Toroidal Transformer By MPP Core With Base

Type : Transformer 

Fullstar P/N : FT40125-190Y  (19uH) 

The inductance can be customized . 

 Specification :

Primary inductance : 19uH ±15% 

Secondary inductance : 15.2uH @100KHz, 100mv 

Testing condition: 100KHz, 100mv

DCR for primary: 20mΩ max

DCR for secondary " 270mΩ max

Turns ratio: 1:1 

Hi-pot:  250Vdc, 1mA , 2Seconds 

The operating temperature is -40℃ to 155℃

Wire: Litz wire 

Core material : MPP 


RoHS Compliant

Flammability: UL94V-0

ASTM oxygen index: 28%

Temp 20℃, 48%RH 


Sample show 

toroidal transformer


Application domain:

Switching Mode Power Supply

UPS uninterrupted power supply

Pulse welding equipment

Power converter

Wind power generator

Various transmission devices

Other single phase or three-phase power lines and common mode filters in various power supply

Advantage of MPP material core 

Molybdenum permalloy powder core (MPP) components: 81%Ni, 2%Mo, 19, saturation magnetic induction intensity is low, about 0.75T, permeability change range, from 14 to 550, the magnetostrictive coefficient is close to zero, excellent temperature stability (permeability less than 330 materials from -60 to 80 DEG C. the magnetic conductance the relative change rate of less than 0.4%), with the lowest core loss in the magnetic core, the DC magnetic bias ability after sendust core, because of high nickel content, the price is the most expensive in the magnetic core.


Other products - switching power transformer / common mode chokes

Air coil 

PCB mounting current transformer 


QQ:  1478124633

Skype: sophie84_2005116

Wechat : 55911767 

WhatsApp: 15829062422 

TEL: 86-29-86676405 / 

      15829062422/ 18192289495



1.35 years of experience
2.Short delivery time, some parts are in stock

3.Factory-direct price
4.OEM projects
5.Samples are free and could be delivered in 4 days

6.Production capacity : 500,000 pcs/month

7.With complete and advanced automatic devices and more than 300 experienced staff
8.Complete certificates: UL insulation system, ISO 9001:2008, TS16949, RoHS


©Shaanxi Fullstar Electronics Co.,Ltd