Flyback Transformers (Telecom input, 36 – 57 Vdc)

Input range: Telecom (36 – 72 Vdc) Telecom extended (14 – 72 Vdc) | 3.3 – 36 Vdc | 400 Vdc | AC line

These standard parts are available with opional tin-lead or tin-silver-copper terminations, which can improve the solder fillet and ensure an exceptionally reliable solder joint, and may also be available with an extended temperature range.

If no transformer meets your design criteria, review our application note Using Standard Transformers in Multiple Applications to determine if one of our other standard product offerings will work in your specific application.

For more information about transformer design, download the Coilcraft Structured Design Guide for Switching Transformers for a step-by-step guide to transformer design or contact Coilcraft for assistance.

2.0 12 V, 167 mA
12 V, 3 mA
120 1 : 0.36
1 : 0.36
1000 B0226-EL On Semi NCP1030 
2.2 3.3 V, 0.2 A
2.5 V, 0.6 A
255 1 : 0.10
1 : 0.075
275 C1154-BL Maxim MAX5941A
3.0 3.3 V, 0.91 A  310 1 : 0.19 250 POE30P-33L PoE
3.0 3.3 V, 0.91 A  310 1 : 0.19 250 C1590-AL NSC LM5070
3.0 5 V,  0.6 A  310 1 : 0.28 250 POE30P-50L PoE
3.0 5 V,  0.6 A  310 1 : 0.28 250 C1591-AL NSC LM5070
3.0 12 V, 0.25 A  310 1 : 0.70 250 POE30P-12L PoE
3.0 12 V, 0.25 A  310 1 : 0.70 250 C1592-AL NSC LM5070
5.0 3.3 V, 1.5 A 50 1 : 0.166 1000 C1453-AL Texas Instruments PMP717 
6.0 1.8 V, 3.3 A 75 1 : 0.07 250 POE60F-18L PoE
6.0 1.8 V, 3.3 A 75 1 : 0.063 250 POE60D-18L PoE
6.0 1.8 V, 3.3 A 167 1 : 0.063 250 POE60C-18L PoE
6.0 2.5 V, 2.4 A 55 1 : 0.08 250 POE60F-25L PoE
6.0 2.5 V, 2.4 A  80 1 : 0.083 250 POE60D-25L PoE
6.0 2.5 V, 2.4 A  177 1 : 0.083 250 POE60C-25L PoE
6.0 3.3 V, 1.8 A 65 1 : 0.11 250 POE60F-33L PoE
6.0 3.3 V, 1.8 A  85 1 : 0.10 250 POE60D-33L PoE
6.0 3.3 V, 1.8 A  184 1 : 0.10 250 POE60C-33L PoE
6.0 5 V,  1.2 A 60 1 : 0.15 250 POE60F-50L PoE
6.0 5 V,  1.2 A  90 1 : 0.143 250 POE60D-50L PoE
6.0 5 V,  1.2 A  193 1 : 0.143 250 POE60C-50L PoE
6.0 12 V, 0.5 A 55 1 : 0.35 250 POE60F-12L PoE
6.0 12 V, 0.5 A  95 1 : 0.333 250 POE60D-12L PoE
6.0 12 V, 0.5 A  204 1 : 0.333 250 POE60C-12L PoE
6.6 3.3 V, 3 A 100 1 : 0.33 100 A0009-AL NSC LM5000
6.6 3.3 V, 2 A  120 1 : 0.1 400 DA2062-AL Power Integrations DPA423G
6.6 3.3 V, 2 A
5 V, 1 A
35 1 : 0.167
1 : 0.277
1000 DA2257-AL NSC LM5071
7.0 3.3 V, 2.12 A  155 1 : 0.19 250 POE70P-33L PoE
7.0 3.3 V, 2.12 A  155 1 : 0.19 10 C1587-AL NSC LM5070
7.0 5 V,  1.4 A  155 1 : 0.262 250 POE70P-50L PoE
7.0 5 V,  1.4 A  155 1 : 0.262 10 C1588-AL NSC LM5070
7.0 12 V, 0.6 A  155 1 : 0.667 250 POE70P-12L PoE
7.0 12 V, 0.6 A  155 1 : 0.667 10 C1589-AL NSC LM5070
8.3 3.3 V, 2.5 A 133 1 : 0.13 275 C1099-AL Maxim MAX5941A 
9.9 3.3 V, 3 A  166.5 1 : 0.15 500 C1173-AL TI TPS23750
10 3.3 V, 3 A 40 1 : 0.333 350 FA2671-AL Silicon Labs Si3401, Si3402
10 3.3 V, 3 A 166.5 1 : 0.154 125 HA3801-AL TI TPS23753
10 3.3 V, .5 A
2.5 V, 1.5 A
1.8 V, 2.5 A
221 1 : 0.104
1 : 0.042
1 : 0.042
200 D1766-AL Linear LTC4267
10 5 V, 2 A 40 1 : 0.25 350 FA2672-AL Silicon Labs Si3401, Si3402
10 5 V, 2 A 150 1 : 0.20 125 HA3802-AL TI TPS23753
10 5 V, 2 A 94 1 : 0.12 250 C1048-AL Linear LT1725
10 5 V, 2 A 150 1 : 0.20 500 C1174-AL TI TPS23750
10 12 V, 0.83 A 40 1 : 1 350 FA2732-AL Silicon Labs Si3401, Si3402
10 12 V, 0.83 A 166.5 1 : 0.50 125 HA3803-AL TI TPS23753
11 3.3 V, 3.3 A 55 1 : 0.20 250 FA2519-AL NSC LM5071, LM5072
12.5 5 V, 2.5 A 27 1 : 0.267 250 HA3905-CL Microsemi UC3844
13 1.8 V, 7.2 A 45 1 : 0.07 250 POE13F-18L PoE
13 2.5 V, 5.2 A 35 1 : 0.08 250 POE13F-25L PoE
13 3.3 V, 3.9 A 40 1 : 0.11 250 POE13F-33L PoE
13 3.3 V, 4.0 A  127 1 : 0.166 250 POE13P-33L PoE
13 3.3 V, 4.0 A  127 1 : 0.166 250 C1495-AL NSC LM5070
13 5 V,  2.6 A 40 1 : 0.15 250 POE13F-50L PoE
13 5 V,  2.6 A 127 1 : 0.25 250 C1585-AL NSC LM5070
13 5 V,  2.6 A  127 1 : 0.25 250 POE13P-50L PoE
13 5 V, 2.6 A 127 1 : 0.25 250 DA2362-AL Freescale MC34670
13 12 V, 1.0 A 117.5 1 : 0.457 275 GA3271-AL Maxim MAX5941B
13 12 V, 1.08 A  127 1 : 0.50 250 POE13P-12L PoE
13 12 V, 1.08 A  127 1 : 0.50 250 C1586-AL NSC LM5070
13 19.5 V, 0.67 A 37 1 : 0.57 250 POE13F-19L PoE
13 12 V, 1.1 A 35 1 : 0.35 250 POE13F-12L PoE
13 19.5 V, 0.67 A  127 1 : 0.567 250 POE13P-19L PoE
13 24 V, 0.54 A 37 1 : 0.67 250 POE13F-24L PoE
13 24 V, 0.54 A  127 1 : 0.667 250 POE13P-24L PoE
15 3.3 V, 4.5 A 110 1 : 0.19 10 C1023-AL NSC LM5070
15 3.3 V, 4.5 A 40 1 : 0.31 350 FA2924-AL Silicon Labs SSi3401, Si3402
15 3.3 V, 4.5 A 110 1 : 0.23 10 B0695-AL NSC LM5020
15 5 V, 3 A 40 1 : 0.40 350 FA2805-CL Silicon Labs Si3401, Si3402
15 12 V, 1.25 A 40 1 : 1 350 FA2925-AL Silicon Labs Si3401, Si3402
20 3.3 V, 6 A 77.8 1 : 0.147 250 FA2706-BL STMicro PM8800
20 5 V, 4 A 77.8 1 : 0.206 250 FA2707-BL STMicro PM8800
30 3.3 V, 9 A 42 1 : 0.56 250 POE300F-33L PoE Plus
30 5 V, 6 A 42 1 : 0.67 250 POE300F-50L PoE Plus
30 12 V, 2.5 A 42 1 : 0.09 250 POE300F-12L PoE Plus
30 19.5 V, 1.5 A 42 1 : 0.14 250 POE300F-19L PoE Plus
30 24 V, 1.25 A 42 1 : 0.33 250 POE300F-24L PoE Plus