C40 Heat Sink System For TO-247, TO-264 and SOT-227 Packages Single Mounting The C40 Series Heat Sink System (Patent Pending) offers flexible, high performance and compact heat sinks with an exchangeable cam clip system for TO- 247, 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. Paired Heat Sink Mounting With a FAN SerieS SPeCiFiCatiONS Heatsink Surface Area Weight Length L 2 2 consult factory for Part Number (in / mm ) (oz / g) (mm) alternate lengths and clip combinations C40-058-VE 63.8 / 41,180 2.5/ 71 58 C40-058-AE CHaraCteriStiCS Aluminum Alloy 6063-T5 or Equivalent with either degreased or black Heat Sink Heat Dissipation anodized finish. 3 Spring Clip Music Wire, Per ASTM A228 with bright nickel plating 2.5 Solder Foot Cold-rolled Steel, Per ASTM A-366 with pure tin over copper strike. 4 devices RoHS compliant. 2 Fan 40mm fan with 4 self-tapping M3 screws 1.5 For improvement, use thermal joint compound, 0.005 Grafoil (TGon Interface Thermal 2 devices 800 by Laird), or phase change material (Hi-Flow by Bergquist) Resistance 1 Insulator (Optional) Sil-Pad 900-S, K6 800-S and K10 by Bergquist 0.5 0 0 10 20 30 Fan Flow Rate (cfm) (continued) 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com 169 Thermal Resistance from Case to Ambient per Device (C/watts)C40 Heat Sink System For TO-247, TO-264 and SOT-227 Packages dimeNSiONS Single Mounting Back-to-back Configuration (This configuration can accept a 40x40mm fan) 1.26 (32mm) 1.26 L 0.47 (32.0mm) (12mm) 1.82 1.82 1.72 (46.3mm) (46.3mm) (43.8mm) 1.18 1.18 (29.9mm) (29.9mm) 2x 0.08 L 0.16 1.37 0.10 0.79 2x 0.10 (2.0mm) (0.16mm) (34.7mm) (2.5mm) (20mm) (2.5mm) 0.10 (2.6mm) 2.52 Clip Dimensions (64.0mm) 0.43 W +0.12 6x (11mm) (+3.0mm) 0.07 pth 0.58 W (1.8mm) (14.6mm) 0.78 (19.8mm) 1.39 REF (35.3mm) L L LAND LAND L 0.16 L 0.16 PATTERN PATTERN Y Y (0.16mm) (0.16mm) X X T247 0.63 (16.1mm) T264 0.80 (20.2mm) 2x 0.08 2x 0.18 2x 0.08 2x 0.18 4x 0.11 pth (2.0mm) 0.11 pth (4.06mm) (2.0mm) (4.06mm) (2.8mm) (2.8mm) NOTE: Due to possible screw torquing on long extrusions, Customer should check for coplanarity prior to final assembly or soldering. HOw tO Order Heatsink Clip C40-058-AE CLA-T247-21E RoHS compliant Length Finish Device type Standard RoHS Series Clip series (mm) T247 = TO-247 compliant A = black anodized configuration T264 = TO-264 V = degreased S227 = SOT-227 (in development) 170 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com