P Series Heatsinks Forged Pin Fin heatsink for TO-220, TO-247 and TO-264 devices Ohmite introduces the P series forged pin-fin heatsink (Pat. Pending). The P series heat sinks offer an all-in-one solution combining a compact design with a universal cam clip system for TO-220, TO-247, TO-264 package devices. This powerful forged pin heatsink is designed to be thru-hole soldered to the PCB board. The forged pin design allows forced convection cooling in multiple directions. The pin fin design allows for a larger surface area creating minimum thermal flow impedance. The P series is the ideal type of heat sink for high power and small size (1U or 2U) electronic packaging with natural and forced convection cooling. S ERIE S S P ECI F ICATI O N S Heatsink Part Number Configuration PA-T2X-38E Single, 1 clip PV-T2X-38E Single, 1 clip PA-T21-38E Dual, 1 clip PV-T21-38E Dual, 1 clip PA-T22-38E Dual, 2 clip PV-T22-38E Dual, 2 clip Surface Area (in2 /mm2) 13.4 / 8,675 13.4 / 8,675 23 / 14,823 23 / 14,823 23 / 14,823 23 / 14,823 Weight (oz./g) 0.7 / 20 0.7 / 20 1.3 / 39 1.3 / 39 1.3 / 39 1.3 / 39 *--Thermal Resistance is in open space @14 W power dissipation (28 watts for T21-T22 dual) Length (in /mm) 1.18 / 30 1.18 / 30 1.18 / 30 1.18 / 30 1.18 / 30 1.18 / 30 Rc-a* (C/W) 7.46 8.07 3.13 3.89 3.13 3.89 characteristics Interface For improvement, use thermal joint compound, thermal 0.005 Grafoil (TGon 800 by Laird), or phase resistance change material (Hi-Flow by Bergquist) Insulator Sil-Pad 900-S, K6 800-S and K10 by Bergquist 100 100 Single: T2X 80 60 40 20 0 172 120 120 Average Case Temp. Rise above Ambient (C) Solder feet Brass with pure tin or nickel. RoHS compliant Thermal Performance Average Case Temp. Rise above Ambient (C) Heat sink AL1070 Spring clip Music Wire, Per ASTM A228 with bright nickel plating 0 6 8 10 12 Heat Dissipated (watts) 1-866-9-OHMITE * Int'l 1-847-258-0300 * Fax 1-847-574-7522 * www.ohmite.com * info@ohmite.com 16 Double: T21-T22 80 60 40 20 0 0 12 16 20 24 Heat Dissipated (watts) 28 P Series Heatsinks Forged Pin Fin heatsink for TO-220, TO-247 and TO-264 devices d i m e ns i ons Dual: T21 and T22 Single: 0.45" REF (11.4mm) Dual: 0.55" REF (14.0mm) Single: T2X 2.17" (55.1mm) 1.18" (30.0mm) 1.11 " (28.2mm) 1.52" (38.6mm) 1.50" (38.1mm) 0.69" (17.5mm) 1.40" (35.6mm) 0.65 (16.5mm) 0.10" REF (2.5mm) 1.62" (41.1mm) Single: Dual: 1.18" 2.17" (30.0mm) (55.1mm) Land Pattern Note: For dual heat sink, Device holes spaced 1.11" [28.2mm] and 0.555" [14.1mm] equally from center line Single: Dual: 0.122" 0.125" (3.1mm) (3.2mm) o0.105" pth (2.67mm) 0.69" (17.5mm) 0.12" (3.0mm) Single: Dual: 0.71" 1.62" (18.0mm) (41.1mm) o r d e r i n g i nfo r m a t i on Package TO- devices Standard Part Numbers Package variation PA-T2X-38E Series Finish P A = anodized V = degreased Height RoHS (mm) Compliant Part number Configuration PA-T2X-38E PV-T2X-38E Single, Anodized, 1 clip Single, Degreased 1 clip PA-T22-38E PV-T22-38E Dual, Anodized 2 clips Dual, Degreased 2 clips PA-T21-38E PV-T21-38E Dual, Anodized 1 clip Dual, Degreased 1 clip rev 2/19-3 1-866-9-OHMITE * Int'l 1-847-258-0300 * Fax 1-847-574-7522 * www.ohmite.com * info@ohmite.com 173