U840 APEM Components, U840 Datasheet - Page 6

• 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

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: [phone] FAX: [phone] E-mail: [e-mail]
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