E Series Heatsinks For TO-220 devices F e a t u r es •Vertical through-hole PCB mounting •0.142 in. diameter mounting holes (3) S E RI E S S P E CI F ICATI O N S For Ohmite Surface Heatsink Package Resistor Area Part Number Type Series (in2) Weight EV-T220-38E TO-220 TBH25, TCH35 11.5 0.63 oz/18g EA-T220-38E EV-T220-51E TO-220 TBH25, TCH35 15.2 0.85 oz/24g EA-T220-51E EV-T220-64E TO-220 TBH25, TCH35 18.8 1.06 oz/30g EA-T220-64E *Natural convection at 10W dissipation Thermal Resistance* (°C/W) 11.4 9.5 9.0 7.5 7.4 6.2 characteristics Interface for improvement, use thermal thermal joint compound or 0.005 resistance Grafoil (TGon 800 by Laird) Interface Sil-Pad 900S by Bergquist or electrical equivalent isolation 100 0 200 Air Velocity (ft./min.) 400 600 800 -E38 1000 10 -E38 8 80 -E51 -E51 6 60 -E64 -E64 40 4 2 20 Thermal Resistance from Mounting Surface to Ambient (°C/watts) Solder feet Tin plated brass Heat Dissipation Mounting Surf. Temp. Rise above Ambient (°C) Heat sink Aluminum 6063-T5 or equivalent with either black anodized or degreased finish 0 0 0 2 4 6 Heat Dissipated (watts) 8 10 (continued) 174 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] E Series Heatsinks For TO-220 devices d i m ens i ons (in./mm) 0.138" (3.50mm +.20/-.10) 1.00" (25.40mm) 0.437" (11.10mm ±.30) 0.055" (1.40mm) 0.689" (17.50mm ±.15) Part Number Height (in. ±.010 / mm ±.25) EV-T220-38E EA-T220-38E 1.5 / 38.10 EV-T220-64E EA-T220-64E 2.5 / 63.50 EV-T220-51E EA-T220-51E ø0.098" (2.50mm) ø0.142" (3.60mm +.10/-0) NOTICE: Dimensional change. Dimensions shown are for products produced after July 2013 Height H Land Pattern 0.500" (12.70mm) 0.031" (0.79mm) ø 0.105" (2.67mm) Device Center Line o r d e r i n g i nfo r m a t i on Series Package type to be heatsinked RoHS Compliant EV-T220-51E Finish A = black anodized V = degreased Height (mm) Standard part numbers Part Number Description EV-T220-38E EA-T220-38E Heat sink for TO-220, no finish (degreased) Heat sink for TO-220, black anodized EV-T220-51E EA-T220-51E EV-T220-64E EA-T220-64E Heat sink for TO-220, no finish (degreased) Heat sink for TO-220, black anodized Heat sink for TO-220, no finish (degreased) Heat sink for TO-220, black anodized 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 1.378" (35.00mm ±.20) 0.50" (12.70mm) 0.196" (5.0mm ±.20) 0.720" (18.30mm ±.20) 1.00" (25.40mm ±.20) 2.0 / 50.80 0.630" (16.00mm ±.20) Packaging Bulk Bulk Bulk Bulk Bulk Bulk 175