CP Series Cold Plate Four-pass Heatsink FeatureS The Ohmite CP4 series Liquid Coldplates are Designed for Ohmite products, Pre drilled hole pat- designed for Ohmite heatsinkable type resistors, terns for standard Ohmite planar resistors TAP600/ such as TAP600, TAP800, TA1K0, TA2K0, and vari- TAP800 and TAP1K0/TAP2K0. ous SOT-227 resistor packages. The CP series also provides maximum heat removal for SCRs, rectifiers, Design flexibility, Chill Plate lengths can be config- diodes, thyristors, and other high-power semicon- ured as well as mounting hole patterns to accept a ductor devices. The CP series is customizable to fit multitude of devices. multiple applications. Length and mounting hole pat- Thermally efficient copper mounting sur face for the terns can be specified. most efficient heat transfer. SerieS SPeCiFiCatiONS Mounting Surface Weight Ohmite Resistor Thermal 2 2 Part Number Area (in /mm ) (oz/g) Series Resistance* (C/W) CP4-114A 19.13/12339 28.4/805 0.018 CP4-114B 19.13/12339 28.4/805 TAP600/TAP800 0.018 CP4-114C 19.13/12339 28.4/805 TAP1K0/TAP2K0 0.018 * flow of 1.5 GPM CharaCteriStiCS Copper, 0.375 OD, nominal wall thickness of 0.050 Tubing Plate Aluminum 6063-T5 Weight 805 g 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com 2 CP Series Cold Plate Four-pass Heatsink heat DiSSiP atiON a TAP2K0 was used in testing. 0.035 6 0.03 5 0.025 4 0.02 3 0.015 2 0.01 1 0.005 0 0 0 0.5 1 1.5 2 2.5 Water Flow Rate (gpm) DimeNSiONS CP4A-114A-108E CP4A-114B-108E CP4A-114C-108E 8-32 UNC 3/8 8-32 UNC tapped (2mm) tapped 3.0 REF. thru-hole 4x .265 thru-hole (76.2mm) (4 places) (6.73mm) (2 places) 4x .265 4x .265 (6.73mm) (6.73mm) 2.000 .032 2.000 .032 2.000 .032 4.500 REF. (50.8mm) (50.8mm) (50.8mm) (114.3mm) 2.24 (56.9mm) 1.0 REF. 3.70 C (25.4mm) C C L L L (95.0mm) 5.450 .032 3.70 (138.4mm) (94.0mm) 4.250 REF. 5.450 .032 (108mm) (138.4mm) 6.0 REF. 0.750 REF. (152.4mm) (19.1mm) hOw tO OrDer Four Pass CP4A-114A-108E Cold Length Hole Pattern Width RoHS Plate (mm) A = no holes (mm) Compliant B = TAP600/800 C = TA1K0/TA2K0 (assigned sequentially for custom patterns) 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com 3 Overall Thermal Resistance, Mtg. Surface to Inlet Water (C/w) Pressure Drop (psi)