B82802A55A325 데이터 시트보기 (PDF) - TDK Corporation
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B82802A55A325 Datasheet PDF : 7 Pages
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SMT flyback transformers
EFD series
B82802A
Technical data and measuring conditions
Input voltage Vin
Test voltage Vtest
Main inductance L
36 V DC … 60 V DC
1500 V AC
100 kHz, 100 mV, +25 °C
Inductance tolerance
±10% at +25 °C
DC current IDC
Operating frequency f
With IDC bias Ldrop approx. 20%
100 kHz
DC resistance Rmax
Solderability
Measured at +25 °C, maximum values (specified per winding)
≥99.9 Sn or Sn96.5Ag3.0Cu0.5: +(245± 5) °C, (3±0.3) s
Wetting of soldering area: ≥95% (to IEC 60068-2-58)
Operating temperature range
–40°C … +125°C
Characteristics and ordering codes
Ordering code
B82802A0012A215
B82802A0012A315
B82802A0030A220
B82802A0030A320
B82802A0055A225
B82802A0055A325
Core Schematic L Lstray,max Turns ratio
DC resistance Rmax (Ω)
Pri Sec
EFD15 Fig 1
μH μH
100 3.0
(1-10):(2-9):(5-4)
1:2.25:6.5
0.03
Vout1
0.19
Vout2 Vout3
0.45 -
EFD15 Fig 2
100 3.0 (1-10):(2-9):(3-8):(5-4) 1:2.5:0.75:7.5 0.05 0.37 0.43 0.03
EFD20 Fig 3
40 1.5
(1-10):(2-9):(5-4)
1:2.25:6.5 0.015 0.04 0.1 -
EFD20 Fig 4
40 1.8 (1-10):(2-9):(3-8):(5-4) 1:2.25:0.75:6.5 0.018 0.04 0.1 0.01
EFD25 Fig 5
22 1.5
(1-10):(2-9):(5,4-7)
1:2.5:7.5 0.003 0.04 0.03 -
EFD25 Fig 6
22 1.2 (1-10):(2-9):(3-8):(5-4) 1:2.33:0.66:6.67 0.015 0.04 0.05 0.003
Ordering code
B82802A0012A215
B82802A0012A315
B82802A0030A220
B82802A0030A320
B82802A0055A225
B82802A0055A325
Core
EFD15
EFD15
EFD20
EFD20
EFD25
EFD25
Schematic
Fig 1
Fig 2
Fig 3
Fig 4
Fig 5
Fig 6
Power
W
12
12
30
30
55
55
Vout1
V/A
12/0.5
5.0/0.8
12/1.25
5.0/2.0
12/2.3
5.0/3.7
Vout2
V/A
5.0/1.2
3.3/1.2
5.0/3.0
3.3/3.0
5.0/5.5
3.3/5.5
Vout3
V/A
-
12/0.33
-
12/0.83
-
12/1.5
EPCOS Ho PD
Please read Cautions and warnings and
Important notes at the end of this document.
Page 4 of 7
October 2012
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