Model RFP-1557-XX-XX Surface Mount Attenuator 100 Watts Description The RFP-1557-XX-XX family of surface mount attenuators consists of three parts matched to the complex impedance of each of the five high power Xinger circulators. With each attenuator matched to the circulator's complex impedance, the pair will provide superior performance and a true pick and place solution. The SMD attenuators are available for AMPS, GSM, DCS, PCS and UMTS frequency bands, and they can be used in many applications, not only as the load on the Xinger circulator. Other typical applications include the coupled port of the directional couplers. General Specifications Features: Resistive Element Substrate Terminal Finish Operating Temperature * 100 Watts * Lowest Cost * True Surface Mount * Xinger Circulator Matched * Alumina Ceramic Thick film Alumina Thick film Silver -55 to +125C (see chart) Tolerance is 0.010", unless otherwise specified. Designed to meet of exceed applicable portions of MIL-E -5400. All dimensions in inches. Electrical Specifications 20, 30 dB 2dB 100 Watts 869-960, 1805-1990, 2110-2170 MHz <1.20:1 * Low VSWR Attenuation Value: Power: Frequency Range: V.S.W.R.: * 100% Tested Specification based on unit properly installed using suggested mounting instructions and a 50 ohm nominal impedance. Specifications subject to change without notice * Non-Nichrome Resistive Element Outline Drawing 0.232 [5.91] 0.233 [5.91] 0.060 [1.52] 0.035 [0.90] 0.500 [12.70] 0.033 [0.84] 1557-XX-XXX 0.500 [12.70] RFP 0.047 [1.21] 0.060 [1.52] 0.200 [5.08] O0.474 [O12.03] O0.118 [O3.00] (2X) 0.040 [1.02] 0.060 [1.53] (2X) 0.063 [1.61] (2X) 0.100 [2.54] 0.182 [4.64] 0.135 [3.43] Dimensions given in inches [millimeters] Rev. 10/31/03 Available on Tape and Reel For Pick and Place Manufacturing. USA/Canada: Toll Free: Europe: (315) 432-8909 (800) 544-2414 +44 2392-232392 Model RFP-1557-XX-XX Specifications: PART NUMBER FREQUENCY (MHz) ATTENUATION (dB) TOL. (+/-dB) VSWR RFP-1557-9-20 869-960 20 1.0 1.20:1 RFP-1557-19-20 1805-1990 20 1.0 1.20:1 RFP-1557-21-20 2110-2170 20 1.0 1.20:1 RFP-1557-9-30 869-960 30 1.5 1.20:1 RFP-1557-19-30 1805-1990 30 1.5 1.20:1 RFP-1557-21-30 2110-2170 30 1.5 1.20:1 MATCHED CIRCULATOR X800x-100 X900x-100 X180x-100 X190x-100 X210x-100 X800x-100 X900x-100 X180x-100 X190x-100 X210x-100 Note: X800x-100, where x refers to the circulator direction of rotation: L for clockwise or R for counter clockwise rotation, i.e. X800R-100. Power De-rating: Tape & Reel: .945 [24.01] .164 [4.18] .079 [2.01] RFP .069 [1.75] PART NUMBER O.059 [O1.50] .535 [13.60] .012 [0.30] .945 [24.01] .453 [11.51] INPUT PAD .062 [1.58] .535 [13.60] .106 [2.69] DESPOOLING DIRECTION DIMENSION IN INCHES [MILLIMETERS] Mounting Footprint and Procedure: 0.155 [3.93] 50 ohm line O0.019 [O0.48] 0.036 [0.92] O0.061 [O1.56] 2x 4-40 Screw Hole 1557-XX-XX 0.024 [0.62] RFP 0.082 [2.08] 0.036 [0.92] MOUNTING PROCEDURE 0.018 [0.46] 0.018 [0.46] 0.061 [1.54] 1. Drill thermal vias through PCB and fill with solder, such as SN63 type. 50 ohm line 0.024 [0.62] 0.273 [6.93] 2. Solder part in place using SN63 type solder with controlled temperature iron (700C). Dimension given in inches [millimeters] For best thermal performance the PCB should be soldered to the heat sink. USA/Canada: Toll Free: Europe: (315) 432-8909 (800) 544-2414 +44 2392-232392 Available on Tape and Reel For Pick and Place Manufacturing. 3. To ensure good thermal connectivity to heat sink, which is critical for proper operation, drill and tap heatsink and mount PCB board to heatsink using screws.