
gauge needles and Type 3 powder
• Capable of dispensing rate of 4 dots per
second
• Leaves bright/shiny solder joints after reflow
• Packaged Void-Free
• Scrap is reduced due to minimal paste clog-
ging and separation
• Residues easily removed with DI water
• Classified as ORM0 per J-STD-004
Standard Applications
86% Metal -- Syringe Dispensing
Physical Properties
Data given for Sn63Pb37 86% metal, -325+500 mesh
Viscosity (typical): 1000 poise
Malcom viscometer @ 10rpm and 25°C
Initial Tackiness (typical): 45 grams
Tested to J-STD-005, IPC-TM-650, Method 2.4.44
Slump Test: Pass
Tested to J-STD-005, IPC-TM-650, Method 2.4.35
Solder Ball Test: Preferred
Tested to J-STD-005, IPC-TM-650, Method 2.4.43
Wetting Test: Pass
Tested to J-STD-005, IPC-TM-650, Method 2.4.45
Reliability Properties
Copper Mirror Corrosion: Low
Tested to J-STD-004, IPC-TM-650, Method 2.3.32
Corrosion Test: Low
Tested to J-STD-004, IPC-TM-650, Method 2.6.15
Silver Chromate: Pass
Tested to J-STD-004, IPC-TM-650, Method 2.3.33
Chloride and Bromides: None Detected
Tested to J-STD-004, IPC-TM-650, Method 2.3.35
Fluorides by Spot Test: Pass
Tested to J-STD-004, IPC-TM-650, Method 2.3.35.1
SIR, IPC (typical): Pass
Tested to J-STD-004, IPC-TM-650, Method 2.6.3.3
Blank
R500
Day 1
1.9
×10
10
Ω
1.4
× 10
8
Ω
Day 4
1.1
×10
10
Ω
2.0
× 10
8
Ω
Day 7
8.3
×10
9
Ω
8.3
× 10
9
Ω
Documentation Provided By HMC Electronics
33 Springdale Ave. Canton, MA 02021
(800) 482-4440