Technical Data Sheet LOCTITE MF R301 September -2014 PRODUCT DESCRIPTION An air pressure of about 5-7 psi is recommended and the nozzle should be about 25mm below the board and angled back at a few LOCTITE MF R301 provides the following product degrees, perpendicular to the plane of the board. This will ensure characteristics: effective removal of excess flux without transferring droplets to the top of the following board. Technology Liquid flux Appearance Pale rosin yellow Sufficient space should be allowed between the foam fluxer and the air knifeto prevent the air stream from disturbing the foam. Odor Alcoholic Solids Content 5.5-6.5% Observing the following instructions willhelpensure optimum foaming Cure Not applicable and soldering results. Application Soldering 1. Use Dry Air . LOCTITE MF R301 is a no clean, high activity liquid flux for 2. Keepthe flux tank FULL at alltimes . surfaces with poor solderability from the pioneers of no clean 3. The top of the foaming stone should be no more than 2cm below technology . Fast soldering on conventional leaded and SMD the surface of the liquid flux. A finefoaming stone is preferred components no bridges or icicles.Exceptional through- hole and ifnecessary, raise the level of the stone . penetration . Sustained performance for maximum process 4. The preferred width of the slot (opening) of the foam fluxer is window . No cleaning reduces costs . Minimal residues to 10mm. Ifitis wider and problems are encountered, add a strip of interfere with ATE probes without cleaning. Compatible with stainless steel or PVC across it to narrow the opening to 10mm. It is preferable to have a chimney for the foam which tapers rosin based surface preservatives . Foam, spray or wave towards the top. application. Typical applications for LOCTITE MF R301 is 5. DO NOT use hot fixtures or pallets as these cause the foam to recommended for consumer electronics and general electrical deteriorate and increase losses by evaporation . soldering applications.The activator package is similar to that 6. DO NOT use fixtures that have the potential to entrap flux . previously deployedinR32-07i, but the acidvalue has been increased to further enhance efficacy, especially when Preheating soldering to poorly preserved substrates/components .A small The optimum preheat temperature and time for a PCB depends on its amount of rosin is complemented by the solvent package to design and the thermal mass of the components but the cycle should ensure optimum drainage characteristics at the exit of the be sufficient to ensure that the flux coating is not visibly wet when it wave, minimising bridges, spikingand mid-padsolder balling. contacts the wave. This leaves a small amount of non-corrosive residue . This Conditions willvary from one machine to another but the following product can be appliedby any of the usual techniques: foam, settings were found to give good results on a number of systems: spray or wave . -1 Conveyor Speed ,m min 0.91, 1.22, 1.52 DIRECTIONS FOR USE Topside Preheat ,C 80 to 85, 85 to 90, 95 to 100 The Printed Circuit Board: It is advantageous to fit a topside canopy over the preheaters to LOCTITE MF R301 is recommended for use on copper or tin-lead produce more effective drying and activation. This willallow the use of coated PCBs . It will solder satisfactorily over most rosin- based faster conveyor speeds and improve soldering . preservatives .It is recommended that the rosin based preservative be appliedno longer than 3 months before soldering, since the periodof At a speed of 1.5m min-1, a contact length of 50-75mm between the protection is limiteddependent on storage conditions . LOCTITE MF wave and the PCB is recommended . At lower speeds, this contact R301 has been formulated to work over a wide range of solder resists . length should be reduced .Very slow speeds through the solder wave may produce dullsolder joint. Machine Preparation: When switching to LOCTITE MF R301 from any other flux, ensure all It is particularly useful when setting up a machine to measure the fingers, pallets and conveyors are thoroughly cleaned. It is preheat using the Multicore SoldaPro Temperature Profile System recommended that Multicore Prozone Solvent Cleaner is used in the (data sheet available) . finger cleaners . ITISIMPORTANT that flux solvent be removed by the preheat and Fluxing that the PCB ISNOT WET when itreaches the solder wave . LOCTITE MF R301 has been formulated for use in foam, spray or wave fluxers in the same way as ordinary fluxes on standard wave Solders soldering machines. LOCTITE MF R301 can be used with allsolder alloys . For foam fluxing, it is important to remove excess flux from the circuit The recommended maximum solder bath temperature is 260C .The boards using the standard air knife or brushes suppliedon the wave solder bath temperature can generally be reduced compared with soldering machine . processes using conventional fluxes .Temperatures as low as 235C TDS LOCTITE MF R301 , September -2014 may be used insome situations and this results inimproved soldering In case products are delivered by Henkel Belgium NV, Henkel Electronic Materials NV, Henkel Nederland BV, Henkel Technologies France SAS and and less wastage through drossing . Henkel France SA please additionally note the following: In case Henkel would be nevertheless held liable,on whatever legal ground, Dwell time on the wave should be 0.5-1.0seconds (chipwave) and Henkels liabilitywillinno event exceed the amount of the concerned delivery. 2.0-3.0seconds (laminar wave) . Conveyor speed for dual wave systems should be at least 1.2m min-1 . In case products are delivered by Henkel Colombiana, S.A.S.the following disclaimer is applicable: To complete your no-clean assembly, use the compatible Multicore The information provided in this Technical Data Sheet (TDS) including the Cored Solder Wire and Solder Cream . recommendations for use and applicationof the product are based on our knowledge and experience of the product as at the date of this TDS. Henkel is, Soldering iron tips should be kept clean with Multicore Tip therefore, not liablefor the suitability of our product for the production processes and conditions in respect of which you use them, as well as the intended Tinner/Cleaner TTC1 (data sheet available) . applicationsand results. We strongly recommend that you carry out your own prior trials to confirm such suitability of our product. Cleaning: Any liabilityinrespect of the information inthe Technical Data Sheet or any other written or oral recommendation(s) regarding the concerned product is excluded, Specialapplicationsmay have regulations insisting on board cleaning except ifotherwise explicitlyagreed and except in relation to death or personal and in such cases Multicore Prozone may be used . These are injury caused by our negligence and any liabilityunder any applicablemandatory economic cleaners which are free from CFC compounds and may be product liabilitylaw. used to remove any small accumulation of flux solids that might develop on parts of the soldering machine after prolonged use . In case products are delivered by Henkel Corporation, Resin Technology Group, Inc., or Henkel Canada Corporation, the following disclaimer is Machine contamination will,in any case, be much less than with applicable: The data contained herein are furnished for information only and are believedto conventional rosin fluxes . 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 Unlike water soluable fluxes, this product is not corrosive towards determine suitability for the user s purpose of any production methods mentioned PCB-handlingequipment . 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 inthe handling and use thereof. In light of the foregoing, Henkel Corporation specifically Surface Insulation Resistance disclaims all warranties expressed or implied, including warranties of merchantability or fitness for a particular purpose, arising from sale or use LOCTITE MF R301 passes the surface insulation resistance test of Henkel Corporations products. Henkel Corporation specifically requirements of J-STD-004 at 50V bias for 168h at 85C and 85% RH . disclaims any liability for consequential or incidental damages of any kind, including lost profits. The discussion herein of various processes or Electromigration compositions is not to be interpreted as representation that they are free from LOCTITE MF R301 passes the electromigration test requirements of domination of patents owned by others or as a license under any Henkel BellcoreGR-78-CORE at 10V bias for 500h at 65C and 85% RH . Corporation patents that may cover such processes or compositions. We recommend that each prospective user test his proposed applicationbefore GENERAL INFORMATION repetitive use, using this data as a guide.This product may be covered by one or For safe handling information on this product, consult the more United States or foreign patents or patent applications. Material Safety Data Sheet (MSDS). Trademark usage: Except as otherwise noted Alltrademarks inthis document are trademarks and/or registered trademarks of Henkel and its affiliates in the Not for Product Specifications U.S. and elsewhere. The technical information contained herein is intended for reference only. Please contact Henkel Technologies Technical Service for assistance and recommendations on specifications for this product. Reference 0.2 Conversions (C x 1.8)+ 32 =F kV/mm x 25.4 =V/mil mm /25.4 =inches m /25.4 =mil N x 0.225=lb N/mm x 5.71=lb/in N/mm x 145 =psi MPa x 145 =psi Nm x 8.851 = lbin Nm x 0.738=lbft Nmm x 0.142 =ozin mPas =cP Disclaimer Note: The information provided in this Technical Data Sheet (TDS) including the recommendations for use and applicationof the product are based on our knowledge and experience of the product as at the date of this TDS. The product can have a variety of different applicationsas well as differingapplicationand working conditions in your environment that are beyond our control. Henkel is, therefore, not liablefor the suitability of our product for the production processes and conditions in respect of which you use them, as well as the intended applicationsand results. We strongly recommend that you carry out your own prior trials to confirm such suitability of our product. Any liabilityinrespect of the information inthe Technical Data Sheet or any other written or oral recommendation(s) regarding the concerned product is excluded, except ifotherwise explicitlyagreed and except in relation to death or personal injury caused by our negligence and any liabilityunder any applicablemandatory product liabilitylaw. Americas Europe Asia +1.888.943.6535 +32.1457.5611 +86.21.2891.8000 For the most direct access to local sales and technical support visit: www.henkel.com/electronics