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HFCT-5805A Datasheet(PDF) 4 Page - Agilent(Hewlett-Packard) |
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HFCT-5805A Datasheet(HTML) 4 Page - Agilent(Hewlett-Packard) |
4 / 10 page 4 Figure 4. Recommended Board Layout Hole Pattern 20.32 (0.800) TOP VIEW 2 x Ø 1.9 ± 0.1 (0.075 ± 0.004) 20.32 (0.800) 2.54 (0.100) 9 x Ø 0.8 ± 0.1 (0.032 ± 0.004) DIMENSIONS ARE IN MILLIMETERS (INCHES) used. Ferrite beads can be used to replace the coil inductors when using quieter VCC supplies, but a coil inductor is recommended over a ferrite bead. All power supply components need to be placed physically next to the VCC pins of the receiver and transmitter. Use a good, uniform ground plane with a minimum number of holes to provide a low- inductance ground current return for the power supply currents. In addition to these recommendations, Agilent’s Application Engineering staff is available for consulting on best layout practices with various vendors mux/demux, clock generator and clock recovery circuits. Agilent has participated in several reference design studies and is prepared to share the findings of these studies with interested customers. Contact your local Agilent sales representative to arrange for this service. Evaluation Circuit Boards Evaluation circuit boards are available from Agilent’s Application Engineering staff. Contact your local Agilent sales representative to arrange for access to one if needed. Recommended Solder and Wash Process The HFCT-5805 is compatible with industry standard wave or hand solder processes. A drying cycle must be completed after wash process to remove all moisture from the module. HFCT-5805 Process Plug The HFCT-5805 transceiver is supplied with a process plug for protection of the optical ports with the Duplex SC connector receptacle. This process plug prevents contamination during wave solder and aqueous rinse as well as during handling, shipping or storage. It is made of high-temperature, molded, sealing material that will withstand +85°C and a rinse pressure of 110 lb/in2. Recommended Solder Fluxes and Cleaning/Degreasing Chemicals Solder fluxes used with the HFCT-5805 fiber-optic transceiver should be water-soluble, organic solder fluxes. Some recommended solder fluxes are Lonco 3355-11 from London Chemical West, Inc. of Burbank, CA, and 100 Flux from Alpha- metals of Jersey City, NJ. Recommended cleaning and degreasing chemicals for the HFCT-5805 are alcohol’s (methyl, isopropyl, isobutyl), aliphatics (hexane, heptane) and other chemicals, such as soap solution or naphtha. Do not use partially halogenated hydrocarbons for cleaning/degreasing. Examples of chemicals to avoid are 1.1.1. trichloroethane, ketones (such as MEK), acetone, chloroform, ethyl acetate, methylene dichloride, phenol, methylene chloride or N-methylpyrolldone. |
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