C40 Heat Sink System For TO-247, TO-264 and SOT-227 Packages The C40 Series Heat Sink System (Patent Pending) offers flexible, high performance and compact heat sinks with an exchangeable cam clip system for TO247, TO-264 and SOT-227 (clip in development) devices. This powerful heat sink can be thru-hole soldered in single or paired configurations. The paired unit has mounting holes to accomodate a 40mm x 40mm fan. It is the ideal type of heat sink for high power density and small size (1U or 2U) electronic packaging with forced convection. Single Mounting Paired Heat Sink Mounting With a FAN S ERIE S S P E C I F I C ATI O N S Heatsink Surface Area Weight Part Number (in2 / mm2) (oz / g) C40-058-VE 63.8 / 41,180 2.5/ 71 C40-058-AE Length L (mm) consult factory for alternate lengths and clip combinations 58 ch a r a c t e r i s t i cs Aluminum Alloy 6063-T5 or Equivalent with either degreased or black anodized finish. Spring Clip Music Wire, Per ASTM A228 with bright nickel plating Solder Foot Cold-rolled Steel, Per ASTM A-366 with pure tin over copper strike. RoHS compliant. Fan 40mm fan with 4 self-tapping M3 screws Interface Thermal For improvement, use thermal joint compound, 0.005 Grafoil (TGon Resistance 800 by Laird), or phase change material (Hi-Flow by Bergquist) Insulator (Optional) Sil-Pad 900-S, K6 800-S and K10 by Bergquist Heat Dissipation 3 Thermal Resistance from Case to Ambient per Device (°C/watts) Heat Sink 2.5 4 devices 2 1.5 2 devices 1 0.5 0 0 10 20 Fan Flow Rate (cfm) 30 (continued) 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 169 C40 Heat Sink System For TO-247, TO-264 and SOT-227 Packages d i m e ns i ons Single Mounting L 1.26" (32.0mm) 0.47" (12mm) 1.82" (46.3mm) 1.18" (29.9mm) 1.72" (43.8mm) 2x 0.08" (2.0mm) Back-to-back Configuration (This configuration can accept a 40x40mm fan) 1.26" (32mm) L – 0.16" (0.16mm) 0.10" (2.5mm) 1.82" (46.3mm) 1.18" (29.9mm) 0.79" (20mm) 1.37" (34.7mm) 0.10" (2.6mm) 2.52" (64.0mm) Clip Dimensions 0.43" (11mm) 0.78" (19.8mm) W +0.12" (+3.0mm) W 1.39" REF (35.3mm) 6x ø 0.07" pth (1.8mm) L L – 0.16" (0.16mm) 0.58" (14.6mm) L LAND PATTERN Y LAND PATTERN L – 0.16" (0.16mm) X "W" T247 0.63" (16.1mm) T264 0.80" (20.2mm) 2x 0.08" (2.0mm) 2x ø 2x 0.08" 0.18" (2.0mm) 0.11" pth (4.06mm) (2.8mm) 2x 0.18" (4.06mm) 4x ø 0.11" pth (2.8mm) ho w t o o r d e r Heatsink Clip C40-058-AE 170 Length (mm) RoHS compliant Finish A = black anodized V = degreased CLA-T247-21E Clip series Y X NOTE: Due to possible screw torquing on long extrusions, Customer should check for coplanarity prior to final assembly or soldering. Series 2x 0.10" (2.5mm) Standard Device type RoHS T247 = TO-247 configuration compliant T264 = TO-264 S227 = SOT-227 (in development) 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected]