High-power LED solid crystal paste description I. alloy HX-1000 series (SAC305X, SAC305) Second, product characteristics 1. High thermal conductivity, electrical conductivity, SAC305X and SAC305 alloy thermal conductivity of 54W / M · K or so. 2. The bond strength is much greater than silver plastic, long working hours. 3. thixotropic good, with the desired solid crystal and dispensing appropriate viscosity, good dispersion. 4. very little residue, the solid crystal LED base placed after 40 ℃ incubator for 240 hours, the residue and base metal does not change color, and does not affect the LED's glow. 5. Paste uses ultrafine diameter, can effectively meet the 25-75 mil range of high-power chip welding, the larger the size of the wafer crystalline solid operating more easily achieved. 6. reflux eutectic solidification or curing box-type thermostat, walk reflow soldering curve, more conducive to the formation of chip bonding. 7. The solid crystal paste cost far less than the silver plastic and Au80Sn20 alloys and solid crystal process to save energy. Third, the product material and performance 1. uncured Performance Project Index Notes main ingredient ultrafine tin powder, flux viscosity (25 ℃) 10000cps Brookfield @ 10rpm 18-50pa.s MALCOM @ 10rpm proportion of 4 thixotropic index of 4.0 3rpm pycnometer Performance melting point (℃) 217 ??SAC305 217 SAC305X thermal expansion coefficient 2-10 ℃ 2. cured when the viscosity of the shelf life of three months 30ppm / ℃ thermal conductivity of 55-59 W / M · K resistivity of 13 25 ℃ / Μω · cm cut Chela extensor strength of 27N / mm2 20 ℃ 17 N / mm2 100 ℃ Tensile Strength 35-49 Mpa ion content Cl- <50ppm JIS Z3197 (1999) ATM-0007 Br- <50ppm Na + <30ppm K + 400 ℃ explosion hazard: the product and there is no danger of explosion. Density at 20 ℃: 3.5-4.0 g / cm 3 the solubility / miscibility with water: not dissolved or difficult to dissolve. Tenth paragraph: Security and reactivity Thermal decomposition / conditions to be avoided: If you follow the specifications of use does not decompose. Materials to avoid: strong acids, strong oxidants. Dangerous reactions: No dangerous reactions known. Hazardous decomposition products: When heated to welding temperature, the solvent was evaporated and rosin thermal degradation, can liberate aliphatic aldehydes and acids. Tenth paragraph: Toxicological information Acute toxicity: Primary irritant effect: on the skin: May through contact or smoke irritation. On the eye: Welding fumes can cause eye irritation. By inhalation: Flux welding fumes may cause allergies and mucous membranes and respiratory system damage. By ingestion: Harmful if swallowed. Sensitization: May cause sensitization by skin contact. The product also has the following hazards: irritation. Section XII: ECOLOGICAL INFORMATION General Description: Do not let the product to reach ground water, water course or sewage system. Section 13: exhaust gas treatment methods Product: This product can not be together with household waste. Do not allow product to reach sewage system. Disposal must be made according to official regulations. Uncleaned packaging: Disposal must be made according to official regulations. On paragraph 14: Transport Rule DOT regulations: Hazard class: - not specified. Land transport ADR / RID (cross-border): ADR / RID Level: - not specified. Maritime IMDG: IMDG level: - not specified. Water pollutant: Air transport ICAO with TI and IATA - DGR: ICAO / IATA Level: - not specified. Paragraph 15: The following information management regulations and product regulation specific to the United States: SARA (Toxic Material Amendments and Reauthorization Act). Section 355 (extremely hazardous substances): The ingredients are not listed. Section 313 (specific toxic chemical substances): 7440-22-4 Silver 7440-50-8 copper Workplace Hazardous Materials Identification (Hazardous Materials Information System): This product has been classified as dangerous according to Canadian Standards Regulation control products ( CPR) CPR all the information and data contained in the required table. WHMIS Classification: Facts Hazardous Materials Information System D2B components: rosin, polymerized, tin, silver. Paragraph 16: Additional information contained herein is based on data believed to be accurate, is to provide information only consideration and investigation, 华茂翔 does not make any guarantee, does not make any representations and assumptions; the data for this material safety data sheet only involving this product, do not involve the use of any other material or in any process. Production Company: Shenzhen Huamao Xiang Electronics Limited. Address: Bao'an District of Shenzhen City Xixiang street Gushu new home communities, 2-3, 11th Floor, Park Village