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Chokes for Power Lines
Current-Compensated Ring Core Double Chokes
Construction
s Current-compensated ring core double choke
with ferrite core
s Polycarbonate case
s Polyurethane potting
s Sector winding
Features
s Case and potting flame-retardant
as per UL 94 V-0
s High resonance frequency owing
to special winding technique
s Approx. 1 % stray inductance for symmetrical
interference suppression
Applications
Application
Electronic ballasts
in lamps
Switch-mode power supplies
in TV sets
Washing machines
Power supplies
Chargers
Type
B82721
B82722
B82721 …
B82725
B82724
B82725
B82724
B82725
B82725
Terminals
s Pins 0,7 × 0,7 mm or 1 × 1 mm (B82725)
s 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
Approvals1)
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
B82721
… B82725
Chokes for Power Lines
Current-Compensated Ring Core Double Chokes
Dimensional drawings and pin configuration
Horizontal version (B82721-A)
Vertical version (B82721-K)
2,5 _0,4
15±0,2
5±0,2
B82721
3+0,5
12,6 _0,8
10±0,2
17,3 max.
18,2 max.
7,3 _1
9,7 _0,5
SSB0781-J
1)
0,7 x 0,7
SSB0782-S
General technical data
Rated voltage VR
Test voltage VT
Rated current IR
Inductance tolerance
Weight
250 Vac
1500 Vac, 2 s (line/line)
Referred to 50 Hz and 60 °C ambient temperature
± 30 %
Approx. 5 g
For further technical data see page 334. For impedance = f (f ) see page 355
Characteristics and ordering codes
IR
LR
LS, typ
Rtyp
A
mH µH
mΩ
0,4 39 450 2000
0,4 27 270 1700
0,5 18 260 1500
0,7 10
90 600
1,2
6,8 70
280
1,5
3,3 37
190
2,0 1,0 13 90
2,6 0,4 6 60
3,6 0,4 6 35
Ordering code
horizontal version
B82721-A2401-N20
B82721-A2401-N21
B82721-A2501-N1
B82721-A2701-N20
B82721-A2122-N20
B82721-A2152-N1
B82721-A2202-N1
B82721-A2262-N1
B82721-A2362-N1
vertical version
B82721-K2401-N20
B82721-K2401-N21
B82721-K2501-N1
B82721-K2701-N20
B82721-K2122-N20
B82721-K2152-N1
B82721-K2202-N1
B82721-K2262-N1
B82721-K2362-N1
1) Vertical version with lead spacing 5 mm × 10 mm upon request.
348 04/00
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