Expert With Customer Switch Mode Power Transformers
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Custom Switch Mode Power Transformers
For Switching Power Supplies
Utilizes latest core materials and shape factor to provide smallest possible volume and minimun PC board footprint for effective manufacturing cost reduction. these transformers are available in standard size/power ratings from 25 to 880 watts output for use ofver a wide frequency range. Standard configurations allow short turn-around time on custom-design samples. Other packaging and styles are available, such as horizontally mounted units. for application assistance, contact our Engineering Department.
- Standardized components speeds delivery
- VDE, IECC, UL, CSA compatable
- Frequency reange 20 kHz – 300 kHz and higher
- Core material for newest generatiohn of higher frequency SMPS

Transformer Output Power vs. Frequency and Temperature Rise
Size Series | Power (W) 50 kHz | Power (W) 100 kHz | Max Dimensions (inches) | WT. Oz. | ||||||
---|---|---|---|---|---|---|---|---|---|---|
20°C | 30°C | 40°C | 20°C | 30°C | 40°C | L | W | H | ||
MEC2016 | 25 | 35 | 40 | 40 | 55 | 63 | .92 | .92 | .83 | .8 |
MEC2020 | 35 | 45 | 55 | 55 | 70 | 80 | .92 | .92 | 1.0 | .9 |
MEC2620 | 60 | 80 | 95 | 90 | 115 | 135 | 1.15 | 1.17 | 1.0 | 1.5 |
MEC2625 | 70 | 90 | 110 | 105 | 130 | 160 | 1.15 | 1.17 | 1.17 | 1.6 |
MEC3220 | 80 | 110 | 130 | 120 | 155 | 190 | 1.36 | 1.34 | 1.0 | 2.2 |
MEC3230 | 115 | 150 | 165 | 155 | 210 | 260 | 1.36 | 1.34 | 1.4 | 3.2 |
MEC3535 | 170 | 220 | 265 | 230 | 315 | 355 | 1.48 | 1.55 | 1.6 | 4.4 |
MEC4040 | 225 | 325 | 385 | 350 | 460 | 525 | 1.67 | 1.67 | 1.76 | 6.9 |
MEC5050 | 310 | 445 | 525 | 500 | 740 | 860 | 2.10 | 2.10 | 2.10 | 12.9 |
Custom Switch Mode Power Transformers

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You’ve learned this stuff in school and throughout your career. But what is that formula? Where is that old textbook? You’re under a deadline – you’re near panic!
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You finish your design and submit it in plenty of time – all because you didn’t have to dig through old files and textbooks to find the technical information you were looking for.
Technical Information
- 60Hz Size Table (Horizontal Mount)
- 60Hz Size Table (Vertical Mount)
- Method of Approximating Secondary AC Current Requirements
- Conversion Charts
- Mil-T-27 Type Designation Interpretation
- Standard Mil-T-27 Cases Dimensions (inches)
- Custom Switch Mode Power Transformers
- Wire Table
We’re Here For You
Need UL, CSA, or VDE certification? No problem! At Mitchell Electronics, we can build your transformer to the specifications that make certification possible.
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