Power line chokes
Current-compensated ring core double chokes
250 V AC, 0.25 … 0.9 A, 4.7 … 47 mH
Series/Type:
Date:
B82791G/H
July 2012
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© EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
Power line chokes
Current-compensated ring core double chokes
Rated voltage 250 V AC
Rated current 0.25 A to 0.9 A
Rated inductance 4.7 mH to 47 mH
Construction
■
■
■
■
B82791G/H
Current-compensated ring core double choke
Ferrite core with epoxy coating (UL 94 V-0)
Polycarbonate case (UL 94 V-0)
Sector winding
B82791G
Features
■
Without potting
■
High resonance frequency due to special
winding technique and omission of potting
■
Approx. 1.5% stray inductance
■
■
■
■
for symmetrical interference suppression
Suitable for wave soldering
Design complies with EN 60938-2 (VDE 0565-2) and UL 1283
UL
1)
and ENEC (VDE) approvals
RoHS-compatible
B82791H
Applications
■
Suppression of common-mode interferences
■
Electronic ballasts in lamps
■
Switch-mode power supplies
Terminals
■
■
■
■
■
Base material CuNi18Zn20
Layer composition Ni, Sn
Hot-dipped
Pins
0.6 mm
Lead spacing 10
15 (mm) or 12.7
5.08/2.54 (mm)
Marking
Manufacturer, approval signs, ordering code, graphic symbol,
rated current, rated voltage, rated inductance, date of manufacture (YYWWD)
Delivery mode
Cardboard box
1) UL approval with 300 V AC.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
07/12
Power line chokes
Current-compensated ring core double chokes
Dimensional drawings and pin configurations
Horizontal version (B82791G)
2.1 max.
3
17.5 max.
10±0.1
B82791G/H
4
ø0.6
2
15±0.1
8 max.
3
17.5 max.
4
1
2.8+0.5
Tolerances to ISO 2768-M
unless otherwise noted.
Dimensions in mm.
2
1
IND0247-U
Vertical version (B82791H)
Tolerances to ISO 2768-M
unless otherwise noted.
Dimensions in mm.
1) Vertical version with symmetrical lead spacing (5.08 mm
12.7 mm) is available on request (B82791K).
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3
07/12
Power line chokes
Current-compensated ring core double chokes
Technical data and measuring conditions
Rated voltage V
R
Test voltage V
test
Rated temperature T
R
Rated current I
R
Rated inductance L
R
Inductance tolerance
Inductance decreaseL/L
0
Stray inductance L
stray,typ
DC resistance R
typ
Solderability (lead-free)
250 V AC (50/60 Hz)
1500 V AC, 2 s (line/line)
+40 °C or +60 °C
Referred to 50 Hz and rated temperature
B82791G/H
Measured with Agilent 4284A at 10 kHz, 0.1 mA, +20 °C
Inductance is specified per winding.
–30/50% at +20 °C
< 10% at DC magnetic bias with I
R
, +20 °C
Measured with Agilent 4284A at 10 kHz, 5 mA, +20 °C,
typical values
Measured at +20 °C, typ. values, specified per winding
Sn96.5Ag3.0Cu0.5: +(245
5)
°C, (3
0.3)
s
Wetting of soldering area
95%
(to IEC 60068-2-20, test Ta)
+(260
5)
°C, (10
1)
s
(to IEC 60068-2-20, test Tb)
40/125/56 (to IEC 60068-1)
–25 °C … +40 °C,
75%
RH
Approx. 3 g
EN 60938-2, UL 1283
Resistance to soldering heat
(wave soldering)
Climatic category
Storage conditions (packaged)
Weight
Approvals
Characteristics and ordering codes
I
R
A
0.25
0.3
0.35
0.4
0.5
0.6
0.7
0.9
L
R
mH
47
30
22
15
10
6.8
4.7
4.7
L
stray,typ
R
typ
H
600
500
400
250
170
120
75
55
m
2400
2200
1900
1350
1000
630
440
250
T
R
°C
+40
+40
+40
+40
+40
+40
+40
+60
Ordering code
Horizontal version
Vertical version
Approvals
B82791G2251N020 B82791H2251N020
B82791G2301N001 B82791H2301N001
B82791G2351N001 B82791H2351N001
B82791G2401N001 B82791H2401N001
B82791G2501N001 B82791H2501N001
B82791G2601N001 B82791H2601N001
B82791G2701N001 B82791H2701N001
B82791G2901N020 B82791H2901N020
= approval granted
Please read
Cautions and warnings
and
Important notes
at the end of this document.
4
07/12
Power line chokes
Current-compensated ring core double chokes
Impedance |Z| versus frequency f
measured with windings in parallel at +20 °C,
typical values
10
6
IND0624-K
B82791G/H
Impedance |Z| versus frequency f
measured with windings in parallel at +20 °C,
typical values
Ω
| Z|
10
5
B82791
10
4
G/H2251N020
G/H2301N001
G/H2351N001
10
3
10
2 4
10
10
5
10
6
Hz 10
7
f
Current derating I
op
/I
R
versus temperature T
A
5
07/12
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