Approval sheet

Page 3 of 7

ASC_WW25P-20P-12P_V10

Sep.2013

QUICK REFERENCE DATA

Item

General Specification

Series No.

WW25P

WW20P

WW12P

Size code

2512 (6432)

2010 (5025)

1206 (3216)

Resistance Tolerance

±1%, ±5%

Resistance Range

0.040

Ω ~ 0.976Ω

0.020

Ω ~ 0.976Ω

TCR (ppm/

°C)

100mohm ~ 976mohm

47mohm ~ 97.6mohm

20 mohm ~ 43mohm

±100ppm

±150ppm

±200ppm

±100ppm

±150ppm

±200ppm

±100ppm

±200ppm

±1000ppm

°C

2 W

1 W

1/2 W

Max. Operation Voltage

300V

200V

200V

Max. Overload Voltage

500V

400V

400V

Climatic category (IEC 60068)

55/155/56

Note :

1.

This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication

60115-8”

2.

Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by

Value

Resistance

Power

Rated

RCWV

×

=

or Max. RCWV listed above, whichever is lower.

3.

2W loading with total solder-pad and trace size of 300 mm

2

4.

Resistance value will be changed by soldering condition and design of soldering pad, please design products in

consideration of this change of resistance value.

MECHANICAL DATA

Unit: mm

Symbol

WW25P

WW20P

WW12P

L

6.30

± 0.20

5.00

± 0.20

3.10

± 0.15

W

3.10

± 0.20

2.50

± 0.20

1.60

± 0.15

T

0.60

± 0.15

0.60

± 0.10

0.55

± 0.10

Tt

0.60

± 0.25

0.60

± 0.25

0.50

± 0.25

Tb

1.80

± 0.25

0.60

± 0.25

0.50

± 0.25