M Series Heatsinks Heatsink with two clips for TO-264 and TO-247 1.34" (34.1mm) 1.52" (38.6mm) Features Ohmite introduces the M series, patented (Pat. No. 7,151,669), high performance, low cost, configurable, scalable and compact heat sink with matrix clip system for TO-247 and TO-264 packages. This powerful heat sink provides the easiest assembly, largest surface area and smallest footprint. It is the ideal type of heat sink for high power density and small size (1U or 2U) electronic packaging with forced convection cooling. • Minimum assembly cost and labor. Spring Clips make the mounting holes and fasteners obsolete in assembly operations & reduce costs. • Maximum Thermal Transfer. Maximum surface area per unit volume, efficient cooling fins & consistent mounting force reduces thermal resistance • Maximum Repeatability. Constant spring force over repeated assembly/disassembly • Maximum Reliability. Resilient spring action locks electronic component in place. Fewer parts in assembly and no fasteners and washers required. Prevent short circuit by eliminating metal particles generated from hardware or thread tapping • Design Flexibility. Maximum flexibility for dynamic device locations and power up grading. “Configure-to-Fit” & “Scale-toMeet” options give designers the total freedom to configure the heat sink to fit their packaging designs and to scale the heat sink to meet their power dissipations. specifications 0.14" (3.6mm) Thermal Resistance (°c/w)* 2.0 2.0 Weight (oz./g) 2.2 / 63 2.2 / 63 * Forced convection @200 LFM L a n d P a tt e r n ø 0.07" (1.8mm) CL Heat Dissipation (L = 1.8 in) user defined values CL Y X 4x ø 0.10" (2.5mm) 0.95" (24.1mm) 1.35" (34.3mm) Air Velocity (ft./min.) 50 200 400 600 800 1000 45 4 40 3 35 2 30 1 25 0.08" (2.0mm) 2x 0.18" (4.6mm) 2.01" (51mm) 2.17" (55mm) S T A N D A R D p art n u m b e rs F O R M S E R I E S 0 20 4 12 8 16 Heat Dissipated (watts) Degreased Black anodized Bulk Bulk 20 ord e rin g infor m ation Part NumberDescriptionPackaging MV-102-55E MA-102-55E 5 Thermal Resistance from Mounting Surface to Ambient (°C/watts) Part No. MV-102-55E MA-102-55E Surface Area (in2/mm2) 45 / 29,097 45 / 29,097 Case Temp. Rise above Ambient (°C) 0.83" (21.1mm) 0.95" (24.1mm) Heat Sink: Aluminum Alloy 6063T5 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. Insulator: (Optional) Sil-Pad 900S, K6 800-S and K10 No. of clips RoHS Compliant MV-102-55E Series Finish A = black anodized V = degreased Length (mm) Check product availability using the Worldwide Inventory Search at ohmite.com Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 1