R core transformer

R core transformer is a new kind of dry type transformer. the magnetic core of R core transformer is made from continuous silicon steel strip, and the cross section is round, like O core transformer. R core transforer has the advantages of low noise, low flux leakage, low no-load current, low loss, and high efficiency. R core transforer is a kind of copper saving transformer, needs less copper for each turn. It has greater explosive power than toroidal transformer. The bobins of R core transformer are made of PBT plastic, which has a strong dielectric strength and fire resistance. R core transformer is widely used in industrial control, home appliances, hi-fi audio equipment, signal equipment, office device, communication apparatus, test instrument and medical instrument.

R core transformer

High dielectric strength

The windings are evenly distributed in 2 different bobbins, it is much more convenient to make high voltage transformer by seperate one winding into several layers.

Low noise

R core transformer has high isolation degree. it can improve the signal-to-noise ratio, isolate the harmonic interference, reduce the noise, make he background cleaner. R core transforer can fully improve the quality of sound.

R core

0.23mm, 0.27mm, 0.30mm Hi-B oriented silicon steel strip will be adopted to make sure the best magnetic performance. the magnetic core is made by a continuous silicon steel strip, no break point. The flux path is continuous, no gap and less flux leakage, which guaranteed the high magnetic performance.

R core
ofc copper wire

Copper wire

OFC(Oxygen Free Copper) copper wire applied in our R core transformers, OFC has no hydrogen embrittlement, and has a high conductivity. It is commonly used in audio equipment, vacuum electronic components, wire and so on.


From picking up a core, calculating an appropriate copper wire to delivery test, every single R core transformer should undergo very strict processing flow. Only strict processing technics can guarantee a high quality R core transformer. And only transformers from regular manufacturers can guarantee strict processing technics.

R core transformer

R Core Transformer Series

Power A×W×X(mm) E×F×G(mm) Weight(kg)
5VA 58×47×26 45×33×4 0.2
8VA 70×61×33 53×44×4 0.3
10VA 75×61×37 68×48×4 0.4
20VA 82×70×39 56×46×4 0.5
25VA 83×72×42 70×55×4 0.6
30VA 97×77×42 70×60×5 0.7
40VA 99×80×44 70×60×5 0.9
50VA 102×90×48 75×65×5 1.0
80VA 125×90×52 90×70×5 1.4
100VA 126×103×55 100×80×5 1.7
160VA 140×115×63 100×85×5 2.6
260VA 160×121×66 130×95×5 3.1
320VA 163×128×70 135×95×5 3.8
600VA 190×145×85 142×100×8 6.5
1000VA 227×172×99 180×140×8 10.5
1500VA 238×180×102 175×145×8 -
2000VA 240×200×105 185×160×8 -
R core transformer dimension

Custom service

We supply custom made R core transformers to satisfy special requests and needs. Please get in touch with us through the contact information on our website. We can design and manufacture transformers suitable for you.