Document651-1
Flyback Transformers
For complete specifications see www.coilcraft.com
Body size 3
Body size 4
Body size 5
Body size 14
Body size 8
This list of dc-dc and off-line switching converter transformers are stocked for immediate delivery and may be sampled at no cost. They
are organized by input and sorted by output. These transformers also operate well in applications with power levels other than those
shown and at a wide range of frequencies. The nominal frequency and circuit reference are only provided as a guide.
A selection of flyback transfomers designed as capacitor chargers and dc to ac inverters are shown at the top of page 4.
If no transformer shown here meets your design criteria, consult Document 627 “Coilcraft Structured Design Guide for Switching
Transformers” for a step-by-step guide to transformer design, or contact Coilcraft for assistance.
Nominal
freq.
(kHz)
L at
0 A
Turns ratio
pri : sec pri : aux / bias (µH)
DCR (Ohms)
sec aux / bias Schem size Mtg
Part
number
Power
(W)
Body
Output
Aux / bias
pri
Designed for
Telecom input (36 – 72 Vdc)
B0226-EL
2.0
12 V, 167 mA
12 V, 3 mA
3.3 V, 0.91 A
3.3 V, 0.91 A
5.0 V, 0.6 A
5.0 V, 0.6 A
12 V, 0.25 A
12 V, 0.25 A
1.8 V, 3.3 A
1.8 V, 3.3 A
1.8 V, 3.3 A
2.5 V, 2.4 A
2.5 V, 2.4 A
2.5 V, 2.4 A
3.3 V, 1.8 A
3.3 V, 1.8 A
3.3 V, 1.8 A
5.0 V, 1.2 A
5.0 V, 1.2 A
5.0 V, 1.2 A
12 V, 0.5 A
12.0 V, 0.5 A
12.0 V, 0.5 A
3.3 V, 3 A
3.3 V, 2.12 A
3.3 V, 2.12 A
5.0 V, 1.4 A
5.0 V, 1.4 A
12 V, 0.6 A
12 V, 0.6 A
3.3 V, .5 A
2.5 V, 1.5 A
1.8 V, 2.5 A
3.3 V, 3 A
—
1000
1 : 0.36
1 : 0.36
1 : 0.19
1 : 0.19
1 : 0.28
1 : 0.28
1 : 0.70
1 : 0.70
1 : 0.07
1 : 0.063
1 : 0.063
1 : 0.08
1 : 0.083
1 : 0.083
1 : 0.11
1 : 0.100
1 : 0.100
1 : 0.15
1 : 0.143
1 : 0.143
1 : 0.35
1 : 0.333
1 : 0.333
1 : 0.333
1 : 0.19
1 : 0.19
1 : 0.262
1 : 0.262
1 : 0.667
1 : 0.667
1 : 0.104
1 : 0.042
1 : 0.042
1 : 0.33
1 : 0.20
1 : 0.40
1 : 0.12
1 : 1
—
120
0.364
0.248
0.248
2.01
—
B
2
SM On Semi NCP1030
POE30P-33L
C1590-AL
3.0
3.0
3.0
3.0
3.0
3.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.6
7.0
7.0
7.0
7.0
7.0
7.0
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
24 V
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
100
250
10
1 : 0.70
1 : 0.70
1 : 0.70
1 : 0.70
1 : 0.70
1 : 0.70
1 : 0.36
1 : 0.344
1 : 0.344
1 : 0.33
1 : 0.333
1 : 0.333
1 : 0.36
1 : 0.333
1 : 0.333
1 : 0.35
1 : 0.343
1 : 0.357
1 : 0.35
1 : 0.333
1 : 0.333
1 : 1
310
310
310
310
310
310
75
1.02
0.066
0.066
0.118
0.118
0.70
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
C
4
4
SM PoE
1.02
2.01
SM TI LM5070
SM PoE
POE30P-50L
C1591-AL
1.02
2.01
4
1.02
2.01
4
SM TI LM5070
SM PoE
POE30P-12L
C1592-AL
1.04
2.01
4
1.04
2.01
0.70
4
SM TI LM5070
SM PoE
POE60F-18L
POE60C-18L
POE60D-18L
POE60F-25L
POE60C-25L
POE60D-25L
POE60F-33L
POE60C-33L
POE60D-33L
POE60F-50L
POE60C-50L
POE60D-50L
POE60F-12L
POE60C-12L
POE60D-12L
A0009-AL
0.195
0.303
0.311
0.095
0.353
0.219
0.138
0.286
0.285
0.130
0.344
0.271
0.095
0.293
0.265
0.15
0.005
0.017
0.018
0.005
0.027
0.018
0.007
0.026
0.026
0.009
0.043
0.033
0.017
0.083
0.074
0.15
0.195
0.57
9
167
75
6
SM PoE
0.575
0.15
6
SM PoE
55
9
SM PoE
177
80
0.66
6
SM PoE
0.388
0.18
6
SM PoE
65
9
SM PoE
184
85
0.515
0.53
6
SM PoE
6
SM PoE
60
0.165
0.66
9
SM PoE
193
90
6
SM PoE
0.529
0.15
6
SM PoE
55
9
SM PoE
204
95
0.545
0.484
0.012
0.036
0.036
0.06
6
SM PoE
6
SM PoE
100
155
155
155
155
155
155
221
13
7
SM TI LM5000
SM PoE
POE70P-33L
C1587-AL
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
—
1 : 0.667
1 : 0.667
1 : 0.667
1 : 0.667
1 : 0.667
1 : 0.667
—
0.414
0.414
0.414
0.414
0.414
0.414
0.420
0.822
0.822
0.822
0.822
0.822
0.822
0.065
0.015
0.030
0.062
0.026
0.085
0.010
0.156
0.005
0.005
0.007
0.310
0.009
0.348
0.039
7
SM TI LM5070
SM PoE
POE70P-50L
C1588-AL
250
10
7
0.06
7
SM TI LM5070
SM PoE
POE70P-12L
C1589-AL
250
10
0.343
0.343
—
7
7
SM TI LM5070
SM Linear LTC4267
D1766-AL
10
200
14
FA2671-AL
FA2519-AL
FA2672-AL
C1048-AL
FA2732-AL
10
10
10
10
10
—
400
250
400
250
400
250
250
250
250
250
250
250
—
40
55
0.098
0.026
0.098
0.210
0.098
0.195
0.095
0.138
0.255
0.130
0.222
0.222
—
A
D
A
D
A
D
D
D
D
D
D
D
7
14
7
SM Silicon Labs Si3401, Si3402
SM TI LM5071, LM5072
SM Silicon Labs Si3401, Si3402
SM Linear LT1725
SM Silicon Labs Si3401, Si3402
SM PoE
3.3 V, 3.3 A
5 V, 2 A
5 V, 2 A
10 V, 20 mA
—
1 : 0.60
—
0.388
—
40
15 V, 0.2 A
—
1 : 0.47
—
94
0.453
—
9
12 V, 0.83A
1.8 V, 7.2 A
2.5 V, 5.2 A
3.3 V, 3.9 A
3.3 V, 4.0 A
5.0 V, 2.6 A
5.0 V, 2.6 A
5.0 V, 2.6 A
40
7
POE13F-18L 13
POE13F-25L 13
POE13F-33L 13
POE13P-33L 13
POE13F-50L 13
POE13P-50L 13
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
12 V, 20 mA
1 : 0.07
1 : 0.08
1 : 0.11
1 : 0.166
1 : 0.15
1 : 0.25
1 : 0.25
1 : 0.36
1 : 0.33
1 : 0.36
1 : 0.50
1 : 0.35
1 : 0.50
1 : 0.594
45
0.195
0.150
0.180
0.024
0.165
0.039
0.405
9
35
9
SM PoE
40
9
SM PoE
127
40
8
SM PoE
9
SM PoE
127
127
8
SM PoE
DA2362-AL
13
8
SM Freescale MC34670
Document 651-1 Revised 01/29/14
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© Coilcraft Inc. 2014
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Singapore + 65-6484 8412 sales@coilcraft.com.sg