Approval sheet

Page 5 of 7

ASC_WW25R_J_AUTO_V01

JULY -2015

SOLDERING CONDITION

The robust construction of chip resistors allows them to be completely immersed in a solder bath of 260

°C 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 235

°C during 3 seconds. The test condition for no

leaching is 260

°C 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 WW25

CATALOGUE NUMBERS

The resistors have a catalogue number starting with .

WW25

R

R001

F

T

L

J

Size code

WW25 : 2512

Type code

R : 2W

Sensing type

Resistance code

R is first digit followed by

3 significant digits.

0.001

Ω = R001

0.005

Ω = R005

0.010

Ω = R010

0.0005

Ω = R0L5

Tolerance

J :

±5%

F :

±1%

Packaging code

T : 7” Reel taping

Termination

code

L = Sn base

(lead free)

Special code

J = AEC Q200

compliant

Reeled tape packaging

: 12mm width plastic emboss taping 4,000pcs per reel.