The MCI Transformer Corporation 4-82 Series features standard EFD Core sizes for low profile surface mount and PC Board mount transformers that are economically manufactured on our automatic winding and assembly equipment. This series is ideal for customers who need low profile switching transformers. Adaptations of standard transformers are also available.
MAXIMUM OUTPUT POWER @ 100KHZ
| SIZE CODE | FLYBACK FORWARD | PUSH PULL BRIDGE | CORE SIZE | W | L | H | A | B | NUMBER OF PINS | WT. (GRAMS) |
|---|---|---|---|---|---|---|---|---|---|---|
| 4-82-1 | 10 | 12 | EFD15SMT | 0.81 | 0.65 | 0.32 | 0.53 | 0.15 | 8 | 6 |
| 4-82-2 | 10 | 12 | EFD15 | 0.75 | 0.65 | 0.32 | 0.54 | 0.15 | 8 | 6 |
| 4-82-3 | 50 | 60 | EFD20 | 0.95 | 0.85 | 0.38 | 0.69 | 0.2 | 8 | 15 |
| 4-82-4 | 70 | 84 | EFD25 | 1.15 | 1.05 | 0.5 | 1.08 | 0.2 | 12 | 39 |
| 4-82-5 | 110 | 132 | EFD30 | 1.35 | 1.26 | 0.5 | 1.08 | 0.2 | 12 | 39 |
By using superior grades of core material, MCI´s 4-82 series transformers are suited to operate at switching frequencies up to 1MHz. These transformers are designed to meet UL and CSA requirements and are Hipot tested at 1000VRMS standard with higher voltages available. MCI´s 4-82 Series utilizes standard materials for quick turnaround of custom variations. MCI´s “State of the art” manufacturing facilities provide automatic assembly and 1005 final testing to guarantee a high quality part. Our design engineers are knowledgeable regarding switchmode magnetics and can provide many solutions for your overall switching power application.
The above transformers can be used in four topologies, flyback, forward, pushpull, and bridge converters. For supplies in the 5-110 watt range the flyback is recommended. It has the least parts count, only one input switching devices, and no output inductor or freewheeling diode. It also exhibits excellent tracking between multiple outputs.
Information required to order a 4-82 Series Transformer:
