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Distributor of Digi International: Excellent Integrated System Limited
Datasheet of 101-0533 - KIT DEV RABBIT3000/RCM3100
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User’s Manual
43
A.5 Conformal Coating
The areas around the 32 kHz real-time clock crystal oscillator has 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.
Figure A-5. RCM3100 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
.
Conformally coated
area
C58
C43
RP1
C46
J3
C55
C13
R1
1
R12
C17
R16
C47
C18 C22
D1
C41
Q1
C56
R19
Y2
C26
R20
C42
C52
C45
C57
GND
RP2
JP4
JP3
JP2
JP1
C44
RP3
RP4
C53
C54
U2
C4
R5
R4 C3
Y1
C14
C39
R26
R14
U5
C23
C59
U7
R24
R17
R18
R21
R30
R23
U6
C24
C25
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