Flyback Transformers (Telecom input, 14 – 72 Vdc)

Input range: Telecom (36 – 57 Vdc) Telecom (36 – 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.

Telecom extended input (14 – 60 Vdc)
11.6 3.3 V, 2 A
5 V, 1 A
35 1 : 0.167
1 : 0.28
1000 DA2257-AL NSC LM5071
Telecom extended input (16 – 32 Vdc)
5.0 5 V, 1 A 160 1 : 0.25 250 FA2636-AL NSC LM5001
Telecom extended input (18 – 57 Vdc)
25 3.3 V, 7.5 A  50 1 : 0.12 250 FA2677-AL NSC LM5072
25 5 V, 5 A  50 1 : 0.18 250 FA2898-AL NSC LM5072
25 9 V, 2.8 A  50 1 : 0.35 250 FA2899-AL NSC LM5072
25 12 V, 2.1 A  50 1 : 0.47 250 FA2900-AL NSC LM5072
25 15 V, 1.7 A  50 1 : 0.59 250 FA2901-AL NSC LM5072
30 15 V, 2 A 10 1 : 0.667 100 A9967-AL Linear LT1725 
Telecom extended input (18 – 72 Vdc)
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
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 TSP23750
10 5 V, 2 A 150 1 : 0.20 500 C1174-AL TI TSP23750
Telecom extended input (24 – 60 Vdc)
20 3.3 V, 4 A  127 1 : 0.16 250 DA2383-AL NSC LM5071