Solder resist Elpemer® AS 2467 SM-DG application by air spraying photoimageable aqueous-alkaline developable dark-green UL-approval: best flame class V-0 acc. to UL 94, UL File No. E80315 Please read this technical report and the publications listed below carefully before using the product. These sheets are enclosed with the first shipment of product or sample. The corresponding material safety data sheet contains detailed information and characteristics on safety precautions, environmental protection, transport, storage, handling and waste disposal. Technical Report “Solder resists of the series Elpemer® 2467“. Application information AI 2/1 “Processing instructions for photoimageable Elpemer® solder resists“ Technical information TI 15/3 “Protective measures when using chemicals including lacquers, casting compounds, thinners, cleaning agents“ LP 150901 D-0 / 0291800e.000 Characteristics Base novolak-epoxy-photopolymer Solids content, DIN EN ISO 3251 (1 h, 125 °C [257 °F], 1 g weighed quantity) 65 ± 2 % by weight Viscosity of mixture at 20°C [68 °F] ISO 2431 / 6 mm flow cup 80 ± 10 s Viscosity of mixture at 20 °C [68 °F] DIN 53211 / 4 mm flow cup* 120 ± 20 s Density at 20 °C [68 °F], ISO 2811-1 Component A Component B mixture Pot life of mixture (at room temperature; approx. 18–23 °C [64.4–73.4 °F]; avoid solar and light radiation, yellow light or yellow filters are mandatory) Residual halogen content JPCA-ES01-2003 / IEC 61249-2-21 1.42 0.05 g/cm³ 1.03 0.05 g/cm³ 1.34 0.05 g/cm³ at least 7 days halogen-free Indices: AS = air spray, SM = silk-mat, DG = dark green Process Data Sheet AS 2467 SM-DG Recommendation for standard processing of Elpemer® AS 2467 SM-DG Detailed recommendations on each process step can be found in our Application Information AI 2/1. Our Application Technology Department (ATD) will also be pleased to assist you regarding all process relevant queries. 1. 2. 3. 4. 5. Component A : Component B = 4 : 1 (parts by weight) Stirring time in case of mechanical stirring equipment min. 10–15 min, until a homogeneous mixture is achieved. Adjust with thinner V 2467 to the equipment specific processing viscosity. Pay attention to sufficient degassing. Create a clean, dry and grease-/oxide-free surface On account of the high number of various processes and equipment for spray application please contact our application technology department for exact process parameters. Depending upon type and procedure of the subsequent drying process. Convection dryer: 1st side approx. 25 min at 80 °C [176 °F] 2nd side 25–35 min at 80 °C [176 °F] IR dryer: approx. 2–3 min at 110–130°C [230–266 °F] Coating of 2nd side of printed circuit board 6. 5–10 kW, Fe-doped mercury vapour lamps, emission maximum 365 nm 150-250 mJ/cm² (measured through the artwork at a transparent point with ORC UV Model UV 350) Exposure with LED-DI (LEDIA by Dai Nippon Screen) 130-170 mJ/cm2 Stouffer step on copper 9–10 (free developed) for electroless Ni/Au (ENiG) / Sn (CSn) 11-12 (free developed) 7. Multiple cascade, 1 ± 0.1% solution of Na2CO3; developing time 70–90 s developing temperature 35–39 °C [95–102.2 °F], spraying pressure 2–4 bar [29–58 psi] 8. 9. 10. 11. 12. 13. Water (demineralised, triple cascade rinsing) Blow dry by means of air knives and hot air drying 1,500-2,000 mJ/cm2 Strippable if necessary in HP 5707 (see Item “Auxiliary Products recommended” of Technical Report) 60 min at 150 °C [302 °F] object holding time 2,000-3000 mJ/cm² * Total holding time in subsequent process steps max. 72 h at < 25°C [77 °F] 2 www.peters.de Process Data Sheet AS 2467 SM-DG Shelf life and storage conditions Shelf life: In sealed original containers at least 6 months +25°C Storage conditions: +5 °C to +25 °C [+41 °F to +77 °F] +5°C UV Protect open containers from UV light For warehousing reasons, isolated cases may occur where the shelf life upon shipment is less than the shelf life indicated in this technical report. However, it is ensured that our products have at least two-thirds of their shelf life remaining when they leave our company. Labels on containers show shelf life and storage conditions. Disclaimer All descriptions and images of our goods and products contained in our technical literature, catalogues, flyers, circular letters, advertisements, price lists, websites, data sheets and brochures, and in particular the information given in this literature are non-binding unless expressly stated otherwise in the Agreement. This shall also include the property rights of third parties if applicable. The products are exclusively intended for the applications indicated in the corresponding technical data sheets. The advisory service does not exempt you from performing your own assessments, in particular as regards their suitability for the applications intended. The application, use and processing of our products and of the products manufactured by you based on the advice given by our Application Technology Department are beyond our control and thus entirely your responsibility. The sale of our products is effected in accordance with our current terms of sale and delivery. Any questions? We would be pleased to offer you advice and assistance in solving your problems. Samples and technical literature are available upon request. Lackwerke Peters GmbH & Co. KG Hooghe Weg 13, 47906 Kempen, Germany www.peters.de Internet: www.peters.de E-Mail: [email protected] Phone +49 2152 2009-0 Fax +49 2152 2009-70 3