BOARD LEVEL POWER SEMICONDUCTOR HEAT SINKS 260 SERIES Cup Clips for TO-5 Case Style Semiconductors Characteristics TO-5 Thermal Resistance – Epoxy Insulated Breakdown Voltage – Epoxy Type (VAC), 60 Hz Recommended Operating Voltage, AC or DC Clean Conditions: % Hipot Rating Dusty Conditions: % Hipot Rating Dirty Conditions: % Hipot Rating Temperature Range — Continuous (C°) 14° C/W 500 50 30 10 to 20 -73/+149 TO-5 Model Depth of Tapped Base 260-4T5E 260-4TH5E 0.093 (2.36) 0.125 (3.18) Thread Size: Mounting Style: 4 6 T S P = = = = = #4-40 UNC #6-32 UNC tapped stud plain Base Style: H = hex Semiconductor Case Style: 5 = TO-5 Insulation E = epoxy TO-5 CASE STYLE CUP CLIPS — ORDERING GUIDE Standard P/N 260-4T5E 260-4TH5E 260-6SH5E Insulation Type Outline Dimension L x W x I.D. in. (mm) Weight lbs. (grams) Case Style Epoxy Insulated Epoxy Insulated Epoxy Insulated 0.370 (9.4) x 0.380 (9.7) dia. x 0.290 (7.4) 0.400 (10.2) x 0.370 (9.4) hex. x 0.290 (7.4) 0.557 (14.1) x 0.370 (9.4) hex. x 0.290 (7.4) 0.0024 (1.09) 0.0031 (1.41) 0.0037 (1.68) TO-5 TO-5 TO-5 Materials and Finish: Cups – beryllium copper, black ebonol “C”; Bases – brass, black ebonol “C” Base Mounting Configurations — TO-5 Plain Type — Epoxy bonded, or used with #4 pan head screws. Tapped Base — #4-40 UNC screw (not supplied) fits tapped hole. Care should be taken not to use too long a screw, which could short against the semiconductor case. For correct screw lengths: Correct Screw Length (L) = Depth of Base + Panel Thickness + Washer Thickness To determine the correct mounting screw lengths, add dimensions as follows: Stud Mounting Base. #6-32 UNC. Nuts and washers not supplied. Stud hole must be slightly countersunk to ensure flat mounting. Correct Screw Length (L) = Depth of Base + Panel Thickness + Washer Thickness Epoxy Insulated For TO-5 260-4T5E 2 [email protected] 260-4TH5E 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 260-6SH5E