User's Manual

4. Cautions
Failure to follow the guidelines set forth in this document may result in degrading of the modules functions and damage to
the module.
4.1. Design Notes
1. Follow the conditions written in this specification, especially the control signals of this module.
2. The supply voltage must be free of AC ripple voltage (for example from a battery or a low noise regulator output).
For noisy supply voltages, provide a decoupling circuit (for example a ferrite in series connection and a bypass
capacitor to ground of at least 47 μF directly at the module).
3. This module should not be mechanically stressed when installed.
4. Keep this module away from heat. Heat is the major cause of decreasing the life time of these modules.
5. The supply voltage should abide by the maximum ratings.
It should not carry noise and/or spikes.
6. Avoid assembly and use of the target equipment in conditions where the module temperature may exceed the
maximum tolerance.
7. Keep this module away from other high frequency circuits.
8. Refer to the recommended pattern when designing a board.
4.2. Installation Notes
1. Reflow soldering is possible twice based on the conditions set forth in Set up the temperature at the soldering
portion of this module according to this reflow profile.
2. Carefully position the modules so that their heat will not burn into printed circuit boards or affect the other
components that are susceptible to heat.
3. Carefully locate the module, to avoid an increased temperature caused by heat generated by neighboring
components.
4. If a vinyl-covered wire comes into contact with the module, the wire cover will melt and generate toxic gas,
damaging the insulation. Never allow contact between a vinyl cover and these modules to occur.
5. This module should not be mechanically stressed or vibrated when reflowed.
6. To repair the board by hand soldering, follow the conditions set forth in this chapter.
7. Do not wash the module.
8. Pressing on parts of the metal cover or fastening objects to the metal will cause damage to the unit.
5. Usage Condition Notes
1. Take measures to protect the module against static electricity.
If pulses or transient loads (a large load, which is suddenly applied) are applied to the modules, check and evaluate
their operation before assembly of the final products.