A.5 Conformal Coating
The areas around the 32 kHz real-time clock crystal oscillator have had the Dow Corning
silicone-based 1-2620 conformal coating applied. The conformally coated area is shown
in Figure A-5. The conformal coating protects these high-impedance circuits from the
effects of moisture and contaminants over time.
RP2
RP3
RP4
JP3
C59
C56
C53
C51
C55
C50
R24
Conformally coated
area
R21
C39
C28
C13
R3
C19
C14
C1
R1
Figure A-5. RCM3400 Areas Receiving Conformal Coating
Any components in the conformally coated area may be replaced using standard soldering
procedures for surface-mounted components. A new conformal coating should then be
applied to offer continuing protection against the effects of moisture and contaminants.
NOTE: For more information on conformal coatings, refer to Technical Note 303, Con-
formal Coatings .
68
RabbitCore RCM3400
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