Approval sheet
SOLDERING CONDITION
The robust construction of chip resistors allows
them to be completely immersed in a solder bath
of 260C for 10 seconds. Therefore, it is possible
to mount Surface Mount Resistors on one side of
a PCB and other discrete components on the
reverse (mixed PCBs).
Surface Mount Resistors are tested for
solderability at 235C during 2 seconds. The test
condition for no leaching is 260C for 30 seconds.
Typical examples of soldering processes that
provide reliable joints without any damage are
given in Fig 3.
Fig 3. Infrared soldering profile for Chip Resistors array
CATALOGUE NUMBERS
The resistors have a catalogue number starting with .
WA02
Size code
WA02 : 0201
F
472_
Resistance code
significant digits
J
T
L
Type code
Tolerance
J : 5%
Packaging code Termination code
F
: x4, Reverse 5% E24 :
Flat Array
2
T :
L
= Sn base
(lead free)
followed by no. of zeros and
a blank
7” 10kpcs Reel
F : 1%
taping
P : Jumper
4.7
=4R7_
=100_
=221_
=000_
10
220
Jumper
(“_” means a blank)
1%, E24+E96: 3 significant digits
followed by no. of zeros
100
=1000
=3742
37.4K
Reeled tape packaging
: 8mm width paper taping 7” reel 10,000pcs per reel,
Recommended Land Pattern Dimensions:
Page 5 of 7
ASC_WA02F_V05
JAN - 2022