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  • ETD Power Switchmode Transformers
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ETD Power Switchmode Transformers

(ETD Core Style)

Precision Inc has developed switchmode transformers utilizing industry standard configurations, such as materials and footprints. These "standard" switchmode transformers are designed around a sizing factor number.  To determine which core style will work in your application we offer a Product Family Calculator to assist in the selection. 

If you prefer the ETD style core, the sizing factor Calculator is located below.

Features
  • Ideal for IEC spacing applications
  • Low leakage inductance
  • Choice of low profile horizontal or upright vertical mounting.
Mechanical Characteristics

 

ETD Mechnical Drawing

 * For standard product: Please select the quantity for each item you wish to order or receive a quote and click the 'Add To Quote' button below.
* For custom product: Please click 'Custom' button below. You will be directed to a page where you can add custom product information and attach prints.


Sizing Factor Calculator

 

ETD Sizing Factor

Once the core has been selected please contact our design engineers to assist with the transformer design and manufacturability issues such as; turns ratio, dielectric, wire breakout, pin termination, IEC margins, Rohs, REACH and other construction related requirements.

Sizing factor notes that apply to the table above:

  1. Sizing constraints: Temperature rise is 40°C, the ambient temperature is 50°C and it does not include IEC Spacing.
  2. Increasing the operational frequency will reduce the sizing factor number and transformer size.
  3. Increasing the temperature rise allowed in the part will reduce sizing factor number and transformer size.
  4. Adding IEC dielectric requirements will increase the sizing factor number and transformer size.

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