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Document 143-1
Standard Series
High L Series
Common Mode Line Chokes
Coilcraft’s Toroid Style common mode chokes are de-
signed for optimum performance.Their single layer wind-
ings provide for the highest common mode impedance
over the widest frequency range.
These common mode line chokes come in two series:
Standard and High Inductance. Both are well suitable for
switching power supplies operating in the 100-300 kHz
range of switching frequencies.
• UL1446 Class B (130°C) Insulation System
(UL File E83628)
• Creepage and clearance = 3.2 mm
• 1250 Vrms, one minute isolation between windings
Coilcraft Designer’s Kit P402 contains samples of eight
standard EE and toroidal common mode line chokes.
To order, please contact Coilcraft or purchase on-line at
buy.coilcraft.com.
Standard Series
0.12
3,0
Recommended
Board Layout3
Parts manufactured prior
to February, 2012 may be
marked differently.
Schematic
4
1
2
4
3
1.23
max
31,2
0.400
10,16
Part number
Internal code
P321x-AL
1
2
CC-3Y
XXXX
0.800
20,32
1
2
2
3
0.150 0.03
3,81 0,ꢀ6
1.25
31,8
max
0.625
15,88
max
Terminations: Tin-silver over copper; #16 AWG (0.051″/1,29 mm) except P3217-A,
which has #18 AWG (0.040″/1,02 mm).
High Inductance Series
0.12
3,0
Recommended
Parts manufactured prior
to February, 2012 may be
marked differently.
Board Layout
Schematic
4
3
1.40
1
2
4
3
max
35,6
0.600
15,24
Part number
Internal code
P32xx-AL
1
2
CC-3Y
XXXX
0.900
22,86
2
3
1
2
0.150 0.03
3,81 0,ꢀ6
1.40
35,6
0.900
22,86
max
max
Terminations: Tin-silver over copper; #16 AWG (0.051″/1,29 mm). #16 AWG tinned
copper wire leads except P3223-A, which has #18 AWG leads.
Document 143-1 Revised 11/01/18
© Coilcraft Inc. 2018
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg