Construction
■ Current-compensated ring core double choke
with ferrite core
■ Polycarbonate case
■ Polyurethane potting
■ Sector winding
Features
■ Case and potting flame-retardant
as per UL 94 V-0
■ High resonance frequency owing
to special winding technique
■ Approx. 1 % stray inductance for symmetrical
interference suppression
Applications
Application Type
Electronic ballasts
in lamps
Switch-mode power supplies
in TV sets
B82721
B82722
B82721 …
B82725
Washing machines B82724
B82725
Power supplies B82724
B82725
Chargers B82725
B82721Chokes for Power Lines
… B82725Current-Compensated Ring Core Double Chokes
Terminals
■ Pins 0,7 × 0,7 mm or 1 × 1 mm (B82725)
■ Pins fitting standard PCB grid
Marking
Ordering code, rated current, rated inductance,
rated voltage (except B82721-K), graphic symbol,
mark of conformity, manufacturer, date of manufacture
Approvals
1)
Marks of conformity Standards
VDE 0565-2
EN 60938-2 (pending)
UL 1283
1) Approvals to EN 60938-2 and UL 1283 pending for B82725-J.
347 04/00
Current-Compensated Ring Core Double Chokes
Dimensional drawings and pin configuration
Horizontal version (B82721-A) Vertical version (B82721-K)
B82721Chokes for Power Lines
0,7 x 0,7
3+0,5
_
12,6 0,8
_
0,42,5
15±0,2
17,9 max.
10±0,2
17,3 max.
SSB0781-J
10±0,2
_
81
15±0,2
5±0,2
18,2 max.
_
1)
0,7 x 0,7
13,2 max.
_
17,3
_
15,5
_
20,3 0,6
9,7 0,5
_
2,7 0,5
SSB0782-S
General technical data
Rated voltage
Test voltage
Rated current
V
R
V
T
I
R
250 Vac
1500 Vac, 2 s (line/line)
Referred to 50 Hz and 60 °C ambient temperature
Inductance tolerance ± 30 %
Weight Approx. 5 g
For further technical data see page 334. For impedance = f (f) see page 355
Characteristics and ordering codes
I
R
A
L
mH
R
L
µH
S, typ
R
mΩ
typ
Ordering code
horizontal version vertical version
0,4 39 450 2000 B82721-A2401-N20 B82721-K2401-N20
0,4 27 270 1700 B82721-A2401-N21 B82721-K2401-N21
0,5 18 260 1500 B82721-A2501-N1 B82721-K2501-N1
0,7 10 90 600 B82721-A2701-N20 B82721-K2701-N20
1,2 6,8 70 280 B82721-A2122-N20 B82721-K2122-N20
1,5 3,3 37 190 B82721-A2152-N1 B82721-K2152-N1
2,0 1,0 13 90 B82721-A2202-N1 B82721-K2202-N1
2,6 0,4 6 60 B82721-A2262-N1 B82721-K2262-N1
3,6 0,4 6 35 B82721-A2362-N1 B82721-K2362-N1
3+0,5
1) Vertical version with lead spacing 5 mm × 10 mm upon request.
348 04/00
Current-Compensated Ring Core Double Chokes
Dimensional drawings and pin configuration
Horizontal version (B82722-A) Vertical version (B82722-J)
_
0,42,5
_
0,42,5
B82722Chokes for Power Lines
10±0,2
0,7 x 0,7
3,6±0,4
_
13,3 0,8
12,5±0,2
22,3 max.
20±0,2
22,7 max.
SSB0928-B
0,7 x 0,7
4+1
_
25,4 0,8
12,5±0,2
16,1 max.
General technical data
Rated voltage
Test voltage
Rated current
V
R
V
T
I
R
250 Vac
1500 Vac, 2 s (line/line)
Referred to 50 Hz and 60 °C ambient temperature
Inductance tolerance ± 30 %
Weight Approx. 10 g
For further technical data see page 334. For impedance = f (f) see page 355
Characteristics and ordering codes
I
R
A
L
mH
R
L
S, typ
µH
R
mΩ
typ
Ordering code
horizontal version vertical version
0,3 47 760 2500 B82722-A2301-N1 B82722-J2301-N1
0,5 27 430 1200 B82722-A2501-N1 B82722-J2501-N1
1 10 140 480 B82722-A2102-N1 B82722-J2102-N1
2 2,2 30 130 B82722-A2202-N1 B82722-J2202-N1
3 1,2 17 56 B82722-A2302-N1 B82722-J2302-N1
23,3 max.
SSB0929-J
349 04/00
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