Approval sheet
STORAGE CONDITIONS
Under airtight in temperature+10℃~40℃、relative humidity ≦75% can store 2 years.
Without dew in temperature+10℃~60℃、relative humidity be 95% maximum value for 30days.
SOLDERING CONDITIONS
The robust construction of chip resistors allows them to be completely immersed in a solder bath of 260C for
max.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).
Typical examples of soldering processes that provide reliable joints without any damage are given in Fig3
as below.
Fig 3. Infrared soldering profile for Chip Resistors
CATALOGUE NUMBERS
The resistors have a catalogue number starting with .
L
WW12
D
R020
F
T
Size code
Type code
D : Metal foil
Resistance code
Tolerance
J : 5%
F : 1%
D : 0.5%
Packaging code
Termination code
WW25 : 2512
WW20 : 2010
WW12 : 1206
WW08 : 0805
WW06 : 0603
R is first digit followed by 3
significant digits.
T : 7” reeled in tape
L
= Sn base
(lead free)
0.020
0.040
=
=
R020
R040
1206/ 0805/ 0603 Reeled tape packaging
: 8mm width paper taping 5,000pcs per reel.
2512 Reeled tape packaging
: 8mm width PC taping 4,000pcs per reel.
Page 5 of 7
ASC_WWxxD_J_AUTO_V05
Dec - 2023