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Magnetics Epcos (Siemens Matsushita Components), Germany TDK Ferroxcube
North West Laboratory

Engineering Center SZL and LEPCOS
— General representative of Epcos AG by ferrite in the CIS
— Official distributor and general representative for ferrites of
    TDK Electronics Europe Gmbh in the CIS
— Authorized distributor of Magnetics in Russia, CIS and Baltic countries
— Exclusive distributor of USM in Russia and CIS countries
— Official Distributor Temex Ceramics in Russia and CIS
 

MSTN cores for power transformers of SMPS

Toroidal MSTN cores are made of thin (20 µm) nanocrystalline ribbon (AMAG 200C). These products are characterized by low losses, high saturation induction, high operating temperature (up to 150 °C), high magnetic permeability. MSTN series is designed for application in power high- frequency push-pull transformers and forward converters. High permeability provides a good electromagnetic connection of windings and low leakage inductance values, that improves the quality of the transformer, increases the efficiency and reduces the electromagnetic interference of source. However, in some applications, high permeability may cause difficulties, such as DC-DC converters with open collector, where the two halves of the primary winding are connected directly to the collectors of power transistors. To avoid the risk of core's saturation developers need to ensure an exact match of volt-second area half-waves. In particular, it automatically provides energy supplying for the primary winding through a capacitor.

Configuration: Magnetic cores are available in two design versions: 1. In a hard protective container made of glass-filled polyamide. Operating temperature range is from -60 to +120 °C. The container has rounded edges and is designed for direct application to a thick wire winding. Container provides a reliable mechanical protection of nanocrystalline material and the preservation of its properties. 2.Products with a special high-temperature epoxy powder coating. Operating temperature range is from -60 to +150 °C.

Technical characteristics

Advantages of MSTN cores:
  • Low losses
  • Increased operating temperature
  • High permeability
  • Low leakage inductance
  • Small sizes
  • Low level of EMI
  • High efficiency
Application:
  • Pulse transformers of push-pull SMPS
  • Pulse transformers of forward SMPS
Серия MSTN
Type Dimensions in a container
[with a paint coating]
(without a container)
(D-d-H)
(mm)
Mean line length
Lm
(mm)
Cross-section
Аc
(mm²)
Specific losses
W/kg
mo more
Squareness
ratio,
no more
Relative
permeability,
no more
Container's material
100 kHz
0.3 T
1 kHz
80А/m
100 kHz
ΔB = 1 T
Nomin. Nomin. Max. Max. Min.
MSTN-10S-TH
[MSTNP-10S-TH]
11.3 – 5.3 – 5.6
[11.0-5.5-5.5]
(9.8-6.5-4.5)
25.5 6.1 90.0
[110]
0.35
[0.4]
20000 Plastic
[Paint coating]
MSTN-12S-TH
[MSTNP-12S-TH]
14.0 – 6.6 – 6.3
[13.0-7.0-5.5]
(12.0-8.0-4,5)
31.4 7.0
MSTN-15A-TH
[MSTNP-15A-TH]
16.7 – 10.5 – 6.3
[16.0-11.0-5.5]
(15.0-12.0-4.5)
42.4 5.26
MSTN-16A-TH
[MSTNP-16A-TH]
17.8 – 8.3 – 8.1
[17.0-9.0-7.0]
(16.0–10.0–6.0)
40.8 14.04
MSTN-18S-TH
[MSTNP-18S-TH]
19.8 –10.4 – 6.4
[19.0-11.0-5.5]
(18.0-12.0-4.5)
46.5 10.5
MSTN-20A-TH
[MSTNP-20A-TH]
22.5-10.4-10.1
[21.0-11.5-9.0]
(20.0-12.5-8.0)
51.0 23.4
MSTN-25A-TH
[MSTNP-25A-TH]
27.7-17.3-12.9
[26.0-19.0-11.0]
(25.0-20.0-10.0)
70.7 19.5
MSTN-25S-TH
[MSTNP-25S-TH]
28.4-13.8-12.2
[26.0-17.0-11.0]
(25.0-16.0-10.0)
64.4 35.1
MSTN-30S-TH
[MSTNP-30S-TH]
34.2-17.7-12.3
[33.0-19.0-11.0]
(32.0-20.0-10.0)
78.5 39.0
MSTN-40A-TH
[MSTNP-40A-TH]
42.7-29.0-18.0
[41.0-31.0-16.0]
(40.0-32.0-15.0)
113.0 46.8
MSTN-40S-TH
[MSTNP-40S-TH]
40.7-23.4-15.3
[39.0-25.0-13.0]
(38.0-26.0-12.0)
100.5 56.16
MSTN-45S-TH
[MSTNP-45S-TH]
48.1-21.9-23.4
[46.0-26.0-21.0]
(45.0-25.0-20.0)
100.9 156.0
MSTN-50S-TH
[MSTNP-50S-TH]
53.8-36.2-23.9
[51.0-39.0-21.0]
(50.0-40.0-20.0)
141.3 78.0
MSTN-60S-TH
[MSTNP-60S-TH]
64.0-41.0-24.5
[61.0-44.0-21.0]
(60.0-45.0-20.0)
164.9 117.0
MSTN-60A-TH
[MSTNP-60A-TH]
64.0-36.0-34.0
[61.0-39.0-31.0]
(60.0-40.0-30.0)
157.0 228.0
MSTN-63A-TH
[MSTNP-63A-TH]
67.3-46.5-28.6
[64.0-49.0-26.0]
(63.0-50.0-25.0)
177.4 126.8
MSTN-80A-TH
[MSTNP-80A-TH]
83.4-59.6-28.6
[81.0-62.0-26.0]
(80.0-63.0-25.0)
224.5 156.7
MSTN-100S-TH
[MSTNP-100S-TH]
104.2-75.8-24.7
[101.0-79.0-20.0]
(100.0-80.0-20.0)
282.6 156.0

Designation in technical documentation

Example of MSTN series ordering code:
MSTN(P)-10S-TH, where:
MS – MSTATOR;
T – application (transformers);
N –material's type (nanocrystalline);
10 – outer diameter, mm;
S – cross-section reference code;
TH – the kind of thermal treatment (in a strong transverse magnetic field)

Stock availability

Склад

You can check MSTN cores stock availability, actual prices and send the order in our online-shop.


 
NORTH-WESTERN LABORATORY: NEWS
 
09.10 19 

LEPCOS invites you to attend the Stand C23 at ChipEXPO 2019 exhibition, which will be held from 16 to 18 October 2019 in Moscow in the Expocentre, in the pavilion "Forum".

chip_expo



26.06 19 
According to the results of 2018 Lepcos has received "best ferrites seller 2018" seal of excellence from TDK company.



18.04 19 
Dear colleagues! We would like to draw your attention to the fact that, since December 2018, the package content of electrolytic capacitors has been changed.



 
 


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