TAI-TECH
www.tai-tech.com.tw
D
A
E
C
D
B
1. Features
2. Dimension
3. Part Numbering
4. Specification
TAI-TECH
Part Number
Common mode
Impedance
(Ω)
Test Frequenc y
(MHz)
DC
Resistance
(Ω) max.
Rated Current
(mA)max.
Rated Volt.
(Vdc)max.
Withstand
Volt. (Vdc)
max.
IR
(Ω) min.
WCL21S670-04A 67±25% 100 0.25 400 50 125 10M
WCL21S900-04A 90±25% 100 0.30 400 50 125 10M
WCL21S121-04A 120±25% 100 0.30 400 50 125 10M
WCL21S161-03A 160±25% 100 0.35 350 50 125 10M
WCL21S181-03A 180±25% 100 0.35 350 50 125 10M
WCL21S221-03A 220±25% 100 0.40 300 50 125 10M
WCL21S261-03A 260±25% 100 0.40 300 50 125 10M
WCL21S361-03A 360±25% 100 0.50 300 50 125 10M
1. High common mode impedance at high frequency cause excellent noise
suppression performance.
2. WCL21S series realizes small size and low profile. 2.0x1.2x1.2 mm.
3. 100% Lead(Pb) & Halogen-Free and RoHS compliant.
4.
Operating temperature-40~+125℃ (Including self - temperature rise)
Series A(mm) B(mm) C(mm) D1(mm) D2(mm) E(mm)
21S 2.0±0.2 1.2±0.2 1.2±0.2 0.50±0.1 0.51±0.1 0.15±0.1
Wi
re
W
oun
d
Typ
e
C
ommon
M
o
d
e
Filt
e
r
WCL21S-SERIES
Halogen-free
Halogen
WCL 21 S 181 - 03A
A B C D E
A: Series
B: Dimension
C: Material
D: Impedance 181=180Ω
E: Rated Current 03=350mA
TAI-TECH
www.tai-tech.com.tw
Typical Impedance v.s. Frequency Curve
1 10 100 1000 10000
FREQUENCY(MHz)
0.1
1
10
100
100
0
IMPEDANCE(Ohm)
Common Mode
Normon Mode
WCL21S181-03A
1 10 100 1000 10000
FREQUENCY(MHz)
0.1
1
10
100
1000
IMPEDANCE(Ohm)
Common Mode
Normal Mode
WCL21S670-04A
1 10 100 1000 10000
FREQUENCY(MHz)
0.1
1
10
100
100
0
IMPEDANCE(Ohm)
Common Mode
Normal Mode
WCL21S900-04A
1 10 100 1000 10000
FREQUENCY(MHz)
0.1
1
10
100
100
0
IMPEDANCE(Ohm)
Common Mode
Normon Mode
WCL21S121-04A
1 10 100 1000 10000
FREQUENCY(MHz)
0.1
1
10
100
100
0
IMPEDANCE(Ohm)
Common Mode
Normon Mode
WCL21S161-03A
1 10 100 1000 10000
FREQUENCY(MHz)
0.1
1
10
100
100
0
IMPEDANCE(Ohm)
Common Mode
Normon Mode
WCL21S221-03A
1 10 100 1000 10000
FREQUENCY(MHz)
0.1
1
10
100
100
0
IMPEDANCE(Ohm)
Common Mode
Normon Mode
WCL21S361-03A
1 10 100 1000 10000
FREQUENCY(MHz)
0.1
1
10
100
100
0
IMPEDANCE(Ohm)
Common Mode
Normal Mode
WCL21S261-03A