25 heat sinks and standoffs heat sinks and standoffs dielectric laboratories part number single layer aluminum nitride for use as standoffs or heatsinks. s 30 ag 250 k y 1234 product code width code material code thickness code drawing reference code surface finish code thickness tolerance code part number applications applications o laser diode mounts o hpa mmic submounts o standoffs benefits benefits o high thermal conductivity o low capacitance o available with ausn for solder die attach o 4.6 ppm/c coefficient of thermal expansion provides stable match for gaas and si die h eat s inks a nd s tandoffs h eat s inks a nd s tandoffs
heat sinks and standoffs heat sinks and standoffs dielectric laboratories s 30 ag 250 k y 1234 part number part number 2777 route 20 east cazenovia, new york 13035 phone: 315.655.8710 fax: 315.655.8179 http://www.dilabs.com h eat s inks a nd s tandoffs h eat s inks a nd s tandoffs outline drawing outline drawing typical applications typical applications packaging packaging metalization options metalization options t l w standard tolerance l & w .002'' pkg floor pkg floor photo-diode led or laser diode wire bonds for signal & bias { aluminum nitride heat sink metalized 6 sides (i. e. dc short) standoff (metalization top & bottom only i. e. dc isolated) characteristics material aluminum nitride: >97% purity thermal conductivity: 170 w/mk coefficient of thermal expansion: 4.6 ppm/? dielectric constant: 8.85 dissipation factor: .0005 max @ 1ghz (unmetalized) insulation resistance: 10 6 megohms minimum 25? thickness code: thickness in thousandths of an inch. 250 = .025" thickness tolerance codes k= 10% as fired .002 machined surface finish codes x = as fired y = machined characteristics m= 300? tiw, 100 m " au (min) t= 300? tiw, 50 m " au a side, 300? tiw, 50 m " niv, 300 m ", ausn b side e= 300? tiw, 50 m " au both sides. patterned tiw/niv/ausn (300 m " min) per customer specifications. 4mil minimum exposure of underlying tiw au to ensure bondability. n= 300? tiw, 50 m " niv 1 /100 m " au standard: waffle packs. custom packaging available. call with requirements. 26
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