P
OWER S
URFACE M
OUNT P
ACKAGES Typical TO-Type With:Thermal Conductivity
INDUSTRIAL SEAL RING Glass to Metal Type Packagewith ASTM F-15 Alloy=14 W/mKCold Rolled Steel Base=42 W/mK Ceramic Surface MountDevice with Metalized VIAS=62 W/mKHCC AegisSurface Mount Package=185 W/mK W/Cu PADS CERAMIC Comparison of SMDpackage technology vs. TO-25X Series Power Packages
Package CharacteristicsSMD-.5SMD-1SMD-2TO-257TO-254TO-259 Overall size (mils).296 x .400.450 x .625.525 x .690.415 X .650.540 X .7951.190 X .535 Overall Height (mils).112.140 max.114 max.190.250.255 Die Mount Area (mils).170 x .206.340 x .340.405 x .405.290 x.290.396 x .396.530 x .394 Wire Size (diameter.mils).015 inch.020 inch.020 inch.015 inch.020 inch.020 inch Weight (grams) .889 gr. 2.55 gr.2.89 gr.4.35 gr.9.15 gr.10.84 gr. Heat Spreader Material(s)W/CuW/CuW/CuW/Cu/BeOW/Cu/BeOW/Cu/BeO SMD-.5, SMD-1 and SMD-2 are open-tooled, preferred industry standard outlines All dimensions in inches Notes:
Seal ring corner radii are .020 Materials include Seal Ring: ASTMF-15 Alloy Ceramic: Minimum 90% Aluminum oxide, BlackCeramic Metallization: Tungsten or Moly Manganese Bond Pads: 85% Tungsten, 15% CopperBraze: 72% Silver, 28% Copper Plating of Electrolytic Nickel and Gold is in accordance with MIL-PRF-19500 requirements SMDpackage technology meets the general package qualification requirements of Appendix E of MIL-PRF-19500 For custom designs, our Engineering staff will be happy to work with you from the initial design phase. We will make every attempt to use open-tooled components from other SMD designs. This approach attempts to keep the NRE costs to a minimum. 4232 Temple City Blvd.Rosemead, CA 91770 USA 626-443-8931? FAX 626-443-6610 www.hccindustries.comInternational - England49-53 Hazelwood Road Northampton, NN1 1LG UK +44 (0) 1604 233101 ? FAX +44 (0)1604 232907485 Oberlin Avenue, SouthLakewood, NJ 08701 (732) 370-9100 ? FAX (732) 370-7107 www.glasseal.com4232 Temple City Blvd.Rosemead, CA 91770 (626) 443-8931? FAX (626) 443-6610 www.hermeticseal.com9705 Reading RoadCincinnati, OH 45215 (513) 733-8400 ? FAX (513) 733-0131 www.sealtron.com 50 Welby Road New Bedford, MA 02745 (508) 998-3141 ? FAX (508) 995-7315 www.hccaegis.com www.hccindustries.com