IS-2 PN: 10300-00042 Rev. B Model S110-1, S110-3 IS
1. Introduction
This Instruction Sheet provides the tools list and procedure for installing S110-1-R and S110-3-R sliding
contacts on the pin of the glass bead and mating them with the microcircuit.
2. Tools and materials
The installation tools and materials are listed in Table 1.
3. Procedure
The following is the recommended procedure for installing the sliding contacts and mating them with the
microcircuit.
1. Install the microcircuit and glass bead as directed by the connector manufacturer.
2. Check that the glass bead center pin is level with the top of the microcircuit (± 0.051 mm). If necessary,
bend the pin to achieve this degree of levelness.
3. Use the tweezers to remove one of the S110 sliding contacts from the package.
With the sleeve-end facing the pin on the glass bead, lay the S110 on the microcircuit.
4. Refer to Figure 1. Use the tip of the jewelers screwdriver to gently press the S110 tab down onto the
microcircuit and in toward the glass bead. If necessary re-form the S110 using the tweezers as necessary.
However, ensure that it still makes firm contact with the bead pin.
5. Position the sliding contacts on the center pin.
6. Ensure that the tab makes good electrical contact with the microcircuit.
7. Measure the SWR (return loss) of the connection.
8. Slide the sleeve back and forth in small increments until the RF performance is optimized.
9. Attach the tab on the S110 to the microcircuit by any of the following three methods:
a. Soldering: For thin-film microcircuits, use Indium solder to prevent the leaching of gold from the
microcircuit. For other types, use any acceptable solder.
b. TC Bonding: Use ultrasonic or pulse bonding. Ensure that the tab firmly contacts the
microcircuit for best RF performance.
Table 1. Tools and Materials
Name Vendor and Model/Part Number
Stereo Microscope Bausch & Lomb 30 power
Parallel-Gap Welder and Pulse Bonder Hughes Model WCW550 with VTA-90 Head
Solder, Indium #2 Indium Corp. of America
Jewelers Screwdriver Any
Tweezers Any
Caution Use a minimum amount of solder to prevent the sleeve from becoming soldered to the pin.
