Availability, Printing parameters, Recommended reflow profile – HMC Electronics HM531 Kester Solder Paste User Manual
Page 2: Cleaning, Storage, handling, and shelf life, Health & safety
Application Notes
Availability:
HydroMark 531 is commonly available in the Sn63Pb37 and Sn62Pb36Ag02 alloys. Type 3 powder mesh
is recommended, but different powder particle size distributions are available for standard and fine pitch
applications. For specific packaging information see Kester’s Solder Paste Packaging Chart for available
sizes. The appropriate combination depends on process variables and the specific application.
Printing Parameters:
Squeegee Blade
80 to 90 durometer polyurethane or stainless steel
Squeegee Speed
Capable to a maximum speed of 150 mm/sec (6 in/sec)
Stencil Material
Stainless Steel, Molybdenum, Nickel Plated, Brass
Temperature/Humidity
Optimal ranges are 21-25°C (70-77°F) and 30-70% RH
Recommended Reflow Profile:
The recommended reflow profile for HM531 made with
either the Sn63Pb37 or Sn62Pb36Ag02 is shown here
.
This profile is simply a guideline. Since HM531 is a
highly active, water-soluble solder paste, it can solder
effectively over a wide range of profiles. Your optimal
profile may be different from the one shown based on
your oven, board and mix of defects. Please contact
Kester if you need additional profiling advice.
Cleaning:
HM531 residues are best removed using automated cleaning equipment (in-line or batch) within 48 hours of
soldering. De-ionized water is recommended for the final rinse. Water temperatures should be
49–60°C(120-140°F). Kester’s 5768 Bio-Kleen
®
saponifier can also be used in a 1-2% ratio for aqueous
cleaning systems.
Storage, Handling, and Shelf Life:
Refrigeration is the recommended optimum storage condition for solderpaste to maintain consistent viscosity,
reflow characteristics and overall performance. HM531 should be stabilized at room temperature prior to
printing. HM531 should be kept at standard refrigeration conditions, 0-10°C (32-50°F). Please contact
Kester if you require additional advice with regard storage and handling of this material. Shelf life is 6 months
from date of manufacture when handled properly and held at 0-10°C (32-50°F).
Health & Safety:
This product, during handling or use, may be hazardous to health or the environment. Read the Material
Safety Data Sheet and warning label before using this product.
World Headquarters: 800 West Thorndale Avenue, Itasca, Illinois, 60143-1341 USA
Phone: (+1) 630-616-4000 • Email: [email protected] • Website: www.kester.com
Kester Reflow Profile
Alloy: Sn63Pb37 or Sn62Pb36Ag02
0
20
40
60
80
100
120
140
160
180
200
220
240
0
30
60
90
120
150
180
210
240
270
300
330
Time (sec.)
T
em
p
er
at
u
re
(
C
)
Time to Peak Temperature
3.5-5.0 min. typical
5.5 min max
Soaking Zone
(120 sec. max.)
30-60 sec. typical
Reflow Zone
45-75 sec. typical
Peak Temp.
210 - 225 C
<1.8 C/Sec
Asia Pacific Headquarters
500 Chai Chee Lane
Singapore 469024
(+65) 6449-1133
European Headquarters
Zum Plom 5
08541 Neuensalz
Germany
(+49) 3741 4233-0
Japanese Headquarters
20-11 Yokokawa 2-Chome
Sumida-Ku
Tokyo 130-0003 Japan
(+81) 3-3624-5351
The data recommendations presented are based on tests, which we consider reliable. Because Kester has no control over the conditions of use, we disclaim any responsibility connected with the
use of any of our products or the information presented. We advise that all chemical products be used only by or under the direction of technically qualified personnel who are aware of the poten-
tial hazards involved and the necessity for reasonable care in their handling. The technical information contained herein is consistent with the properties of this material but should not be used in
the preparation of specifications as it is intended for reference only. For assistance in preparing specifications, please contact your local Kester office for details.
HM531
Rev: 21Jan10
Documentation Provided By HMC Electronics
33 Springdale Ave. Canton, MA 02021
(800) 482-4440