Product Data Sheet
Product RA10
June 2003
RA SOLDER CREAMS RECOMMENDED OPERATING CONDITIONS
Reflow: It is not possible to specify ideal conditions for reflow
since they depend more on the design of the boards and the
capability of the reflow equipment. RA10 has been successfully
reflowed with a wide range of temperature profiles. It may be
reflowed in an air atmosphere. The following shows examples of
profiles used successfully in practice.
Multicore RA10 has been formulated as an active product
for printing and reflow in air. RA10 solder creams offer
good open time, high soldering activity and good printing
quality.
High activity to deal with poor component solderability
Suitable for printing and dispensing applications.
Good slump resistance
Good tack performance and printer open time
PRODUCT RANGE
Multicore RA10 solder creams may be supplied with powder
made from most solder alloys in the Multicore Product Range.
The most common alloys used are Sn60, Sn62 and Sn63
conforming to the purity requirements of JSTD-006 and EN
29453. Minimum order requirements may apply to certain alloys
and powder particle sizes. Cleaning: The residues from Multicore RA10 solder creams
may be left on the PCB in some applications where they do not
pose a hazard to long-term reliability. They may be removed in
conventional cleaning processes based on solvents such as
Multicore Prozone. If enhanced residue reliability is required
without cleaning with conformance to the IPC Type L
specification, the user should evaluate Fastprint MP200 solder
creams.
Multicore RA10 contains an RA type of activator and will be
suitable to meet the demands of high volume production
processes using components and boards, which have less than
the desirable level of solderability.
RA10 may be used as a No Clean Solder Cream for many
consumer electronics assembly processes.
TECHNICAL SPECIFICATION
Metal Content, % in RA10 Solder Creams
For Particular Applications
Solder Powder Particle Size
Size 53-38µm 45-20µm 38-25µm
Application
(Viscosity) Multicore
Code
AAS
AGS
DAS
Dispensing
(500,000cP)
86
(500,000)
-
-
Screen Printing
(650,000cP)
88
(650,000)
-
-
Stencil Printing
(820,000
900,000cP)
90
(820,000)
90
(850,000)
90
(900,000)
Solder Powder: The solder powder for Multicore RA10 solder
creams is produced by atomising alloys conforming to the purity
requirements of JSTD-006, EN 29453 or other national and
international standards where relevant.
Careful control of production processes ensures that the solder
powder is at least 97% spherical and contains less than the
minimum level of contaminants that would adversely affect
solder cream performance. A typical maximum oxide
contamination level of 80ppm (expressed as oxygen in the
solder) is regularly achieved or bettered.
NOT FOR PRODUCT SPECIFICATIONS.
THE TECHNICAL INFORMATION CONTAINED HEREIN IS INTENDED AS REFERENCE ONLY. PLEASE CONTACT LOCTITE
CORPORATION QUALITY DEPARTMENT FOR ASSISTANCE AND RECOMMENDATIONS ON SPECIFICATIONS FOR THIS.
RA10, June 2003
Solder Cream Medium: Multicore RA10 contains a stable resin
system and a blend of solvents.
Fumes, Vapours and Precautions: The flux fumes given off at
soldering temperatures are irritating to the nose, throat and
respiratory organs. Prolonged or repeated exposure to the fumes
may cause sensitisation.
The flux has been formulated to meet the requirements of IPC
type MR3CN specification or the MIL-F 14256 RA classification.
These materials should always be used in a well ventilated area
and suitable fume extraction should be used to extract flux fumes
away from the operators.
Solder Cream: The properties of a solder cream depend in part
on the metal content, the solder alloy and the solder powder
particle size range. In general terms, increasing metal content
reduced the tendency to slump and reduces the tackiness of the
solder cream while the solder balling performance improves.
Protection and Hygiene: Suitable protective clothing should be
worn to prevent materials from coming into contact with the skin
and eyes. If the materials come into contact with the skin, the
affected area should be cleaned with a proprietary hand cleanser
followed by washing with soap and water. If the materials come
into contact with the eyes, they should be irrigated thoroughly
with running water for at least 10 minutes and medical attention
sought.
PACKAGING
Containers: Multicore RA10 solder creams are supplied in:
• 1 kg, 500g or 250g plastic jars with an insert to seal off the
surface of the cream
Eating, drinking or smoking should not be permitted in the
working area and hands should be washed thoroughly with soap
and warm water before eating.
• 1kg vacuum filled cartridges for direct application
Other forms of packaging may be available on request.
Shelf Life: Providing Multicore RA10 solder creams are stored
at 5-10°C tightly sealed in the original container, a minimum
shelf life of 6 months can be expected.
Fire Hazards and Precautions: The flashpoint of the solvent
used in these materials is high (118°C) but it is combustible.
Carbon dioxide, foam or dry powder extinguishers are suitable.
High temperatures may produce heavy metal dust, fumes and/or
vapours. Do not use water where molten metal is present.
Multicore RA10 solder creams have been formulated to reduce
separation on storage to a minimum but should it occur, gentle
stirring will return the products to their correct rheological
performance.
Spillage and Waste Disposal: Spills of the materials should be
scraped up and the contaminated area washed with water.
Waste materials should be stored in closed containers and
disposed of in accordance with the relevant local and national
regulations.
HEALTH AND SAFETY
WARNING: The following information is for guidance only and
users must refer to the Material Safety Data Sheet relevant to
Multicore RA10 solder paste product before use.
Note
The data contained herein are furnished for information only and are
believed to be reliable. We cannot assume responsibility for the results
obtained by others over whose methods we have no control. It is the
user's responsibility to determine suitability for the user's purpose of any
production methods mentioned herein and to adopt such precautions as
may be advisable for the protection of property and of persons against
any hazards that may be involved in the handling and use thereof. In
light of the foregoing, Loctite Corporation specifically disclaims all
warranties expressed or implied, including warranties of
merchantability or fitness for a particular purpose, arising from
sale or use of Loctite Corporation’s products. Loctite Corporation
specifically disclaims any liability for consequential or incidental
damages of any kind, including lost profits. The discussion herein of
various processes or compositions is not to be interpreted as
representation that they are free from domination of patents owned by
others or as a license under any Loctite Corporation patents that may
cover such processes or compositions. We recommend that each
prospective user test his proposed application before repetitive use,
using this data as a guide. This product may be covered by one or
more United States or foreign patents or patent applications.
Loctite Electronics
Henkel Loctite UK Ltd, Watchmead, Welwyn Garden City, Hertfordshire, AL7 1JB, England
UK.: 01707 358800
Loctite is a Trademark of Henkel Loctite Corp. U.S.A www.loctite.com
MSL705
