EX-SERIES OHMITE | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 2

Technical content

1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com172 EX Series Heatsinks For TO-220 and TO-247 devices and bridge rectifiers For Ohmite Surface Thermal Heatsink Package Resistor Area Weight Resistance* Part Number Type Series (in2 /mm2) (oz./g) (°C/W) E2A-T220-38E TO-220 TBH, TCH 7.96 / 5129 0.40 / 11.21 14.0 E2A-T220-25E TO-220 TBH, TCH 5.30 / 2419 0.26 / 7.5 16.4 E2A-T247-38E TO-247 TEH100 7.95 / 5129 0.40 / 11.21 14.0 E3A-T220-25E D34 9.4 / 6064 0.60 / 17.0 12.4 *Natural convection at 5W dissipation Heat DissipationHeat sink Aluminum 6063-T5 or equiv- alent with either black anod- ized or degreased finish Solder feet steel tin plated Interface thermal resistance for improvement, use thermal joint compound or 0.005 Grafoil (TGon 800 by Laird) Interface electrical isolation Sil-Pad 900S by Bergquist or equivalent

FEaturES

  • Vertical through-hole PCB mounting
  • E3A-T220-25E has a 8-32 threaded mounting hole for a bridge rectifier in a D34 type square package
  • The thickened side fins can be used to secure the heat sink to a side wall or to mount TO-220"s
  • Threaded mounting holes cHaractEriSticS SEriES SPEciFicatiONS (continued) 300100 200 600400 500 900700 800 Heat Dissipated (watts) 210 543 8 976 100 0 1000 Air Velocity (ft./min.) Thermal Resistance from Mounting Surface to Ambient (°C/watts) Mounting Surface Temp. Rise above Ambient (°C) E2A-T220-25E E2A-T220-38E E2A-T247-38E E3A-T220-25E

1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 173 EX Series Heatsinks For TO-220 and TO-247 devices and bridge rectifiers dimENSiONS in. (mm)

OrdEriNg iNFOrmatiON

A = anodized 0.64" (16.3mm) 0.64" (16.3mm) 0.136" ±.010 (25.4mm) #6-32 thread thru Tin-plated steel pins 0.72" (18.3mm) 0.156" (4.0mm) 0.40" (10.2mm) 0.160" REF. 0.090" (2.3mm) 0.64" (16.3mm) 0.64" (16.3mm) 0.136" ±.010 (38.1mm) 1.50" (38.1mm) #6-32 tap thru Tin-plated steel pins 0.72" (18.3mm) 0.156" (4.0mm) 0.40" (10.2mm) 0.160" REF. 0.090" (2.3mm) 0.64" (16.3mm) 0.64" (16.3mm) 0.136" ±.010 (38.1mm) #6-32 tap thru 0.850" (21.6mm) 0.156" (4.0mm) 0.40" (10.2mm) 0.090" (2.3mm) 0.320" ø0.164" hole #8-32 UNC-2B thread, thru 0.50" (12.7mm) 0.50" (12.7mm) 1.00" (25.4mm) 1.00" (25.4mm) 1.00" (25.4mm) E2A-T220-38E E2A-T220-25E E2A-T247-38E E3A-T220-25E