Lead Free RF SOLUTIONS - WILLOW TECHNOLOGIES LTD RF POWER CHIP RESISTORS RFH, RFJ, RFK Features and Applications 5mm*2mm and 7mm*2mm small size 10W power chip resistors for RF applications. RFH and RFK are lead-less, RFJ have two beam leads. Strong terminals of RFH are prepared to extract heat from resistor chip to circuit board. RFJ and RFK have back metal for heart extraction. 10W (RFH72, RFH52) and 20W (RFK52, RFK72) power rating are available with beryllium free design. 1% tolerance and 50ppm/degree tight resistances enable stable application circuits. RF power amplifiers, RF power source, fixed station of cell phones, RF measurement and termination of circulators/isolators. Dimensions G B 00N B 101N 500 D B 101N 500 D D H C E C F E A F A A 5.0 7.0 5.0 7.0 5.0 7.0 A RFJ72 and RFJ52 RFJ are installed in rectangular hole on circuit board. Back metallization is prepared for heat extraction. RFK72 and RFK52 RFK are attached on micro strip line of circuit board. Resistance heat will be transferred through back metallization. RFH72 and RFH52 RFH are attached on micro strip line of circuit board. Resistance heat will be transferred through terminals. RFH52 RFH72 RFK52 RFK72 RFJ52 RFJ72 C B 2.5 2.0 2.5 2.0 2.5 2.0 C 1.2max 1.2max 1.2max 1.2max 1.2max 1.2max D 0.8 0.8 0.8 0.8 - E 0.8 0.8 - F 5.0 5.0 G 1.0 1.0 Note: Gap of “J” shall be sufficient height as RF characteristics. Willow Technologies Ltd. Shawlands Court Newchapel Road Lingfield Surrey RH7 6BL ENGLAND Tel. +44 (0) 1342 835234 Fax. +44 (0) 1342 834306 Web. www.willow.co.uk E-mail. [email protected] H 0.1 0.1 Lead Free RF SOLUTIONS - WILLOW TECHNOLOGIES LTD RF POWER CHIP RESISTORS RFH, RFJ, RFK Ordering Information P/N TYPE TCR RFH72C50ohmF001 RFH72 C(50ppm) RFK72C100ohmF000 RFK72 C(50ppm) RFJ72C150ohmF003 RFJ72 C(50ppm) RFJ52C100ohmF003 RFJ52 C(50ppm) Note: Only, RFH and RFK are lead-free structure. Resistance 50ohm 100ohm 100ohm 100ohm Tolerance F (1%) F (1%) F (1%) F (1%) Package Z01 (100pcs/Bulk) Z00 (100pcs/Bulk) 003 (100pcs/Tray) 003 (100pcs/Tray) Remarks Leadless Leadless Beam Leaded Beam Leaded Specifications and Performances Type RFH52 RFH72 RFJ52 RFJ72 RFK Rating Power with Heatsink 10W 10W 20W 20W 20W Resistance 50, 100, 150, 200, 250, 300, 400, 600, 800 Ω TC +/-50ppm/K (C) Tolerance +/-1.0% (F) Rated Ambient Temperature 70C Operating Temp Range -55C to +155C Load Life +/-0.5% Humidity +/-0.5% Series Inductance 3.2 uH Parallel Capacitance < 0.05 pF Note: Soldering temperature shall be under 350 C degree. RFK 20W % Rating Power 120 70 Ｃ RFH72 100 100mm 101N 80 60 CEM3 circuit board, t=0.4 40 20 0 155 Ｃ -55 -25 Aluminum plate 00mm 0 25 50 75 100 125 150 Ambient Temperature (degree C) Derating Heat-extraction system Wilkinson Power Splitter Z1 Z2 R1 Z3 R2 Z4 R3 R4 R0 R0 Z1 Z2 Z3 Z4 R0 Applications of RFH72 Application: Absorption resistor in Willkinson circuit. Willow Technologies Ltd. Shawlands Court Newchapel Road Lingfield Surrey RH7 6BL ENGLAND Tel. +44 (0) 1342 835234 Fax. +44 (0) 1342 834306 Web. www.willow.co.uk E-mail. [email protected] Lead Free RF SOLUTIONS - WILLOW TECHNOLOGIES LTD RF POWER CHIP RESISTORS RFH, RFJ, RFK 160 140 160 Resistor surface 140 120 100 120 100 Terminals 80 80 60 60 40 40 20 20 0 0 1 2 3 4 5 6 7 8 9 Temperature Rise, RFH72C101F on 0.8mm Glass Teflon PWB S11, RFH72C500F S11, RFH72C151F 10 (W) Resistor surface Terminals 0 2 4 6 8 10 12 14 16 18 20 (W) Temperature Rise, RFK72C101F attached on heat sink S11, RFH72C101F VSWR, RFH72C500F 20050212 Willow Technologies Ltd. Shawlands Court Newchapel Road Lingfield Surrey RH7 6BL ENGLAND Tel. +44 (0) 1342 835234 Fax. +44 (0) 1342 834306 Web. www.willow.co.uk E-mail. [email protected]