Power levels of between 1 and 50 Watts can be transformed with the WE-FLEX series transformers. They can be used at switching frequencies of up to 1 MHz. WE-FLEX Transformers. 3x2 windings Isolation voltage 500Vdc Low stray inductance Operating temperature: -40°C to +125°C Applications include: flyback, forward, push-pull, step-down, step-up, SEPIC converters