HYDREX * WS Cleaner For Stencil/Misprint Cleaning and Defluxing

Transcription

1 HYDREX * WS Cleaner For Stencil/Misprint Cleaning and Defluxing Description HYDREX WS Cleaner is a blend of solvents and de-ionized (DI) water formulated to offer safe, non-flammable cleaning in aqueous or solvent cleaning equipment. It works effectively for removing uncured surface mount device (SMD) adhesives and raw solder pastes from stencils and misprinted assemblies, as well as reflowed rosin, no-clean and water soluble flux residues from circuit assemblies. Typical Properties Table 1. Appearance (Concentrate) Clear, water-white Flash Point (Pensky-Martens Closed Cup, PMCC) None ph 7.0 Freeze/Thaw Stability Stable Specific 25 C C Approx. 1 cps (in use) Vapor 20 C >1 mm Hg (estimated) Odor Mild Environmental Properties and Regulatory Status Table 2. Ozone Depletion Potential (ODP) Global Warming Potential (GWP) Significant New Alternatives Program (SNAP) Hazardous Air Pollutants (HAP) National Emission Standards for Hazardous Air Pollutants (NESHAP) Superfund Amendments and Reauthorization Act (SARA) Resource Conservation and Recovery Act (RCRA) Zero Zero Approved No * HYDREX is a registered trademark of Petroferm Inc. Page 1 of 5

2 Stencil/Misprint Cleaning Applications HYDREX WS is designed to remove uncured SMD adhesives and rosin, water-soluble, and no-clean solder pastes from stencils and misprinted SMD assemblies. It also removes new epoxy solder pastes such as Alpha AP Partial list of pastes and SMD adhesives cleaned by HYDREX WS (unheated) Solder Pastes (Unreflowed) Solder Pastes SMD Adhesives Alpha AP 4000 AIM NC291AX Amicon D-125F-DR3 Alpha LR721 Heraeus lead-free Amicon D-125F-5 F369Cu0.5-89H3 Alpha LR735 Indium SMQ90 Ciba Epibond 7275 (Red and Yellow) Alpha RMA376EH Indium SMQ92 Ciba Epibond 7285 Alpha RMA390D3K Kester R244L Heraeus PD955PR Alpha RMA390DH4 Kester 256NC Heraeus PD955PY Alpha UP78 Kester R229D Loctite 348 Alpha WS 609 Kester R598OA Loctite Chipbonder 3607 Alpha WS 619 Loctite Chipbonder 3609 Indium SMQ92J Loctite Chipbonder 3611 Loctite Chipbonder 3612 Loctite Chipbonder 3616 Process HYDREX WS is fully compatible with aqueous or solvent spray and ultrasonic stencil cleaning equipment. The product is effective when used unheated or heated. Rinsing can be done with DI water or with HYDREX WS. After rinsing stencils or assemblies, surfaces should be allowed to air dry or be blown dry with forced air. The HYDREX WS cleaning bath life is extended significantly when it is filtered through a 5 or 10 micron filter. Typical HYDREX WS Stencil Cleaning Process Steps Steps 1. Wash stencils or misprinted assemblies in concentrated HYDREX WS. 2. Rinse the residual HYDREX WS and dissolved residues from surfaces. 3. Dry surfaces as necessary. Process Details HYDREX WS works effectively unheated, but the cleaning bath can be heated to 100 F-125 F (43 C-52 C) to decrease cleaning time. Typical cleaning times (unheated) are from 3 to 5 minutes. HYDREX WS rinses easily with slightly heated or room temperature water, or with clean HYDREX WS. Typical rinse times are 1 minute to 1.5 minutes To remove the residual rinse water, use any appropriate method: desiccated forced air, oven, fan, centrifugal force, hand wipe, or other. Page 2 of 5

3 Post-Solder Defluxing Applications HYDREX WS can be used to remove water-soluble flux and paste residues as well as rosin and many no-clean flux and paste residues after wave solder or reflow. Partial list of reflowed solder pastes cleaned by HYDREX WS: AIM NC291 Alpha WS 609 Alpha AP 4000 Alpha WS 619 Alpha LR721 Heraeus F369Cu0.5-89H3 Alpha LR735 Indium SMQ92 Alpha RMA390DH4 Kester R244L Alpha UP78 Kester 256NC Process HYDREX WS is fully compatible with aqueous or solvent spray and ultrasonic cleaning equipment. The product is effective when used heated or unheated. Follow washing by rinsing with DI water or with HYDREX WS. After rinsing assemblies, surfaces should be allowed to air dry or be blown dry with forced air. The HYDREX WS cleaning bath life is extended significantly when it is filtered through a 5 or 10 micron filter. Typical HYDREX WS Defluxing Process Steps Steps 1. Wash circuit assemblies in concentrated HYDREX WS. 2. Rinse the residual HYDREX WS and dissolved residues from surfaces. Process Details HYDREX WS works well unheated, but the wash bath temperature can be heated to F (46-71 C), depending upon the particular residue to be removed. Typical cleaning times are from 3 to 7 minutes. HYDREX WS rinses easily with slightly heated or room temperature water, or with clean HYDREX WS. Typical rinse times are 1 minute to 1.5 minutes 3. Dry surfaces. To remove the residual rinse water, use any appropriate method: desiccated forced air, oven, fan, centrifugal force, hand wipe, or other. Page 3 of 5

4 Compatibility Stencils At operating temperatures below 130 F (54 C), HYDREX WS is compatible with stencil materials of construction, including adhesives and emulsions. Always keep operating temperatures below 130 F (54 C) when cleaning stencils. Studies show that stencil materials of construction are much more susceptible to attack at temperatures above 130 F (54 C), regardless of cleaning product. Circuit Assemblies - HYDREX WS is compatible with PWB materials of construction such as epoxies, flex laminates, and other cross-linked polymers. It does not affect cured solder mask. It will attack OSPs (organic solderability preservatives) Equipment HYDREX WS is compatible with metals, plastics and elastomers that are compatible with organic solvents. Safety and Toxicity Wash Bath and Rinse Water Disposal Packaging Shipping Please see Material Safety Data Sheet for detailed information. For internal disposal, used HYDREX WS can be evaporated in commercially available evaporator equipment. For external disposal, contact your current or local environmental service company for wastewater disposal options. While HYDREX WS is considered nonhazardous, materials cleaned such as solder pastes, which contain heavy metals, may make HYDREX WS wash baths hazardous. HYDREX WS is available worldwide in 5-gallon and 55-gallon containers. For samples, contact your Petroferm sales representative. This product is classified as non-hazardous. No special packaging is required to ship by air domestically or internationally. Handling Petroferm recommends that operators always use protective safety glasses and gloves when handling process chemicals such as HYDREX WS. Gloves made of nitrile or Buna N are recommended. Storage HYDREX WS is considered to be non-flammable and non-combustible by the (US) National Fire Protection Agency and therefore its storage is not regulated. The product should be stored in the original container, preferably in a ventilated, fire-resistant building. Page 4 of 5

5 Shelf Life The shelf life for this product is indefinite when it is stored in its original, sealed container at room temperature. However, the product should be inspected after the designated date on the product label (twenty-four months from the date of manufacture) prior to customer use. Petroferm Inc Lynndale Road Fernandina Beach, Florida USA Telephone: Facsimile: Revised: November Petroferm products are available worldwide. Technical information contained herein is believed to be accurate. However, it is furnished without charge or obligation and is given and accepted at recipient s sole risk. No guarantee of the accuracy of the information is made and the products discussed are sold without conditions or warranties expressed or implied. Purchasers should make their own tests and determine suitability of the product for their particular purposes. Nothing contained herein shall be considered a recommendation for any use that may infringe upon patent rights. Page 5 of 5