U840 APEM Components, U840 Datasheet - Page 6
U840
Manufacturer Part Number
U840
Description
Switch Boot
Manufacturer
APEM Components
Specifications of U840
Leaded Process Compatible
Yes
For Use With
U480 And U2900 Caps
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
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APEM
P.C. BOARD REWORK RECOMMENDATIONS
Hot air reflow technique is preferred. Avoid the
use of a soldering iron.
Caution: Excessive and/or repeated high temp-
erature exposure may affect switch performance
& reliability.
The printed circuit board, carried by a conveyor belt,travels through the reflow
soldering oven and experiences the following programmed cycles:
C
240
200
100
0
TP SERIES - SMT WASHABLE TINY PUSHBUTTON SWITCHES
0
, PO BOX 8288, HAVERHILL, MA USA 01835-0788 TOLL FREE: (877) 246-7890 FAX: (781) 245-4531 E-mail: info@apem.com
a. pre-heat to a maximum of 200°C for 30 seconds
b. reflow at a maximum of 245°C for 10 seconds
c. final cleaning
pre-heating
TEMPERATURE/TIME PROFILE (typical)
150 C
60
drying
stabilization
60 s
REFLOW SOLDERING - STANDARD PROFILE
120
170 C
reflow
peak
240 C
180
gradual cooling
240
t (s)
Reflow
soldering
P.C. board
Solder paste
application
Component
placement
Final
cleaning
PROCESSING STEPS
C5
C
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