Layout
Power (1)
Max Dimensions
E20A
15-25W
16,6 mm
E25A
20-45W
31,7 mm
E25B
40-70W
21,7 mm
E25C
20-45W
20,4 mm
People also ask
What type of transformer is used in SMPS?
Most SMPS topologies will use a 2-coil transformer, while others (e.g., bridge or LLC) will use a 3-coil transformer. A 3-coil transformer is often used to provide multiple output power levels from a single SMPS circuit.
Mar 2, 2020
How do I choose a core for SMPS transformer?
Selecting the suitable core size for your SMPS transformer design is another crucial aspect. The core area can be measured by multiplying the core cross-section area by the window area used for the winding. This technique is used to initially estimate the core size for an application.
How to calculate SMPS transformer formula?

Calculate Primary Turns

1
Vin(nom) – Nominal input voltage. For 220VAC it will be 220⋅√2=311VDC.
2
f – Switching frequency in Hertz.
3
Bmax – Maximum flux density in Gauss. Take Bmax in range 1300G to 2000G. ...
4
Ac – Effective cross-sectional area in cm2. This can be get from datasheets.
What is the specification of transformer?
Some basic requirements for the construction of power transformers are core, breather, valves, tap changing switch, buchholz relay, steel tank, vent pipe, coil winding and thermometer. The rated power of power transformers ranges between 3 MVA to 200 MVA. It is cooled down using oil forced air cooling.
Suitable for applications in multiple output switching power supplies. It is a product conforming to RoHS directive.
NT$42 to NT$932
Main Applications of SMPS Transformers ; Product Image. 2 Output 4W Flyback SMPS Transformer, 85 → 265V ac, 3.3 → 7 V dc, 8 → 17 V dc. RS Stock No.: 418-5470.
In stock
Features · Design for high-performance · automotive 2kW SMPS · Low-profile copper frames technology · Dedicated 48V battery systems · Threaded M4 terminals ready for ...
This type of transformer operates at high frequencies, typically 200kHz–2MHz. Common ferrite types are EFD, ETD, EP and RM. EFD Types. EFD Types are basically ...
Electrical Specification at 25°C. 1. Inductance is measured at 250kHz, 0.7Vrms, 0Adc. 2 ... Power Transformers. OFF-LINE Switch Mode. CUSTOM SMPS TRANSFORMER ...
SMPS transformer specification from resources.pcb.cadence.com
Mar 2, 2020 · An SMPS transformer is used in a switching power supply to provide galvanic isolation. The SMPS transformer in an isolated power supply provides ...
Apr 13, 2022 · Physically speaking, a transformer at its most basic is e.g. a twisted pair wrapped around a core. You power one side and the other side mirrors ...
Custom switch Mode (SMPS) transformer design and manufacturing in the US to meet your needs ... This semi custom product requires the specification of the (Max.) ...