Conformal Coating - Rabbit RCM3365 User Manual

A.6 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-6. The conformal coating protects these high-impedance circuits from the
effects of moisture and contaminants over time.
Conformally coated
Figure A-6. RCM3365/RCM3375 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,
Conformal Coatings.
80
areas
R13
U2
U6
J1
R80 R64 R77
R9 R85 R70 R86
R10
C1 R6
Y1
U1
R4
C4
R5
U16
R8
C11
C15
U4 R18 R22
R1
R14
R15
C35
R26
R27
U13
C74
R45
U5
R59
R29
C5
R7
C2
C3
U3
C18
J6
C21
Q2
L4
C105
R67
C36
Y2
C61
C58 R44
R53
R54
R31
R30
R82
C80
C86
J2
L2
R35
DS2
R36
R37
R38
C78
RabbitCore RCM3365/RCM3375