Document 651-1
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.
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 – 72Vdc)
B0226-EL
2.0
12 V, 1.67 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
5 V, 2 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 : 0.12
1 : 0.20
1 : 0.07
1 : 0.08
1 : 0.11
1 : 0.166
1 : 0.15
1 : 0.25
1 : 0.25
1 : 0.25
1 : 0.35
1 : 0.50
—
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
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
PoE
1.02
2.01
NSC LM5070
PoE
POE30P-50L
C1591-AL
1.02
2.01
4
1.02
2.01
4
NSC LM5070
PoE
POE30P-12L
C1592-AL
1.04
2.01
4
1.04
2.01
0.70
4
NSC LM5070
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
0.017
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
PoE
0.575
0.15
6
PoE
55
9
PoE
177
80
0.66
6
PoE
0.388
0.18
6
PoE
65
9
PoE
184
85
0.515
0.53
6
PoE
6
PoE
60
0.165
0.66
9
PoE
193
90
6
PoE
0.529
0.15
6
PoE
55
9
PoE
204
95
0.545
0.484
0.012
0.036
0.036
0.06
6
PoE
6
PoE
100
155
155
155
155
155
155
221
13
7
NSC LM5000
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
0.010
0.026
0.005
0.005
0.007
0.310
0.009
0.348
0.039
7
NSC LM5070
PoE
POE70P-50L
C1588-AL
250
10
7
0.06
7
NSC LM5070
PoE
POE70P-12L
C1589-AL
250
10
0.343
0.343
—
7
7
NSC LM5070
Linear LTC4267
D1766-AL
10
200
14
C1048-AL
FA2519-AL
10
11
15 V, 0.2 A
250
250
250
250
250
250
250
250
250
250
250
250
1 : 0.47
1 : 0.60
1 : 0.36
1 : 0.33
1 : 0.36
1 : 0.50
1 : 0.35
1 : 0.50
1 : 0.594
1 : 0.50
1 : 0.35
1 : 0.50
94
55
0.210
0.026
0.195
0.095
0.138
0.255
0.130
0.222
0.222
0.185
0.095
0.199
0.453
0.388
0.195
0.150
0.180
0.024
0.165
0.039
0.405
D
D
D
D
D
D
D
D
D
D
D
D
9
14
9
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
SM
Linear LT1725
3.3 V, 3.3 A
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
5.0 V, 2.6 A
12 V, 1.1 A
12 V, 1.08 A
10 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
10 V, 20 mA
12 V, 20 mA
12 V, 20 mA
NSC LM5071, LM5072
POE13F-18L 13
POE13F-25L 13
POE13F-33L 13
POE13P-33L 13
POE13F-50L 13
POE13P-50L 13
45
PoE
35
9
PoE
40
9
PoE
127
40
8
PoE
9
PoE
127
127
102
35
8
PoE
DA2362-AL
GA3372-AL
13
13
8
Freescale MC34670
NSC LM5015
PoE
0.0175 0.270
0.017
0.308
8
POE13F-12L 13
POE13P-12L 13
0.150
0.065
9
127
8
PoE
Specification subject to change without notice.
Please check our website for latest information.
Document 651-1 Revised 12/29/08
© Coilcraft, Inc. 2008