Epcos B82721A Series Common Mode Choke
Current-compensated ring core double chokes with a ferrite core in flame retardant potting and case to (UL94V-0)
High resonance frequency by virtue of the unique winding technique used
Applications include switch-mode power supplies for computers, televisions and other sensitive electronic equipment. Additionally the B82721/2/3/4/5A ranges of chokes are suitable for electronic ballasts in lamps, and the B82725J range of chokes is ideally suited for washing machines and chargers.
Low profile horizontal (-A/-B) versions
Vertical (-J/-K) versions save PCB space
Model
B82721
B82722
B82723
B82724
B82725
PCB Pin Spacing (mm)
10x15
12.5x20 (-A),
12.5x10 (-J)
15x25 (-A),
15x12.5 (-J)
30x20 (-B)
15x40
Pin cross sectional area (mm)
0.7x0.7
0.7x0.7
0.7x0.7
0.7x0.7
1.0x1.0
L
R
Measuring Frequency
10kHz (1mH), 100kHz (>1)
10kHz (1mH), 100kHz (>1)
10kHz (1mH), 100kHz (>1)
10kHz (1mH), 100kHz (>1)
10kHz (1mH), 100kHz (>1)
Insulation Resistance Test Voltage (Line-line)
1500V a.c. 2s (line-line)
1500V a.c. 2s (line-line)
1500V a.c. 2s (line-line)
1500V a.c. 2s (line-line)
1500V a.c. 2s (line-line)
IEC Climatic Category
40/125/56
40/125/56
40/125/56
40/125/56
40/125/56
Note
The stated Rated Current I
R
is referenced to 50Hz @ T
A
40°C
The stated Rated Inductance L
R
is per Coil @ 20°C
Approvals
VDE; UL Recognised Component
Standards
VDE 0565-2 UL 1283
Approvals
UL; VDE
