Power line chokes
Current-compensated E core double chokes
250 V AC, 0.3 … 1.8 A, 3.3 … 100 mH, +40 °C
Series/Type:
Date:
B82731T
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 E core double chokes
Rated voltage 250 V AC
Rated current 0.3 ... 1.8 A
Rated inductance 3.3 ... 100 mH
Construction
■
■
■
■
■
■
B82731T
Current-compensated double choke
Closed E ferrite core
Closed PET coil former with 4 sections (UL 94 V-0)
Without encapsulation
4-section winding
Clearances
2.5
mm, creepage distances
3
mm
Features
■
■
■
■
■
■
■
■
High resonance frequency due to 2-section winding
High pulse strength
Low whirring noise
Approx. 2% stray inductance for symmetrical
interference suppression
Suitable for wave soldering
Design complies with EN 60938-2 (VDE 0565-2) and UL 1283
UL and ENEC (VDE) approvals
RoHS-compatible
Applications
■
Suppression of common-mode interferences
■
Electronic ballasts for lamps
■
Switch-mode power supplies for consumer electronics
Terminals
■
Pins 0.64
0.64 (mm)
■
Lead spacing 10
10 (mm)
Marking
Manufacturer, rated current, rated inductance,
approvals, pin 1 marking, ordering code,
date of manufacture (YYWW), production place
Delivery mode
Blister tray in cardboard box
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
07/12
Power line chokes
Current-compensated E core double chokes
Dimensional drawing and pin configuration
1
3
B82731T
1
3
6 10±0.2 4
10±0.2
6
21.5 max.
4
IND0360-U
_
0.7
3.5
+0.0
21.1 max.
ø1.45±0.05
6
4
10
0.64
13.5 max.
1
10
3
Recommended hole arrangement
(view in mounting direction)
IND0359-Z-E
IND0361-L-E
Marking of pin 1
Tolerances to ISO 2768-C unless otherwise noted.
Dimensions in mm
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3
07/12
Power line chokes
Current-compensated E 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
Referred to 50 Hz and rated temperature
B82731T
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, typical values, specified per win-
ding
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. 15 g
EN 60938-2, UL 1283
Resistance to soldering heat
(wave soldering)
Climatic category
Storage conditions (packaged)
Weight
Approvals
Please read
Cautions and warnings
and
Important notes
at the end of this document.
4
07/12
Power line chokes
Current-compensated E core double chokes
Characteristics and ordering codes
I
R
A
0.30
0.35
0.45
0.55
0.65
0.8
1.0
1.3
1.8
L
R
mH
100
68
47
39
27
15
10
6.8
3.3
L
stray,typ
H
2000
1300
950
800
550
300
200
140
65
R
typ
m
6600
4400
2800
2200
1600
950
630
370
200
B82731T2301A020
B82731T2351A020
B82731T2451A020
B82731T2551A020
B82731T2651A020
B82731T2801A020
B82731T2102A020
B82731T2132A020
B82731T2182A020
Ordering code
B82731T
Approvals
= approval granted
Sample kit available. Ordering code: B82731X002
For more information refer to chapter “Sample kits”.
Impedance |Z| versus frequency f
measured with windings in parallel at +20 °C
typical values
10
7
IND0363-B
Current derating I
op
/I
R
versus ambient temperature T
A
Ω
|Z|
10
6
B82731
10
5
T2551A020
T2451A020
T2351A020
T2301A020
10
4
T2182A020
T2132A020
T2102A020
T2801A020
T2651A020
10
5
10
6
Hz 10
7
f
10
3
10
2 4
10
Please read
Cautions and warnings
and
Important notes
at the end of this document.
5
07/12
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