1. WTC CR Product Line Up
■ Ultra Miniaturized Chip Resistor : WR series
■ Ultra Miniaturized Chip Resistor Array 0201 x 2 : WA series
■ Surge Chip Resistors : WK series
■ Thin Film High Precision Chip Resistors : WF series
■ Metal Low Ohm Current Sensing Chip Resistors : WW series
■ Total Lead Free Chip Resistors : WR series
■ Automotive & Anti-Sulfuration Chip Resistors : WR / MR / SR series 1

2. Rated Resistance Range/Tol/T.C.R
CR (WR series)
NEW
Features:
Characteristics:
Miniaturization, Space Saving.
Low Cost Performance with Unique Laser Scribing.
Highly accurate Dimensions 4σ<<20μm.
The press pocket taping method.
Resin Paper Taping creates Sharp Style Pocket.
Wider Resistance Range　
RoHS Directive Compliance. L/F, H/F, A/F
Applications:
Modules (VCO,TCXO,PA Modules, Camera Modules), Small mobile devices.
Specifications:
Type　
Rated
Power
Limiting
Element
Voltage
Rated Resistance Range/Tol/T.C.R
WR01X
1/32W
15V
4.7Ω to 9.1Ω
F(±1%)
J(±5%)
-600 to +200*10-6/℃
10Ω to 91Ω
±300*10-6/℃
100Ωto 1MΩ
±200*10-6/℃
(1A) JP -
NEW 2 2

3. General Specification
CR 0201x2 Array (WA series)
NEW
FEATURES
0.8 x 0.6 x 0.35 mm3 – 0201x2 convex type array
0.5 mm termination pitch
Convex type termination
Unique surface treatment technology to have a excellent soldering wettability
APPLICATIONS
Miniature memory card
DSC, Computer application, Smart phone
Telecom, RAM-module
ELECTRICAL CHARACTERISTICS
PHYSICAL DIMENSIONS
Item
General Specification
Series No.
WA02Y
Size
0201x2 (0603x2)
Termination construction
Convex type
Resistance Tolerance
5%, 1% ( E24 series )
Resistance Range
10 ~ 1M,
Jumper (<50m)
TCR (ppm/C)
  300 ppm/C
Max. dissipation at Tamb=70C
1/32 W
Max. Operation Voltage
12.5V
Max. overload voltage
25V
Climatic category (IEC 60068)
55/155/56
Dimension (UNIT : mm) L
0.80  0.10 W
0.60  0.10 T
0.35  0.10 P
( 0.50  0.10 ) A Tb
0.15  0.10 Ta 3 3

4. CR Anti-surge Resistor (WK-S series)
Features
. High Anti-Surge capability
. Resistance Range: 0.27 ohm ~ 22 Mohm
. Chip Size: 0805,1206, 1210, 2010,2512
. Tolerance: ±5%, ±10%, ±20%
Applications
‧Photo disc driver / Printer ‧Automotive industry
‧Power supply
‧Medical or Military equipment ‧Measurement instrument
Surge resistor is designed in high surge applications such as fuel ignition system, power charging/discharging circuits, TV sets, etc, to absorb harmful surge power, so to prevent hazard of fire and circuit damage caused by surge power with a flame-proof coating. 4

5. CR Thin film high precision (WF-T, WF-U, WF-Q, WF-R series)
NEW
Features:
Low TCR 10ppm, 15ppm, 25ppm, 50ppm
High precision 0.05%, 0.1%, 0.5%
High stability in life reliability test 0.5%, 0.25%
Excellent HF performance
Low current noise
Specification:
TCR
(ppm/℃)
Size
(inch/mm)
Power
Rating
Type
Tolerance
Resistance
(Ω)
±50ppm
0402 (1005)
1/16W
WF04T
±0.05%
±0.10%
±0.25%
±0.50%
±1.00%
10 ~ 100K
0603 (1608)
WF06T
10 ~ 330K
1/10W
WF06Q
0805 (2012)
WF08T
10 ~ 1M
1/8W
WF08Q
1206 (3216)
WF12T
1/4W
WF12Q
±25ppm
WF04U
WF06U
WF06R
WF08U
WF08R
WF12U
WF12R
±15ppm
WF04F
100 ~ 20K
WF06F
100 ~ 100K
WF08F
100 ~ 200K
WF12F
±10ppm
WF04W
100 ~ 10K
WF06W
100 ~ 50K
WF08W
WF12W
Typical application fields:
1. M/B
2. Power supply (DC-DC converter )
3. Testing & measuring instruments
4. Audio/Video
5. Telecommunications
6. Server P/S
New
New
New 5

6. depending on min. demand 300Kpcs
CR Metal Low Ohm (WW_Q/R/M/N series)
NEW
Size
2512
2010
1206
Series
WW25M
WW25N
WW20M
WW20N
WW12M
WW12N
Rated Power 1W 2W
1/2W
Resistance Range
1~10, 12, 15,
20, 25, 30, 40, 50mΩ
20, 25mΩ
5, 10, 15, 20mΩ
5, 10, 15, 20, 25mΩ
Tolerance
±5%, ±1%
TCR
1mΩ - ±200ppm
2 ~ 4mΩ - ±100ppm
> 4mΩ - ± 75ppm
1 ~ 4mΩ - ±100ppm
± 75ppm
± 70ppm
Remark
1~50mΩ range is capable
depending on min. demand 300Kpcs
1~25mΩ range is capable
Size
2512
1206
0603
Series
WW25Q
WW25R
WW12R
WW06R
Rated Power 1W 2W
1/3W
Resistance Range
5, 6, 7, 10, 15mΩ
1, 2, 3, 4, 5, 6, 7mΩ
5, 10, 15mΩ
Tolerance
±5%, ± 1%
TCR
±100ppm
1mΩ - ±150ppm
> 1mΩ - ±100ppm
Remark
Mass production
Sample　Available 6 6

7. CR Total Lead Free ( Pb < 100ppm)
NEW 7 7

8. CR Automotive (WR, MR, SR series)
NEW
APPLICATIONS
FEATURES
Suitable for all kinds of Automotive application
Anti-sulfur satisfaction per different requirements
High reliable stability 1%
RoHS compliant
SPECIFICATIONS
Type
Application
concern
Chip Size
Tol.
Range
PPAP
AEC
Q-200
Stability
1000hrs
FOS
Sulfuration test
WR-J
Non Safety
0402/0603/0805
1206/2010/2512
±1% ±5%
1-10M
Ready
±2%
H2S 10ppm
40degC / 90%RH / 240hrs
WA-J
0402X4
0603X4
10-1M
WR-V
0603/0805/1206
1210/2512
ASTM B-809
60degC / 90%RH / 480hrs MR
Safety
±1%
H2S 3ppm
40degC / 90%RH / 1000hrs MA SR
0402/0603
0805/1206
H2S 1000ppm
25degC / 90%RH / 720hrs
BENCHMARKINGS 8 8